Merge pull request 'Bump the version to 0.1.5-beta' (#53) from release-0.1.5-beta into master

Reviewed-on: #53

.gitea/workflows/check.yml

@@ -19,15 +19,20 @@ jobs:
       # The JDK comes from the runner's tool cache. `cache: gradle` stores Gradle's
       # dependencies, Loom's Minecraft cache and the build cache in the runner's
       # actions cache.
-      - name: Set up Java 21
+      # 1.21.x builds with Java 21 and 26.x with Java 25. The last version listed is the default
+      # (Gradle runs on it), and the Gradle commands below point toolchain detection at both.
+      - name: Set up Java 25 and 21
         uses: actions/setup-java@v5
         with:
           distribution: temurin
-          java-version: 21
+          java-version: |
+            25
+            21
           cache: gradle
 
       - name: Compile all versions
         run: |
           chmod +x gradlew
           # --continue reports every version that fails, not just the first.
-          ./gradlew compileJava --no-daemon --stacktrace --continue
+          ./gradlew compileJava --no-daemon --stacktrace --continue \
+            -Porg.gradle.java.installations.fromEnv=JAVA_HOME_21_X64,JAVA_HOME_25_X64

.gitea/workflows/release.yml

@@ -47,11 +47,15 @@ jobs:
       # The JDK comes from the runner's tool cache. `cache: gradle` stores Gradle's
       # dependencies, Loom's Minecraft cache and the build cache in the runner's
       # actions cache.
-      - name: Set up Java 21
+      # 1.21.x builds with Java 21 and 26.x with Java 25. The last version listed is the default
+      # (Gradle runs on it), and the Gradle commands below point toolchain detection at both.
+      - name: Set up Java 25 and 21
         uses: actions/setup-java@v5
         with:
           distribution: temurin
-          java-version: 21
+          java-version: |
+            25
+            21
           cache: gradle
 
       - name: Build all versions
@@ -59,7 +63,8 @@ jobs:
           chmod +x gradlew
           # buildAll remaps every Minecraft version (two at a time, to stay within the
           # Gradle heap) into build/allJars.
-          ./gradlew buildAll --no-daemon --stacktrace
+          ./gradlew buildAll --no-daemon --stacktrace \
+            -Porg.gradle.java.installations.fromEnv=JAVA_HOME_21_X64,JAVA_HOME_25_X64
 
       - name: Upload jars to the release
         env:

README.MD

@@ -18,7 +18,7 @@
 Saturn Client is a free, open-source Minecraft client designed to enhance the gameplay experience while staying lightweight and customizable.
 Our goal is to build a clean, optimized client that the community can contribute to and improve together.
 
-Saturn runs on Fabric and supports **Minecraft 1.21.4 to 1.21.11**, with one build per version. If something doesn't work on your version, please open an issue.
+Saturn runs on Fabric and supports **Minecraft 1.21.4 to 1.21.11 and 26.1 to 26.3**, with one build per version (the 26.1 build also runs on 26.1.1 and 26.1.2). If something doesn't work on your version, please open an issue.
 
 ## Features
 
@@ -51,7 +51,7 @@ cd saturnclient
 ./gradlew :1.21.11:runClient          # launch a development client
 ```
 
-Building needs Java 21.
+Building needs Java 21. The 26.x versions compile with Java 25, which Gradle downloads when it isn't installed.
 
 ## Contributing
 

VERSION_GUIDE.md

@@ -4,13 +4,27 @@ How Saturn Client supports several Minecraft versions, and how to change or add
 
 ## Layout
 
-Every supported Minecraft version (1.21.4 to 1.21.11) builds from one copy of the version-specific code with [Stonecutter](https://stonecutter.kikugie.dev/):
+Every supported Minecraft version (1.21.4 to 1.21.11, and 26.1 to 26.3) builds from one copy of the version-specific code with [Stonecutter](https://stonecutter.kikugie.dev/):
 
 - `common/`: all version-independent code (mods, UI, cosmetics, the server client). It has no Minecraft dependency and reaches the game only through the interfaces in `org.saturnclient.common`.
 - `src/`: the version-specific code (providers, refs, mixins and the three mixin configs), one copy for every version. Where Minecraft's API differs between versions, the code goes behind version comments (see below).
-- `versions/<mc>/`: each version's `gradle.properties` (Minecraft, Yarn, Fabric Loader and Fabric API versions), plus its `build/` and `run/` folders. Each version is the Gradle project `:<mc>`.
+- `versions/<mc>/`: each version's `gradle.properties` (Minecraft, Fabric Loader and Fabric API versions), plus its `build/` and `run/` folders. Each version is the Gradle project `:<mc>`.
 
-`settings.gradle.kts` lists the versions in `stonecutterVersions`. The root `build.gradle.kts` builds each version, and `stonecutter.gradle.kts` configures the root project (shared repositories, the `common` wiring and `buildAll`). Loom's version is `loom_version` in the root `gradle.properties`.
+`settings.gradle.kts` lists the versions in `stonecutterVersions`. The root `build.gradle.kts` builds each version, and `stonecutter.gradle.kts` configures the root project (shared repositories, the `common` wiring and `buildAll`). Loom's version is `loomx.loom_version` in the root `gradle.properties`.
+
+Minecraft is obfuscated up to 1.21.11 and ships with Mojang's names from 26.1. The `loom-back-compat` plugin (`loomx`) applies the matching Loom for each version: the remapping one for 1.21.x, whose jar is `remapJar`'s output, and the plain one for 26.x, whose jar is `jar`'s. 26.x also compiles with Java 25 (21 before), set per version in `build.gradle.kts`; Gradle downloads a missing JDK through the foojay resolver, and CI installs both. An optional `minecraft_compat` in a version's `gradle.properties` widens the Minecraft versions its jar loads on, as 26.1's does for its hotfixes.
+
+## Mappings
+
+Every version is built with Mojang's official names (`loom.officialMojangMappings()`), the names Minecraft itself ships from 26.1 on. Yarn isn't used any more: 1.21.11 has the last Yarn release.
+
+Mojang renames things between versions. `src/` uses the active version's (1.21.11's) names, and `stonecutter.gradle.kts` lists replacements that swap in each version's name when Stonecutter processes it: for example `Identifier`, which was `ResourceLocation` before 1.21.11, `AvatarRenderState`, which was `PlayerRenderState` before 1.21.9, and `GuiGraphics`, which is `GuiGraphicsExtractor` from 26.1. Add a replacement there when a rename touches many lines, and only for a name that appears nowhere else in `src/`: replacements work both ways, so the new name is also turned back into the old one for older versions (a `mulPose`/`rotate` replacement would rename `MatrixStackRef.rotate` too). From 26.2 the open screen and overlay live on `Gui` rather than `Minecraft`, so code goes through `impl.ui.Screens` for them.
+
+From 26.3 Minecraft uses SDL instead of GLFW, with SDL's numbers for keys (scancodes), modifiers and mouse buttons. Saturn keeps GLFW's numbers, which `common` uses and the config's keybinds store, and `impl.provider.Keys` converts at the boundary: key events and mouse buttons coming in, and key codes going to the game. Use `InputConstants`' key constants rather than GLFW's in version-specific code.
+
+26.3 also compiles every shader through SPIR-V, so shader inputs and outputs need an explicit `layout(location = …)`. Saturn's `glass.fsh` is shared by every version from 1.21.6 and switches its layout with the defines `GlassRenderer` sets, as it already did for `HAS_LINE_WIDTH`. A class that only moved package needs just a version comment on its import, and a renamed method a version comment where it's called.
+
+Released 1.21.x jars run on intermediary names (`method_1234`), not Mojang's, and Loom renames everything that refers to Minecraft when it builds them. So a mixin can't implement one of `common`'s Ref interfaces by relying on a vanilla method that happens to have the same name: the vanilla method is renamed in the jar, and the interface method is left without an implementation (`AbstractMethodError`). Shadow the vanilla method and implement the Ref method explicitly, as `WindowMixin` does. For the same reason, Ref methods mustn't share a name and parameters with a method of the class they're mixed into, or the mixin replaces the vanilla method in development.
 
 ## Version-specific code with Stonecutter
 
@@ -18,19 +32,19 @@ The code in `src/` is always plain Java for the **active** version (1.21.11, set
 
 ```java
 //? if >=1.21.9 {
-public void render(MatrixStack matrices, OrderedRenderCommandQueue queue, int light, PlayerEntityRenderState state, float limbAngle, float limbDistance) {
+public void submit(PoseStack matrices, SubmitNodeCollector output, int light, AvatarRenderState state, float limbAngle, float limbDistance) {
 //?} else
-//public void render(MatrixStack matrices, VertexConsumerProvider consumers, int light, PlayerEntityRenderState state, float limbAngle, float limbDistance) {
+//public void render(PoseStack matrices, MultiBufferSource output, int light, AvatarRenderState state, float limbAngle, float limbDistance) {
 ```
 
 A condition without braces covers the next line only. For several lines, use braces and wrap the inactive block in `/* … */`:
 
 ```java
 //? if >=1.21.11 {
-import net.minecraft.client.render.RenderLayers;
-import net.minecraft.client.render.RenderSetup;
+import net.minecraft.client.renderer.rendertype.RenderTypes;
+import net.minecraft.client.renderer.rendertype.RenderSetup;
 //?} else {
-/*import net.minecraft.client.render.RenderPhase.Textures;
+/*import net.minecraft.client.renderer.RenderStateShard.MultiTextureStateShard;
 *///?}
 ```
 
@@ -40,7 +54,7 @@ When a newer version leaves something out that an older one implements, keep the
 
 A whole class that only exists for some versions (such as `MatrixStackMixin`, which only makes sense before 1.21.6's GUI rewrite) can keep an empty class body on the other versions. Before splitting a class like that, look for a hook that works on every version: nametags used to hook label rendering, which 1.21.9 changed, and now replace the name while the render state is built (`LivingEntityRendererMixin`), with no version condition at all. An empty mixin changes nothing, and it keeps the mixin configs the same for every version, since JSON can't hold version comments.
 
-Inactive code sits inside a `/* … */` comment, so it can't contain `/* … */` comments itself: use `//` comments in code that's only active for some versions. For the same reason, don't nest multi-line version blocks; use `//?} else if <condition> {` for more than two version ranges, as in `PlayerEntityRendererMixin` and `SaturnRenderState`.
+Inactive code sits inside a `/* … */` comment, so it can't contain `/* … */` comments itself: use `//` comments in code that's only active for some versions. Version blocks can nest (Stonecutter writes an inactive block inside another as `/^ … ^/`, as in `GlassRenderer`), but for more than two ranges of the same thing, prefer `//?} else if <condition> {`, as in `PlayerEntityRendererMixin` and `SaturnRenderState`.
 
 - `./gradlew "Set active project to <mc>"` (or the Stonecutter IntelliJ plugin) rewrites `src/` so that version's code is the uncommented one, for editing it in the IDE.
 - `./gradlew "Reset active project"` switches back to 1.21.11. **Run it before committing**, so `src/` is always committed with 1.21.11 active.
@@ -62,7 +76,7 @@ For bigger changes, `./gradlew buildAll` builds every version's jar into `build/
 
 ## Adding a Minecraft version
 
-1. Create `versions/<new>/gradle.properties` with `minecraft_version`, `yarn_mappings`, `loader_version` and `fabric_api_version` (copy 1.21.11's and change the values; they're listed at <https://fabricmc.net/develop>). Loom's version is shared, in the root `gradle.properties`.
+1. Create `versions/<new>/gradle.properties` with `minecraft_version`, `loader_version` and `fabric_api_version` (copy 1.21.11's and change the values; they're listed at <https://fabricmc.net/develop>). Loom's version is shared, in the root `gradle.properties`.
 2. Add `<new>` to `stonecutterVersions` in `settings.gradle.kts`.
-3. Build it with `./gradlew :<new>:compileJava` and put what Minecraft changed behind version comments. Check the mixin configs in `src/main/resources/*.mixins.json` as well: a mixin whose target changed fails at startup, not at compile time, so launch it with `./gradlew :<new>:runClient`.
+3. Build it with `./gradlew :<new>:compileJava` and put what Minecraft changed behind version comments. Check the mixin configs in `src/main/resources/*.mixins.json` as well: a mixin whose target changed fails at startup (or when its class first loads, such as in a world), not at compile time, so launch it with `./gradlew :<new>:runClient`.
 4. The release workflow builds everything through `buildAll`, and "Publish to Modrinth" takes the game version from each jar's name, so neither needs changing.

build.gradle.kts

@@ -1,11 +1,14 @@
 // Builds one Minecraft version from the shared src/. Stonecutter runs this for each version in
 // stonecutterVersions (settings.gradle.kts), with that version's versions/<v>/gradle.properties.
 plugins {
-    id("net.fabricmc.fabric-loom-remap")
+    id("dev.kikugie.loom-back-compat")
     `maven-publish`
 }
 
 val minecraftVersion = property("minecraft_version") as String
+// The Minecraft versions the jar loads on (fabric.mod.json); a range where hotfixes share a jar.
+val minecraftCompat = findProperty("minecraft_compat") as String? ?: minecraftVersion
+val javaVersion = if (sc.current.parsed >= "26.1") 25 else 21
 val loaderVersion = property("loader_version") as String
 
 version = "${property("mod_version")}+$minecraftVersion"
@@ -17,7 +20,7 @@ base {
 
 dependencies {
     minecraft("com.mojang:minecraft:$minecraftVersion")
-    mappings("net.fabricmc:yarn:${property("yarn_mappings")}:v2")
+    loomx.applyMojangMappings()
     modImplementation("net.fabricmc:fabric-loader:$loaderVersion")
     modImplementation("net.fabricmc.fabric-api:fabric-api:${property("fabric_api_version")}")
 
@@ -42,23 +45,23 @@ dependencies {
 tasks.processResources {
     val values = mapOf(
         "version" to project.version.toString(),
-        "minecraft_version" to minecraftVersion,
+        "minecraft_version" to minecraftCompat,
         "loader_version" to loaderVersion,
+        "java" to "JAVA_$javaVersion",
     )
     inputs.properties(values)
     filteringCharset = "UTF-8"
-    filesMatching("fabric.mod.json") { expand(values) }
+    filesMatching(listOf("fabric.mod.json", "*.mixins.json")) { expand(values) }
 }
 
 tasks.withType<JavaCompile>().configureEach {
-    options.release = 21
+    options.release = javaVersion
 }
 
 java {
     // Loom attaches the sources jar to remapSourcesJar and build.
     withSourcesJar()
-    sourceCompatibility = JavaVersion.VERSION_21
-    targetCompatibility = JavaVersion.VERSION_21
+    toolchain.languageVersion = JavaLanguageVersion.of(javaVersion)
 }
 
 tasks.jar {

gradle.properties

@@ -6,10 +6,10 @@ org.gradle.caching=true
 # IntelliJ IDEA is not yet fully compatible with configuration cache, see: https://github.com/FabricMC/fabric-loom/issues/1349
 org.gradle.configuration-cache=false
 
-mod_version=0.1.4-beta
+mod_version=0.1.5-beta
 
 # Saturn's emote library (git.selimaj.dev/saturnclientmc/emotes)
-emotes_version=0.1.1
+emotes_version=0.1.2
 
-# Loom, for every Minecraft version (read in settings.gradle.kts).
-loom_version=1.17.21
+# Loom, for every Minecraft version (read by loom-back-compat).
+loomx.loom_version=1.17.21

settings.gradle.kts

@@ -5,16 +5,15 @@ pluginManagement {
         gradlePluginPortal()
         mavenCentral()
     }
-
-    // Loom's version for build.gradle.kts, which can't read properties in its plugins block.
-    val loom_version: String by settings
-    plugins {
-        id("net.fabricmc.fabric-loom-remap") version loom_version
-    }
 }
 
 plugins {
+    // Downloads the Java toolchain a version needs (Java 25 for 26.1+) when it isn't installed.
+    id("org.gradle.toolchains.foojay-resolver-convention") version "1.0.0"
     id("dev.kikugie.stonecutter") version "0.9.8"
+    // Picks the Loom variant per version: remapping for 1.21.x, plain for the unobfuscated 26.1+.
+    // Its version is loomx.loom_version in gradle.properties.
+    id("dev.kikugie.loom-back-compat") version "0.4.2"
 }
 
 rootProject.name = "saturn-client"
@@ -22,8 +21,11 @@ rootProject.name = "saturn-client"
 include("common")
 
 // Versions built by Stonecutter from the shared src/ (see stonecutter.gradle.kts). Each one's
-// versions/<v>/gradle.properties holds its Minecraft, Yarn and Fabric API versions.
-val stonecutterVersions = listOf("1.21.4", "1.21.5", "1.21.6", "1.21.7", "1.21.8", "1.21.9", "1.21.10", "1.21.11")
+// versions/<v>/gradle.properties holds its Minecraft, Fabric Loader and Fabric API versions.
+val stonecutterVersions = listOf(
+    "1.21.4", "1.21.5", "1.21.6", "1.21.7", "1.21.8", "1.21.9", "1.21.10", "1.21.11",
+    "26.1", "26.2", "26.3",
+)
 
 stonecutter {
     create(rootProject) {

src/main/java/org/saturnclient/impl/cosmetics/CloakFeatureRenderer.java

@@ -22,28 +22,30 @@ import org.saturnclient.emotes.fabric.access.BendablePart;
 import org.saturnclient.impl.cosmetics.utils.ShaderUtils;
 import org.saturnclient.saturnclient.SaturnRenderState;
 
-import net.minecraft.client.model.ModelPart;
-import net.minecraft.client.render.OverlayTexture;
-import net.minecraft.client.render.VertexConsumer;
+import net.minecraft.client.model.geom.ModelPart;
+import net.minecraft.client.renderer.texture.OverlayTexture;
+import com.mojang.blaze3d.vertex.VertexConsumer;
 //? if >=1.21.9 {
-import net.minecraft.client.render.command.OrderedRenderCommandQueue;
+import net.minecraft.client.renderer.SubmitNodeCollector;
 //?} else
-//import net.minecraft.client.render.VertexConsumerProvider;
-import net.minecraft.client.render.entity.equipment.EquipmentModel;
-import net.minecraft.client.render.entity.equipment.EquipmentModelLoader;
-import net.minecraft.client.render.entity.equipment.EquipmentModel.LayerType;
-import net.minecraft.client.render.entity.feature.FeatureRenderer;
-import net.minecraft.client.render.entity.feature.FeatureRendererContext;
-import net.minecraft.client.render.entity.model.PlayerEntityModel;
-import net.minecraft.client.render.entity.state.PlayerEntityRenderState;
-import net.minecraft.client.util.math.MatrixStack;
-import net.minecraft.component.DataComponentTypes;
-import net.minecraft.component.type.EquippableComponent;
-import net.minecraft.item.ItemStack;
-import net.minecraft.item.equipment.EquipmentAsset;
-import net.minecraft.registry.RegistryKey;
-import net.minecraft.util.math.MathHelper;
-import net.minecraft.util.math.Vec3d;
+//import net.minecraft.client.renderer.MultiBufferSource;
+import net.minecraft.client.resources.model.EquipmentClientInfo;
+import net.minecraft.client.resources.model.EquipmentAssetManager;
+import net.minecraft.client.resources.model.EquipmentClientInfo.LayerType;
+import net.minecraft.client.renderer.entity.layers.RenderLayer;
+import net.minecraft.client.renderer.entity.RenderLayerParent;
+//? if >=1.21.11 {
+import net.minecraft.client.model.player.PlayerModel;
+//?} else
+//import net.minecraft.client.model.PlayerModel;
+import net.minecraft.client.renderer.entity.state.AvatarRenderState;
+import com.mojang.blaze3d.vertex.PoseStack;
+import net.minecraft.core.component.DataComponents;
+import net.minecraft.world.item.equipment.Equippable;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.item.equipment.EquipmentAsset;
+import net.minecraft.resources.ResourceKey;
+import net.minecraft.util.Mth;
 
 /**
  * The cloak renderer
@@ -52,8 +54,8 @@ import net.minecraft.util.math.Vec3d;
  * - **Curving**: Curves when player velocity increases.
  * - **Wavey**: Makes the cloak feel like wind, when jump sprinting.
  */
-public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderState, PlayerEntityModel> {
-    private final EquipmentModelLoader equipmentModelLoader;
+public class CloakFeatureRenderer extends RenderLayer<AvatarRenderState, PlayerModel> {
+    private final EquipmentAssetManager equipmentModelLoader;
     private static final int PARTS = 24;
     private final float[] segmentValues = new float[PARTS];
     private static final int H_PARTS = 6;
@@ -96,19 +98,19 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
     private static final PxRect TOP_RECT = new PxRect(8, 0, 80, 8);
     private static final PxRect BOTTOM_RECT = new PxRect(88, 0, 80, 8);
 
-    public CloakFeatureRenderer(FeatureRendererContext<PlayerEntityRenderState, PlayerEntityModel> context,
-            EquipmentModelLoader equipmentModelLoader) {
+    public CloakFeatureRenderer(RenderLayerParent<AvatarRenderState, PlayerModel> context,
+            EquipmentAssetManager equipmentModelLoader) {
         super(context);
         this.equipmentModelLoader = equipmentModelLoader;
         Arrays.fill(segmentValues, 0.0f);
     }
 
-    private boolean hasCustomModelForLayer(ItemStack stack, EquipmentModel.LayerType layerType) {
-        EquippableComponent equippableComponent = (EquippableComponent) stack
-                .get(DataComponentTypes.EQUIPPABLE);
+    private boolean hasCustomModelForLayer(ItemStack stack, EquipmentClientInfo.LayerType layerType) {
+        Equippable equippableComponent = (Equippable) stack
+                .get(DataComponents.EQUIPPABLE);
         if (equippableComponent != null && !equippableComponent.assetId().isEmpty()) {
-            EquipmentModel equipmentModel = this.equipmentModelLoader
-                    .get((RegistryKey<EquipmentAsset>) equippableComponent.assetId().get());
+            EquipmentClientInfo equipmentModel = this.equipmentModelLoader
+                    .get((ResourceKey<EquipmentAsset>) equippableComponent.assetId().get());
             return !equipmentModel.getLayers(layerType).isEmpty();
         } else {
             return false;
@@ -116,7 +118,7 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
     }
 
     private void vertex(VertexConsumer vc, Matrix4f posMat, Matrix3f normalMat,
-            Vec3d pos, int color,
+            net.minecraft.world.phys.Vec3 pos, int color,
             float u, float v, int overlay, int light,
             float nx, float ny, float nz) {
 
@@ -126,7 +128,7 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
         Vector3f n = new Vector3f(nx, ny, nz);
         n.mul(normalMat);
 
-        vc.vertex(
+        vc.addVertex(
                 p.x(), p.y(), p.z(),
                 color,
                 u, v,
@@ -134,13 +136,13 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
                 n.x(), n.y(), n.z());
     }
 
-    private void renderCapeQuad(VertexConsumer vertexConsumer, MatrixStack.Entry entry,
-            Vec3d bottomLeft, Vec3d bottomRight, Vec3d topRight, Vec3d topLeft,
+    private void renderCapeQuad(VertexConsumer vertexConsumer, PoseStack.Pose entry,
+            net.minecraft.world.phys.Vec3 bottomLeft, net.minecraft.world.phys.Vec3 bottomRight, net.minecraft.world.phys.Vec3 topRight, net.minecraft.world.phys.Vec3 topLeft,
             float u1, float v1, float u2, float v2, int light, int overlay,
             float normalX, float normalY, float normalZ, boolean flipWinding) {
         // Extract matrix (you must transform positions manually now)
-        Matrix4f pos = entry.getPositionMatrix();
-        Matrix3f normalMat = entry.getNormalMatrix();
+        Matrix4f pos = entry.pose();
+        Matrix3f normalMat = entry.normal();
 
         int color = 0xFFFFFFFF; // white RGBA
 
@@ -163,8 +165,8 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
         }
     }
 
-    private void renderCape(MatrixStack.Entry entry, VertexConsumer vertexConsumer,
-            PlayerEntityRenderState playerState, int light, int overlay) {
+    private void renderCape(PoseStack.Pose entry, VertexConsumer vertexConsumer,
+            AvatarRenderState playerState, int light, int overlay) {
 
         float capeWidth = 10.0f / 16.0f;
         float capeHeight = 16.0f / 16.0f;
@@ -226,8 +228,8 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
         // 2. Grid
         // =============================
 
-        Vec3d[][] inner = new Vec3d[H_PARTS + 1][PARTS + 1];
-        Vec3d[][] outer = new Vec3d[H_PARTS + 1][PARTS + 1];
+        net.minecraft.world.phys.Vec3[][] inner = new net.minecraft.world.phys.Vec3[H_PARTS + 1][PARTS + 1];
+        net.minecraft.world.phys.Vec3[][] outer = new net.minecraft.world.phys.Vec3[H_PARTS + 1][PARTS + 1];
 
         for (int x = 0; x <= H_PARTS; x++) {
 
@@ -259,8 +261,8 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
                 float thickY = sinA * capeDepth;
                 float thickZ = cosA * capeDepth;
 
-                inner[x][i] = new Vec3d(xPos, y - curveY, z - curveZ);
-                outer[x][i] = new Vec3d(xPos, (y - curveY) - thickY, (z - curveZ) - thickZ);
+                inner[x][i] = new net.minecraft.world.phys.Vec3(xPos, y - curveY, z - curveZ);
+                outer[x][i] = new net.minecraft.world.phys.Vec3(xPos, (y - curveY) - thickY, (z - curveZ) - thickZ);
             }
 
         }
@@ -285,15 +287,15 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
                 float bvStart = backV1 + backPartV * i;
                 float bvEnd = backV1 + backPartV * (i + 1);
 
-                Vec3d innerTL = inner[x + 1][i];
-                Vec3d innerTR = inner[x][i];
-                Vec3d innerBL = inner[x + 1][i + 1];
-                Vec3d innerBR = inner[x][i + 1];
+                net.minecraft.world.phys.Vec3 innerTL = inner[x + 1][i];
+                net.minecraft.world.phys.Vec3 innerTR = inner[x][i];
+                net.minecraft.world.phys.Vec3 innerBL = inner[x + 1][i + 1];
+                net.minecraft.world.phys.Vec3 innerBR = inner[x][i + 1];
 
-                Vec3d outerTL = outer[x + 1][i];
-                Vec3d outerTR = outer[x][i];
-                Vec3d outerBL = outer[x + 1][i + 1];
-                Vec3d outerBR = outer[x][i + 1];
+                net.minecraft.world.phys.Vec3 outerTL = outer[x + 1][i];
+                net.minecraft.world.phys.Vec3 outerTR = outer[x][i];
+                net.minecraft.world.phys.Vec3 outerBL = outer[x + 1][i + 1];
+                net.minecraft.world.phys.Vec3 outerBR = outer[x][i + 1];
 
                 // FRONT
                 renderCapeQuad(vertexConsumer, entry,
@@ -315,10 +317,10 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
 
         for (int i = 0; i < PARTS; i++) {
 
-            Vec3d innerTop = inner[H_PARTS][i];
-            Vec3d innerBot = inner[H_PARTS][i + 1];
-            Vec3d outerTop = outer[H_PARTS][i];
-            Vec3d outerBot = outer[H_PARTS][i + 1];
+            net.minecraft.world.phys.Vec3 innerTop = inner[H_PARTS][i];
+            net.minecraft.world.phys.Vec3 innerBot = inner[H_PARTS][i + 1];
+            net.minecraft.world.phys.Vec3 outerTop = outer[H_PARTS][i];
+            net.minecraft.world.phys.Vec3 outerBot = outer[H_PARTS][i + 1];
 
             float vStart = leftV1 + leftPartV * i;
             float vEnd = leftV1 + leftPartV * (i + 1);
@@ -336,10 +338,10 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
 
         for (int i = 0; i < PARTS; i++) {
 
-            Vec3d innerTop = inner[0][i];
-            Vec3d innerBot = inner[0][i + 1];
-            Vec3d outerTop = outer[0][i];
-            Vec3d outerBot = outer[0][i + 1];
+            net.minecraft.world.phys.Vec3 innerTop = inner[0][i];
+            net.minecraft.world.phys.Vec3 innerBot = inner[0][i + 1];
+            net.minecraft.world.phys.Vec3 outerTop = outer[0][i];
+            net.minecraft.world.phys.Vec3 outerBot = outer[0][i + 1];
 
             float vStart = rightV1 + rightPartV * i;
             float vEnd = rightV1 + rightPartV * (i + 1);
@@ -357,10 +359,10 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
 
         for (int x = 0; x < H_PARTS; x++) {
 
-            Vec3d outerL = outer[x][0];
-            Vec3d outerR = outer[x + 1][0];
-            Vec3d innerR = inner[x + 1][0];
-            Vec3d innerL = inner[x][0];
+            net.minecraft.world.phys.Vec3 outerL = outer[x][0];
+            net.minecraft.world.phys.Vec3 outerR = outer[x + 1][0];
+            net.minecraft.world.phys.Vec3 innerR = inner[x + 1][0];
+            net.minecraft.world.phys.Vec3 innerL = inner[x][0];
 
             float uStart = topU1 + (topU2 - topU1) * ((float) x / H_PARTS);
             float uEnd = topU1 + (topU2 - topU1) * ((float) (x + 1) / H_PARTS);
@@ -377,10 +379,10 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
 
         for (int x = 0; x < H_PARTS; x++) {
 
-            Vec3d innerL = inner[x][PARTS];
-            Vec3d innerR = inner[x + 1][PARTS];
-            Vec3d outerR = outer[x + 1][PARTS];
-            Vec3d outerL = outer[x][PARTS];
+            net.minecraft.world.phys.Vec3 innerL = inner[x][PARTS];
+            net.minecraft.world.phys.Vec3 innerR = inner[x + 1][PARTS];
+            net.minecraft.world.phys.Vec3 outerR = outer[x + 1][PARTS];
+            net.minecraft.world.phys.Vec3 outerL = outer[x][PARTS];
 
             float uStart = bottomU1 + (bottomU2 - bottomU1) * ((float) x / H_PARTS);
             float uEnd = bottomU1 + (bottomU2 - bottomU1) * ((float) (x + 1) / H_PARTS);
@@ -421,7 +423,7 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
      * An emote that bends the torso a little leans the chest from the hips, so the cloak hangs from
      * where the top of the back ends up, turned as much as the torso is there.
      */
-    private static void followBend(MatrixStack matrices, ModelPart body) {
+    private static void followBend(PoseStack matrices, ModelPart body) {
         LimbBend bend = ((BendablePart) (Object) body).saturnEmotes$getBend();
         if (bend == null || bend.isStraight()) {
             return;
@@ -433,7 +435,11 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
         matrices.translate(top[0] / 16.0f, top[1] / 16.0f, top[2] / 16.0f);
 
         Vec3 axis = bend.axis();
-        matrices.multiply(new Quaternionf().rotationAxis(bend.angleAt(0), axis.x(), axis.y(), axis.z()));
+        Quaternionf rotation = new Quaternionf().rotationAxis(bend.angleAt(0), axis.x(), axis.y(), axis.z());
+        //? if >=26.3 {
+        /*matrices.rotate(rotation);
+        *///?} else
+        matrices.mulPose(rotation);
     }
 
     // Shift array left and insert new value at the start
@@ -450,17 +456,20 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
     private long lastUpdate = 0;
 
     @Override
-    public void render(MatrixStack matrices,
     //? if >=1.21.9 {
-            OrderedRenderCommandQueue output,
+    public void submit(PoseStack matrices,
     //?} else
-            //VertexConsumerProvider output,
-            int light, PlayerEntityRenderState state, float limbAngle, float limbDistance) {
-        if (state.invisible || !state.capeVisible
+    //public void render(PoseStack matrices,
             //? if >=1.21.9 {
-                || state.skinTextures.cape() != null) {
+            SubmitNodeCollector output,
             //?} else
-                //|| state.skinTextures.capeTexture() != null) {
+            //MultiBufferSource output,
+            int light, AvatarRenderState state, float limbAngle, float limbDistance) {
+        if (state.isInvisible || !state.showCape
+                //? if >=1.21.9 {
+                || state.skin.cape() != null) {
+                //?} else
+                //|| state.skin.capeTexture() != null) {
             return;
         }
 
@@ -475,7 +484,7 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
 
         IdentifierRef customCape = Cloaks.getCurrentCloakTexture(player.cloak);
         if (customCape == null
-                || this.hasCustomModelForLayer(state.equippedChestStack, LayerType.WINGS)) {
+                || this.hasCustomModelForLayer(state.chestEquipment, LayerType.WINGS)) {
             return;
         }
 
@@ -487,33 +496,33 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
         skyLight = Math.max(skyLight, minBrightness);
         light = (skyLight << 20) | (blockLight << 4);
 
-        matrices.push();
+        matrices.pushPose();
 
         // On the back: the whole player (which emotes like the backflip turn), then the body's position
         // and turn (which crouching and emotes move), then the chest's lean when an emote bends the torso
-        PlayerEntityModel model = this.getContextModel();
+        PlayerModel model = this.getParentModel();
         //? if >=1.21.5 {
-        model.getRootPart().applyTransform(matrices);
-        model.body.applyTransform(matrices);
+        model.root().translateAndRotate(matrices);
+        model.body.translateAndRotate(matrices);
         //?} else {
-        /*model.getRootPart().rotate(matrices);
-        model.body.rotate(matrices);
+        /*model.root().translateAndRotate(matrices);
+        model.body.translateAndRotate(matrices);
         *///?}
         followBend(matrices, model.body);
 
         matrices.translate(0.0f, 0.0f, 0.12f);
 
-        if (this.hasCustomModelForLayer(state.equippedChestStack, LayerType.HUMANOID)) {
+        if (this.hasCustomModelForLayer(state.chestEquipment, LayerType.HUMANOID)) {
             matrices.translate(0.0F, -0.053125F, 0.06875F);
         }
 
         long now = System.currentTimeMillis();
         if (now - lastUpdate >= 20) {
-            float velX = Math.min(0.8f, state.field_53537 / 108.0f);
-            float rawVelY = state.field_53536;
+            float velX = Math.min(0.8f, state.capeLean / 108.0f);
+            float rawVelY = state.capeFlap;
             float velY = (rawVelY > 3.4f ? rawVelY : rawVelY < -3.4f ? rawVelY : 0.0f) / 16;
 
-            float value = Math.max(0.0f, Math.min(2.0f, state.isSwimming ? 0.0f : velX + velY));
+            float value = Math.max(0.0f, Math.min(2.0f, state.isVisuallySwimming ? 0.0f : velX + velY));
 
             if (Config.cloakPhysics.value) {
                 updateSegmentValues(segmentValues[0] + (value - segmentValues[0]) * 0.3f);
@@ -525,15 +534,15 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
 
         final int l = light;
 
-        horizontalCurve = MathHelper.clamp(state.field_53537 / 150.0f, -1.0f, 1.0f);
+        horizontalCurve = Mth.clamp(state.capeLean / 150.0f, -1.0f, 1.0f);
 
         //? if >=1.21.9 {
-        output.submitCustom(matrices, ShaderUtils.getRenderLayer(customCape), (entry, vertexConsumer) -> {
-            renderCape(entry, vertexConsumer, state, l, OverlayTexture.DEFAULT_UV);
+        output.submitCustomGeometry(matrices, ShaderUtils.getRenderLayer(customCape), (entry, vertexConsumer) -> {
+            renderCape(entry, vertexConsumer, state, l, OverlayTexture.NO_OVERLAY);
         });
         //?} else
-        //renderCape(matrices.peek(), output.getBuffer(ShaderUtils.getRenderLayer(customCape)), state, l, OverlayTexture.DEFAULT_UV);
+        //renderCape(matrices.last(), output.getBuffer(ShaderUtils.getRenderLayer(customCape)), state, l, OverlayTexture.NO_OVERLAY);
 
-        matrices.pop();
+        matrices.popPose();
     }
 }

src/main/java/org/saturnclient/impl/cosmetics/HatFeatureRenderer.java

@@ -5,55 +5,61 @@ import org.saturnclient.impl.cosmetics.obj.MtlLoader;
 import org.saturnclient.impl.cosmetics.obj.ObjModel;
 import org.saturnclient.saturnclient.SaturnRenderState;
 
-import net.minecraft.client.render.OverlayTexture;
+import net.minecraft.client.renderer.texture.OverlayTexture;
 //? if >=1.21.9 {
-import net.minecraft.client.render.command.OrderedRenderCommandQueue;
+import net.minecraft.client.renderer.SubmitNodeCollector;
 //?} else
-//import net.minecraft.client.render.VertexConsumerProvider;
-import net.minecraft.client.render.entity.feature.FeatureRenderer;
-import net.minecraft.client.render.entity.feature.FeatureRendererContext;
-import net.minecraft.client.render.entity.model.PlayerEntityModel;
-import net.minecraft.client.render.entity.state.PlayerEntityRenderState;
-import net.minecraft.client.util.math.MatrixStack;
+//import net.minecraft.client.renderer.MultiBufferSource;
+import net.minecraft.client.renderer.entity.layers.RenderLayer;
+import net.minecraft.client.renderer.entity.RenderLayerParent;
+//? if >=1.21.11 {
+import net.minecraft.client.model.player.PlayerModel;
+//?} else
+//import net.minecraft.client.model.PlayerModel;
+import net.minecraft.client.renderer.entity.state.AvatarRenderState;
+import com.mojang.blaze3d.vertex.PoseStack;
 
-public class HatFeatureRenderer extends FeatureRenderer<PlayerEntityRenderState, PlayerEntityModel> {
-    public HatFeatureRenderer(FeatureRendererContext<PlayerEntityRenderState, PlayerEntityModel> context) {
+public class HatFeatureRenderer extends RenderLayer<AvatarRenderState, PlayerModel> {
+    public HatFeatureRenderer(RenderLayerParent<AvatarRenderState, PlayerModel> context) {
         super(context);
     }
 
     @Override
-    public void render(MatrixStack matrices,
     //? if >=1.21.9 {
-            OrderedRenderCommandQueue output,
+    public void submit(PoseStack matrices,
     //?} else
-            //VertexConsumerProvider output,
-            int light, PlayerEntityRenderState state, float limbAngle, float limbDistance) {
+    //public void render(PoseStack matrices,
+            //? if >=1.21.9 {
+            SubmitNodeCollector output,
+            //?} else
+            //MultiBufferSource output,
+            int light, AvatarRenderState state, float limbAngle, float limbDistance) {
         //? if >=1.21.8 {
         SaturnPlayer player = state.getData(SaturnRenderState.saturnDataKey);
         //?} else
         //SaturnPlayer player = SaturnPlayer.get(state.name);
 
-        if (state.invisible || player == null || player.hat.isEmpty()) {
+        if (state.isInvisible || player == null || player.hat.isEmpty()) {
             return;
         }
 
-        matrices.push();
+        matrices.pushPose();
 
         // On the head, as vanilla places head items: the whole player (which emotes like the backflip
         // turn), then the head's position, turn and scale (which crouching and emotes move)
-        PlayerEntityModel model = this.getContextModel();
+        PlayerModel model = this.getParentModel();
         //? if >=1.21.5 {
-        model.getRootPart().applyTransform(matrices);
-        model.head.applyTransform(matrices);
+        model.root().translateAndRotate(matrices);
+        model.head.translateAndRotate(matrices);
         //?} else {
-        /*model.getRootPart().rotate(matrices);
-        model.head.rotate(matrices);
+        /*model.root().translateAndRotate(matrices);
+        model.head.translateAndRotate(matrices);
         *///?}
 
         ObjModel.cosmetic("hat", player.hat).render(MtlLoader.cosmetic(player.hat),
                 matrices, output, light,
-                OverlayTexture.DEFAULT_UV);
+                OverlayTexture.NO_OVERLAY);
 
-        matrices.pop();
+        matrices.popPose();
     }
 }

src/main/java/org/saturnclient/impl/cosmetics/obj/MtlLoader.java

@@ -8,15 +8,15 @@ import java.util.Map;
 
 import de.javagl.obj.*;
 
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.util.Identifier;
+import net.minecraft.client.Minecraft;
+import net.minecraft.resources.Identifier;
 
 public class MtlLoader {
     static Map<Identifier, Map<String, Mtl>> loadedMtls = new HashMap<>();
 
     static Map<String, Mtl> loadMtl(Identifier mtlId) throws IOException {
-        try (InputStream is = MinecraftClient.getInstance().getResourceManager()
-                .getResource(mtlId).get().getInputStream()) {
+        try (InputStream is = Minecraft.getInstance().getResourceManager()
+                .getResource(mtlId).get().open()) {
             List<Mtl> mtlList = MtlReader.read(is);
             Map<String, Mtl> mtlMap = new java.util.LinkedHashMap<>();
             for (Mtl mtl : mtlList) {
@@ -51,6 +51,6 @@ public class MtlLoader {
         if (mtlId.isEmpty())
             mtlId = "white";
 
-        return of(Identifier.of("saturnclient", "models/cosmetic/materials/" + mtlId + ".mtl"));
+        return of(Identifier.fromNamespaceAndPath("saturnclient", "models/cosmetic/materials/" + mtlId + ".mtl"));
     }
 }

src/main/java/org/saturnclient/impl/cosmetics/obj/ObjModel.java

@@ -12,15 +12,16 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 
 import de.javagl.obj.Mtl;
 import de.javagl.obj.Obj;
-import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.Minecraft;
 //? if >=1.21.9 {
-import net.minecraft.client.render.command.OrderedRenderCommandQueue;
+import net.minecraft.client.renderer.SubmitNodeCollector;
 //?} else
-//import net.minecraft.client.render.VertexConsumerProvider;
-import net.minecraft.client.util.math.MatrixStack;
-import net.minecraft.resource.Resource;
-import net.minecraft.resource.ResourceManager;
-import net.minecraft.util.Identifier;
+//import net.minecraft.client.renderer.MultiBufferSource;
+import com.mojang.blaze3d.vertex.PoseStack;
+import org.joml.Quaternionf;
+import net.minecraft.server.packs.resources.Resource;
+import net.minecraft.server.packs.resources.ResourceManager;
+import net.minecraft.resources.Identifier;
 
 public class ObjModel {
     private static final ObjectMapper MAPPER = new ObjectMapper();
@@ -46,7 +47,7 @@ public class ObjModel {
     Config config;
 
     public static ObjModel cosmetic(String cosmeticKind, String id) {
-        return of(Identifier.of("saturnclient", "models/cosmetic/" + cosmeticKind + "/" + id.split("_")[0] + "/model"));
+        return of(Identifier.fromNamespaceAndPath("saturnclient", "models/cosmetic/" + cosmeticKind + "/" + id.split("_")[0] + "/model"));
     }
 
     public static ObjModel of(Identifier obj) {
@@ -59,8 +60,8 @@ public class ObjModel {
     }
 
     ObjModel(Identifier identifier) {
-        Identifier objId = Identifier.of(identifier.getNamespace(), identifier.getPath() + ".obj");
-        Identifier jsonId = Identifier.of(identifier.getNamespace(), identifier.getPath() + ".json");
+        Identifier objId = Identifier.fromNamespaceAndPath(identifier.getNamespace(), identifier.getPath() + ".obj");
+        Identifier jsonId = Identifier.fromNamespaceAndPath(identifier.getNamespace(), identifier.getPath() + ".json");
 
         try {
             this.obj = ObjRenderer.loadObj(objId);
@@ -69,11 +70,11 @@ public class ObjModel {
         }
 
         // Try loading JSON config if it exists
-        ResourceManager resourceManager = MinecraftClient.getInstance().getResourceManager();
+        ResourceManager resourceManager = Minecraft.getInstance().getResourceManager();
         Optional<Resource> resource = resourceManager.getResource(jsonId);
 
         if (resource.isPresent()) {
-            try (InputStream stream = resource.get().getInputStream()) {
+            try (InputStream stream = resource.get().open()) {
                 this.config = MAPPER.readValue(stream, Config.class);
             } catch (Exception e) {
                 e.printStackTrace();
@@ -81,29 +82,37 @@ public class ObjModel {
         }
     }
 
-    public void render(Map<String, Mtl> mtlMap, MatrixStack matrices,
+    public void render(Map<String, Mtl> mtlMap, PoseStack matrices,
             //? if >=1.21.9 {
-            OrderedRenderCommandQueue output,
+            SubmitNodeCollector output,
             //?} else
-            //VertexConsumerProvider output,
+            //MultiBufferSource output,
             int light, int overlay) {
-        matrices.push();
+        matrices.pushPose();
 
-        matrices.multiply(net.minecraft.util.math.RotationAxis.POSITIVE_X.rotationDegrees(180.0f));
-        matrices.multiply(net.minecraft.util.math.RotationAxis.POSITIVE_Y.rotationDegrees(180.0f));
+        rotate(matrices, com.mojang.math.Axis.XP.rotationDegrees(180.0f));
+        rotate(matrices, com.mojang.math.Axis.YP.rotationDegrees(180.0f));
 
         if (this.config != null) {
             matrices.translate(config.transform.x, config.transform.y, config.transform.z);
 
             matrices.scale(config.scale.x, config.scale.y, config.scale.z);
 
-            matrices.multiply(net.minecraft.util.math.RotationAxis.POSITIVE_X.rotationDegrees(config.rotation.x));
-            matrices.multiply(net.minecraft.util.math.RotationAxis.POSITIVE_Y.rotationDegrees(config.rotation.y));
-            matrices.multiply(net.minecraft.util.math.RotationAxis.POSITIVE_Z.rotationDegrees(config.rotation.z));
+            rotate(matrices, com.mojang.math.Axis.XP.rotationDegrees(config.rotation.x));
+            rotate(matrices, com.mojang.math.Axis.YP.rotationDegrees(config.rotation.y));
+            rotate(matrices, com.mojang.math.Axis.ZP.rotationDegrees(config.rotation.z));
         }
 
         ObjRenderer.renderObj(this.obj, mtlMap, matrices, output, light, overlay);
 
-        matrices.pop();
+        matrices.popPose();
+    }
+
+    // 26.3 renamed PoseStack's quaternion mulPose to rotate.
+    private static void rotate(PoseStack matrices, Quaternionf rotation) {
+        //? if >=26.3 {
+        /*matrices.rotate(rotation);
+        *///?} else
+        matrices.mulPose(rotation);
     }
 }

src/main/java/org/saturnclient/impl/cosmetics/obj/ObjRenderer.java

@@ -9,32 +9,35 @@ import org.saturnclient.impl.cosmetics.utils.ShaderUtils;
 
 import de.javagl.obj.*;
 
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.client.render.RenderLayer;
-import net.minecraft.client.render.VertexConsumer;
-//? if >=1.21.9 {
-import net.minecraft.client.render.command.OrderedRenderCommandQueue;
+import net.minecraft.client.Minecraft;
+//? if >=1.21.11 {
+import net.minecraft.client.renderer.rendertype.RenderType;
 //?} else
-//import net.minecraft.client.render.VertexConsumerProvider;
-import net.minecraft.client.util.math.MatrixStack;
-import net.minecraft.util.Identifier;
+//import net.minecraft.client.renderer.RenderType;
+import com.mojang.blaze3d.vertex.VertexConsumer;
+//? if >=1.21.9 {
+import net.minecraft.client.renderer.SubmitNodeCollector;
+//?} else
+//import net.minecraft.client.renderer.MultiBufferSource;
+import com.mojang.blaze3d.vertex.PoseStack;
+import net.minecraft.resources.Identifier;
 
 public class ObjRenderer {
 
     public static Obj loadObj(Identifier objId) throws IOException {
-        try (InputStream is = MinecraftClient.getInstance().getResourceManager()
-                .getResource(objId).get().getInputStream()) {
+        try (InputStream is = Minecraft.getInstance().getResourceManager()
+                .getResource(objId).get().open()) {
             return ObjReader.read(is);
         }
     }
 
     public static void renderObj(Obj obj,
             Map<String, Mtl> mtlMap,
-            MatrixStack matrices,
+            PoseStack matrices,
             //? if >=1.21.9 {
-            OrderedRenderCommandQueue output,
+            SubmitNodeCollector output,
             //?} else
-            //VertexConsumerProvider output,
+            //MultiBufferSource output,
             int light,
             int overlay) {
 
@@ -65,20 +68,20 @@ public class ObjRenderer {
                 }
             }
 
-            RenderLayer layer = ShaderUtils.getRenderLayer(texture);
+            RenderType layer = ShaderUtils.getRenderLayer(texture);
 
             final float fr = r, fg = g, fb = b;
             final Obj finalObj = groupObj;
 
             //? if >=1.21.9 {
-            output.submitCustom(matrices, layer,
+            output.submitCustomGeometry(matrices, layer,
                     (entry, consumer) -> drawGroup(finalObj, consumer, entry, light, overlay, fr, fg, fb));
             //?} else
-            //drawGroup(finalObj, output.getBuffer(layer), matrices.peek(), light, overlay, fr, fg, fb);
+            //drawGroup(finalObj, output.getBuffer(layer), matrices.last(), light, overlay, fr, fg, fb);
         }
     }
 
-    private static void drawGroup(Obj obj, VertexConsumer consumer, MatrixStack.Entry entry, int light, int overlay,
+    private static void drawGroup(Obj obj, VertexConsumer consumer, PoseStack.Pose entry, int light, int overlay,
             float r, float g, float b) {
         int faces = obj.getNumFaces();
 
@@ -93,7 +96,7 @@ public class ObjRenderer {
     }
 
     private static void writeVertex(Obj obj, ObjFace face, int index, VertexConsumer consumer,
-            MatrixStack.Entry matrix, int light, int overlay,
+            PoseStack.Pose matrix, int light, int overlay,
             float r, float g, float b) {
 
         FloatTuple pos = obj.getVertex(face.getVertexIndex(index));
@@ -118,11 +121,11 @@ public class ObjRenderer {
             v = 1f - tc.getY(); // Flip V: OBJ bottom-left origin -> Minecraft top-left
         }
 
-        consumer.vertex(matrix, x, y, z)
-                .color(r, g, b, 1f)
-                .texture(u, v)
-                .overlay(overlay)
-                .light(light)
-                .normal(matrix, nx, ny, nz);
+        consumer.addVertex(matrix, x, y, z)
+                .setColor(r, g, b, 1f)
+                .setUv(u, v)
+                .setOverlay(overlay)
+                .setLight(light)
+                .setNormal(matrix, nx, ny, nz);
     }
 }

src/main/java/org/saturnclient/impl/cosmetics/utils/IdentifierUtils.java

@@ -3,9 +3,9 @@ package org.saturnclient.impl.cosmetics.utils;
 import org.saturnclient.common.ref.asset.IdentifierRef;
 import org.saturnclient.saturnclient.SaturnClient;
 
-import net.minecraft.client.texture.NativeImage;
-import net.minecraft.client.texture.NativeImageBackedTexture;
-import net.minecraft.util.Identifier;
+import com.mojang.blaze3d.platform.NativeImage;
+import net.minecraft.client.renderer.texture.DynamicTexture;
+import net.minecraft.resources.Identifier;
 
 import java.awt.image.BufferedImage;
 import java.awt.image.DataBufferInt;
@@ -28,7 +28,7 @@ public class IdentifierUtils {
                 int index = 0;
                 for (int y = 0; y < height; y++) {
                     for (int x = 0; x < width; x++) {
-                        nativeImage.setColorArgb(x, y, pixels[index++]);
+                        nativeImage.setPixel(x, y, pixels[index++]);
                     }
                 }
 
@@ -36,7 +36,7 @@ public class IdentifierUtils {
 
                 for (int y = 0; y < height; y++) {
                     for (int x = 0; x < width; x++) {
-                        nativeImage.setColorArgb(x, y, bufferedImage.getRGB(x, y));
+                        nativeImage.setPixel(x, y, bufferedImage.getRGB(x, y));
                     }
                 }
 
@@ -44,13 +44,13 @@ public class IdentifierUtils {
 
             SaturnClient.client.execute(() -> {
                 //? if >=1.21.5 {
-                NativeImageBackedTexture texture = new NativeImageBackedTexture(
+                DynamicTexture texture = new DynamicTexture(
                         () -> identifier.toString(),
                         nativeImage);
                 //?} else
-                //NativeImageBackedTexture texture = new NativeImageBackedTexture(nativeImage);
+                //DynamicTexture texture = new DynamicTexture(nativeImage);
 
-                SaturnClient.client.getTextureManager().registerTexture(identifier, texture);
+                SaturnClient.client.getTextureManager().register(identifier, texture);
             });
 
         } catch (Exception e) {

src/main/java/org/saturnclient/impl/cosmetics/utils/ShaderUtils.java

@@ -7,29 +7,38 @@ import org.saturnclient.cosmetics.utils.GifUtils;
 import com.mojang.blaze3d.pipeline.RenderPipeline;
 
 //? if >=1.21.5
-import net.minecraft.client.gl.RenderPipelines;
-import net.minecraft.client.render.RenderLayer;
+import net.minecraft.client.renderer.RenderPipelines;
+//? if >=1.21.11 {
+import net.minecraft.client.renderer.rendertype.RenderType;
+//?} else
+//import net.minecraft.client.renderer.RenderType;
 //? if <1.21.5 {
-/*import net.minecraft.client.render.RenderPhase;
-import net.minecraft.client.render.VertexFormat.DrawMode;
-import net.minecraft.client.render.VertexFormats;
+/*import net.minecraft.client.renderer.RenderStateShard;
+import com.mojang.blaze3d.vertex.VertexFormat.Mode;
+import com.mojang.blaze3d.vertex.DefaultVertexFormat;
 *///?}
 //? if >=1.21.11 {
-import net.minecraft.client.render.RenderLayers;
-import net.minecraft.client.render.RenderSetup;
-import net.minecraft.client.render.block.entity.AbstractEndPortalBlockEntityRenderer;
+import net.minecraft.client.renderer.rendertype.RenderTypes;
+import net.minecraft.client.renderer.rendertype.RenderSetup;
+import net.minecraft.client.renderer.blockentity.AbstractEndPortalRenderer;
 //?} else {
-/*import net.minecraft.client.render.RenderPhase.Textures;
-import net.minecraft.client.render.block.entity.EndPortalBlockEntityRenderer;
+/*import net.minecraft.client.renderer.RenderStateShard.MultiTextureStateShard;
+import net.minecraft.client.renderer.blockentity.TheEndPortalRenderer;
+*///?}
+import net.minecraft.resources.Identifier;
+//? if >=26.3
+//import com.mojang.renderpearl.api.pipeline.ColorTargetState;
+//? if >=26.1 {
+/*import java.util.HashMap;
+import java.util.Map;
 *///?}
-import net.minecraft.util.Identifier;
 
 public class ShaderUtils {
     // Render pipelines exist from 1.21.5; before that the layer names a shader program directly.
     //? if >=1.21.5 {
     public static final RenderPipeline END_GATEWAY_PIPELINE = RenderPipelines.register(
             RenderPipeline.builder(new RenderPipeline.Snippet[] {
-                    RenderPipelines.RENDERTYPE_END_PORTAL_SNIPPET })
+                    RenderPipelines.END_PORTAL_SNIPPET })
                     .withLocation("pipeline/end_gateway")
                     .withShaderDefine("PORTAL_LAYERS", 16)
                     .withCull(false)
@@ -37,43 +46,43 @@ public class ShaderUtils {
     //?}
 
     //? if >=1.21.11 {
-    public static final RenderLayer END_GATEWAY = RenderLayer.of("end_gateway",
+    public static final RenderType END_GATEWAY = RenderType.create("end_gateway",
             RenderSetup.builder(END_GATEWAY_PIPELINE)
-                    .texture("Sampler0", AbstractEndPortalBlockEntityRenderer.SKY_TEXTURE)
-                    .texture("Sampler1", AbstractEndPortalBlockEntityRenderer.PORTAL_TEXTURE).build());
+                    .withTexture("Sampler0", AbstractEndPortalRenderer.END_SKY_LOCATION)
+                    .withTexture("Sampler1", AbstractEndPortalRenderer.END_PORTAL_LOCATION).createRenderSetup());
     //?} else if >=1.21.6 {
-    /*public static final RenderLayer END_GATEWAY = RenderLayer.of("end_gateway", 1536, false, false,
+    /*public static final RenderType END_GATEWAY = RenderType.create("end_gateway", 1536, false, false,
             END_GATEWAY_PIPELINE,
-            RenderLayer.MultiPhaseParameters.builder()
-                    .texture(Textures.create().add(EndPortalBlockEntityRenderer.SKY_TEXTURE, false)
-                            .add(EndPortalBlockEntityRenderer.PORTAL_TEXTURE, false).build())
-                    .build(false));
+            RenderType.CompositeState.builder()
+                    .setTextureState(MultiTextureStateShard.builder().add(TheEndPortalRenderer.END_SKY_LOCATION, false)
+                            .add(TheEndPortalRenderer.END_PORTAL_LOCATION, false).build())
+                    .createCompositeState(false));
     *///?} else if >=1.21.5 {
-    /*public static final RenderLayer END_GATEWAY = RenderLayer.of("end_gateway", 1536, false, false,
+    /*public static final RenderType END_GATEWAY = RenderType.create("end_gateway", 1536, false, false,
             END_GATEWAY_PIPELINE,
-            RenderLayer.MultiPhaseParameters.builder()
-                    .texture(Textures.create().add(EndPortalBlockEntityRenderer.SKY_TEXTURE, false, false)
-                            .add(EndPortalBlockEntityRenderer.PORTAL_TEXTURE, false, false).build())
-                    .build(false));
+            RenderType.CompositeState.builder()
+                    .setTextureState(MultiTextureStateShard.builder().add(TheEndPortalRenderer.END_SKY_LOCATION, false, false)
+                            .add(TheEndPortalRenderer.END_PORTAL_LOCATION, false, false).build())
+                    .createCompositeState(false));
     *///?} else {
-    /*public static final RenderLayer END_GATEWAY = RenderLayer.of(
+    /*public static final RenderType END_GATEWAY = RenderType.create(
             "end_gateway",
-            VertexFormats.POSITION,
-            DrawMode.QUADS,
+            DefaultVertexFormat.POSITION,
+            Mode.QUADS,
             1536,
             false,
             false,
-            RenderLayer.MultiPhaseParameters.builder()
-                    .program(RenderLayer.END_GATEWAY_PROGRAM)
-                    .texture(Textures.create()
-                            .add(EndPortalBlockEntityRenderer.SKY_TEXTURE, false, false)
-                            .add(EndPortalBlockEntityRenderer.PORTAL_TEXTURE, false, false)
+            RenderType.CompositeState.builder()
+                    .setShaderState(RenderType.RENDERTYPE_END_GATEWAY_SHADER)
+                    .setTextureState(MultiTextureStateShard.builder()
+                            .add(TheEndPortalRenderer.END_SKY_LOCATION, false, false)
+                            .add(TheEndPortalRenderer.END_PORTAL_LOCATION, false, false)
                             .build())
-                    .cull(RenderPhase.DISABLE_CULLING)
-                    .build(false));
+                    .setCullState(RenderStateShard.NO_CULL)
+                    .createCompositeState(false));
     *///?}
 
-    public static RenderLayer getRenderLayer(IdentifierRef texture) {
+    public static RenderType getRenderLayer(IdentifierRef texture) {
         String path = texture.toString();
         if (path.endsWith(".gif")) {
             return entityAlpha((Identifier) (Object) GifUtils.get(texture));
@@ -84,10 +93,32 @@ public class ShaderUtils {
         }
     }
 
-    private static RenderLayer entityAlpha(Identifier texture) {
-        //? if >=1.21.11 {
-        return RenderLayers.entityAlpha(texture);
+    // Cosmetics are drawn unlit, without the lightmap or the directional shading, as the dragon's
+    // alpha pipeline drew them before 26.1. 26.1 dropped that pipeline, so this is the entity shader
+    // with its lighting and overlay turned off.
+    //? if >=26.1 {
+    /*public static final RenderPipeline UNLIT_CUTOUT_PIPELINE = RenderPipelines.register(
+            RenderPipeline.builder(new RenderPipeline.Snippet[] {
+                    RenderPipelines.ENTITY_EMISSIVE_SNIPPET })
+                    .withLocation(Identifier.fromNamespaceAndPath("saturnclient", "pipeline/unlit_cutout"))
+                    .withShaderDefine("ALPHA_CUTOUT", 0.1f)
+                    .withShaderDefine("NO_CARDINAL_LIGHTING")
+                    .withShaderDefine("NO_OVERLAY")
+                    .withCull(false)
+                    // From 26.3 the snippet leaves the color target to each pipeline.
+                    //? if >=26.3
+                    //.withColorTargetState(ColorTargetState.DEFAULT)
+                    .build());
+    private static final Map<Identifier, RenderType> UNLIT_CUTOUT = new HashMap<>();
+    *///?}
+
+    private static RenderType entityAlpha(Identifier texture) {
+        //? if >=26.1 {
+        /*return UNLIT_CUTOUT.computeIfAbsent(texture, id -> RenderType.create("saturn_unlit_cutout",
+                RenderSetup.builder(UNLIT_CUTOUT_PIPELINE).withTexture("Sampler0", id).createRenderSetup()));
+        *///?} else if >=1.21.11 {
+        return RenderTypes.dragonExplosionAlpha(texture);
         //?} else
-        //return RenderLayer.getEntityAlpha(texture);
+        //return RenderType.dragonExplosionAlpha(texture);
     }
 }

src/main/java/org/saturnclient/impl/features/entity/EntityFeatureImpl.java

@@ -2,11 +2,11 @@ package org.saturnclient.impl.features.entity;
 
 import org.saturnclient.common.feature.EntityFeature;
 
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.entity.Entity;
-import net.minecraft.util.hit.EntityHitResult;
-import net.minecraft.util.hit.HitResult;
-import net.minecraft.entity.LivingEntity;
+import net.minecraft.client.Minecraft;
+import net.minecraft.world.entity.Entity;
+import net.minecraft.world.phys.EntityHitResult;
+import net.minecraft.world.phys.HitResult;
+import net.minecraft.world.entity.LivingEntity;
 
 /**
  * Fabric implementation of {@link EntityFeature}.
@@ -18,15 +18,15 @@ import net.minecraft.entity.LivingEntity;
  */
 public class EntityFeatureImpl implements EntityFeature {
 
-    private final MinecraftClient mc;
+    private final Minecraft mc;
 
-    public EntityFeatureImpl(MinecraftClient mc) {
+    public EntityFeatureImpl(Minecraft mc) {
         this.mc = mc;
     }
 
     @Override
     public boolean isTargetingLivingEntity() {
-        HitResult target = mc.crosshairTarget;
+        HitResult target = mc.hitResult;
         if (target == null || target.getType() != HitResult.Type.ENTITY)
             return false;
         Entity hit = ((EntityHitResult) target).getEntity();

src/main/java/org/saturnclient/impl/features/mixins/entity/CameraMixin.java

@@ -1,6 +1,7 @@
 package org.saturnclient.impl.features.mixins.entity;
 
 import org.saturnclient.impl.features.entity.CameraOverriddenEntity;
+import org.saturnclient.impl.features.render.ZoomFov;
 import org.saturnclient.mod.mods.FreelookMod;
 import org.saturnclient.saturnclient.SaturnClient;
 import org.spongepowered.asm.mixin.Mixin;
@@ -9,14 +10,16 @@ import org.spongepowered.asm.mixin.Unique;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+//? if >=26.1
+//import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
-import net.minecraft.client.network.ClientPlayerEntity;
-import net.minecraft.client.render.Camera;
-import net.minecraft.entity.Entity;
+import net.minecraft.client.player.LocalPlayer;
+import net.minecraft.client.Camera;
+import net.minecraft.world.entity.Entity;
 //? if >=1.21.11 {
-import net.minecraft.world.World;
+import net.minecraft.world.level.Level;
 //?} else
-//import net.minecraft.world.BlockView;
+//import net.minecraft.world.level.BlockGetter;
 
 @Mixin(Camera.class)
 public abstract class CameraMixin {
@@ -26,30 +29,51 @@ public abstract class CameraMixin {
     @Shadow
     protected abstract void setRotation(float yaw, float pitch);
 
-    @Inject(method = "update", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/render/Camera;setRotation(FF)V", ordinal = 1, shift = At.Shift.AFTER))
-    public void lockRotation(
-            //? if >=1.21.11 {
-            World focusedBlock,
-            //?} else
-            //BlockView focusedBlock,
-            Entity cameraEntity,
-            boolean isThirdPerson,
-            boolean isFrontFacing,
-            float tickDelta,
-            CallbackInfo ci) {
-        if (FreelookMod.isFreeLooking() && cameraEntity instanceof ClientPlayerEntity) {
+    // Freelook keeps the camera's rotation after vanilla points it along the entity's view. From 26.1
+    // that happens in alignWithEntity, which takes the camera's own entity.
+    //? if >=26.1 {
+    /*@Shadow
+    public abstract Entity entity();
+
+    @Inject(method = "alignWithEntity", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/Camera;setRotation(FF)V", ordinal = 1, shift = At.Shift.AFTER))
+    public void lockRotation(float tickDelta, CallbackInfo ci) {
+        saturn$lockRotation(entity());
+    }
+
+    // The camera works out the FOV from 26.1 (GameRenderer.getFov before).
+    @Inject(method = "calculateFov", at = @At("RETURN"), cancellable = true)
+    private void onCalculateFov(float tickDelta, CallbackInfoReturnable<Float> cir) {
+        cir.setReturnValue(ZoomFov.apply(cir.getReturnValue()));
+    }
+    *///?} else if >=1.21.11 {
+    @Inject(method = "setup", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/Camera;setRotation(FF)V", ordinal = 1, shift = At.Shift.AFTER))
+    public void lockRotation(Level focusedBlock, Entity cameraEntity, boolean isThirdPerson, boolean isFrontFacing,
+            float tickDelta, CallbackInfo ci) {
+        saturn$lockRotation(cameraEntity);
+    }
+    //?} else {
+    /*@Inject(method = "setup", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/Camera;setRotation(FF)V", ordinal = 1, shift = At.Shift.AFTER))
+    public void lockRotation(BlockGetter focusedBlock, Entity cameraEntity, boolean isThirdPerson, boolean isFrontFacing,
+            float tickDelta, CallbackInfo ci) {
+        saturn$lockRotation(cameraEntity);
+    }
+    *///?}
+
+    @Unique
+    private void saturn$lockRotation(Entity cameraEntity) {
+        if (FreelookMod.isFreeLooking() && cameraEntity instanceof LocalPlayer) {
             CameraOverriddenEntity cameraOverriddenEntity = (CameraOverriddenEntity) cameraEntity;
 
             if (firstTime && SaturnClient.client.player != null) {
-                cameraOverriddenEntity.freelook$setCameraPitch(SaturnClient.client.player.getPitch());
-                cameraOverriddenEntity.freelook$setCameraYaw(SaturnClient.client.player.getYaw());
+                cameraOverriddenEntity.freelook$setCameraPitch(SaturnClient.client.player.getXRot());
+                cameraOverriddenEntity.freelook$setCameraYaw(SaturnClient.client.player.getYRot());
                 firstTime = false;
             }
             this.setRotation(cameraOverriddenEntity.freelook$getCameraYaw(),
                     cameraOverriddenEntity.freelook$getCameraPitch());
 
         }
-        if (!FreelookMod.isFreeLooking() && cameraEntity instanceof ClientPlayerEntity) {
+        if (!FreelookMod.isFreeLooking() && cameraEntity instanceof LocalPlayer) {
             firstTime = true;
         }
     }

src/main/java/org/saturnclient/impl/features/mixins/entity/EntityMixin.java

@@ -8,9 +8,9 @@ import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
-import net.minecraft.client.network.ClientPlayerEntity;
-import net.minecraft.entity.Entity;
-import net.minecraft.util.math.MathHelper;
+import net.minecraft.client.player.LocalPlayer;
+import net.minecraft.world.entity.Entity;
+import net.minecraft.util.Mth;
 
 @Mixin(Entity.class)
 public class EntityMixin implements CameraOverriddenEntity {
@@ -20,15 +20,15 @@ public class EntityMixin implements CameraOverriddenEntity {
     @Unique
     private float cameraYaw;
 
-    @Inject(method = "changeLookDirection", at = @At("HEAD"), cancellable = true)
+    @Inject(method = "turn", at = @At("HEAD"), cancellable = true)
     public void changeCameraLookDirection(double xDelta, double yDelta, CallbackInfo ci) {
         // noinspection ConstantValue// IntelliJ is incorrect here, this code block is
         // reachable
-        if (FreelookMod.isFreeLooking() && (Object) this instanceof ClientPlayerEntity) {
+        if (FreelookMod.isFreeLooking() && (Object) this instanceof LocalPlayer) {
             double pitchDelta = (yDelta * 0.15);
             double yawDelta = (xDelta * 0.15);
 
-            this.cameraPitch = MathHelper.clamp(this.cameraPitch + (float) pitchDelta, -90.0f, 90.0f);
+            this.cameraPitch = Mth.clamp(this.cameraPitch + (float) pitchDelta, -90.0f, 90.0f);
             this.cameraYaw += (float) yawDelta;
 
             ci.cancel();

src/main/java/org/saturnclient/impl/features/mixins/render/BackgroundRendererMixin.java

@@ -1,22 +1,19 @@
 package org.saturnclient.impl.features.mixins.render;
 
 //? if >=1.21.6 {
-import net.minecraft.client.render.fog.FogRenderer;
+import net.minecraft.client.renderer.fog.FogRenderer;
 //?} else
-//import net.minecraft.client.render.BackgroundRenderer;
+//import net.minecraft.client.renderer.FogRenderer;
 
 import org.saturnclient.mod.mods.NoFogMod;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.ModifyVariable;
 
-//? if >=1.21.6 {
 @Mixin(FogRenderer.class)
-//?} else
-//@Mixin(BackgroundRenderer.class)
 public class BackgroundRendererMixin {
     // fog
-    @ModifyVariable(method = "applyFog", at = @At("HEAD"), ordinal = 0, argsOnly = true)
+    @ModifyVariable(method = "setupFog", at = @At("HEAD"), ordinal = 0, argsOnly = true)
     private static float modifyFogStart(float viewDistance) {
         if (NoFogMod.isActive()) {
             return viewDistance * 2.0f;

src/main/java/org/saturnclient/impl/features/mixins/render/GameRendererMixin.java

@@ -1,15 +1,16 @@
 package org.saturnclient.impl.features.mixins.render;
 
 //? if >=1.21.6
-import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.Minecraft;
 //? if >=1.21.6
-import net.minecraft.client.option.GameOptions;
-import net.minecraft.client.render.GameRenderer;
+import net.minecraft.client.Options;
+import net.minecraft.client.renderer.GameRenderer;
 
 //? if >=1.21.6
 import org.saturnclient.impl.ui.SaturnScreenFabric;
-import org.saturnclient.mod.mods.FreelookMod;
-import org.saturnclient.mod.mods.ZoomMod;
+//? if >=1.21.6
+import org.saturnclient.impl.ui.Screens;
+import org.saturnclient.impl.features.render.ZoomFov;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
@@ -18,11 +19,11 @@ import org.spongepowered.asm.mixin.injection.Redirect;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
 /**
- * Overrides the game's field-of-view when {@link ZoomMod} is active.
+ * Overrides the game's field-of-view when {@link org.saturnclient.mod.mods.ZoomMod} is active.
  *
  * The old code checked both {@code Zoom.isZooming} and
  * {@code Zoom.shouldZoom()} separately. The refactored
- * {@link ZoomMod#shouldZoom()} already ORs both conditions
+ * {@link org.saturnclient.mod.mods.ZoomMod#shouldZoom()} already ORs both conditions
  * ({@code enabled.value && isZooming}), so only one check is needed.
  *
  * No {@link org.saturnclient.common.module.ModProvider} is required
@@ -36,28 +37,29 @@ public class GameRendererMixin {
      * After the vanilla FOV has been computed, divide it by the zoom
      * level to produce the narrowed field-of-view.
      */
+    // From 26.1 the camera works out the FOV, so CameraMixin applies the zoom there.
+    //? if <26.1 {
     @Inject(method = "getFov", at = @At("RETURN"), cancellable = true)
     private void onGetFov(CallbackInfoReturnable<Float> cir) {
-        if (ZoomMod.shouldZoom()) {
-            float zoomedFov = cir.getReturnValue() / ZoomMod.getZoomLevel();
-            cir.setReturnValue(zoomedFov);
-        } else if (FreelookMod.shouldZoomOut()) {
-            float zoomedFov = cir.getReturnValue() / FreelookMod.getZoomLevel();
-            cir.setReturnValue(zoomedFov);
-        }
+        cir.setReturnValue(ZoomFov.apply(cir.getReturnValue()));
     }
+    //?}
 
     //? if >=1.21.6 {
     // From 1.21.6 the menu blur's strength is the vanilla setting, read here every frame. While a
     // Saturn screen is open, it's Saturn's background blur instead, faded in with the screen.
+    // From 26.1 the setting is read while extracting the options' render state.
+    //? if >=26.1
+    //@Redirect(method = "extractOptions", at = @At(value = "INVOKE",
+    //? if <26.1
     @Redirect(method = "render", at = @At(value = "INVOKE",
-            target = "Lnet/minecraft/client/option/GameOptions;getMenuBackgroundBlurrinessValue()I"))
-    private int useSaturnBlur(GameOptions options) {
-        if (MinecraftClient.getInstance().currentScreen instanceof SaturnScreenFabric saturnScreen) {
+            target = "Lnet/minecraft/client/Options;getMenuBackgroundBlurriness()I"))
+    private int useSaturnBlur(Options options) {
+        if (Screens.current() instanceof SaturnScreenFabric saturnScreen) {
             return saturnScreen.screen.getBackgroundBlur();
         }
 
-        return options.getMenuBackgroundBlurrinessValue();
+        return options.getMenuBackgroundBlurriness();
     }
     //?}
 }

src/main/java/org/saturnclient/impl/features/mixins/render/LightmapTextureManagerMixin.java

@@ -3,7 +3,10 @@ package org.saturnclient.impl.features.mixins.render;
 // Code approach adapted from Gamma Utils: https://github.com/Sjouwer/gamma-utils
 
 import com.llamalad7.mixinextras.injector.ModifyExpressionValue;
-import net.minecraft.client.render.LightmapTextureManager;
+//? if >=26.1 {
+/*import net.minecraft.client.renderer.LightmapRenderStateExtractor;
+*///?} else
+import net.minecraft.client.renderer.LightTexture;
 
 import org.saturnclient.mod.mods.FullbrightMod;
 import org.spongepowered.asm.mixin.Mixin;
@@ -18,14 +21,21 @@ import org.spongepowered.asm.mixin.injection.At;
  * it is now {@link FullbrightMod}. The injection target and
  * strategy are unchanged.
  */
-@Mixin(LightmapTextureManager.class)
+// From 26.1 the gamma is worked out while extracting the lightmap's render state.
+//? if >=26.1 {
+/*@Mixin(LightmapRenderStateExtractor.class)
+*///?} else
+@Mixin(LightTexture.class)
 public class LightmapTextureManagerMixin {
 
     /**
      * If fullbright is active, substitute the feature's brightness
      * value for whatever vanilla calculated.
      */
-    @ModifyExpressionValue(method = "update", at = @At(value = "INVOKE", target = "Ljava/lang/Math;max(FF)F", ordinal = 0))
+    //? if >=26.1 {
+    /*@ModifyExpressionValue(method = "extract", at = @At(value = "INVOKE", target = "Ljava/lang/Math;max(FF)F", ordinal = 0))
+    *///?} else
+    @ModifyExpressionValue(method = "updateLightTexture", at = @At(value = "INVOKE", target = "Ljava/lang/Math;max(FF)F", ordinal = 0))
     private float modifyGamma(float original) {
         if (FullbrightMod.shouldOverrideBrightness()) {
             return FullbrightMod.getBrightnessValue();

src/main/java/org/saturnclient/impl/features/mixins/render/LivingEntityRenderStateMixin.java

@@ -1,6 +1,6 @@
 package org.saturnclient.impl.features.mixins.render;
 
-import net.minecraft.client.render.entity.state.LivingEntityRenderState;
+import net.minecraft.client.renderer.entity.state.LivingEntityRenderState;
 
 import org.saturnclient.common.feature.EntityFeature;
 import org.saturnclient.impl.features.entity.HealthRenderState;

src/main/java/org/saturnclient/impl/features/mixins/render/LivingEntityRendererMixin.java

@@ -1,12 +1,12 @@
 package org.saturnclient.impl.features.mixins.render;
 
-import net.minecraft.client.render.entity.LivingEntityRenderer;
-import net.minecraft.client.render.entity.state.LivingEntityRenderState;
-import net.minecraft.entity.LivingEntity;
-import net.minecraft.entity.mob.HostileEntity;
-import net.minecraft.entity.passive.PassiveEntity;
-import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.text.Text;
+import net.minecraft.client.renderer.entity.LivingEntityRenderer;
+import net.minecraft.client.renderer.entity.state.LivingEntityRenderState;
+import net.minecraft.world.entity.LivingEntity;
+import net.minecraft.world.entity.monster.Monster;
+import net.minecraft.world.entity.AgeableMob;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.network.chat.Component;
 
 import org.saturnclient.common.feature.EntityFeature;
 import org.saturnclient.impl.features.entity.EntityFeatureImpl;
@@ -29,7 +29,7 @@ import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 @Mixin(LivingEntityRenderer.class)
 public abstract class LivingEntityRendererMixin<T extends LivingEntity, S extends LivingEntityRenderState> {
 
-    @Inject(method = "updateRenderState", at = @At("TAIL"))
+    @Inject(method = "extractRenderState", at = @At("TAIL"))
     private void saturn$captureHealth(T entity, S state, float tickDelta, CallbackInfo ci) {
         if (!(state instanceof HealthRenderState hrs))
             return;
@@ -38,11 +38,11 @@ public abstract class LivingEntityRendererMixin<T extends LivingEntity, S extend
 
         // Classify entity type for the nametag feature's filtering logic
         EntityFeature.EntityType type;
-        if (entity instanceof PlayerEntity)
+        if (entity instanceof Player)
             type = EntityFeature.EntityType.PLAYER;
-        else if (entity instanceof HostileEntity)
+        else if (entity instanceof Monster)
             type = EntityFeature.EntityType.HOSTILE;
-        else if (entity instanceof PassiveEntity)
+        else if (entity instanceof AgeableMob)
             type = EntityFeature.EntityType.PASSIVE;
         else
             type = EntityFeature.EntityType.OTHER;
@@ -51,11 +51,11 @@ public abstract class LivingEntityRendererMixin<T extends LivingEntity, S extend
 
         // Only entities that already show a label get a replacement one, as when this hooked label
         // rendering.
-        if (NametagsMod.shouldReplaceName() && state.displayName != null) {
+        if (NametagsMod.shouldReplaceName() && state.nameTag != null) {
             String replacement = NametagsMod.getNametagString(
-                    new EntityFeatureImpl.RenderStateEntityState(state.displayName.getString(), hrs));
+                    new EntityFeatureImpl.RenderStateEntityState(state.nameTag.getString(), hrs));
             if (replacement != null) {
-                state.displayName = Text.literal(replacement);
+                state.nameTag = Component.literal(replacement);
             }
         }
     }

src/main/java/org/saturnclient/impl/features/mixins/render/RenderMixin.java

@@ -1,12 +1,16 @@
 package org.saturnclient.impl.features.mixins.render;
 
-import net.minecraft.client.font.TextRenderer;
-import net.minecraft.client.gui.DrawContext;
-import net.minecraft.client.gui.hud.InGameHud;
-import net.minecraft.client.render.RenderTickCounter;
+import net.minecraft.client.gui.Font;
+import net.minecraft.client.gui.GuiGraphics;
+//? if >=26.2 {
+/*import net.minecraft.client.gui.Hud;
+*///?} else
+import net.minecraft.client.gui.Gui;
+import net.minecraft.client.DeltaTracker;
 
 import org.saturnclient.impl.ui.RenderScopeImpl;
 import org.saturnclient.impl.ui.SaturnScreenFabric;
+import org.saturnclient.impl.ui.Screens;
 import org.saturnclient.mod.HudMod;
 import org.saturnclient.mod.Mod;
 import org.saturnclient.mod.ModLayout;
@@ -37,18 +41,25 @@ import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
  * {@link SaturnScreenFabric} / {@link HudEditor} pair; that is
  * unchanged infrastructure.
  */
-@Mixin(InGameHud.class)
+// The HUD is drawn by Hud from 26.2 (by Gui before).
+//? if >=26.2 {
+/*@Mixin(Hud.class)
+*///?} else
+@Mixin(Gui.class)
 public class RenderMixin {
 
+    //? if >=26.1 {
+    /*@Inject(method = "extractChat", at = @At("TAIL"))
+    *///?} else
     @Inject(method = "renderChat", at = @At("TAIL"))
-    public void renderMods(DrawContext context, RenderTickCounter tickCounter, CallbackInfo ci) {
-        TextRenderer textRenderer = SaturnClient.client.textRenderer;
+    public void renderMods(GuiGraphics context, DeltaTracker tickCounter, CallbackInfo ci) {
+        Font textRenderer = SaturnClient.client.font;
 
         // Skip rendering while the HUD editor is open so the editor
         // can draw its own preview layout without double-drawing.
         if (textRenderer == null)
             return;
-        if (SaturnClient.client.currentScreen instanceof SaturnScreenFabric f
+        if (Screens.current() instanceof SaturnScreenFabric f
                 && f.screen instanceof HudEditor)
             return;
 

src/main/java/org/saturnclient/impl/features/mixins/world/TpsMixin.java

@@ -1,7 +1,7 @@
 package org.saturnclient.impl.features.mixins.world;
 
-import net.minecraft.client.network.ClientPlayNetworkHandler;
-import net.minecraft.network.packet.s2c.play.WorldTimeUpdateS2CPacket;
+import net.minecraft.client.multiplayer.ClientPacketListener;
+import net.minecraft.network.protocol.game.ClientboundSetTimePacket;
 
 import org.saturnclient.mod.mods.TpsMod;
 import org.spongepowered.asm.mixin.Mixin;
@@ -20,11 +20,11 @@ import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
  * The only change from the original is renaming the import from
  * {@code feature.features.Tps} to {@link TpsMod}.
  */
-@Mixin(ClientPlayNetworkHandler.class)
+@Mixin(ClientPacketListener.class)
 public class TpsMixin {
 
-    @Inject(method = "onWorldTimeUpdate", at = @At("HEAD"))
-    private void onWorldTimeUpdate(WorldTimeUpdateS2CPacket packet, CallbackInfo ci) {
-        TpsMod.onTimePacket(packet.time());
+    @Inject(method = "handleSetTime", at = @At("HEAD"))
+    private void onWorldTimeUpdate(ClientboundSetTimePacket packet, CallbackInfo ci) {
+        TpsMod.onTimePacket(packet.gameTime());
     }
 }

src/main/java/org/saturnclient/impl/features/network/NetworkFeatureImpl.java

@@ -2,8 +2,8 @@ package org.saturnclient.impl.features.network;
 
 import org.saturnclient.common.feature.NetworkFeature;
 
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.client.network.PlayerListEntry;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.multiplayer.PlayerInfo;
 
 /**
  * Fabric implementation of {@link NetworkFeature}.
@@ -14,23 +14,23 @@ import net.minecraft.client.network.PlayerListEntry;
  */
 public class NetworkFeatureImpl implements NetworkFeature {
 
-    private final MinecraftClient mc;
+    private final Minecraft mc;
 
-    public NetworkFeatureImpl(MinecraftClient mc) {
+    public NetworkFeatureImpl(Minecraft mc) {
         this.mc = mc;
     }
 
     @Override
     public boolean hasNetwork() {
-        return mc.getNetworkHandler() != null;
+        return mc.getConnection() != null;
     }
 
     @Override
     public int getPing() {
-        if (mc.player == null || mc.getNetworkHandler() == null)
+        if (mc.player == null || mc.getConnection() == null)
             return -1;
 
-        PlayerListEntry entry = mc.getNetworkHandler().getPlayerListEntry(mc.player.getUuid());
+        PlayerInfo entry = mc.getConnection().getPlayerInfo(mc.player.getUUID());
 
         return entry != null ? entry.getLatency() : -1;
     }

src/main/java/org/saturnclient/impl/features/player/PlayerFeatureImpl.java

@@ -1,13 +1,13 @@
 package org.saturnclient.impl.features.player;
 
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.client.network.ClientPlayerEntity;
-import net.minecraft.entity.EquipmentSlot;
-import net.minecraft.entity.effect.StatusEffectInstance;
-import net.minecraft.item.ItemStack;
-import net.minecraft.item.Items;
-import net.minecraft.registry.Registries;
-import net.minecraft.util.Identifier;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.player.LocalPlayer;
+import net.minecraft.world.entity.EquipmentSlot;
+import net.minecraft.world.effect.MobEffectInstance;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.item.Items;
+import net.minecraft.core.registries.BuiltInRegistries;
+import net.minecraft.resources.Identifier;
 
 import org.saturnclient.common.feature.PlayerFeature;
 import org.saturnclient.common.ref.game.EffectRef;
@@ -29,9 +29,9 @@ import java.util.List;
  */
 public class PlayerFeatureImpl implements PlayerFeature {
 
-    private final MinecraftClient mc;
+    private final Minecraft mc;
 
-    public PlayerFeatureImpl(MinecraftClient mc) {
+    public PlayerFeatureImpl(Minecraft mc) {
         this.mc = mc;
     }
 
@@ -40,7 +40,7 @@ public class PlayerFeatureImpl implements PlayerFeature {
     // ---------------------------------------------------------------
 
     /** Returns the local player, or {@code null} if one is not loaded. */
-    private ClientPlayerEntity player() {
+    private LocalPlayer player() {
         return mc.player;
     }
 
@@ -78,42 +78,42 @@ public class PlayerFeatureImpl implements PlayerFeature {
 
     @Override
     public boolean isForwardPressed() {
-        return mc.options.forwardKey.isPressed();
+        return mc.options.keyUp.isDown();
     }
 
     @Override
     public boolean isBackPressed() {
-        return mc.options.backKey.isPressed();
+        return mc.options.keyDown.isDown();
     }
 
     @Override
     public boolean isLeftPressed() {
-        return mc.options.leftKey.isPressed();
+        return mc.options.keyLeft.isDown();
     }
 
     @Override
     public boolean isRightPressed() {
-        return mc.options.rightKey.isPressed();
+        return mc.options.keyRight.isDown();
     }
 
     @Override
     public boolean isJumpPressed() {
-        return mc.options.jumpKey.isPressed();
+        return mc.options.keyJump.isDown();
     }
 
     @Override
     public boolean isAttackPressed() {
-        return mc.options.attackKey.isPressed();
+        return mc.options.keyAttack.isDown();
     }
 
     @Override
     public boolean isUsePressed() {
-        return mc.options.useKey.isPressed();
+        return mc.options.keyUse.isDown();
     }
 
     @Override
     public boolean isSneaking() {
-        return hasPlayer() && player().isSneaking();
+        return hasPlayer() && player().isShiftKeyDown();
     }
 
     @Override
@@ -128,7 +128,7 @@ public class PlayerFeatureImpl implements PlayerFeature {
 
     @Override
     public boolean isOnGround() {
-        return hasPlayer() && player().isOnGround();
+        return hasPlayer() && player().onGround();
     }
 
     @Override
@@ -145,7 +145,7 @@ public class PlayerFeatureImpl implements PlayerFeature {
     public Velocity getVelocity() {
         if (!hasPlayer())
             return Velocity.ZERO;
-        var v = player().getVelocity();
+        var v = player().getDeltaMovement();
         return new Velocity(v.x, v.y, v.z);
     }
 
@@ -164,13 +164,13 @@ public class PlayerFeatureImpl implements PlayerFeature {
 
     @Override
     public ItemStackRef getMainHand() {
-        return wrap(hasPlayer() ? player().getMainHandStack() : ItemStack.EMPTY);
+        return wrap(hasPlayer() ? player().getMainHandItem() : ItemStack.EMPTY);
     }
 
     @Override
     public ItemStackRef getHelmet() {
         //? if >=1.21.5 {
-        return wrap(hasPlayer() ? player().getEquippedStack(EquipmentSlot.HEAD) : ItemStack.EMPTY);
+        return wrap(hasPlayer() ? player().getItemBySlot(EquipmentSlot.HEAD) : ItemStack.EMPTY);
         //?} else
         //return wrap(hasPlayer() ? player().getInventory().armor.get(3) : ItemStack.EMPTY);
     }
@@ -178,7 +178,7 @@ public class PlayerFeatureImpl implements PlayerFeature {
     @Override
     public ItemStackRef getChestplate() {
         //? if >=1.21.5 {
-        return wrap(hasPlayer() ? player().getEquippedStack(EquipmentSlot.CHEST) : ItemStack.EMPTY);
+        return wrap(hasPlayer() ? player().getItemBySlot(EquipmentSlot.CHEST) : ItemStack.EMPTY);
         //?} else
         //return wrap(hasPlayer() ? player().getInventory().armor.get(2) : ItemStack.EMPTY);
     }
@@ -186,7 +186,7 @@ public class PlayerFeatureImpl implements PlayerFeature {
     @Override
     public ItemStackRef getLeggings() {
         //? if >=1.21.5 {
-        return wrap(hasPlayer() ? player().getEquippedStack(EquipmentSlot.LEGS) : ItemStack.EMPTY);
+        return wrap(hasPlayer() ? player().getItemBySlot(EquipmentSlot.LEGS) : ItemStack.EMPTY);
         //?} else
         //return wrap(hasPlayer() ? player().getInventory().armor.get(1) : ItemStack.EMPTY);
     }
@@ -194,7 +194,7 @@ public class PlayerFeatureImpl implements PlayerFeature {
     @Override
     public ItemStackRef getBoots() {
         //? if >=1.21.5 {
-        return wrap(hasPlayer() ? player().getEquippedStack(EquipmentSlot.FEET) : ItemStack.EMPTY);
+        return wrap(hasPlayer() ? player().getItemBySlot(EquipmentSlot.FEET) : ItemStack.EMPTY);
         //?} else
         //return wrap(hasPlayer() ? player().getInventory().armor.get(0) : ItemStack.EMPTY);
     }
@@ -237,9 +237,9 @@ public class PlayerFeatureImpl implements PlayerFeature {
         if (!hasPlayer())
             return Collections.emptyList();
 
-        var effects = player().getActiveStatusEffects().values();
+        var effects = player().getActiveEffectsMap().values();
         List<EffectRef> result = new ArrayList<>(effects.size());
-        for (StatusEffectInstance instance : effects) {
+        for (MobEffectInstance instance : effects) {
             result.add((EffectRef) instance);
         }
         return result;
@@ -248,12 +248,12 @@ public class PlayerFeatureImpl implements PlayerFeature {
     @Override
     public List<? extends EffectRef> getDummyEffects() {
         return List.of(
-                (EffectRef) new StatusEffectInstance(
-                        Registries.STATUS_EFFECT.getEntry(Identifier.ofVanilla("speed")).get(), 12000, 2),
-                (EffectRef) new StatusEffectInstance(
-                        Registries.STATUS_EFFECT.getEntry(Identifier.ofVanilla("strength")).get(), 12000, 2),
-                (EffectRef) new StatusEffectInstance(
-                        Registries.STATUS_EFFECT.getEntry(Identifier.ofVanilla("fire_resistance")).get(), 12000, 2));
+                (EffectRef) new MobEffectInstance(
+                        BuiltInRegistries.MOB_EFFECT.get(Identifier.withDefaultNamespace("speed")).get(), 12000, 2),
+                (EffectRef) new MobEffectInstance(
+                        BuiltInRegistries.MOB_EFFECT.get(Identifier.withDefaultNamespace("strength")).get(), 12000, 2),
+                (EffectRef) new MobEffectInstance(
+                        BuiltInRegistries.MOB_EFFECT.get(Identifier.withDefaultNamespace("fire_resistance")).get(), 12000, 2));
     }
 
     // ---------------------------------------------------------------

src/main/java/org/saturnclient/impl/features/render/RenderFeatureImpl.java

@@ -2,8 +2,8 @@ package org.saturnclient.impl.features.render;
 
 import org.saturnclient.common.feature.RenderFeature;
 
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.client.option.Perspective;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.CameraType;
 
 /**
  * Fabric implementation of {@link RenderFeature}.
@@ -14,9 +14,9 @@ import net.minecraft.client.option.Perspective;
  */
 public class RenderFeatureImpl implements RenderFeature {
 
-    private final MinecraftClient mc;
+    private final Minecraft mc;
 
-    public RenderFeatureImpl(MinecraftClient mc) {
+    public RenderFeatureImpl(Minecraft mc) {
         this.mc = mc;
     }
 
@@ -26,12 +26,12 @@ public class RenderFeatureImpl implements RenderFeature {
 
     @Override
     public int getScaledWindowWidth() {
-        return mc.getWindow().getScaledWidth();
+        return mc.getWindow().getGuiScaledWidth();
     }
 
     @Override
     public int getScaledWindowHeight() {
-        return mc.getWindow().getScaledHeight();
+        return mc.getWindow().getGuiScaledHeight();
     }
 
     // ---------------------------------------------------------------
@@ -40,7 +40,7 @@ public class RenderFeatureImpl implements RenderFeature {
 
     @Override
     public int getFps() {
-        return mc.getCurrentFps();
+        return mc.getFps();
     }
 
     // ---------------------------------------------------------------
@@ -49,16 +49,16 @@ public class RenderFeatureImpl implements RenderFeature {
 
     @Override
     public boolean isFirstPerson() {
-        return mc.options.getPerspective() == Perspective.FIRST_PERSON;
+        return mc.options.getCameraType() == CameraType.FIRST_PERSON;
     }
 
     @Override
     public void setFirstPerson() {
-        mc.options.setPerspective(Perspective.FIRST_PERSON);
+        mc.options.setCameraType(CameraType.FIRST_PERSON);
     }
 
     @Override
     public void setThirdPersonBack() {
-        mc.options.setPerspective(Perspective.THIRD_PERSON_BACK);
+        mc.options.setCameraType(CameraType.THIRD_PERSON_BACK);
     }
 }

src/main/java/org/saturnclient/impl/features/render/ZoomFov.java

@@ -0,0 +1,19 @@
+package org.saturnclient.impl.features.render;
+
+import org.saturnclient.mod.mods.FreelookMod;
+import org.saturnclient.mod.mods.ZoomMod;
+
+/** The zoom mods' change to the field of view, applied where each version computes it. */
+public final class ZoomFov {
+    private ZoomFov() {
+    }
+
+    public static float apply(float fov) {
+        if (ZoomMod.shouldZoom()) {
+            return fov / ZoomMod.getZoomLevel();
+        } else if (FreelookMod.shouldZoomOut()) {
+            return fov / FreelookMod.getZoomLevel();
+        }
+        return fov;
+    }
+}

src/main/java/org/saturnclient/impl/features/world/WorldFeatureImpl.java

@@ -2,7 +2,7 @@ package org.saturnclient.impl.features.world;
 
 import org.saturnclient.common.feature.WorldFeature;
 
-import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.Minecraft;
 
 /**
  * Fabric implementation of {@link WorldFeature}.
@@ -12,15 +12,15 @@ import net.minecraft.client.MinecraftClient;
  */
 public class WorldFeatureImpl implements WorldFeature {
 
-    private final MinecraftClient mc;
+    private final Minecraft mc;
 
-    public WorldFeatureImpl(MinecraftClient mc) {
+    public WorldFeatureImpl(Minecraft mc) {
         this.mc = mc;
     }
 
     @Override
     public boolean hasWorld() {
-        return mc.world != null;
+        return mc.level != null;
     }
 
     /**
@@ -32,6 +32,6 @@ public class WorldFeatureImpl implements WorldFeature {
     @Override
     public long getWorldAge() {
         // World.getTime() was a shortcut for this, and 1.21.11 removed it.
-        return hasWorld() ? mc.world.getLevelProperties().getTime() : 0L;
+        return hasWorld() ? mc.level.getLevelData().getGameTime() : 0L;
     }
 }

src/main/java/org/saturnclient/impl/mixins/IdentifierMixin.java

@@ -4,7 +4,7 @@ import org.saturnclient.common.ref.asset.IdentifierRef;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
 
-import net.minecraft.util.Identifier;
+import net.minecraft.resources.Identifier;
 
 @Mixin(Identifier.class)
 public abstract class IdentifierMixin implements IdentifierRef {

src/main/java/org/saturnclient/impl/mixins/ItemStackMixin.java

@@ -4,7 +4,7 @@ import org.saturnclient.common.ref.game.ItemStackRef;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
 
-import net.minecraft.item.ItemStack;
+import net.minecraft.world.item.ItemStack;
 
 @Mixin(ItemStack.class)
 public abstract class ItemStackMixin implements ItemStackRef {
@@ -15,5 +15,21 @@ public abstract class ItemStackMixin implements ItemStackRef {
     public abstract int getMaxDamage();
 
     @Shadow
-    public abstract int getDamage();
+    public abstract int getDamageValue();
+
+    // ItemStackRef's methods delegate to ItemStack's, whose names production renames.
+    @Override
+    public boolean isEmptyStack() {
+        return isEmpty();
+    }
+
+    @Override
+    public int getMaxItemDamage() {
+        return getMaxDamage();
+    }
+
+    @Override
+    public int getItemDamage() {
+        return getDamageValue();
+    }
 }

src/main/java/org/saturnclient/impl/mixins/MatrixStackMixin.java

@@ -1,6 +1,6 @@
 package org.saturnclient.impl.mixins;
 
-import net.minecraft.client.util.math.MatrixStack;
+import com.mojang.blaze3d.vertex.PoseStack;
 import org.spongepowered.asm.mixin.Mixin;
 //? if <1.21.6 {
 /*import org.saturnclient.common.ref.render.MatrixStackRef;
@@ -9,7 +9,7 @@ import org.joml.Quaternionfc;
 //? if <1.21.5
 //import org.joml.Quaternionf;
 import org.spongepowered.asm.mixin.Shadow;
-import net.minecraft.util.math.RotationAxis;
+import com.mojang.math.Axis;
 *///?}
 
 /**
@@ -17,14 +17,14 @@ import net.minecraft.util.math.RotationAxis;
  * Matrix3x2fStack (Matrix3x2fStackRef) instead, so this mixin is empty but stays registered, keeping
  * impl.mixins.json the same for every version.
  */
-@Mixin(MatrixStack.class)
+@Mixin(PoseStack.class)
 //? if <1.21.6 {
 /*public abstract class MatrixStackMixin implements MatrixStackRef {
     @Shadow
-    public abstract void push();
+    public abstract void pushPose();
 
     @Shadow
-    public abstract void pop();
+    public abstract void popPose();
 
     @Shadow
     public abstract void translate(float x, float y, float z);
@@ -34,15 +34,26 @@ import net.minecraft.util.math.RotationAxis;
 
     @Shadow
     //? if >=1.21.5
-    public abstract void multiply(Quaternionfc quaternion);
+    public abstract void mulPose(Quaternionfc quaternion);
     //? if <1.21.5
-    //public abstract void multiply(Quaternionf quaternion);
+    //public abstract void mulPose(Quaternionf quaternion);
 
     @Shadow
     //? if >=1.21.5
-    public abstract void multiply(Quaternionfc quaternion, float originX, float originY, float originZ);
+    public abstract void rotateAround(Quaternionfc quaternion, float originX, float originY, float originZ);
     //? if <1.21.5
-    //public abstract void multiply(Quaternionf quaternion, float originX, float originY, float originZ);
+    //public abstract void rotateAround(Quaternionf quaternion, float originX, float originY, float originZ);
+
+    // MatrixStackRef's methods delegate to PoseStack's, whose names production renames.
+    @Override
+    public void push() {
+        pushPose();
+    }
+
+    @Override
+    public void pop() {
+        popPose();
+    }
 
     @Override
     public void translate(float x, float y) {
@@ -56,12 +67,12 @@ import net.minecraft.util.math.RotationAxis;
 
     @Override
     public void rotate(float angle, float originX, float originY, float originZ) {
-        multiply(RotationAxis.NEGATIVE_Z.rotationDegrees(angle), originX, originY, originZ);
+        rotateAround(Axis.ZN.rotationDegrees(angle), originX, originY, originZ);
     }
 
     @Override
     public void rotate(float angle) {
-        multiply(RotationAxis.NEGATIVE_Z.rotationDegrees(angle));
+        mulPose(Axis.ZN.rotationDegrees(angle));
     }
 }
 *///?} else

src/main/java/org/saturnclient/impl/mixins/MinecraftClientMixin.java

@@ -4,61 +4,61 @@ import java.io.File;
 import java.io.InputStream;
 import java.util.UUID;
 
-import org.jetbrains.annotations.Nullable;
 import org.saturnclient.common.ref.asset.IdentifierRef;
 import org.saturnclient.common.ref.game.MinecraftClientRef;
 import org.saturnclient.common.ref.render.WindowRef;
 import org.saturnclient.impl.ui.SaturnScreenFabric;
+import org.saturnclient.impl.ui.Screens;
 import org.saturnclient.ui.SaturnScreen;
 import org.saturnclient.ui.screens.TitleMenu;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
 
 import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents;
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.client.gui.screen.Screen;
-import net.minecraft.client.gui.screen.multiplayer.MultiplayerScreen;
-import net.minecraft.client.gui.screen.option.OptionsScreen;
-import net.minecraft.client.gui.screen.world.SelectWorldScreen;
-import net.minecraft.client.option.GameOptions;
-import net.minecraft.client.session.Session;
-import net.minecraft.client.util.Window;
-import net.minecraft.resource.ReloadableResourceManagerImpl;
-import net.minecraft.util.Identifier;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.screens.multiplayer.JoinMultiplayerScreen;
+import net.minecraft.client.gui.screens.options.OptionsScreen;
+import net.minecraft.client.gui.screens.worldselection.SelectWorldScreen;
+import net.minecraft.client.Options;
+import net.minecraft.client.User;
+import com.mojang.blaze3d.platform.Window;
+import net.minecraft.server.packs.resources.ReloadableResourceManager;
+import net.minecraft.resources.Identifier;
 
-@Mixin(MinecraftClient.class)
+@Mixin(Minecraft.class)
 public abstract class MinecraftClientMixin implements MinecraftClientRef {
     @Shadow
-    public File runDirectory;
+    public File gameDirectory;
 
     @Shadow
     private Window window;
 
     @Shadow
-    private ReloadableResourceManagerImpl resourceManager;
+    private ReloadableResourceManager resourceManager;
 
     @Shadow
-    public GameOptions options;
+    public Options options;
 
     @Shadow
-    private Session session;
+    private User user;
 
     @Shadow
-    public abstract void setScreen(@Nullable Screen screen);
+    public abstract void stop();
 
-    @Shadow
     @Override
-    public abstract void scheduleStop();
+    public void scheduleStop() {
+        stop();
+    }
 
     @Override
     public File getRunDirectory() {
-        return runDirectory;
+        return gameDirectory;
     }
 
     @Override
     public InputStream getResource(IdentifierRef identifier) {
         try {
-            return resourceManager.getResource((Identifier) (Object) identifier).get().getInputStream();
+            return resourceManager.getResource((Identifier) (Object) identifier).get().open();
         } catch (Exception e) {
             return null;
         }
@@ -71,7 +71,7 @@ public abstract class MinecraftClientMixin implements MinecraftClientRef {
 
     @Override
     public void setScreen(SaturnScreen screen) {
-        this.setScreen(new SaturnScreenFabric(screen));
+        Screens.set(new SaturnScreenFabric(screen));
     }
 
     @Override
@@ -80,42 +80,48 @@ public abstract class MinecraftClientMixin implements MinecraftClientRef {
 
         switch (screen) {
             case SelectWorld:
-                this.setScreen(new SelectWorldScreen(exitTarget));
+                Screens.set(new SelectWorldScreen(exitTarget));
                 break;
 
             case Multiplayer:
-                this.setScreen(new MultiplayerScreen(exitTarget));
+                Screens.set(new JoinMultiplayerScreen(exitTarget));
                 break;
 
             case Options:
-                this.setScreen(new OptionsScreen(exitTarget, this.options));
+                // Only 26.1 and 26.2 take whether a world is open.
+                //? if >=26.3 {
+                /*Screens.set(new OptionsScreen(exitTarget, this.options));
+                *///?} else if >=26.1 {
+                /*Screens.set(new OptionsScreen(exitTarget, this.options, ((Minecraft) (Object) this).level != null));
+                *///?} else
+                Screens.set(new OptionsScreen(exitTarget, this.options));
                 break;
         }
     }
 
     @Override
     public String getAccessToken() {
-        if (session == null) {
+        if (user == null) {
             return null;
         }
 
-        return this.session.getAccessToken();
+        return this.user.getAccessToken();
     }
 
     @Override
     public UUID getUuid() {
-        if (session == null) {
+        if (user == null) {
             return null;
         }
-        return this.session.getUuidOrNull();
+        return this.user.getProfileId();
     }
 
     @Override
     public String getUsername() {
-        if (session == null) {
+        if (user == null) {
             return null;
         }
-        return this.session.getUsername();
+        return this.user.getName();
     }
 
     @Override
@@ -131,13 +137,13 @@ public abstract class MinecraftClientMixin implements MinecraftClientRef {
     @Override
     @SuppressWarnings("resource")
     public String getPlayerListEntry(UUID uuid) {
-        var client = (MinecraftClient) (Object) this;
-        var handler = client.getNetworkHandler();
+        var client = (Minecraft) (Object) this;
+        var handler = client.getConnection();
 
         if (handler == null)
             return null;
 
-        var entry = handler.getPlayerListEntry(uuid);
+        var entry = handler.getPlayerInfo(uuid);
         if (entry == null)
             return null;
 
@@ -150,13 +156,13 @@ public abstract class MinecraftClientMixin implements MinecraftClientRef {
     @Override
     @SuppressWarnings("resource")
     public UUID getPlayerListEntryUUID(String name) {
-        var client = (MinecraftClient) (Object) this;
-        var handler = client.getNetworkHandler();
+        var client = (Minecraft) (Object) this;
+        var handler = client.getConnection();
 
         if (handler == null)
             return null;
 
-        var entry = handler.getPlayerListEntry(name);
+        var entry = handler.getPlayerInfo(name);
         if (entry == null)
             return null;
 

src/main/java/org/saturnclient/impl/mixins/SpriteMixin.java

@@ -1,9 +1,9 @@
 package org.saturnclient.impl.mixins;
 
-import net.minecraft.client.texture.Sprite;
+import net.minecraft.client.renderer.texture.TextureAtlasSprite;
 import org.saturnclient.common.ref.asset.SpriteRef;
 import org.spongepowered.asm.mixin.Mixin;
 
-@Mixin(Sprite.class)
+@Mixin(TextureAtlasSprite.class)
 public abstract class SpriteMixin implements SpriteRef {
 }

src/main/java/org/saturnclient/impl/mixins/StatusEffectMixin.java

@@ -8,26 +8,40 @@ import org.saturnclient.common.ref.game.EffectRef;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
 
-import net.minecraft.client.gui.hud.InGameHud;
-import net.minecraft.entity.effect.StatusEffect;
-import net.minecraft.entity.effect.StatusEffectInstance;
-import net.minecraft.registry.entry.RegistryEntry;
-import net.minecraft.util.Identifier;
+//? if >=26.2 {
+/*import net.minecraft.client.gui.Hud;
+*///?} else
+import net.minecraft.client.gui.Gui;
+import net.minecraft.world.effect.MobEffect;
+import net.minecraft.world.effect.MobEffectInstance;
+import net.minecraft.core.Holder;
+import net.minecraft.resources.Identifier;
 
-@Mixin(StatusEffectInstance.class)
+@Mixin(MobEffectInstance.class)
 public abstract class StatusEffectMixin implements EffectRef {
 
     @Shadow
-    public abstract boolean shouldShowIcon();
+    public abstract boolean showIcon();
 
     @Shadow
-    public abstract boolean isInfinite();
+    public abstract boolean isInfiniteDuration();
 
     @Shadow
     public abstract int getDuration();
 
     @Shadow
-    public abstract RegistryEntry<StatusEffect> getEffectType();
+    public abstract Holder<MobEffect> getEffect();
+
+    // EffectRef's methods delegate to MobEffectInstance's, whose names production renames.
+    @Override
+    public boolean shouldShowIcon() {
+        return showIcon();
+    }
+
+    @Override
+    public boolean isInfinite() {
+        return isInfiniteDuration();
+    }
 
     @Override
     public SpriteRef getIcon() {
@@ -35,16 +49,19 @@ public abstract class StatusEffectMixin implements EffectRef {
         //? if >=1.21.9 {
         return null;
         //?} else if >=1.21.6 {
-        //return (SpriteRef) SaturnClient.client.getGuiAtlasManager().getSprite((InGameHud.getEffectTexture(getEffectType())));
+        //return (SpriteRef) SaturnClient.client.getGuiSprites().getSprite((Gui.getMobEffectSprite(getEffect())));
         //?} else
-        //return (SpriteRef) SaturnClient.client.getStatusEffectSpriteManager().getSprite(getEffectType());
+        //return (SpriteRef) SaturnClient.client.getMobEffectTextures().get(getEffect());
     }
 
     // Before 1.21.6 there's no InGameHud.getEffectTexture; getIcon's sprite is used there instead.
     //? if >=1.21.6 {
     @Override
     public IdentifierRef getIconId() {
-        Identifier id = InGameHud.getEffectTexture(getEffectType());
+        //? if >=26.2 {
+        /*Identifier id = Hud.getMobEffectSprite(getEffect());
+        *///?} else
+        Identifier id = Gui.getMobEffectSprite(getEffect());
 
         return IdentifierRef.of(id.getNamespace(), "textures/" + id.getPath() + ".png");
     }

src/main/java/org/saturnclient/impl/mixins/TextMixin.java

@@ -5,25 +5,25 @@ import org.saturnclient.common.ref.render.TextRef;
 import org.saturnclient.saturnclient.SaturnClient;
 import org.spongepowered.asm.mixin.Mixin;
 
-import net.minecraft.text.Style;
-import net.minecraft.text.Text;
+import net.minecraft.network.chat.Style;
+import net.minecraft.network.chat.Component;
 //? if >=1.21.9
-import net.minecraft.text.StyleSpriteSource.Font;
-import net.minecraft.util.Identifier;
+import net.minecraft.network.chat.FontDescription.Resource;
+import net.minecraft.resources.Identifier;
 
-@Mixin(Text.class)
+@Mixin(Component.class)
 public interface TextMixin extends TextRef {
 
     @Override
     public default TextRef withFont(IdentifierRef font) {
         //? if >=1.21.9 {
-        return (TextRef) (Text) (((Text) this).copy().setStyle(Style.EMPTY.withFont(new Font((Identifier) (Object) font))));
+        return (TextRef) (Component) (((Component) this).copy().setStyle(Style.EMPTY.withFont(new Resource((Identifier) (Object) font))));
         //?} else
-        //return (TextRef) (((Text) this).copy().setStyle(Style.EMPTY.withFont((Identifier) (Object) font)));
+        //return (TextRef) (((Component) this).copy().setStyle(Style.EMPTY.withFont((Identifier) (Object) font)));
     }
 
     @Override
     public default int getWidth() {
-        return SaturnClient.client.textRenderer.getWidth((Text) this);
+        return SaturnClient.client.font.width((Component) this);
     }
 }

src/main/java/org/saturnclient/impl/mixins/WindowMixin.java

@@ -4,19 +4,41 @@ import org.saturnclient.common.ref.render.WindowRef;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
 
-import net.minecraft.client.util.Window;
+import com.mojang.blaze3d.platform.Window;
 
 @Mixin(Window.class)
 public abstract class WindowMixin implements WindowRef {
+    @Shadow
+    public abstract int getScreenWidth();
+
+    @Shadow
+    public abstract int getScreenHeight();
+
+    // The framebuffer's size
     @Shadow
     public abstract int getWidth();
 
     @Shadow
     public abstract int getHeight();
 
-    @Shadow
-    public abstract int getFramebufferWidth();
+    // WindowRef's methods delegate to Window's, whose names production renames.
+    @Override
+    public int getWindowWidth() {
+        return getScreenWidth();
+    }
 
-    @Shadow
-    public abstract int getFramebufferHeight();
+    @Override
+    public int getWindowHeight() {
+        return getScreenHeight();
+    }
+
+    @Override
+    public int getFramebufferWidth() {
+        return getWidth();
+    }
+
+    @Override
+    public int getFramebufferHeight() {
+        return getHeight();
+    }
 }

src/main/java/org/saturnclient/impl/provider/FeatureProviderFabric.java

@@ -1,6 +1,6 @@
 package org.saturnclient.impl.provider;
 
-import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.Minecraft;
 
 import org.saturnclient.common.feature.*;
 import org.saturnclient.common.provider.FeatureProvider;
@@ -33,7 +33,7 @@ public class FeatureProviderFabric implements FeatureProvider {
     private final RenderFeature render;
     private final NetworkFeature network;
 
-    public FeatureProviderFabric(MinecraftClient mc) {
+    public FeatureProviderFabric(Minecraft mc) {
         this.player = new PlayerFeatureImpl(mc);
         this.world = new WorldFeatureImpl(mc);
         this.entity = new EntityFeatureImpl(mc);

src/main/java/org/saturnclient/impl/provider/GLFWProviderImpl.java

@@ -1,18 +1,36 @@
 package org.saturnclient.impl.provider;
 
+// 26.3 uses SDL, not GLFW; Keys converts Saturn's GLFW key codes to its own.
+//? if >=26.3 {
+/*import com.mojang.blaze3d.platform.InputConstants;
+*///?} else
 import org.lwjgl.glfw.GLFW;
 import org.saturnclient.common.provider.GLFWProvider;
+import org.saturnclient.impl.ui.Screens;
 import org.saturnclient.saturnclient.SaturnClient;
 
 public class GLFWProviderImpl implements GLFWProvider {
     @Override
     public boolean isKeyPressed(int key) {
-        return GLFW.glfwGetKey(SaturnClient.client.getWindow().getHandle(), key) == GLFW.GLFW_PRESS
-                && SaturnClient.client.currentScreen == null;
+        //? if >=26.3 {
+        /*int gameKey = Keys.toGame(key);
+        return gameKey >= 0 && InputConstants.isKeyDown(gameKey) && Screens.current() == null;
+        *///?} else {
+        //? if >=1.21.9 {
+        long window = SaturnClient.client.getWindow().handle();
+        //?} else
+        //long window = SaturnClient.client.getWindow().getWindow();
+        return GLFW.glfwGetKey(window, key) == GLFW.GLFW_PRESS
+                && Screens.current() == null;
+        //?}
     }
 
     @Override
     public String getKeyName(int key) {
+        //? if >=26.3 {
+        /*int gameKey = Keys.toGame(key);
+        return gameKey < 0 ? null : InputConstants.Type.KEYBOARD.getOrCreate(gameKey).getDisplayName().getString();
+        *///?} else
         return GLFW.glfwGetKeyName(key, GLFW.glfwGetKeyScancode(key));
     }
 }

src/main/java/org/saturnclient/impl/provider/Keys.java

@@ -0,0 +1,189 @@
+package org.saturnclient.impl.provider;
+
+//? if >=26.3 {
+/*import com.mojang.blaze3d.platform.InputConstants;
+import it.unimi.dsi.fastutil.ints.Int2IntOpenHashMap;
+import org.saturnclient.common.provider.GLFWProvider;
+*///?}
+
+/**
+ * Saturn's key codes are GLFW's, which the config's keybinds store. From 26.3 Minecraft uses SDL,
+ * whose keys (scancodes), modifiers and mouse buttons are numbered differently, so these convert
+ * between the two there. Before 26.3 Minecraft's numbers are GLFW's and pass through.
+ */
+public final class Keys {
+    private Keys() {
+    }
+
+    //? if >=26.3 {
+    /*private static final Int2IntOpenHashMap TO_GAME = new Int2IntOpenHashMap();
+    private static final Int2IntOpenHashMap TO_SATURN = new Int2IntOpenHashMap();
+
+    private static void key(int glfw, int game) {
+        TO_GAME.put(glfw, game);
+        TO_SATURN.put(game, glfw);
+    }
+
+    // GLFW's key codes, and the same keys' constants in 26.3
+    static {
+        TO_GAME.defaultReturnValue(-1);
+        TO_SATURN.defaultReturnValue(-1);
+        key(32, InputConstants.KEY_SPACE);
+        key(39, InputConstants.KEY_APOSTROPHE);
+        key(44, InputConstants.KEY_COMMA);
+        key(45, InputConstants.KEY_MINUS);
+        key(46, InputConstants.KEY_PERIOD);
+        key(47, InputConstants.KEY_SLASH);
+        key(48, InputConstants.KEY_0);
+        key(49, InputConstants.KEY_1);
+        key(50, InputConstants.KEY_2);
+        key(51, InputConstants.KEY_3);
+        key(52, InputConstants.KEY_4);
+        key(53, InputConstants.KEY_5);
+        key(54, InputConstants.KEY_6);
+        key(55, InputConstants.KEY_7);
+        key(56, InputConstants.KEY_8);
+        key(57, InputConstants.KEY_9);
+        key(59, InputConstants.KEY_SEMICOLON);
+        key(61, InputConstants.KEY_EQUALS);
+        key(65, InputConstants.KEY_A);
+        key(66, InputConstants.KEY_B);
+        key(67, InputConstants.KEY_C);
+        key(68, InputConstants.KEY_D);
+        key(69, InputConstants.KEY_E);
+        key(70, InputConstants.KEY_F);
+        key(71, InputConstants.KEY_G);
+        key(72, InputConstants.KEY_H);
+        key(73, InputConstants.KEY_I);
+        key(74, InputConstants.KEY_J);
+        key(75, InputConstants.KEY_K);
+        key(76, InputConstants.KEY_L);
+        key(77, InputConstants.KEY_M);
+        key(78, InputConstants.KEY_N);
+        key(79, InputConstants.KEY_O);
+        key(80, InputConstants.KEY_P);
+        key(81, InputConstants.KEY_Q);
+        key(82, InputConstants.KEY_R);
+        key(83, InputConstants.KEY_S);
+        key(84, InputConstants.KEY_T);
+        key(85, InputConstants.KEY_U);
+        key(86, InputConstants.KEY_V);
+        key(87, InputConstants.KEY_W);
+        key(88, InputConstants.KEY_X);
+        key(89, InputConstants.KEY_Y);
+        key(90, InputConstants.KEY_Z);
+        key(91, InputConstants.KEY_LBRACKET);
+        key(92, InputConstants.KEY_BACKSLASH);
+        key(93, InputConstants.KEY_RBRACKET);
+        key(96, InputConstants.KEY_GRAVE);
+        key(256, InputConstants.KEY_ESCAPE);
+        key(257, InputConstants.KEY_RETURN);
+        key(258, InputConstants.KEY_TAB);
+        key(259, InputConstants.KEY_BACKSPACE);
+        key(260, InputConstants.KEY_INSERT);
+        key(261, InputConstants.KEY_DELETE);
+        key(262, InputConstants.KEY_RIGHT);
+        key(263, InputConstants.KEY_LEFT);
+        key(264, InputConstants.KEY_DOWN);
+        key(265, InputConstants.KEY_UP);
+        key(266, InputConstants.KEY_PAGEUP);
+        key(267, InputConstants.KEY_PAGEDOWN);
+        key(268, InputConstants.KEY_HOME);
+        key(269, InputConstants.KEY_END);
+        key(280, InputConstants.KEY_CAPSLOCK);
+        key(281, InputConstants.KEY_SCROLLLOCK);
+        key(282, InputConstants.KEY_NUMLOCK);
+        key(283, InputConstants.KEY_PRINTSCREEN);
+        key(284, InputConstants.KEY_PAUSE);
+        key(290, InputConstants.KEY_F1);
+        key(291, InputConstants.KEY_F2);
+        key(292, InputConstants.KEY_F3);
+        key(293, InputConstants.KEY_F4);
+        key(294, InputConstants.KEY_F5);
+        key(295, InputConstants.KEY_F6);
+        key(296, InputConstants.KEY_F7);
+        key(297, InputConstants.KEY_F8);
+        key(298, InputConstants.KEY_F9);
+        key(299, InputConstants.KEY_F10);
+        key(300, InputConstants.KEY_F11);
+        key(301, InputConstants.KEY_F12);
+        key(302, InputConstants.KEY_F13);
+        key(303, InputConstants.KEY_F14);
+        key(304, InputConstants.KEY_F15);
+        key(305, InputConstants.KEY_F16);
+        key(306, InputConstants.KEY_F17);
+        key(307, InputConstants.KEY_F18);
+        key(308, InputConstants.KEY_F19);
+        key(309, InputConstants.KEY_F20);
+        key(310, InputConstants.KEY_F21);
+        key(311, InputConstants.KEY_F22);
+        key(312, InputConstants.KEY_F23);
+        key(313, InputConstants.KEY_F24);
+        key(320, InputConstants.KEY_NUMPAD0);
+        key(321, InputConstants.KEY_NUMPAD1);
+        key(322, InputConstants.KEY_NUMPAD2);
+        key(323, InputConstants.KEY_NUMPAD3);
+        key(324, InputConstants.KEY_NUMPAD4);
+        key(325, InputConstants.KEY_NUMPAD5);
+        key(326, InputConstants.KEY_NUMPAD6);
+        key(327, InputConstants.KEY_NUMPAD7);
+        key(328, InputConstants.KEY_NUMPAD8);
+        key(329, InputConstants.KEY_NUMPAD9);
+        key(330, InputConstants.KEY_NUMPADCOMMA);
+        key(332, InputConstants.KEY_MULTIPLY);
+        key(334, InputConstants.KEY_ADD);
+        key(335, InputConstants.KEY_NUMPADENTER);
+        key(336, InputConstants.KEY_NUMPADEQUALS);
+        key(340, InputConstants.KEY_LSHIFT);
+        key(341, InputConstants.KEY_LCONTROL);
+        key(342, InputConstants.KEY_LALT);
+        key(343, InputConstants.KEY_LGUI);
+        key(344, InputConstants.KEY_RSHIFT);
+        key(345, InputConstants.KEY_RCONTROL);
+        key(346, InputConstants.KEY_RALT);
+        key(347, InputConstants.KEY_RGUI);
+    }
+    *///?}
+
+    /** A Saturn (GLFW) key code as the game's, or -1 */
+    public static int toGame(int key) {
+        //? if >=26.3 {
+        /*return TO_GAME.get(key);
+        *///?} else
+        return key;
+    }
+
+    /** A key code from the game as Saturn's (GLFW), or -1 */
+    public static int toSaturn(int key) {
+        //? if >=26.3 {
+        /*return TO_SATURN.get(key);
+        *///?} else
+        return key;
+    }
+
+    /** The game's modifier flags as GLFW's */
+    public static int modifiersToSaturn(int modifiers) {
+        //? if >=26.3 {
+        /*int glfw = 0;
+        if ((modifiers & InputConstants.MOD_SHIFT) != 0) glfw |= GLFWProvider.GLFW_MOD_SHIFT;
+        if ((modifiers & InputConstants.MOD_CONTROL) != 0) glfw |= GLFWProvider.GLFW_MOD_CONTROL;
+        if ((modifiers & InputConstants.MOD_ALT) != 0) glfw |= GLFWProvider.GLFW_MOD_ALT;
+        if ((modifiers & InputConstants.MOD_SUPER) != 0) glfw |= GLFWProvider.GLFW_MOD_SUPER;
+        if ((modifiers & InputConstants.MOD_CAPS_LOCK) != 0) glfw |= GLFWProvider.GLFW_MOD_CAPS_LOCK;
+        if ((modifiers & InputConstants.MOD_NUM_LOCK) != 0) glfw |= GLFWProvider.GLFW_MOD_NUM_LOCK;
+        return glfw;
+        *///?} else
+        return modifiers;
+    }
+
+    /** A mouse button from the game as GLFW's (left 0, right 1, middle 2, then the side buttons) */
+    public static int mouseButtonToSaturn(int button) {
+        //? if >=26.3 {
+        /*if (button == InputConstants.MOUSE_BUTTON_LEFT) return 0;
+        if (button == InputConstants.MOUSE_BUTTON_RIGHT) return 1;
+        if (button == InputConstants.MOUSE_BUTTON_MIDDLE) return 2;
+        return button - 1;
+        *///?} else
+        return button;
+    }
+}

src/main/java/org/saturnclient/impl/provider/RefConstructorImpl.java

@@ -4,22 +4,22 @@ import org.saturnclient.common.provider.RefConstructorProvider;
 import org.saturnclient.common.ref.asset.IdentifierRef;
 import org.saturnclient.common.ref.render.TextRef;
 
-import net.minecraft.text.Text;
-import net.minecraft.util.Identifier;
+import net.minecraft.network.chat.Component;
+import net.minecraft.resources.Identifier;
 
 public class RefConstructorImpl implements RefConstructorProvider {
     @Override
     public IdentifierRef identifier(String fullPath) {
-        return (IdentifierRef) (Object) Identifier.of(fullPath);
+        return (IdentifierRef) (Object) Identifier.parse(fullPath);
     }
 
     @Override
     public IdentifierRef identifier(String namespace, String path) {
-        return (IdentifierRef) (Object) Identifier.of(namespace, path);
+        return (IdentifierRef) (Object) Identifier.fromNamespaceAndPath(namespace, path);
     }
 
     @Override
     public TextRef text(String text) {
-        return (TextRef) (Text) Text.literal(text);
+        return (TextRef) (Component) Component.literal(text);
     }
 }

src/main/java/org/saturnclient/impl/provider/SaturnProviderImpl.java

@@ -5,14 +5,14 @@ import java.util.UUID;
 import java.util.function.Supplier;
 
 import net.fabricmc.loader.api.FabricLoader;
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.client.toast.SystemToast;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.components.toasts.SystemToast;
 //? if >=1.21.9 {
-import net.minecraft.entity.player.SkinTextures;
+import net.minecraft.world.entity.player.PlayerSkin;
 //?} else
-//import net.minecraft.client.util.SkinTextures;
-import net.minecraft.text.Text;
-import net.minecraft.util.Identifier;
+//import net.minecraft.client.resources.PlayerSkin;
+import net.minecraft.network.chat.Component;
+import net.minecraft.resources.Identifier;
 
 import org.saturnclient.common.provider.SaturnProvider;
 import org.saturnclient.common.ref.asset.IdentifierRef;
@@ -57,18 +57,18 @@ public class SaturnProviderImpl implements SaturnProvider {
     }
 
     /** Shown longer than the vanilla default, since these ask the player to act. */
-    private static final SystemToast.Type WARNING_TOAST = new SystemToast.Type(15_000L);
+    private static final SystemToast.SystemToastId WARNING_TOAST = new SystemToast.SystemToastId(15_000L);
 
     @Override
     public IdentifierRef getPlayerSkin() {
         if (playerSkin == null) {
-            MinecraftClient client = MinecraftClient.getInstance();
+            Minecraft client = Minecraft.getInstance();
             // 1.21.9 moved SkinTextures and renamed the skin provider's lookup.
             //? if >=1.21.9 {
-            Supplier<SkinTextures> textures = client.getSkinProvider().supplySkinTextures(client.getGameProfile(), false);
+            Supplier<PlayerSkin> textures = client.getSkinManager().createLookup(client.getGameProfile(), false);
             playerSkin = () -> textures.get().body().texturePath();
             //?} else {
-            /*Supplier<SkinTextures> textures = client.getSkinProvider().getSkinTexturesSupplier(client.getGameProfile());
+            /*Supplier<PlayerSkin> textures = client.getSkinManager().lookupInsecure(client.getGameProfile());
             playerSkin = () -> textures.get().texture();
             *///?}
         }
@@ -85,9 +85,14 @@ public class SaturnProviderImpl implements SaturnProvider {
 
     @Override
     public void showWarning(String title, String message) {
-        MinecraftClient client = MinecraftClient.getInstance();
-        client.execute(() -> client.getToastManager().add(
-                SystemToast.create(client, WARNING_TOAST, Text.literal(title), Text.literal(message))));
+        Minecraft client = Minecraft.getInstance();
+        //? if >=26.2 {
+        /*client.execute(() -> SystemToast.add(client.gui.toastManager(), WARNING_TOAST, Component.literal(title),
+                Component.literal(message)));
+        *///?} else {
+        client.execute(() -> client.getToastManager().addToast(
+                SystemToast.multiline(client, WARNING_TOAST, Component.literal(title), Component.literal(message))));
+        //?}
     }
 
     @Override

src/main/java/org/saturnclient/impl/ui/EntityDrawerImpl.java

@@ -11,12 +11,12 @@ import org.saturnclient.ui.RenderScope;
 import org.saturnclient.ui.components.SkinPreview.EntityDrawer;
 
 //? if >=1.21.9 {
-import net.minecraft.client.render.entity.EntityRenderManager;
+import net.minecraft.client.renderer.entity.EntityRenderDispatcher;
 //?} else
-//import net.minecraft.client.render.entity.EntityRenderDispatcher;
-import net.minecraft.client.render.entity.EntityRenderer;
-import net.minecraft.client.render.entity.state.EntityRenderState;
-import net.minecraft.entity.LivingEntity;
+//import net.minecraft.client.renderer.entity.EntityRenderDispatcher;
+import net.minecraft.client.renderer.entity.EntityRenderer;
+import net.minecraft.client.renderer.entity.state.EntityRenderState;
+import net.minecraft.world.entity.LivingEntity;
 
 public class EntityDrawerImpl implements EntityDrawer {
     @Override
@@ -38,25 +38,25 @@ public class EntityDrawerImpl implements EntityDrawer {
         renderScope.enableScissor(x1, y1, x2, y2);
         Quaternionf quaternionf = (new Quaternionf()).rotateZ((float) Math.PI);
         Quaternionf quaternionf2 = new Quaternionf();
-        float j = entity.bodyYaw;
-        float k = entity.getYaw();
-        float l = entity.getPitch();
-        float m = entity.lastHeadYaw;
-        float n = entity.headYaw;
-        entity.bodyYaw = 180.0F + yaw;
-        entity.setYaw(180.0F + yaw);
-        entity.setPitch(0.0F);
-        entity.headYaw = entity.getYaw();
-        entity.lastHeadYaw = entity.getYaw();
+        float j = entity.yBodyRot;
+        float k = entity.getYRot();
+        float l = entity.getXRot();
+        float m = entity.yHeadRotO;
+        float n = entity.yHeadRot;
+        entity.yBodyRot = 180.0F + yaw;
+        entity.setYRot(180.0F + yaw);
+        entity.setXRot(0.0F);
+        entity.yHeadRot = entity.getYRot();
+        entity.yHeadRotO = entity.getYRot();
         float o = entity.getScale();
-        Vector3f vector3f = new Vector3f(0.0F, entity.getHeight() / 2.0F + scale * o, 0.0F);
+        Vector3f vector3f = new Vector3f(0.0F, entity.getBbHeight() / 2.0F + scale * o, 0.0F);
         float p = (float) size / o;
         drawEntity(renderScope, x1, y1, x2, y2, p, vector3f, quaternionf, quaternionf2, entity);
-        entity.bodyYaw = j;
-        entity.setYaw(k);
-        entity.setPitch(l);
-        entity.lastHeadYaw = m;
-        entity.headYaw = n;
+        entity.yBodyRot = j;
+        entity.setYRot(k);
+        entity.setXRot(l);
+        entity.yHeadRotO = m;
+        entity.yHeadRot = n;
         renderScope.disableScissor();
     }
 
@@ -64,13 +64,13 @@ public class EntityDrawerImpl implements EntityDrawer {
             Vector3f translation, Quaternionf rotation, @Nullable Quaternionf overrideCameraAngle,
             LivingEntity entity) {
         //? if >=1.21.9 {
-        EntityRenderManager entityRenderDispatcher = SaturnClient.client.getEntityRenderDispatcher();
+        EntityRenderDispatcher entityRenderDispatcher = SaturnClient.client.getEntityRenderDispatcher();
         //?} else
         //EntityRenderDispatcher entityRenderDispatcher = SaturnClient.client.getEntityRenderDispatcher();
         EntityRenderer<? super LivingEntity, ?> entityRenderer = entityRenderDispatcher.getRenderer(entity);
-        EntityRenderState entityRenderState = entityRenderer.getAndUpdateRenderState(entity, 1.0F);
+        EntityRenderState entityRenderState = entityRenderer.createRenderState(entity, 1.0F);
         //? if <1.21.11
-        //entityRenderState.hitbox = null;
+        //entityRenderState.hitboxesRenderState = null;
 
         if (renderScope instanceof RenderScopeImpl i)
             i.addEntity(entityRenderState, scale, translation, rotation, overrideCameraAngle, x1, y1, x2, y2);
@@ -84,9 +84,9 @@ import org.saturnclient.saturnclient.SaturnClient;
 import org.saturnclient.ui.RenderScope;
 import org.saturnclient.ui.components.SkinPreview.EntityDrawer;
 
-import net.minecraft.client.render.DiffuseLighting;
-import net.minecraft.client.render.entity.EntityRenderDispatcher;
-import net.minecraft.entity.LivingEntity;
+import com.mojang.blaze3d.platform.Lighting;
+import net.minecraft.client.renderer.entity.EntityRenderDispatcher;
+import net.minecraft.world.entity.LivingEntity;
 
 public class EntityDrawerImpl implements EntityDrawer {
     // Draws the entity in the box, turned by yaw degrees (0 faces the viewer) with its head straight.
@@ -96,66 +96,66 @@ public class EntityDrawerImpl implements EntityDrawer {
         float h = (float) (y1 + y2) / 2.0F;
         renderScope.enableScissor(x1, y1, x2, y2);
         Quaternionf quaternionf = (new Quaternionf()).rotateZ(3.1415927F);
-        float k = entity.bodyYaw;
-        float l = entity.getYaw();
-        float m = entity.getPitch();
+        float k = entity.yBodyRot;
+        float l = entity.getYRot();
+        float m = entity.getXRot();
         //? if >=1.21.5
-        float n = entity.lastHeadYaw;
+        float n = entity.yHeadRotO;
         //? if <1.21.5
-        //float n = entity.prevHeadYaw;
-        float o = entity.headYaw;
-        entity.setYaw(180.0F + yaw);
-        entity.bodyYaw = 180.0F + yaw;
-        entity.setPitch(0.0F);
-        entity.headYaw = entity.getYaw();
+        //float n = entity.yHeadRotO;
+        float o = entity.yHeadRot;
+        entity.setYRot(180.0F + yaw);
+        entity.yBodyRot = 180.0F + yaw;
+        entity.setXRot(0.0F);
+        entity.yHeadRot = entity.getYRot();
         //? if >=1.21.5
-        entity.lastHeadYaw = entity.getHeadYaw();
+        entity.yHeadRotO = entity.getYHeadRot();
         //? if <1.21.5
-        //entity.prevHeadYaw = entity.getHeadYaw();
+        //entity.yHeadRotO = entity.getYHeadRot();
         entity.setCustomNameVisible(false);
 
         float p = entity.getScale();
-        Vector3f vector3f = new Vector3f(0.0F, entity.getHeight() / 2.0F + f * p, 0.0F);
+        Vector3f vector3f = new Vector3f(0.0F, entity.getBbHeight() / 2.0F + f * p, 0.0F);
         float q = (float) size / p;
         drawEntity(renderScope, g, h, q, vector3f, quaternionf, null, entity);
 
         entity.setCustomNameVisible(true);
-        entity.bodyYaw = k;
-        entity.setYaw(l);
-        entity.setPitch(m);
+        entity.yBodyRot = k;
+        entity.setYRot(l);
+        entity.setXRot(m);
         //? if >=1.21.5
-        entity.lastHeadYaw = n;
+        entity.yHeadRotO = n;
         //? if <1.21.5
-        //entity.prevHeadYaw = n;
-        entity.headYaw = o;
+        //entity.yHeadRotO = n;
+        entity.yHeadRot = o;
         renderScope.disableScissor();
     }
 
     public static void drawEntity(RenderScope renderScope, float x, float y, float size, Vector3f vector3f,
             Quaternionf quaternionf, @Nullable Quaternionf quaternionf2, LivingEntity entity) {
         if (renderScope instanceof RenderScopeImpl scopeImpl) {
-            scopeImpl.matrices.push();
+            scopeImpl.matrices.pushPose();
             scopeImpl.matrices.translate((double) x, (double) y, 0);
             scopeImpl.matrices.scale(size, size, -size);
             scopeImpl.matrices.translate(vector3f.x, vector3f.y, vector3f.z);
-            scopeImpl.matrices.multiply(quaternionf);
+            scopeImpl.matrices.mulPose(quaternionf);
             scopeImpl.draw();
             //? if >=1.21.5
-            DiffuseLighting.disableGuiDepthLighting();
+            Lighting.setupForFlatItems();
             //? if <1.21.5
-            //DiffuseLighting.method_34742();
+            //Lighting.setupForEntityInInventory();
             EntityRenderDispatcher entityRenderDispatcher = SaturnClient.client.getEntityRenderDispatcher();
 
-            entityRenderDispatcher.setRenderShadows(false);
+            entityRenderDispatcher.setRenderShadow(false);
             scopeImpl.draw((vertexConsumers) -> {
                 entityRenderDispatcher.render(entity, 0.0, 0.0, 0.0, 1.0F,
                         scopeImpl.matrices, vertexConsumers, 15728880);
             });
 
             scopeImpl.draw();
-            entityRenderDispatcher.setRenderShadows(true);
+            entityRenderDispatcher.setRenderShadow(true);
             scopeImpl.getMatrixStack().pop();
-            DiffuseLighting.enableGuiDepthLighting();
+            Lighting.setupFor3DItems();
         }
 
     }

src/main/java/org/saturnclient/impl/ui/GlassRenderer.java

@@ -17,7 +17,11 @@ package org.saturnclient.impl.ui;
 //? if >=1.21.6 {
 import java.io.Reader;
 import java.util.HashMap;
+//? if >=26.1
+//import java.util.LinkedHashSet;
 import java.util.Map;
+//? if >=26.1
+//import java.util.Set;
 
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
@@ -31,88 +35,160 @@ import com.mojang.serialization.JsonOps;
 import org.saturnclient.config.Config;
 import org.saturnclient.saturnclient.SaturnClient;
 
-import net.minecraft.client.gl.Framebuffer;
-import net.minecraft.client.gl.PostEffectPipeline;
-import net.minecraft.client.gl.PostEffectProcessor;
-import net.minecraft.client.gl.RenderPipelines;
-import net.minecraft.client.gl.SimpleFramebuffer;
-import net.minecraft.client.render.DefaultFramebufferSet;
-import net.minecraft.client.render.ProjectionMatrix2;
-import net.minecraft.client.texture.AbstractTexture;
-import net.minecraft.client.texture.TextureSetup;
-import net.minecraft.client.util.Pool;
-import net.minecraft.util.Identifier;
+import com.mojang.blaze3d.pipeline.RenderTarget;
+import net.minecraft.client.renderer.PostChainConfig;
+import net.minecraft.client.renderer.PostChain;
+import net.minecraft.client.renderer.RenderPipelines;
+import com.mojang.blaze3d.pipeline.TextureTarget;
+import net.minecraft.client.renderer.LevelTargetBundle;
+//? if >=26.2 {
+/*import com.mojang.blaze3d.GpuFormat;
+import net.minecraft.client.renderer.BindGroupLayouts;
+*///?}
+//? if >=26.1 {
+/*import net.minecraft.client.renderer.Projection;
+import net.minecraft.client.renderer.ProjectionMatrixBuffer;
+*///?} else
+import net.minecraft.client.renderer.CachedOrthoProjectionMatrixBuffer;
+import net.minecraft.client.renderer.texture.AbstractTexture;
+import net.minecraft.client.gui.render.TextureSetup;
+import com.mojang.blaze3d.resource.CrossFrameResourcePool;
+import net.minecraft.resources.Identifier;
 
 public final class GlassRenderer {
-    public static final RenderPipeline PIPELINE = RenderPipeline.builder(RenderPipelines.POSITION_TEX_COLOR_SNIPPET)
-            .withLocation(Identifier.of("saturnclient", "pipeline/glass"))
-            .withFragmentShader(Identifier.of("saturnclient", "core/glass"))
+    public static final RenderPipeline PIPELINE = RenderPipeline.builder(RenderPipelines.GUI_TEXTURED_SNIPPET)
+            .withLocation(Identifier.fromNamespaceAndPath("saturnclient", "pipeline/glass"))
+            .withFragmentShader(Identifier.fromNamespaceAndPath("saturnclient", "core/glass"))
+            //? if >=26.2 {
+            /*.withBindGroupLayout(BindGroupLayouts.SAMPLER1)
+            *///?} else
             .withSampler("Sampler1")
             // The transforms block ends with LineWidth before 1.21.11 (see glass.fsh).
             //? if <1.21.11
             //.withShaderDefine("HAS_LINE_WIDTH")
+            // 26.3 compiles through SPIR-V and moved TextureMat up the transforms block.
+            //? if >=26.3
+            //.withShaderDefine("EXPLICIT_LOCATIONS").withShaderDefine("TEXTURE_MAT_SECOND")
             .build();
 
-    private static final Identifier BLUR = Identifier.ofVanilla("post_effect/blur.json");
-    private static final ProjectionMatrix2 PROJECTION = new ProjectionMatrix2("saturn glass", 0.1f, 1000f, false);
+    private static final Identifier BLUR = Identifier.withDefaultNamespace("post_effect/blur.json");
+    //? if >=26.1 {
+    /*private static final Projection PROJECTION = new Projection();
+    private static final ProjectionMatrixBuffer PROJECTION_BUFFER = new ProjectionMatrixBuffer("saturn glass");
+
+    static {
+        // As vanilla sets up its post chains' projection; the chain sizes it when it runs.
+        PROJECTION.setupOrtho(0.1f, 1000f, 1f, 1f, false);
+    }
+    *///?} else
+    private static final CachedOrthoProjectionMatrixBuffer PROJECTION = new CachedOrthoProjectionMatrixBuffer("saturn glass", 0.1f, 1000f, false);
     // For the blurs' intermediate targets, freed once unused for a few frames
-    private static final Pool POOL = new Pool(3);
+    private static final CrossFrameResourcePool POOL = new CrossFrameResourcePool(3);
 
     // By blur strength. A blur that failed to load is kept as null, so it isn't retried every frame.
-    private static final Map<Integer, PostEffectProcessor> BLURS = new HashMap<>();
-    private static final Map<Integer, SimpleFramebuffer> BACKDROPS = new HashMap<>();
+    private static final Map<Integer, PostChain> BLURS = new HashMap<>();
+    private static final Map<Integer, TextureTarget> BACKDROPS = new HashMap<>();
 
     private GlassRenderer() {
     }
 
+    // From 26.1 the GUI is built before the frame's world is drawn, so the main framebuffer still
+    // holds the last frame, glass included. The copies wait until the GUI renderer is about to draw
+    // (GuiRendererMixin), when it holds this frame's world and panorama.
+    //? if >=26.1 {
+    /*private static final Set<Integer> PENDING = new LinkedHashSet<>();
+    *///?}
+
+    private static RenderTarget mainTarget() {
+        //? if >=26.2 {
+        /*return SaturnClient.client.gameRenderer.mainRenderTarget();
+        *///?} else
+        return SaturnClient.client.getMainRenderTarget();
+    }
+
     // Copies the main framebuffer and blurs the copy by blur. Call once a frame for each blur, while
     // the screen builds its GUI, before drawing glass with it.
     public static void captureBackdrop(int blur) {
-        Framebuffer main = SaturnClient.client.getFramebuffer();
-        int width = main.textureWidth;
-        int height = main.textureHeight;
+        RenderTarget main = mainTarget();
+        int width = main.width;
+        int height = main.height;
 
-        SimpleFramebuffer backdrop = BACKDROPS.get(blur);
+        TextureTarget backdrop = BACKDROPS.get(blur);
         if (backdrop == null) {
-            backdrop = new SimpleFramebuffer("Saturn glass " + blur, width, height, false);
+            // From 26.3 the depth format picks the depth buffer (none here); 26.2 takes a flag.
+            //? if >=26.3 {
+            /*backdrop = new TextureTarget("Saturn glass " + blur, width, height, GpuFormat.RGBA8_UNORM, null);
+            *///?} else if >=26.2 {
+            /*backdrop = new TextureTarget("Saturn glass " + blur, width, height, false, GpuFormat.RGBA8_UNORM);
+            *///?} else
+            backdrop = new TextureTarget("Saturn glass " + blur, width, height, false);
             BACKDROPS.put(blur, backdrop);
-        } else if (backdrop.textureWidth != width || backdrop.textureHeight != height) {
+        } else if (backdrop.width != width || backdrop.height != height) {
             backdrop.resize(width, height);
         }
         //? if <1.21.11
-        //backdrop.getColorAttachment().setTextureFilter(FilterMode.LINEAR, false);
+        //backdrop.getColorTexture().setTextureFilter(FilterMode.LINEAR, false);
 
-        RenderSystem.getDevice().createCommandEncoder().copyTextureToTexture(
-                main.getColorAttachment(), backdrop.getColorAttachment(), 0, 0, 0, 0, 0, width, height);
-
-        PostEffectProcessor processor = getBlur(blur);
-        if (processor != null) {
-            processor.render(backdrop, POOL);
+        //? if >=26.1 {
+        /*PENDING.add(blur);
     }
-        POOL.decrementLifespan();
+
+    // Copies and blurs the backdrops the GUI asked for this frame. GuiRendererMixin calls it once the
+    // world and the panorama are drawn, before the GUI.
+    public static void blurPendingBackdrops() {
+        RenderTarget main = mainTarget();
+        for (int blur : PENDING) {
+            TextureTarget backdrop = BACKDROPS.get(blur);
+            // The GUI already refers to the backdrop's texture, so after a resize it keeps the last
+            // frame's until the next one.
+            if (backdrop != null && backdrop.width == main.width && backdrop.height == main.height) {
+                blurBackdrop(main, backdrop, blur);
+            }
+        }
+        PENDING.clear();
+    }
+
+    private static void blurBackdrop(RenderTarget main, TextureTarget backdrop, int blur) {
+        int width = main.width;
+        int height = main.height;
+        *///?}
+        RenderSystem.getDevice().createCommandEncoder().copyTextureToTexture(
+                main.getColorTexture(), backdrop.getColorTexture(), 0, 0, 0, 0, 0, width, height);
+
+        PostChain processor = getBlur(blur);
+        if (processor != null) {
+            processor.process(backdrop, POOL);
+        }
+        POOL.endFrame();
         release(blur);
     }
 
     // The mask, then the copy blurred by blur, as the glass pipeline samples them
     public static TextureSetup textures(AbstractTexture mask, int blur) {
-        GpuTextureView backdrop = BACKDROPS.get(blur).getColorAttachmentView();
+        GpuTextureView backdrop = BACKDROPS.get(blur).getColorTextureView();
         //? if >=1.21.11
-        return TextureSetup.of(mask.getGlTextureView(), mask.getSampler(), backdrop, RenderSystem.getSamplerCache().get(FilterMode.LINEAR));
+        return TextureSetup.doubleTexture(mask.getTextureView(), mask.getSampler(), backdrop, RenderSystem.getSamplerCache().getClampToEdge(FilterMode.LINEAR));
         //? if <1.21.11
-        //return TextureSetup.of(mask.getGlTextureView(), backdrop);
+        //return TextureSetup.doubleTexture(mask.getTextureView(), backdrop);
     }
 
     // Frees the copies and blurs of strengths that are no longer set, besides kept
     private static void release(int kept) {
         BACKDROPS.entrySet().removeIf(entry -> {
             boolean unused = entry.getKey() != kept && !isSet(entry.getKey());
+            // The GUI already refers to this frame's pending backdrops.
+            //? if >=26.1
+            //unused &= !PENDING.contains(entry.getKey());
             if (unused) {
-                entry.getValue().delete();
+                entry.getValue().destroyBuffers();
             }
             return unused;
         });
         BLURS.entrySet().removeIf(entry -> {
             boolean unused = entry.getKey() != kept && !isSet(entry.getKey());
+            // The GUI already refers to this frame's pending backdrops.
+            //? if >=26.1
+            //unused &= !PENDING.contains(entry.getKey());
             if (unused && entry.getValue() != null) {
                 entry.getValue().close();
             }
@@ -124,7 +200,7 @@ public final class GlassRenderer {
         return blur == Config.menuBlur.value || blur == Config.widgetBlur.value;
     }
 
-    private static PostEffectProcessor getBlur(int blur) {
+    private static PostChain getBlur(int blur) {
         if (!BLURS.containsKey(blur)) {
             BLURS.put(blur, loadBlur(blur));
         }
@@ -133,14 +209,17 @@ public final class GlassRenderer {
 
     // Vanilla's blur, with its radius set to blur. Vanilla's own leaves it at 0, which makes the shader
     // read the menu blur setting (Saturn's animated background blur while a Saturn screen is open).
-    private static PostEffectProcessor loadBlur(int blur) {
-        try (Reader reader = SaturnClient.client.getResourceManager().getResourceOrThrow(BLUR).getReader()) {
+    private static PostChain loadBlur(int blur) {
+        try (Reader reader = SaturnClient.client.getResourceManager().getResourceOrThrow(BLUR).openAsReader()) {
             JsonElement json = JsonParser.parseReader(reader);
             setRadius(json, blur);
 
-            PostEffectPipeline pipeline = PostEffectPipeline.CODEC.parse(JsonOps.INSTANCE, json).getOrThrow();
-            return PostEffectProcessor.parseEffect(pipeline, SaturnClient.client.getTextureManager(),
-                    DefaultFramebufferSet.MAIN_ONLY, Identifier.of("saturnclient", "glass_blur_" + blur), PROJECTION);
+            PostChainConfig pipeline = PostChainConfig.CODEC.parse(JsonOps.INSTANCE, json).getOrThrow();
+            return PostChain.load(pipeline, SaturnClient.client.getTextureManager(),
+                    //? if >=26.1 {
+                    /*LevelTargetBundle.MAIN_TARGETS, Identifier.fromNamespaceAndPath("saturnclient", "glass_blur_" + blur), PROJECTION, PROJECTION_BUFFER);
+                    *///?} else
+                    LevelTargetBundle.MAIN_TARGETS, Identifier.fromNamespaceAndPath("saturnclient", "glass_blur_" + blur), PROJECTION);
         } catch (Exception e) {
             SaturnClient.LOGGER.error("Couldn't load the glass blur", e);
             return null;
@@ -171,68 +250,68 @@ import com.mojang.blaze3d.textures.FilterMode;
 import org.saturnclient.config.Config;
 import org.saturnclient.saturnclient.SaturnClient;
 
-import net.minecraft.client.gl.Framebuffer;
-import net.minecraft.client.gl.PostEffectProcessor;
-import net.minecraft.client.gl.RenderPipelines;
-import net.minecraft.client.gl.SimpleFramebuffer;
-import net.minecraft.client.render.DefaultFramebufferSet;
-import net.minecraft.client.render.RenderLayer;
-import net.minecraft.client.render.RenderPhase;
-import net.minecraft.client.util.Pool;
-import net.minecraft.util.Identifier;
+import com.mojang.blaze3d.pipeline.RenderTarget;
+import net.minecraft.client.renderer.PostChain;
+import net.minecraft.client.renderer.RenderPipelines;
+import com.mojang.blaze3d.pipeline.TextureTarget;
+import net.minecraft.client.renderer.LevelTargetBundle;
+import net.minecraft.client.renderer.RenderType;
+import net.minecraft.client.renderer.RenderStateShard;
+import com.mojang.blaze3d.resource.CrossFrameResourcePool;
+import net.minecraft.resources.Identifier;
 
 public final class GlassRenderer {
-    private static final RenderPipeline PIPELINE = RenderPipeline.builder(RenderPipelines.POSITION_TEX_COLOR_SNIPPET)
-            .withLocation(Identifier.of("saturnclient", "pipeline/glass"))
-            .withFragmentShader(Identifier.of("saturnclient", "core/glass_pre_1_21_6"))
+    private static final RenderPipeline PIPELINE = RenderPipeline.builder(RenderPipelines.GUI_TEXTURED_SNIPPET)
+            .withLocation(Identifier.fromNamespaceAndPath("saturnclient", "pipeline/glass"))
+            .withFragmentShader(Identifier.fromNamespaceAndPath("saturnclient", "core/glass_pre_1_21_6"))
             .withSampler("Sampler1")
             .build();
 
-    private static final Identifier BLUR = Identifier.ofVanilla("blur");
+    private static final Identifier BLUR = Identifier.withDefaultNamespace("blur");
     // For the blur's intermediate target, freed once unused for a few frames
-    private static final Pool POOL = new Pool(3);
+    private static final CrossFrameResourcePool POOL = new CrossFrameResourcePool(3);
 
-    private static final Map<Integer, SimpleFramebuffer> BACKDROPS = new HashMap<>();
+    private static final Map<Integer, TextureTarget> BACKDROPS = new HashMap<>();
     // By mask and blur
-    private static final Map<String, RenderLayer> LAYERS = new HashMap<>();
+    private static final Map<String, RenderType> LAYERS = new HashMap<>();
     // The game behind the screen before the screen blurs it, which glass is blurred from
-    private static SimpleFramebuffer background;
+    private static TextureTarget background;
 
     private GlassRenderer() {
     }
 
     // Saves the main framebuffer for glass. Call each frame before the screen blurs its background.
     public static void saveBackground() {
-        background = copy(SaturnClient.client.getFramebuffer(), background, "Saturn glass background");
+        background = copy(SaturnClient.client.getMainRenderTarget(), background, "Saturn glass background");
     }
 
     // Copies the saved background and blurs the copy by blur. Call once a frame for each blur, before
     // drawing glass with it.
     public static void captureBackdrop(int blur) {
-        Framebuffer from = background != null ? background : SaturnClient.client.getFramebuffer();
-        SimpleFramebuffer backdrop = copy(from, BACKDROPS.get(blur), "Saturn glass " + blur);
+        RenderTarget from = background != null ? background : SaturnClient.client.getMainRenderTarget();
+        TextureTarget backdrop = copy(from, BACKDROPS.get(blur), "Saturn glass " + blur);
         BACKDROPS.put(blur, backdrop);
 
-        PostEffectProcessor processor = SaturnClient.client.getShaderLoader().loadPostEffect(BLUR,
-                DefaultFramebufferSet.MAIN_ONLY);
+        PostChain processor = SaturnClient.client.getShaderManager().getPostChain(BLUR,
+                LevelTargetBundle.MAIN_TARGETS);
         if (processor != null) {
-            processor.render(backdrop, POOL, pass -> pass.setUniform("Radius", (float) blur));
+            processor.process(backdrop, POOL, pass -> pass.setUniform("Radius", (float) blur));
         }
-        POOL.decrementLifespan();
+        POOL.endFrame();
         release(blur);
     }
 
     // Draws glass through mask with the copy blurred by blur
-    public static RenderLayer getLayer(Identifier mask, int blur) {
-        return LAYERS.computeIfAbsent(mask + " " + blur, key -> RenderLayer.of("saturn_glass", 786432, PIPELINE,
-                RenderLayer.MultiPhaseParameters.builder()
-                        .texture(new RenderPhase.TextureBase(() -> {
+    public static RenderType getLayer(Identifier mask, int blur) {
+        return LAYERS.computeIfAbsent(mask + " " + blur, key -> RenderType.create("saturn_glass", 786432, PIPELINE,
+                RenderType.CompositeState.builder()
+                        .setTextureState(new RenderStateShard.EmptyTextureStateShard(() -> {
                             RenderSystem.setShaderTexture(0,
-                                    SaturnClient.client.getTextureManager().getTexture(mask).getGlTexture());
-                            RenderSystem.setShaderTexture(1, BACKDROPS.get(blur).getColorAttachment());
+                                    SaturnClient.client.getTextureManager().getTexture(mask).getTexture());
+                            RenderSystem.setShaderTexture(1, BACKDROPS.get(blur).getColorTexture());
                         }, () -> {
                         }))
-                        .build(false)));
+                        .createCompositeState(false)));
     }
 
     // Frees the copies of strengths that are no longer set, besides kept
@@ -241,26 +320,26 @@ public final class GlassRenderer {
             boolean unused = entry.getKey() != kept && entry.getKey() != Config.menuBlur.value
                     && entry.getKey() != Config.widgetBlur.value;
             if (unused) {
-                entry.getValue().delete();
+                entry.getValue().destroyBuffers();
             }
             return unused;
         });
     }
 
     // Copies from into to, made or resized to match
-    private static SimpleFramebuffer copy(Framebuffer from, SimpleFramebuffer to, String name) {
-        int width = from.textureWidth;
-        int height = from.textureHeight;
+    private static TextureTarget copy(RenderTarget from, TextureTarget to, String name) {
+        int width = from.width;
+        int height = from.height;
 
         if (to == null) {
-            to = new SimpleFramebuffer(name, width, height, false);
-        } else if (to.textureWidth != width || to.textureHeight != height) {
+            to = new TextureTarget(name, width, height, false);
+        } else if (to.width != width || to.height != height) {
             to.resize(width, height);
         }
-        to.getColorAttachment().setTextureFilter(FilterMode.LINEAR, false);
+        to.getColorTexture().setTextureFilter(FilterMode.LINEAR, false);
 
         RenderSystem.getDevice().createCommandEncoder().copyTextureToTexture(
-                from.getColorAttachment(), to.getColorAttachment(), 0, 0, 0, 0, 0, width, height);
+                from.getColorTexture(), to.getColorTexture(), 0, 0, 0, 0, 0, width, height);
         return to;
     }
 }
@@ -277,72 +356,72 @@ import com.mojang.blaze3d.systems.RenderSystem;
 import org.saturnclient.config.Config;
 import org.saturnclient.saturnclient.SaturnClient;
 
-import net.minecraft.client.gl.Defines;
-import net.minecraft.client.gl.Framebuffer;
-import net.minecraft.client.gl.PostEffectProcessor;
-import net.minecraft.client.gl.ShaderProgramKey;
-import net.minecraft.client.gl.SimpleFramebuffer;
-import net.minecraft.client.render.DefaultFramebufferSet;
-import net.minecraft.client.render.RenderLayer;
-import net.minecraft.client.render.RenderPhase;
-import net.minecraft.client.render.VertexFormat;
-import net.minecraft.client.render.VertexFormats;
-import net.minecraft.client.util.Pool;
-import net.minecraft.util.Identifier;
+import net.minecraft.client.renderer.ShaderDefines;
+import com.mojang.blaze3d.pipeline.RenderTarget;
+import net.minecraft.client.renderer.PostChain;
+import net.minecraft.client.renderer.ShaderProgram;
+import com.mojang.blaze3d.pipeline.TextureTarget;
+import net.minecraft.client.renderer.LevelTargetBundle;
+import net.minecraft.client.renderer.RenderType;
+import net.minecraft.client.renderer.RenderStateShard;
+import com.mojang.blaze3d.vertex.VertexFormat;
+import com.mojang.blaze3d.vertex.DefaultVertexFormat;
+import com.mojang.blaze3d.resource.CrossFrameResourcePool;
+import net.minecraft.resources.Identifier;
 
 public final class GlassRenderer {
-    private static final ShaderProgramKey PROGRAM = new ShaderProgramKey(Identifier.of("saturnclient", "core/glass"),
-            VertexFormats.POSITION_TEXTURE_COLOR, Defines.EMPTY);
+    private static final ShaderProgram PROGRAM = new ShaderProgram(Identifier.fromNamespaceAndPath("saturnclient", "core/glass"),
+            DefaultVertexFormat.POSITION_TEX_COLOR, ShaderDefines.EMPTY);
 
-    private static final Identifier BLUR = Identifier.ofVanilla("blur");
+    private static final Identifier BLUR = Identifier.withDefaultNamespace("blur");
     // For the blur's intermediate target, freed once unused for a few frames
-    private static final Pool POOL = new Pool(3);
+    private static final CrossFrameResourcePool POOL = new CrossFrameResourcePool(3);
 
-    private static final Map<Integer, SimpleFramebuffer> BACKDROPS = new HashMap<>();
+    private static final Map<Integer, TextureTarget> BACKDROPS = new HashMap<>();
     // By mask and blur
-    private static final Map<String, RenderLayer> LAYERS = new HashMap<>();
+    private static final Map<String, RenderType> LAYERS = new HashMap<>();
     // The game behind the screen before the screen blurs it, which glass is blurred from
-    private static SimpleFramebuffer background;
+    private static TextureTarget background;
 
     private GlassRenderer() {
     }
 
     // Saves the main framebuffer for glass. Call each frame before the screen blurs its background.
     public static void saveBackground() {
-        background = copy(SaturnClient.client.getFramebuffer(), background);
+        background = copy(SaturnClient.client.getMainRenderTarget(), background);
     }
 
     // Copies the saved background and blurs the copy by blur. Call once a frame for each blur, before
     // drawing glass with it.
     public static void captureBackdrop(int blur) {
-        Framebuffer from = background != null ? background : SaturnClient.client.getFramebuffer();
-        SimpleFramebuffer backdrop = copy(from, BACKDROPS.get(blur));
+        RenderTarget from = background != null ? background : SaturnClient.client.getMainRenderTarget();
+        TextureTarget backdrop = copy(from, BACKDROPS.get(blur));
         BACKDROPS.put(blur, backdrop);
 
-        PostEffectProcessor processor = SaturnClient.client.getShaderLoader().loadPostEffect(BLUR,
-                DefaultFramebufferSet.MAIN_ONLY);
+        PostChain processor = SaturnClient.client.getShaderManager().getPostChain(BLUR,
+                LevelTargetBundle.MAIN_TARGETS);
         if (processor != null) {
-            processor.setUniforms("Radius", blur);
-            processor.render(backdrop, POOL);
+            processor.setUniform("Radius", blur);
+            processor.process(backdrop, POOL);
         }
-        POOL.decrementLifespan();
+        POOL.endFrame();
         release(blur);
-        SaturnClient.client.getFramebuffer().beginWrite(false);
+        SaturnClient.client.getMainRenderTarget().bindWrite(false);
     }
 
     // Draws glass through mask with the copy blurred by blur
-    public static RenderLayer getLayer(Identifier mask, int blur) {
-        return LAYERS.computeIfAbsent(mask + " " + blur, key -> RenderLayer.of("saturn_glass",
-                VertexFormats.POSITION_TEXTURE_COLOR, VertexFormat.DrawMode.QUADS, 786432,
-                RenderLayer.MultiPhaseParameters.builder()
-                        .texture(new RenderPhase.TextureBase(() -> {
+    public static RenderType getLayer(Identifier mask, int blur) {
+        return LAYERS.computeIfAbsent(mask + " " + blur, key -> RenderType.create("saturn_glass",
+                DefaultVertexFormat.POSITION_TEX_COLOR, VertexFormat.Mode.QUADS, 786432,
+                RenderType.CompositeState.builder()
+                        .setTextureState(new RenderStateShard.EmptyTextureStateShard(() -> {
                             RenderSystem.setShaderTexture(0, mask);
-                            RenderSystem.setShaderTexture(1, BACKDROPS.get(blur).getColorAttachment());
+                            RenderSystem.setShaderTexture(1, BACKDROPS.get(blur).getColorTextureId());
                         }, () -> {
                         }))
-                        .program(new RenderPhase.ShaderProgram(PROGRAM))
-                        .transparency(RenderPhase.TRANSLUCENT_TRANSPARENCY)
-                        .build(false)));
+                        .setShaderState(new RenderStateShard.ShaderStateShard(PROGRAM))
+                        .setTransparencyState(RenderStateShard.TRANSLUCENT_TRANSPARENCY)
+                        .createCompositeState(false)));
     }
 
     // Frees the copies of strengths that are no longer set, besides kept
@@ -351,29 +430,29 @@ public final class GlassRenderer {
             boolean unused = entry.getKey() != kept && entry.getKey() != Config.menuBlur.value
                     && entry.getKey() != Config.widgetBlur.value;
             if (unused) {
-                entry.getValue().delete();
+                entry.getValue().destroyBuffers();
             }
             return unused;
         });
     }
 
     // Copies from into to, made or resized to match
-    private static SimpleFramebuffer copy(Framebuffer from, SimpleFramebuffer to) {
-        int width = from.textureWidth;
-        int height = from.textureHeight;
+    private static TextureTarget copy(RenderTarget from, TextureTarget to) {
+        int width = from.width;
+        int height = from.height;
 
         if (to == null) {
-            to = new SimpleFramebuffer(width, height, false);
-        } else if (to.textureWidth != width || to.textureHeight != height) {
+            to = new TextureTarget(width, height, false);
+        } else if (to.width != width || to.height != height) {
             to.resize(width, height);
         }
-        to.setTexFilter(GL11.GL_LINEAR);
+        to.setFilterMode(GL11.GL_LINEAR);
 
-        GlStateManager._glBindFramebuffer(GL30.GL_READ_FRAMEBUFFER, from.fbo);
-        GlStateManager._glBindFramebuffer(GL30.GL_DRAW_FRAMEBUFFER, to.fbo);
+        GlStateManager._glBindFramebuffer(GL30.GL_READ_FRAMEBUFFER, from.frameBufferId);
+        GlStateManager._glBindFramebuffer(GL30.GL_DRAW_FRAMEBUFFER, to.frameBufferId);
         GlStateManager._glBlitFrameBuffer(0, 0, width, height, 0, 0, width, height, GL11.GL_COLOR_BUFFER_BIT,
                 GL11.GL_NEAREST);
-        SaturnClient.client.getFramebuffer().beginWrite(false);
+        SaturnClient.client.getMainRenderTarget().bindWrite(false);
         return to;
     }
 }

src/main/java/org/saturnclient/impl/ui/RenderScopeImpl.java

@@ -28,32 +28,32 @@ import org.saturnclient.ui.RenderScope;
 import org.saturnclient.ui.resources.Fonts;
 import org.saturnclient.ui.resources.SvgTexture;
 
-import net.minecraft.client.gl.RenderPipelines;
-import net.minecraft.client.gui.DrawContext;
-import net.minecraft.client.gui.ScreenRect;
-import net.minecraft.client.gui.render.state.ColoredQuadGuiElementRenderState;
+import net.minecraft.client.renderer.RenderPipelines;
+import net.minecraft.client.gui.GuiGraphics;
+import net.minecraft.client.gui.navigation.ScreenRectangle;
+import net.minecraft.client.gui.render.state.ColoredRectangleRenderState;
 import net.minecraft.client.gui.render.state.GuiRenderState;
-import net.minecraft.client.gui.render.state.ItemGuiElementRenderState;
-import net.minecraft.client.gui.render.state.TextGuiElementRenderState;
-import net.minecraft.client.gui.render.state.TexturedQuadGuiElementRenderState;
-import net.minecraft.client.gui.render.state.special.EntityGuiElementRenderState;
-import net.minecraft.client.render.entity.state.EntityRenderState;
+import net.minecraft.client.gui.render.state.GuiItemRenderState;
+import net.minecraft.client.gui.render.state.GuiTextRenderState;
+import net.minecraft.client.gui.render.state.BlitRenderState;
+import net.minecraft.client.gui.render.state.pip.GuiEntityRenderState;
+import net.minecraft.client.renderer.entity.state.EntityRenderState;
 //? if >=1.21.7 {
-import net.minecraft.client.render.item.KeyedItemRenderState;
+import net.minecraft.client.renderer.item.TrackingItemStackRenderState;
 //?} else
-//import net.minecraft.client.render.item.ItemRenderState;
-import net.minecraft.client.texture.AbstractTexture;
-import net.minecraft.client.texture.Sprite;
-import net.minecraft.client.texture.TextureSetup;
-import net.minecraft.entity.LivingEntity;
-import net.minecraft.item.ItemDisplayContext;
-import net.minecraft.item.ItemStack;
-import net.minecraft.text.Text;
-import net.minecraft.util.Identifier;
-import net.minecraft.util.crash.CrashException;
-import net.minecraft.util.crash.CrashReport;
-import net.minecraft.util.crash.CrashReportSection;
-import net.minecraft.world.World;
+//import net.minecraft.client.renderer.item.ItemStackRenderState;
+import net.minecraft.client.renderer.texture.AbstractTexture;
+import net.minecraft.client.renderer.texture.TextureAtlasSprite;
+import net.minecraft.client.gui.render.TextureSetup;
+import net.minecraft.world.entity.LivingEntity;
+import net.minecraft.world.item.ItemDisplayContext;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.network.chat.Component;
+import net.minecraft.resources.Identifier;
+import net.minecraft.ReportedException;
+import net.minecraft.CrashReport;
+import net.minecraft.CrashReportCategory;
+import net.minecraft.world.level.Level;
 
 public class RenderScopeImpl implements RenderScope {
 
@@ -65,8 +65,8 @@ public class RenderScopeImpl implements RenderScope {
     // The glass blurs made for this scope's frame
     private final Set<Integer> capturedBlurs = new HashSet<>();
 
-    public RenderScopeImpl(DrawContext context) {
-        this(context.getMatrices(), ((DrawContextAccessor) (Object) context).getState());
+    public RenderScopeImpl(GuiGraphics context) {
+        this(context.pose(), ((DrawContextAccessor) (Object) context).getState());
     }
 
     public RenderScopeImpl(Matrix3x2fStack matrices, GuiRenderState state) {
@@ -95,10 +95,10 @@ public class RenderScopeImpl implements RenderScope {
 
     @Override
     public void fill(int x1, int y1, int x2, int y2, int color) {
-        this.state.addSimpleElement(
-                new ColoredQuadGuiElementRenderState(
+        this.state.submitGuiElement(
+                new ColoredRectangleRenderState(
                         RenderPipelines.GUI,
-                        TextureSetup.empty(),
+                        TextureSetup.noTexture(),
                         new Matrix3x2f(this.matrices.stack),
                         x1, y1, x2, y2, color, color,
                         this.scissorStack.peekLast()));
@@ -149,10 +149,10 @@ public class RenderScopeImpl implements RenderScope {
             matrices.translate(x, y + (lineIndex * Fonts.getHeight()));
             matrices.scale(scale, scale);
 
-            this.state.addText(
-                    new TextGuiElementRenderState(
-                            SaturnClient.client.textRenderer,
-                            ((Text) Fonts.setFont(line, font)).asOrderedText(),
+            this.state.submitText(
+                    new GuiTextRenderState(
+                            SaturnClient.client.font,
+                            ((Component) Fonts.setFont(line, font)).getVisualOrderText(),
                             new Matrix3x2f(this.matrices.stack),
                             0, font == 0 ? 1 : 8,
                             //? if >=1.21.11 {
@@ -168,12 +168,12 @@ public class RenderScopeImpl implements RenderScope {
 
     @Override
     public int getScaledWindowWidth() {
-        return SaturnClient.client.getWindow().getScaledWidth();
+        return SaturnClient.client.getWindow().getGuiScaledWidth();
     }
 
     @Override
     public int getScaledWindowHeight() {
-        return SaturnClient.client.getWindow().getScaledHeight();
+        return SaturnClient.client.getWindow().getGuiScaledHeight();
     }
 
     // Texture rendering
@@ -217,17 +217,17 @@ public class RenderScopeImpl implements RenderScope {
         }
 
         GpuTextureView gpuTextureView = SaturnClient.client.getTextureManager()
-                .getTexture(sprite).getGlTextureView();
+                .getTexture(sprite).getTextureView();
 
         //? if >=1.21.11
         AbstractTexture abstractTexture = SaturnClient.client.getTextureManager().getTexture(sprite);
 
-        this.state.addSimpleElement(new TexturedQuadGuiElementRenderState(
+        this.state.submitGuiElement(new BlitRenderState(
                 RenderPipelines.GUI_TEXTURED,
                 //? if >=1.21.11 {
-                TextureSetup.of(gpuTextureView, abstractTexture.getSampler()),
+                TextureSetup.singleTexture(gpuTextureView, abstractTexture.getSampler()),
                 //?} else
-                //TextureSetup.withoutGlTexture(gpuTextureView),
+                //TextureSetup.singleTexture(gpuTextureView),
                 new Matrix3x2f(this.matrices.stack),
                 x1, y1, x2, y2, u1, u2, v1, v2, color,
                 this.scissorStack.peekLast()));
@@ -244,7 +244,7 @@ public class RenderScopeImpl implements RenderScope {
         }
 
         AbstractTexture maskTexture = SaturnClient.client.getTextureManager().getTexture((Identifier) (Object) mask);
-        this.state.addSimpleElement(new TexturedQuadGuiElementRenderState(
+        this.state.submitGuiElement(new BlitRenderState(
                 GlassRenderer.PIPELINE,
                 GlassRenderer.textures(maskTexture, blur),
                 new Matrix3x2f(this.matrices.stack),
@@ -255,7 +255,7 @@ public class RenderScopeImpl implements RenderScope {
     // Scissor management
     @Override
     public void enableScissor(int x1, int y1, int x2, int y2) {
-        ScreenRect rect = new ScreenRect(x1, y1, x2 - x1, y2 - y1).transform(this.matrices.stack);
+        ScreenRectangle rect = new ScreenRectangle(x1, y1, x2 - x1, y2 - y1).transformAxisAligned(this.matrices.stack);
         scissorStack.push(rect);
     }
 
@@ -270,12 +270,12 @@ public class RenderScopeImpl implements RenderScope {
     }
 
     public static class ScissorStack {
-        private final Deque<ScreenRect> stack = new ArrayDeque<>();
+        private final Deque<ScreenRectangle> stack = new ArrayDeque<>();
 
-        public ScreenRect push(ScreenRect rect) {
-            ScreenRect last = stack.peekLast();
+        public ScreenRectangle push(ScreenRectangle rect) {
+            ScreenRectangle last = stack.peekLast();
             if (last != null) {
-                ScreenRect intersection = Objects.requireNonNullElse(rect.intersection(last), ScreenRect.empty());
+                ScreenRectangle intersection = Objects.requireNonNullElse(rect.intersection(last), ScreenRectangle.empty());
                 stack.addLast(intersection);
                 return intersection;
             } else {
@@ -285,7 +285,7 @@ public class RenderScopeImpl implements RenderScope {
         }
 
         @Nullable
-        public ScreenRect pop() {
+        public ScreenRectangle pop() {
             if (stack.isEmpty())
                 throw new IllegalStateException("Scissor stack underflow");
             stack.removeLast();
@@ -293,48 +293,51 @@ public class RenderScopeImpl implements RenderScope {
         }
 
         @Nullable
-        public ScreenRect peekLast() {
+        public ScreenRectangle peekLast() {
             return stack.peekLast();
         }
 
         public boolean contains(int x, int y) {
-            return stack.isEmpty() || stack.peekLast().contains(x, y);
+            return stack.isEmpty() || stack.peekLast().containsPoint(x, y);
         }
     }
 
     // Item rendering
     @Override
     public void drawItem(ItemStackRef stack, int x, int y) {
-        drawItem(null, SaturnClient.client.world, stack, x, y, 0);
+        drawItem(null, SaturnClient.client.level, stack, x, y, 0);
     }
 
-    private void drawItem(@Nullable LivingEntity entity, @Nullable World world, ItemStackRef stack, int x, int y,
+    private void drawItem(@Nullable LivingEntity entity, @Nullable Level world, ItemStackRef stack, int x, int y,
             int seed) {
         drawItem(entity, world, (ItemStack) (Object) stack, x, y, seed, 0);
     }
 
-    private void drawItem(@Nullable LivingEntity entity, @Nullable World world, ItemStack stack, int x, int y, int seed,
+    private void drawItem(@Nullable LivingEntity entity, @Nullable Level world, ItemStack stack, int x, int y, int seed,
             int z) {
         if (!stack.isEmpty()) {
             //? if >=1.21.7 {
-            KeyedItemRenderState keyedItemRenderState = new KeyedItemRenderState();
+            TrackingItemStackRenderState keyedItemRenderState = new TrackingItemStackRenderState();
             //?} else
-            //ItemRenderState keyedItemRenderState = new ItemRenderState();
-            SaturnClient.client.getItemModelManager().clearAndUpdate(keyedItemRenderState, stack,
+            //ItemStackRenderState keyedItemRenderState = new ItemStackRenderState();
+            SaturnClient.client.getItemModelResolver().updateForTopItem(keyedItemRenderState, stack,
                     ItemDisplayContext.GUI, world,
                     entity, seed);
 
             try {
-                this.state.addItem(new ItemGuiElementRenderState(stack.getItem().getName().toString(),
+                //? if >=26.1 {
+                /*this.state.submitItem(new GuiItemRenderState(
+                *///?} else
+                this.state.submitItem(new GuiItemRenderState(stack.getItem().getName().toString(),
                         new Matrix3x2f(this.matrices.stack), keyedItemRenderState, x, y,
                         this.scissorStack.peekLast()));
             } catch (Throwable throwable) {
-                CrashReport crashReport = CrashReport.create(throwable, "Rendering item");
-                CrashReportSection crashReportSection = crashReport.addElement("Item being rendered");
-                crashReportSection.add("Item Type", () -> String.valueOf(stack.getItem()));
-                crashReportSection.add("Item Components", () -> String.valueOf(stack.getComponents()));
-                crashReportSection.add("Item Foil", () -> String.valueOf(stack.hasGlint()));
-                throw new CrashException(crashReport);
+                CrashReport crashReport = CrashReport.forThrowable(throwable, "Rendering item");
+                CrashReportCategory crashReportSection = crashReport.addCategory("Item being rendered");
+                crashReportSection.setDetail("Item Type", () -> String.valueOf(stack.getItem()));
+                crashReportSection.setDetail("Item Components", () -> String.valueOf(stack.getComponents()));
+                crashReportSection.setDetail("Item Foil", () -> String.valueOf(stack.hasFoil()));
+                throw new ReportedException(crashReport);
             }
         }
     }
@@ -346,12 +349,12 @@ public class RenderScopeImpl implements RenderScope {
 
     @Override
     public void drawSpriteStretched(SpriteRef sprite, int x, int y, int width, int height, int color) {
-        Sprite mcSprite = (Sprite) sprite;
+        TextureAtlasSprite mcSprite = (TextureAtlasSprite) sprite;
         if (color == 0 || width == 0 || height == 0)
             return;
 
-        drawTexturedQuad(mcSprite.getAtlasId(), x, x + width, y, y + height,
-                mcSprite.getMinU(), mcSprite.getMaxU(), mcSprite.getMinV(), mcSprite.getMaxV(), color);
+        drawTexturedQuad(mcSprite.atlasLocation(), x, x + width, y, y + height,
+                mcSprite.getU0(), mcSprite.getU1(), mcSprite.getV0(), mcSprite.getV1(), color);
     }
 
     @Override
@@ -382,7 +385,7 @@ public class RenderScopeImpl implements RenderScope {
 
         float adjustedScale = scale * scaleX; // apply matrix scale to entity scale too
 
-        this.state.addSpecialElement(new EntityGuiElementRenderState(entityState, translation, rotation,
+        this.state.submitPicturesInPictureState(new GuiEntityRenderState(entityState, translation, rotation,
                 overrideCameraAngle, adjustedX1, adjustedY1, adjustedX2, adjustedY2, adjustedScale,
                 this.scissorStack.peekLast()));
     }
@@ -410,57 +413,57 @@ import org.saturnclient.ui.RenderScope;
 import org.saturnclient.ui.resources.Fonts;
 import org.saturnclient.ui.resources.SvgTexture;
 
-import net.minecraft.client.font.TextRenderer;
-import net.minecraft.client.font.TextRenderer.TextLayerType;
-import net.minecraft.client.gui.DrawContext;
-import net.minecraft.client.gui.ScreenRect;
-import net.minecraft.client.render.DiffuseLighting;
-import net.minecraft.client.render.OverlayTexture;
-import net.minecraft.client.render.RenderLayer;
-import net.minecraft.client.render.VertexConsumer;
-import net.minecraft.client.render.VertexConsumerProvider;
-import net.minecraft.client.render.item.ItemRenderState;
-import net.minecraft.client.texture.Sprite;
-import net.minecraft.client.util.Window;
-import net.minecraft.client.util.math.MatrixStack;
-import net.minecraft.entity.LivingEntity;
+import net.minecraft.client.gui.Font;
+import net.minecraft.client.gui.Font.DisplayMode;
+import net.minecraft.client.gui.GuiGraphics;
+import net.minecraft.client.gui.navigation.ScreenRectangle;
+import com.mojang.blaze3d.platform.Lighting;
+import net.minecraft.client.renderer.texture.OverlayTexture;
+import net.minecraft.client.renderer.RenderType;
+import com.mojang.blaze3d.vertex.VertexConsumer;
+import net.minecraft.client.renderer.MultiBufferSource;
+import net.minecraft.client.renderer.item.ItemStackRenderState;
+import net.minecraft.client.renderer.texture.TextureAtlasSprite;
+import com.mojang.blaze3d.platform.Window;
+import com.mojang.blaze3d.vertex.PoseStack;
+import net.minecraft.world.entity.LivingEntity;
 //? if >=1.21.5
-import net.minecraft.item.ItemDisplayContext;
+import net.minecraft.world.item.ItemDisplayContext;
 //? if <1.21.5
-//import net.minecraft.item.ModelTransformationMode;
-import net.minecraft.item.ItemStack;
+//import net.minecraft.world.item.ItemDisplayContext;
+import net.minecraft.world.item.ItemStack;
 
-import net.minecraft.text.Text;
-import net.minecraft.util.Identifier;
-import net.minecraft.util.crash.CrashException;
-import net.minecraft.util.crash.CrashReport;
-import net.minecraft.util.crash.CrashReportSection;
-import net.minecraft.world.World;
+import net.minecraft.network.chat.Component;
+import net.minecraft.resources.Identifier;
+import net.minecraft.ReportedException;
+import net.minecraft.CrashReport;
+import net.minecraft.CrashReportCategory;
+import net.minecraft.world.level.Level;
 
 public class RenderScopeImpl implements RenderScope {
     // ----------------------------
     // Fields
     // ----------------------------
-    public MatrixStack matrices;
-    public VertexConsumerProvider.Immediate vertexConsumers;
+    public PoseStack matrices;
+    public MultiBufferSource.BufferSource vertexConsumers;
     private ScissorStack scissorStack = new ScissorStack();
     private int opacity = 255 << 24;
     // The glass blurs made for this scope's frame
     private final Set<Integer> capturedBlurs = new HashSet<>();
-    private final ItemRenderState itemRenderState;
+    private final ItemStackRenderState itemRenderState;
 
     // ----------------------------
     // Constructors
     // ----------------------------
-    public RenderScopeImpl(DrawContext context) {
-        this(context.getMatrices(), ((DrawContextAccessor) context).getVertexConsumers());
+    public RenderScopeImpl(GuiGraphics context) {
+        this(context.pose(), ((DrawContextAccessor) context).getVertexConsumers());
     }
 
-    public RenderScopeImpl(MatrixStack matrices, VertexConsumerProvider.Immediate vertexConsumers) {
+    public RenderScopeImpl(PoseStack matrices, MultiBufferSource.BufferSource vertexConsumers) {
         this.matrices = matrices;
         this.vertexConsumers = vertexConsumers;
         this.scissorStack = new ScissorStack();
-        this.itemRenderState = new ItemRenderState();
+        this.itemRenderState = new ItemStackRenderState();
     }
 
     // ----------------------------
@@ -492,22 +495,22 @@ public class RenderScopeImpl implements RenderScope {
     // ----------------------------
     @Override
     public void draw() {
-        this.vertexConsumers.draw();
+        this.vertexConsumers.endBatch();
     }
 
     @Override
     public int getScaledWindowWidth() {
-        return SaturnClient.client.getWindow().getScaledWidth();
+        return SaturnClient.client.getWindow().getGuiScaledWidth();
     }
 
     @Override
     public int getScaledWindowHeight() {
-        return SaturnClient.client.getWindow().getScaledHeight();
+        return SaturnClient.client.getWindow().getGuiScaledHeight();
     }
 
-    public void draw(Consumer<VertexConsumerProvider> drawer) {
+    public void draw(Consumer<MultiBufferSource> drawer) {
         drawer.accept(this.vertexConsumers);
-        this.vertexConsumers.draw();
+        this.vertexConsumers.endBatch();
     }
 
     // ----------------------------
@@ -519,7 +522,7 @@ public class RenderScopeImpl implements RenderScope {
             return;
         color = getColor(color);
 
-        Matrix4f matrix4f = this.matrices.peek().getPositionMatrix();
+        Matrix4f matrix4f = this.matrices.last().pose();
 
         int x1 = x;
         int x2 = x + width;
@@ -537,11 +540,11 @@ public class RenderScopeImpl implements RenderScope {
             y2 = tmp;
         }
 
-        VertexConsumer vertexConsumer = this.vertexConsumers.getBuffer(RenderLayer.getGui());
-        vertexConsumer.vertex(matrix4f, x1, y1, 0).color(color);
-        vertexConsumer.vertex(matrix4f, x1, y2, 0).color(color);
-        vertexConsumer.vertex(matrix4f, x2, y2, 0).color(color);
-        vertexConsumer.vertex(matrix4f, x2, y1, 0).color(color);
+        VertexConsumer vertexConsumer = this.vertexConsumers.getBuffer(RenderType.gui());
+        vertexConsumer.addVertex(matrix4f, x1, y1, 0).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x1, y2, 0).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x2, y2, 0).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x2, y1, 0).setColor(color);
     }
 
     @Override
@@ -550,15 +553,15 @@ public class RenderScopeImpl implements RenderScope {
     }
 
     public void fill(int x1, int y1, int x2, int y2, int z, int color) {
-        fill(RenderLayer.getGui(), x1, y1, x2, y2, z, color);
+        fill(RenderType.gui(), x1, y1, x2, y2, z, color);
     }
 
-    public void fill(RenderLayer layer, int x1, int y1, int x2, int y2, int color) {
+    public void fill(RenderType layer, int x1, int y1, int x2, int y2, int color) {
         fill(layer, x1, y1, x2, y2, 0, color);
     }
 
-    public void fill(RenderLayer layer, int x1, int y1, int x2, int y2, int z, int color) {
-        Matrix4f matrix4f = this.matrices.peek().getPositionMatrix();
+    public void fill(RenderType layer, int x1, int y1, int x2, int y2, int z, int color) {
+        Matrix4f matrix4f = this.matrices.last().pose();
         if (x1 < x2) {
             int tmp = x1;
             x1 = x2;
@@ -571,10 +574,10 @@ public class RenderScopeImpl implements RenderScope {
         }
 
         VertexConsumer vertexConsumer = this.vertexConsumers.getBuffer(layer);
-        vertexConsumer.vertex(matrix4f, x1, y1, z).color(color);
-        vertexConsumer.vertex(matrix4f, x1, y2, z).color(color);
-        vertexConsumer.vertex(matrix4f, x2, y2, z).color(color);
-        vertexConsumer.vertex(matrix4f, x2, y1, z).color(color);
+        vertexConsumer.addVertex(matrix4f, x1, y1, z).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x1, y2, z).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x2, y2, z).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x2, y1, z).setColor(color);
     }
 
     @Override
@@ -603,13 +606,13 @@ public class RenderScopeImpl implements RenderScope {
         int i = 0;
         for (String line : text.split("\n")) {
             color = getColor(color);
-            matrices.push();
+            matrices.pushPose();
             matrices.translate(x, y + i * Fonts.getHeight(), 0);
             matrices.scale(scale, scale, 1.0f);
-            TextRenderer textRenderer = SaturnClient.client.textRenderer;
-            textRenderer.draw((Text) Fonts.setFont(line, font), 0, font == 0 ? 1 : 7, color, false,
-                    matrices.peek().getPositionMatrix(), vertexConsumers, TextLayerType.NORMAL, 0, 15728880);
-            matrices.pop();
+            Font textRenderer = SaturnClient.client.font;
+            textRenderer.drawInBatch((Component) Fonts.setFont(line, font), 0, font == 0 ? 1 : 7, color, false,
+                    matrices.last().pose(), vertexConsumers, DisplayMode.NORMAL, 0, 15728880);
+            matrices.popPose();
             i++;
         }
     }
@@ -648,12 +651,12 @@ public class RenderScopeImpl implements RenderScope {
 
     @Override
     public void drawSpriteStretched(SpriteRef saturnSprite, int x, int y, int width, int height, int color) {
-        Sprite sprite = (Sprite) saturnSprite;
+        TextureAtlasSprite sprite = (TextureAtlasSprite) saturnSprite;
         if (color == 0)
             return;
         if (width != 0 && height != 0) {
-            drawTexturedQuad(sprite.getAtlasId(), x, x + width, y, y + height,
-                    sprite.getMinU(), sprite.getMaxU(), sprite.getMinV(), sprite.getMaxV(), color);
+            drawTexturedQuad(sprite.atlasLocation(), x, x + width, y, y + height,
+                    sprite.getU0(), sprite.getU1(), sprite.getV0(), sprite.getV1(), color);
         }
     }
 
@@ -672,18 +675,18 @@ public class RenderScopeImpl implements RenderScope {
         y2 *= 4;
         color = getColor(color);
 
-        matrices.push();
+        matrices.pushPose();
         matrices.scale(0.25f, 0.25f, 1.0f);
         //? if <1.21.5
         //RenderSystem.setShaderTexture(0, sprite);
-        RenderLayer renderLayer = RenderLayer.getGuiTextured(sprite);
-        Matrix4f matrix4f = matrices.peek().getPositionMatrix();
+        RenderType renderLayer = RenderType.guiTextured(sprite);
+        Matrix4f matrix4f = matrices.last().pose();
         VertexConsumer vertexConsumer = vertexConsumers.getBuffer(renderLayer);
-        vertexConsumer.vertex(matrix4f, x1, y1, 0).texture(u1, v1).color(color);
-        vertexConsumer.vertex(matrix4f, x1, y2, 0).texture(u1, v2).color(color);
-        vertexConsumer.vertex(matrix4f, x2, y2, 0).texture(u2, v2).color(color);
-        vertexConsumer.vertex(matrix4f, x2, y1, 0).texture(u2, v1).color(color);
-        matrices.pop();
+        vertexConsumer.addVertex(matrix4f, x1, y1, 0).setUv(u1, v1).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x1, y2, 0).setUv(u1, v2).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x2, y2, 0).setUv(u2, v2).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x2, y1, 0).setUv(u2, v1).setColor(color);
+        matrices.popPose();
     }
 
     @Override
@@ -702,15 +705,15 @@ public class RenderScopeImpl implements RenderScope {
         int y1 = y * 4;
         int y2 = (y + height) * 4;
 
-        matrices.push();
+        matrices.pushPose();
         matrices.scale(0.25f, 0.25f, 1.0f);
-        Matrix4f matrix4f = matrices.peek().getPositionMatrix();
+        Matrix4f matrix4f = matrices.last().pose();
         VertexConsumer vertexConsumer = vertexConsumers.getBuffer(GlassRenderer.getLayer((Identifier) (Object) mask, blur));
-        vertexConsumer.vertex(matrix4f, x1, y1, 0).texture(0, 0).color(color);
-        vertexConsumer.vertex(matrix4f, x1, y2, 0).texture(0, 1).color(color);
-        vertexConsumer.vertex(matrix4f, x2, y2, 0).texture(1, 1).color(color);
-        vertexConsumer.vertex(matrix4f, x2, y1, 0).texture(1, 0).color(color);
-        matrices.pop();
+        vertexConsumer.addVertex(matrix4f, x1, y1, 0).setUv(0, 0).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x1, y2, 0).setUv(0, 1).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x2, y2, 0).setUv(1, 1).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x2, y1, 0).setUv(1, 0).setColor(color);
+        matrices.popPose();
     }
 
     // ----------------------------
@@ -718,55 +721,55 @@ public class RenderScopeImpl implements RenderScope {
     // ----------------------------
     @Override
     public void drawItem(ItemStackRef item, int x, int y) {
-        drawItem(SaturnClient.client.player, SaturnClient.client.world, item, x, y, 0);
+        drawItem(SaturnClient.client.player, SaturnClient.client.level, item, x, y, 0);
     }
 
-    private void drawItem(@Nullable LivingEntity entity, @Nullable World world, ItemStackRef stack, int x, int y,
+    private void drawItem(@Nullable LivingEntity entity, @Nullable Level world, ItemStackRef stack, int x, int y,
             int seed) {
         drawItem(entity, world, (ItemStack) (Object) stack, x, y, seed, 0);
     }
 
-    private void drawItem(@Nullable LivingEntity entity, @Nullable World world, ItemStack stack, int x, int y, int seed,
+    private void drawItem(@Nullable LivingEntity entity, @Nullable Level world, ItemStack stack, int x, int y, int seed,
             int z) {
         if (stack.isEmpty())
             return;
 
         //? if >=1.21.5
-        SaturnClient.client.getItemModelManager().update(itemRenderState, stack, ItemDisplayContext.GUI, world, entity, seed);
+        SaturnClient.client.getItemModelResolver().appendItemLayers(itemRenderState, stack, ItemDisplayContext.GUI, world, entity, seed);
         //? if >=1.21.5
-        SaturnClient.client.getItemModelManager().clearAndUpdate(this.itemRenderState, stack, ItemDisplayContext.GUI, world, entity, seed);
+        SaturnClient.client.getItemModelResolver().updateForTopItem(this.itemRenderState, stack, ItemDisplayContext.GUI, world, entity, seed);
         //? if <1.21.5
-        //SaturnClient.client.getItemModelManager().update(itemRenderState, stack, ModelTransformationMode.GUI, false, world, entity, seed);
+        //SaturnClient.client.getItemModelResolver().updateForTopItem(itemRenderState, stack, ItemDisplayContext.GUI, false, world, entity, seed);
 
-        this.matrices.push();
+        this.matrices.pushPose();
         //? if >=1.21.5
         this.matrices.translate((float) (x + 8), (float) (y + 8), (float) (150 + z));
         //? if <1.21.5
-        //this.matrices.translate(x + 8, y + 8, 150 + (itemRenderState.hasDepth() ? z : 0));
+        //this.matrices.translate(x + 8, y + 8, 150 + (itemRenderState.isGui3d() ? z : 0));
 
         try {
             this.matrices.scale(16.0F, -16.0F, 16.0F);
-            boolean bl = !this.itemRenderState.isSideLit();
+            boolean bl = !this.itemRenderState.usesBlockLight();
             if (bl) {
                 this.draw();
-                DiffuseLighting.disableGuiDepthLighting();
+                Lighting.setupForFlatItems();
             }
 
-            this.itemRenderState.render(this.matrices, this.vertexConsumers, 15728880, OverlayTexture.DEFAULT_UV);
+            this.itemRenderState.render(this.matrices, this.vertexConsumers, 15728880, OverlayTexture.NO_OVERLAY);
             this.draw();
             if (bl) {
-                DiffuseLighting.enableGuiDepthLighting();
+                Lighting.setupFor3DItems();
             }
         } catch (Throwable throwable) {
-            CrashReport crashReport = CrashReport.create(throwable, "Rendering item");
-            CrashReportSection crashReportSection = crashReport.addElement("Item being rendered");
-            crashReportSection.add("Item Type", () -> String.valueOf(stack.getItem()));
-            crashReportSection.add("Item Components", () -> String.valueOf(stack.getComponents()));
-            crashReportSection.add("Item Foil", () -> String.valueOf(stack.hasGlint()));
-            throw new CrashException(crashReport);
+            CrashReport crashReport = CrashReport.forThrowable(throwable, "Rendering item");
+            CrashReportCategory crashReportSection = crashReport.addCategory("Item being rendered");
+            crashReportSection.setDetail("Item Type", () -> String.valueOf(stack.getItem()));
+            crashReportSection.setDetail("Item Components", () -> String.valueOf(stack.getComponents()));
+            crashReportSection.setDetail("Item Foil", () -> String.valueOf(stack.hasFoil()));
+            throw new ReportedException(crashReport);
         }
 
-        this.matrices.pop();
+        this.matrices.popPose();
     }
 
     // ----------------------------
@@ -774,8 +777,8 @@ public class RenderScopeImpl implements RenderScope {
     // ----------------------------
     @Override
     public void enableScissor(int x1, int y1, int x2, int y2) {
-        ScreenRect screenRect = new ScreenRect(x1, y1, x2 - x1, y2 - y1)
-                .transform(matrices.peek().getPositionMatrix());
+        ScreenRectangle screenRect = new ScreenRectangle(x1, y1, x2 - x1, y2 - y1)
+                .transformAxisAligned(matrices.last().pose());
         setScissor(scissorStack.push(screenRect));
     }
 
@@ -789,15 +792,15 @@ public class RenderScopeImpl implements RenderScope {
         return scissorStack.containsPoint(x, y);
     }
 
-    private void setScissor(@Nullable ScreenRect rect) {
+    private void setScissor(@Nullable ScreenRectangle rect) {
         draw();
         if (rect != null) {
             Window window = SaturnClient.client.getWindow();
-            int framebufferHeight = window.getFramebufferHeight();
-            double scaleFactor = window.getScaleFactor();
+            int framebufferHeight = window.getHeight();
+            double scaleFactor = window.getGuiScale();
             RenderSystem.enableScissor(
-                    (int) (rect.getLeft() * scaleFactor),
-                    (int) (framebufferHeight - rect.getBottom() * scaleFactor),
+                    (int) (rect.left() * scaleFactor),
+                    (int) (framebufferHeight - rect.bottom() * scaleFactor),
                     Math.max(0, (int) (rect.width() * scaleFactor)),
                     Math.max(0, (int) (rect.height() * scaleFactor)));
         } else {
@@ -806,13 +809,13 @@ public class RenderScopeImpl implements RenderScope {
     }
 
     static class ScissorStack {
-        private final Deque<ScreenRect> stack = new ArrayDeque<>();
+        private final Deque<ScreenRectangle> stack = new ArrayDeque<>();
 
-        public ScreenRect push(ScreenRect p_281812_) {
-            ScreenRect screenrectangle = this.stack.peekLast();
+        public ScreenRectangle push(ScreenRectangle p_281812_) {
+            ScreenRectangle screenrectangle = this.stack.peekLast();
             if (screenrectangle != null) {
-                ScreenRect screenrectangle1 = Objects.requireNonNullElse(p_281812_.intersection(screenrectangle),
-                        ScreenRect.empty());
+                ScreenRectangle screenrectangle1 = Objects.requireNonNullElse(p_281812_.intersection(screenrectangle),
+                        ScreenRectangle.empty());
                 this.stack.addLast(screenrectangle1);
                 return screenrectangle1;
             } else {
@@ -822,7 +825,7 @@ public class RenderScopeImpl implements RenderScope {
         }
 
         @Nullable
-        public ScreenRect pop() {
+        public ScreenRectangle pop() {
             if (this.stack.isEmpty()) {
                 throw new IllegalStateException("Scissor stack underflow");
             } else {
@@ -832,7 +835,7 @@ public class RenderScopeImpl implements RenderScope {
         }
 
         public boolean containsPoint(int p_329411_, int p_333404_) {
-            return this.stack.isEmpty() ? true : this.stack.peek().contains(p_329411_, p_333404_);
+            return this.stack.isEmpty() ? true : this.stack.peek().containsPoint(p_329411_, p_333404_);
         }
     }
 }

src/main/java/org/saturnclient/impl/ui/SaturnScreenFabric.java

@@ -4,71 +4,80 @@ import java.time.Duration;
 import java.time.Instant;
 
 import org.saturnclient.config.Config;
+import org.saturnclient.impl.provider.Keys;
 import org.saturnclient.ui.RenderScope;
 import org.saturnclient.ui.SaturnScreen;
 import org.saturnclient.ui.SaturnScreen.ScreenProvider;
 
-import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.Minecraft;
 //? if >=1.21.9
-import net.minecraft.client.gui.Click;
-import net.minecraft.client.gui.CubeMapRenderer;
-import net.minecraft.client.gui.DrawContext;
-import net.minecraft.client.gui.RotatingCubeMapRenderer;
-import net.minecraft.client.gui.screen.Screen;
+import net.minecraft.client.input.MouseButtonEvent;
+import net.minecraft.client.renderer.CubeMap;
+import net.minecraft.client.gui.GuiGraphics;
+//? if >=26.1 {
+/*import net.minecraft.client.renderer.Panorama;
+*///?} else
+import net.minecraft.client.renderer.PanoramaRenderer;
+import net.minecraft.client.gui.screens.Screen;
 //? if >=1.21.6 {
-import net.minecraft.client.texture.CubemapTexture;
+import net.minecraft.client.renderer.texture.CubeMapTexture;
 //?} else {
-/*import net.minecraft.client.texture.ResourceTexture;
-import net.minecraft.client.texture.TextureManager;
+/*import net.minecraft.client.renderer.texture.SimpleTexture;
+import net.minecraft.client.renderer.texture.TextureManager;
 *///?}
 //? if >=1.21.9
-import net.minecraft.client.input.KeyInput;
+import net.minecraft.client.input.KeyEvent;
 //? if <1.21.6 {
-/*import net.minecraft.client.gl.PostEffectProcessor;
-import net.minecraft.client.render.DefaultFramebufferSet;
-import net.minecraft.client.util.Pool;
+/*import net.minecraft.client.renderer.PostChain;
+import net.minecraft.client.renderer.LevelTargetBundle;
+import com.mojang.blaze3d.resource.CrossFrameResourcePool;
 *///?}
-import net.minecraft.text.Text;
-import net.minecraft.util.Identifier;
+import net.minecraft.network.chat.Component;
+import net.minecraft.resources.Identifier;
 
 public class SaturnScreenFabric extends Screen implements ScreenProvider {
-    protected static final Identifier PANORAMA = Identifier.of("saturnclient",
+    protected static final Identifier PANORAMA = Identifier.fromNamespaceAndPath("saturnclient",
             "textures/gui/title/background/panorama");
-    protected static final CubeMapRenderer PANORAMA_RENDERER = new CubeMapRenderer(PANORAMA);
+    public static final CubeMap PANORAMA_RENDERER = new CubeMap(PANORAMA);
 
-    public static final RotatingCubeMapRenderer ROTATING_PANORAMA_RENDERER;
+    // From 26.1 vanilla draws the panorama from its own cube map; GuiRendererMixin swaps in Saturn's.
+    //? if >=26.1 {
+    /*public static final Panorama ROTATING_PANORAMA_RENDERER = new Panorama();
+    *///?} else {
+    public static final PanoramaRenderer ROTATING_PANORAMA_RENDERER;
 
     static {
-        ROTATING_PANORAMA_RENDERER = new RotatingCubeMapRenderer(PANORAMA_RENDERER);
+        ROTATING_PANORAMA_RENDERER = new PanoramaRenderer(PANORAMA_RENDERER);
     }
+    //?}
 
     //? if <1.21.6
-    //private final Pool pool = new Pool(3);
+    //private final CrossFrameResourcePool pool = new CrossFrameResourcePool(3);
     public final SaturnScreen screen;
 
     /** Whether the panorama's textures are loaded; it isn't drawn before (e.g. under the splash). */
     private static volatile boolean panoramaReady = false;
 
-    public static void preload(MinecraftClient client) {
+    public static void preload(Minecraft client) {
         //? if >=1.21.6 {
         // From 1.21.6 CubeMapRenderer draws from one cube map texture made of panorama_0..5.png.
         // CubeMapRenderer.registerTextures only stores it for the next resource reload, which has
         // already happened by now, so register it through the overload that loads it right away.
-        client.getTextureManager().registerTexture(PANORAMA, new CubemapTexture(PANORAMA));
+        client.getTextureManager().registerAndLoad(PANORAMA, new CubeMapTexture(PANORAMA));
         //?} else {
         /*TextureManager textureManager = client.getTextureManager();
         for (int i = 0; i < 6; i++) {
             String var10001 = PANORAMA.getPath();
             Identifier tex = PANORAMA.withPath(var10001 + "_" + i + ".png");
-            ResourceTexture resourceTexture = new ResourceTexture(tex);
-            textureManager.registerTexture(tex, resourceTexture);
+            SimpleTexture resourceTexture = new SimpleTexture(tex);
+            textureManager.registerAndLoad(tex, resourceTexture);
         }
         *///?}
         panoramaReady = true;
     }
 
     public SaturnScreenFabric(SaturnScreen screen) {
-        super(Text.literal(screen.title));
+        super(Component.literal(screen.title));
         screen.provider = this;
         this.screen = screen;
     }
@@ -81,7 +90,10 @@ public class SaturnScreenFabric extends Screen implements ScreenProvider {
     //? if <1.21.6
     //@SuppressWarnings("deprecation")
     @Override
-    public void render(DrawContext context, int mouseX, int mouseY, float delta) {
+    //? if >=26.1 {
+    /*public void extractRenderState(GuiGraphics context, int mouseX, int mouseY, float delta) {
+    *///?} else
+    public void render(GuiGraphics context, int mouseX, int mouseY, float delta) {
         if (screen.start == null) {
             screen.start = Instant.now();
         }
@@ -100,22 +112,22 @@ public class SaturnScreenFabric extends Screen implements ScreenProvider {
 
         // Glass is blurred from the game as it is before this screen blurs it.
         if (Config.usesGlass()) {
-            context.draw();
+            context.flush();
             GlassRenderer.saveBackground();
         }
 
         float radius = screen.getBackgroundBlur();
-        PostEffectProcessor postEffectProcessor = radius < 1 ? null : this.client.getShaderLoader().loadPostEffect(
-                Identifier.ofVanilla("blur"),
-                DefaultFramebufferSet.MAIN_ONLY);
+        PostChain postEffectProcessor = radius < 1 ? null : this.minecraft.getShaderManager().getPostChain(
+                Identifier.withDefaultNamespace("blur"),
+                LevelTargetBundle.MAIN_TARGETS);
 
         if (postEffectProcessor != null) {
             //? if >=1.21.5
-            postEffectProcessor.render(this.client.getFramebuffer(), this.pool, pass -> pass.setUniform("Radius", radius));
+            postEffectProcessor.process(this.minecraft.getMainRenderTarget(), this.pool, pass -> pass.setUniform("Radius", radius));
             //? if <1.21.5
-            //postEffectProcessor.setUniforms("Radius", radius);
+            //postEffectProcessor.setUniform("Radius", radius);
             //? if <1.21.5
-            //postEffectProcessor.render(this.client.getFramebuffer(), this.pool);
+            //postEffectProcessor.process(this.minecraft.getMainRenderTarget(), this.pool);
         }
         *///?}
 
@@ -128,33 +140,44 @@ public class SaturnScreenFabric extends Screen implements ScreenProvider {
     // Vanilla's background would cover Saturn's panorama, and blurs by the vanilla setting. The
     // strength of this blur comes from GameRendererMixin, which gives Saturn's setting instead.
     @Override
-    public void renderBackground(DrawContext context, int mouseX, int mouseY, float delta) {
+    //? if >=26.1 {
+    /*public void extractBackground(GuiGraphics context, int mouseX, int mouseY, float delta) {
+    *///?} else
+    public void renderBackground(GuiGraphics context, int mouseX, int mouseY, float delta) {
         // The panorama renderer has no opacity (and takes no delta) from 1.21.6, so it's drawn fully
         // opaque.
         if (isShowingPanorama()) {
+            //? if >=26.2 {
+            /*ROTATING_PANORAMA_RENDERER.extractRenderState(context, this.width, this.height);
+            *///?} else if >=26.1 {
+            /*ROTATING_PANORAMA_RENDERER.extractRenderState(context, this.width, this.height, true);
+            *///?} else
             ROTATING_PANORAMA_RENDERER.render(context, this.width, this.height, true);
         }
 
         if (screen.getBackgroundBlur() >= 1) {
-            context.applyBlur();
+            context.blurBeforeThisStratum();
         }
 
-        if (client.world != null) {
-            renderDarkening(context);
+        if (minecraft.level != null) {
+            //? if >=26.1 {
+            /*extractMenuBackground(context);
+            *///?} else
+            renderMenuBackground(context);
         }
     }
     //?}
 
     /** Whether Saturn's panorama is behind the screen: outside a world, once it's loaded. */
     private boolean isShowingPanorama() {
-        return panoramaReady && client.world == null && client.getCurrentServerEntry() == null;
+        return panoramaReady && minecraft.level == null && minecraft.getCurrentServer() == null;
     }
 
     // 1.21.9 moved mouse and key events to Click and KeyInput.
     //? if >=1.21.9 {
     @Override
-    public boolean mouseClicked(Click click, boolean doubled) {
-        if (screen.mouseClicked(click.x(), click.y(), click.button())) {
+    public boolean mouseClicked(MouseButtonEvent click, boolean doubled) {
+        if (screen.mouseClicked(click.x(), click.y(), Keys.mouseButtonToSaturn(click.button()))) {
             return true;
         }
 
@@ -162,9 +185,9 @@ public class SaturnScreenFabric extends Screen implements ScreenProvider {
     }
 
     @Override
-    public boolean mouseDragged(Click click, double offsetX, double offsetY) {
+    public boolean mouseDragged(MouseButtonEvent click, double offsetX, double offsetY) {
         // offsetX and offsetY are the drag deltas, as mouseDragged's deltaX and deltaY were before 1.21.9.
-        if (screen.mouseDragged(click.x(), click.y(), click.button(), offsetX, offsetY)) {
+        if (screen.mouseDragged(click.x(), click.y(), Keys.mouseButtonToSaturn(click.button()), offsetX, offsetY)) {
             return true;
         }
 
@@ -172,8 +195,8 @@ public class SaturnScreenFabric extends Screen implements ScreenProvider {
     }
 
     @Override
-    public boolean mouseReleased(Click click) {
-        if (screen.mouseReleased(click.x(), click.y(), click.button())) {
+    public boolean mouseReleased(MouseButtonEvent click) {
+        if (screen.mouseReleased(click.x(), click.y(), Keys.mouseButtonToSaturn(click.button()))) {
             return true;
         }
 
@@ -215,8 +238,12 @@ public class SaturnScreenFabric extends Screen implements ScreenProvider {
 
     //? if >=1.21.9 {
     @Override
-    public boolean keyPressed(KeyInput input) {
-        if (screen.keyPressed(input.getKeycode(), input.scancode(), input.modifiers())) {
+    public boolean keyPressed(KeyEvent input) {
+        // 26.3's key() is SDL's scancode; Saturn's key codes are GLFW's (see Keys).
+        //? if >=26.3 {
+        /*if (screen.keyPressed(Keys.toSaturn(input.key()), input.key(), Keys.modifiersToSaturn(input.modifiers()))) {
+        *///?} else
+        if (screen.keyPressed(input.input(), input.scancode(), input.modifiers())) {
             return true;
         }
 
@@ -240,16 +267,22 @@ public class SaturnScreenFabric extends Screen implements ScreenProvider {
     }
     //?} else {
     /*@Override
-    public void resize(MinecraftClient client, int width, int height) {
+    public void resize(Minecraft client, int width, int height) {
         screen.resize(width, height);
         super.resize(client, width, height);
     }
     *///?}
 
     @Override
-    public void close() {
+    public void onClose() {
         this.screen.onClose();
-        super.close();
+        super.onClose();
+    }
+
+    // ScreenProvider's close, separate from the vanilla onClose above.
+    @Override
+    public void close() {
+        onClose();
     }
 
     @Override

src/main/java/org/saturnclient/impl/ui/Screens.java

@@ -0,0 +1,33 @@
+package org.saturnclient.impl.ui;
+
+import org.jetbrains.annotations.Nullable;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.screens.Screen;
+
+/** The open screen and overlay, which Minecraft holds before 26.2 and its Gui from 26.2. */
+public final class Screens {
+    private Screens() {
+    }
+
+    public static @Nullable Screen current() {
+        //? if >=26.2 {
+        /*return Minecraft.getInstance().gui.screen();
+        *///?} else
+        return Minecraft.getInstance().screen;
+    }
+
+    public static void set(@Nullable Screen screen) {
+        //? if >=26.2 {
+        /*Minecraft.getInstance().gui.setScreen(screen);
+        *///?} else
+        Minecraft.getInstance().setScreen(screen);
+    }
+
+    public static void clearOverlay() {
+        //? if >=26.2 {
+        /*Minecraft.getInstance().gui.setOverlay(null);
+        *///?} else
+        Minecraft.getInstance().setOverlay(null);
+    }
+}

src/main/java/org/saturnclient/saturnclient/SaturnClient.java

@@ -3,7 +3,7 @@ package org.saturnclient.saturnclient;
 import net.fabricmc.api.ModInitializer;
 import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents;
 import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents;
-import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.Minecraft;
 
 import org.saturnclient.client.ServiceClient;
 import org.saturnclient.cosmetics.Emotes;
@@ -29,12 +29,12 @@ public class SaturnClient implements ModInitializer {
 
     public static final String MOD_ID = "saturnclient";
     public static final Logger LOGGER = LoggerFactory.getLogger(MOD_ID);
-    public static MinecraftClient client;
+    public static Minecraft client;
 
     @Override
     public void onInitialize() {
         LOGGER.info("Initializing " + MOD_ID);
-        client = MinecraftClient.getInstance();
+        client = Minecraft.getInstance();
 
         Providers.saturn = new SaturnProviderImpl();
         Providers.refConstructor = new RefConstructorImpl();

src/main/java/org/saturnclient/saturnclient/event/KeyInputHandler.java

@@ -1,11 +1,14 @@
 package org.saturnclient.saturnclient.event;
 
 import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents;
+//? if >=26.1 {
+/*import net.fabricmc.fabric.api.client.keymapping.v1.KeyMappingHelper;
+*///?} else
 import net.fabricmc.fabric.api.client.keybinding.v1.KeyBindingHelper;
-import net.minecraft.client.option.KeyBinding;
-import net.minecraft.client.util.InputUtil;
+import net.minecraft.client.KeyMapping;
+import com.mojang.blaze3d.platform.InputConstants;
 //? if >=1.21.9
-import net.minecraft.util.Identifier;
+import net.minecraft.resources.Identifier;
 
 import org.saturnclient.config.Config;
 import org.saturnclient.saturnclient.SaturnClient;
@@ -13,10 +16,10 @@ import org.saturnclient.common.provider.Providers;
 import org.saturnclient.client.ServiceClient;
 import org.saturnclient.emotes.fabric.Emotes;
 import org.saturnclient.impl.ui.SaturnScreenFabric;
+import org.saturnclient.impl.ui.Screens;
 import org.saturnclient.ui.screens.EmoteWheel;
 import org.saturnclient.ui.screens.ShiftMenu;
 
-import org.lwjgl.glfw.GLFW;
 
 /**
  * Handles keyboard input events for the Saturn Client.
@@ -24,31 +27,37 @@ import org.lwjgl.glfw.GLFW;
  */
 public class KeyInputHandler {
     //? if >=1.21.9 {
-    private static final Identifier KEY_CATEGORY = Identifier.of("saturnclient", "key.category.saturnclient");
+    private static final Identifier KEY_CATEGORY = Identifier.fromNamespaceAndPath("saturnclient", "key.category.saturnclient");
     //?} else
     //private static final String KEY_CATEGORY = "key.category.saturnclient";
     private static final String MAIN_MENU_KEY_ID = "key.saturnclient.main_menu";
-    private static final int DEFAULT_MENU_KEY = GLFW.GLFW_KEY_RIGHT_SHIFT;
-    private static KeyBinding mainMenuKeyBinding;
+    private static final int DEFAULT_MENU_KEY = InputConstants.KEY_RSHIFT;
+    private static KeyMapping mainMenuKeyBinding;
 
     public static void register() {
-        //? if >=1.21.9 {
-        mainMenuKeyBinding = KeyBindingHelper.registerKeyBinding(
-                new KeyBinding(
+        //? if >=26.1 {
+        /*mainMenuKeyBinding = KeyMappingHelper.registerKeyMapping(
+                new KeyMapping(
                         MAIN_MENU_KEY_ID,
                         DEFAULT_MENU_KEY,
-                        KeyBinding.Category.create(KEY_CATEGORY)));
-        //?} else {
-        /*mainMenuKeyBinding = KeyBindingHelper.registerKeyBinding(new KeyBinding(
+                        KeyMapping.Category.register(KEY_CATEGORY)));
+        *///?} else if >=1.21.9 {
+        mainMenuKeyBinding = KeyBindingHelper.registerKeyBinding(
+                new KeyMapping(
                         MAIN_MENU_KEY_ID,
-                InputUtil.Type.KEYSYM,
+                        DEFAULT_MENU_KEY,
+                        KeyMapping.Category.register(KEY_CATEGORY)));
+        //?} else {
+        /*mainMenuKeyBinding = KeyBindingHelper.registerKeyBinding(new KeyMapping(
+                MAIN_MENU_KEY_ID,
+                InputConstants.Type.KEYSYM,
                 DEFAULT_MENU_KEY,
                 KEY_CATEGORY));
         *///?}
 
         // Register the event handler for the main menu key
         ClientTickEvents.END_CLIENT_TICK.register(client -> {
-            if (mainMenuKeyBinding.wasPressed()) {
+            if (mainMenuKeyBinding.consumeClick()) {
                 Providers.saturn.getClient().setScreen(new ShiftMenu());
             }
 
@@ -56,22 +65,24 @@ public class KeyInputHandler {
             // from the screen's own key handling would reopen it on the next tick, since the key is
             // still down and no screen is open by then.
             if (Config.openEmoteWheel.wasKeyPressed()
-                    //? if >=1.21.9 {
-                    && !InputUtil.isKeyPressed(client.getWindow(), GLFW.GLFW_KEY_F3)) {
+                    //? if >=26.3 {
+                    /*&& !InputConstants.isKeyDown(InputConstants.KEY_F3)) {
+                    *///?} else if >=1.21.9 {
+                    && !InputConstants.isKeyDown(client.getWindow(), InputConstants.KEY_F3)) {
                     //?} else
-                    //&& !InputUtil.isKeyPressed(client.getWindow().getHandle(), GLFW.GLFW_KEY_F3)) {
-                if (client.currentScreen == null) {
+                    //&& !InputConstants.isKeyDown(client.getWindow().getWindow(), InputConstants.KEY_F3)) {
+                if (Screens.current() == null) {
                     Providers.saturn.getClient().setScreen(new EmoteWheel());
-                } else if (client.currentScreen instanceof SaturnScreenFabric saturnScreen
+                } else if (Screens.current() instanceof SaturnScreenFabric saturnScreen
                         && saturnScreen.screen instanceof EmoteWheel) {
-                    saturnScreen.close();
+                    saturnScreen.onClose();
                 }
             }
 
             // Sneaking cancels your own emote, for everyone.
-            if (SaturnClient.client.player != null && SaturnClient.client.player.isSneaking()
-                    && Emotes.playing(SaturnClient.client.player.getUuid()).isPresent()) {
-                Emotes.stop(SaturnClient.client.player.getUuid());
+            if (SaturnClient.client.player != null && SaturnClient.client.player.isShiftKeyDown()
+                    && Emotes.playing(SaturnClient.client.player.getUUID()).isPresent()) {
+                Emotes.stop(SaturnClient.client.player.getUUID());
                 ServiceClient.emote("");
             }
         });

src/main/java/org/saturnclient/saturnclient/mixin/DrawContextAccessor.java

@@ -1,20 +1,20 @@
 package org.saturnclient.saturnclient.mixin;
 
-import net.minecraft.client.gui.DrawContext;
+import net.minecraft.client.gui.GuiGraphics;
 //? if >=1.21.6 {
 import net.minecraft.client.gui.render.state.GuiRenderState;
 //?} else
-//import net.minecraft.client.render.VertexConsumerProvider;
+//import net.minecraft.client.renderer.MultiBufferSource;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.gen.Accessor;
 
-@Mixin(DrawContext.class)
+@Mixin(GuiGraphics.class)
 public interface DrawContextAccessor {
     //? if >=1.21.6 {
-    @Accessor("state")
+    @Accessor("guiRenderState")
     GuiRenderState getState();
     //?} else {
-    /*@Accessor("vertexConsumers")
-    VertexConsumerProvider.Immediate getVertexConsumers();
+    /*@Accessor("bufferSource")
+    MultiBufferSource.BufferSource getVertexConsumers();
     *///?}
 }

src/main/java/org/saturnclient/saturnclient/mixin/GuiRendererMixin.java

@@ -0,0 +1,46 @@
+package org.saturnclient.saturnclient.mixin;
+
+//? if >=26.1 {
+/*import com.llamalad7.mixinextras.injector.wrapoperation.Operation;
+import com.llamalad7.mixinextras.injector.wrapoperation.WrapOperation;
+import net.minecraft.client.gui.render.GuiRenderer;
+import net.minecraft.client.renderer.CubeMap;
+import org.saturnclient.impl.ui.GlassRenderer;
+import org.saturnclient.impl.ui.SaturnScreenFabric;
+import org.saturnclient.impl.ui.Screens;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+*///?} else
+import net.minecraft.client.Minecraft;
+import org.spongepowered.asm.mixin.Mixin;
+
+/**
+ * From 26.1 GuiRenderer draws the menu panorama from its own cube map, which is vanilla's. While a
+ * Saturn screen is open, this draws Saturn's panorama instead. It also blurs the glass backdrops
+ * once the panorama is drawn. Before 26.1 SaturnScreenFabric draws
+ * the panorama itself, so this mixin is empty there, and it targets Minecraft because GuiRenderer
+ * doesn't exist before 1.21.6. It stays registered, keeping saturnclient.mixins.json the same for
+ * every version.
+ */
+//? if >=26.1 {
+/*@Mixin(GuiRenderer.class)
+public class GuiRendererMixin {
+    @WrapOperation(method = "render", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/renderer/CubeMap;render(FF)V"))
+    private void saturn$drawSaturnPanorama(CubeMap cubeMap, float xRot, float yRot, Operation<Void> original) {
+        boolean saturnScreen = Screens.current() instanceof SaturnScreenFabric;
+        original.call(saturnScreen ? SaturnScreenFabric.PANORAMA_RENDERER : cubeMap, xRot, yRot);
+    }
+
+    // The glass backdrops are copied here, with the frame's world and panorama drawn and the GUI not
+    // yet: the GUI is built before the frame is drawn (see GlassRenderer).
+    @Inject(method = "render", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/gui/render/GuiRenderer;prepare()V"))
+    private void saturn$blurGlassBackdrops(CallbackInfo ci) {
+        GlassRenderer.blurPendingBackdrops();
+    }
+}
+*///?} else {
+@Mixin(Minecraft.class)
+public class GuiRendererMixin {
+}
+//?}

src/main/java/org/saturnclient/saturnclient/mixin/PlayerEntityRendererMixin.java

@@ -1,20 +1,23 @@
 package org.saturnclient.saturnclient.mixin;
 
 //? if >=1.21.9 {
-import net.minecraft.client.network.ClientPlayerLikeEntity;
-import net.minecraft.entity.PlayerLikeEntity;
+import net.minecraft.client.entity.ClientAvatarEntity;
+import net.minecraft.world.entity.Avatar;
 //?} else
-//import net.minecraft.client.network.AbstractClientPlayerEntity;
-import net.minecraft.client.render.entity.EntityRendererFactory;
-import net.minecraft.client.render.entity.LivingEntityRenderer;
-import net.minecraft.client.render.entity.PlayerEntityRenderer;
-import net.minecraft.client.render.entity.model.PlayerEntityModel;
-import net.minecraft.client.render.entity.state.PlayerEntityRenderState;
-import net.minecraft.entity.Entity;
-import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.text.MutableText;
-import net.minecraft.text.Text;
-import net.minecraft.util.Formatting;
+//import net.minecraft.client.player.AbstractClientPlayer;
+import net.minecraft.client.renderer.entity.EntityRendererProvider;
+import net.minecraft.client.renderer.entity.LivingEntityRenderer;
+import net.minecraft.client.renderer.entity.player.AvatarRenderer;
+//? if >=1.21.11 {
+import net.minecraft.client.model.player.PlayerModel;
+//?} else
+//import net.minecraft.client.model.PlayerModel;
+import net.minecraft.client.renderer.entity.state.AvatarRenderState;
+import net.minecraft.world.entity.Entity;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.network.chat.MutableComponent;
+import net.minecraft.network.chat.Component;
+import net.minecraft.ChatFormatting;
 
 import org.saturnclient.client.player.Roles;
 import org.saturnclient.client.player.SaturnPlayer;
@@ -26,54 +29,54 @@ import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
-@Mixin(PlayerEntityRenderer.class)
+@Mixin(AvatarRenderer.class)
 public abstract class PlayerEntityRendererMixin
-        extends LivingEntityRenderer<PlayerEntity, PlayerEntityRenderState, PlayerEntityModel> {
+        extends LivingEntityRenderer<Player, AvatarRenderState, PlayerModel> {
 
     protected PlayerEntityRendererMixin() {
         super(null, null, 0.0f);
     }
 
     @Inject(method = "<init>", at = @At("TAIL"))
-    private void addCustomFeatureRenderer(EntityRendererFactory.Context ctx, boolean slim, CallbackInfo ci) {
-        this.addFeature(new HatFeatureRenderer(this));
-        this.addFeature(new CloakFeatureRenderer(this, ctx.getEquipmentModelLoader()));
+    private void addCustomFeatureRenderer(EntityRendererProvider.Context ctx, boolean slim, CallbackInfo ci) {
+        this.addLayer(new HatFeatureRenderer(this));
+        this.addLayer(new CloakFeatureRenderer(this, ctx.getEquipmentAssets()));
     }
 
     // Adds the role icon to the player's name, and stores the SaturnPlayer in the render state for the
     // cloak and hat (Fabric API only has render state data from 1.21.8).
     //? if >=1.21.9 {
-    @Inject(method = "updateRenderState", at = @At("TAIL"))
-    public <A extends PlayerLikeEntity & ClientPlayerLikeEntity> void updateRenderState(
-            A entity, PlayerEntityRenderState state, float f, CallbackInfo ci) {
+    @Inject(method = "extractRenderState", at = @At("TAIL"))
+    public <A extends Avatar & ClientAvatarEntity> void updateRenderState(
+            A entity, AvatarRenderState state, float f, CallbackInfo ci) {
         saturn$applyPlayer(entity, state);
     }
     //?} else {
-    /*@Inject(method = "updateRenderState", at = @At("TAIL"))
+    /*@Inject(method = "extractRenderState", at = @At("TAIL"))
     public void updateRenderState(
-            AbstractClientPlayerEntity entity, PlayerEntityRenderState state, float f, CallbackInfo ci) {
+            AbstractClientPlayer entity, AvatarRenderState state, float f, CallbackInfo ci) {
         saturn$applyPlayer(entity, state);
     }
     *///?}
 
-    private void saturn$applyPlayer(Entity entity, PlayerEntityRenderState state) {
+    private void saturn$applyPlayer(Entity entity, AvatarRenderState state) {
         if (entity == null) {
             return;
         }
 
-        SaturnPlayer player = SaturnPlayer.get(entity.getUuid());
+        SaturnPlayer player = SaturnPlayer.get(entity.getUUID());
 
         //? if >=1.21.8
         state.setData(SaturnRenderState.saturnDataKey, player);
 
-        if (player != null && state.displayName != null) {
-            MutableText iconText = Text.literal(Roles.getSaturnIndicator())
-                    .styled(style -> style.withColor(Roles.getIconColor(player.uuid)));
+        if (player != null && state.nameTag != null) {
+            MutableComponent iconText = Component.literal(Roles.getSaturnIndicator())
+                    .withStyle(style -> style.withColor(Roles.getIconColor(player.uuid)));
 
-            state.displayName = Text.empty()
+            state.nameTag = Component.empty()
                     .append(iconText.copy())
-                    .append(Text.empty().formatted(Formatting.RESET))
-                    .append(state.displayName.copy());
+                    .append(Component.empty().withStyle(ChatFormatting.RESET))
+                    .append(state.nameTag.copy());
         }
     }
 }

src/main/java/org/saturnclient/saturnclient/mixin/SetScreenMixin.java

@@ -7,18 +7,24 @@ import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.ModifyVariable;
 
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.client.gui.screen.Screen;
-import net.minecraft.client.gui.screen.TitleScreen;
+import net.minecraft.client.Minecraft;
+//? if >=26.2
+//import net.minecraft.client.gui.Gui;
+import net.minecraft.client.gui.screens.Screen;
+import net.minecraft.client.gui.screens.TitleScreen;
 
-@Mixin(MinecraftClient.class)
+// Screens are opened through Gui from 26.2 (through Minecraft before).
+//? if >=26.2 {
+/*@Mixin(Gui.class)
+*///?} else
+@Mixin(Minecraft.class)
 public class SetScreenMixin {
     @ModifyVariable(method = "setScreen", at = @At("HEAD"), argsOnly = true)
     private Screen replaceTitleScreen(Screen screen) {
         if (Config.saturnTitleScreen.value) {
             if (screen instanceof TitleScreen)
                 return new SaturnScreenFabric(new TitleMenu());
-            if (screen == null && ((MinecraftClient) (Object) this).world == null)
+            if (screen == null && Minecraft.getInstance().level == null)
                 return new SaturnScreenFabric(new TitleMenu());
         }
 

src/main/java/org/saturnclient/saturnclient/mixin/SplashOverlayMixin.java

@@ -1,5 +1,7 @@
 package org.saturnclient.saturnclient.mixin;
 
+import org.saturnclient.impl.ui.Screens;
+
 import java.util.Optional;
 import java.util.function.Consumer;
 
@@ -12,67 +14,73 @@ import org.spongepowered.asm.mixin.Overwrite;
 import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.Final;
 
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.client.gui.DrawContext;
-import net.minecraft.client.gui.screen.SplashOverlay;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.GuiGraphics;
+import net.minecraft.client.gui.screens.LoadingOverlay;
 //? if >=1.21.11
-import net.minecraft.client.util.Window;
-import net.minecraft.resource.ResourceReload;
+import com.mojang.blaze3d.platform.Window;
+import net.minecraft.server.packs.resources.ReloadInstance;
+//? if >=1.21.11 {
 import net.minecraft.util.Util;
-import net.minecraft.util.math.MathHelper;
+//?} else
+//import net.minecraft.Util;
+import net.minecraft.util.Mth;
 
-@Mixin(SplashOverlay.class)
+@Mixin(LoadingOverlay.class)
 public abstract class SplashOverlayMixin {
 
     @Shadow
-    private MinecraftClient client;
+    private Minecraft minecraft;
     @Shadow
-    private ResourceReload reload;
+    private ReloadInstance reload;
 
     @Shadow
-    private long reloadCompleteTime;
+    private long fadeOutStart;
 
     @Shadow
-    private long reloadStartTime;
+    private long fadeInStart;
 
     @Shadow
     @Final
-    private boolean reloading;
+    private boolean fadeIn;
 
     @Shadow
     @Final
-    private Consumer<Optional<Throwable>> exceptionHandler;
+    private Consumer<Optional<Throwable>> onFinish;
 
     @Shadow
-    private float progress;
+    private float currentProgress;
 
     /**
      * @author SaturnClient
      * @reason Replace vanilla splash rendering completely but keep exit logic
      */
     @Overwrite
-    public void render(DrawContext context, int mouseX, int mouseY, float delta) {
-        int screenWidth = context.getScaledWindowWidth();
-        int screenHeight = context.getScaledWindowHeight();
-        long currentTime = Util.getMeasuringTimeMs();
+    //? if >=26.1 {
+    /*public void extractRenderState(GuiGraphics context, int mouseX, int mouseY, float delta) {
+    *///?} else
+    public void render(GuiGraphics context, int mouseX, int mouseY, float delta) {
+        int screenWidth = context.guiWidth();
+        int screenHeight = context.guiHeight();
+        long currentTime = Util.getMillis();
 
         // Initialize reload start time if not set
-        if (reloadStartTime == -1L) {
-            reloadStartTime = currentTime;
+        if (fadeInStart == -1L) {
+            fadeInStart = currentTime;
         }
 
         // Compute fade-out progress after reload completes
-        float fadeOutProgress = reloadCompleteTime > -1L
-                ? (float) (currentTime - reloadCompleteTime) / 1000f
+        float fadeOutProgress = fadeOutStart > -1L
+                ? (float) (currentTime - fadeOutStart) / 1000f
                 : -1f;
 
         int alpha = fadeOutProgress >= 0f
-                ? MathHelper.ceil((1.0f - MathHelper.clamp(fadeOutProgress - 1f, 0f, 1f)) * 255f)
+                ? Mth.ceil((1.0f - Mth.clamp(fadeOutProgress - 1f, 0f, 1f)) * 255f)
                 : 255;
 
         // Compute fade-in progress while reloading
-        float reloadProgress = reloadStartTime > -1L
-                ? (float) (currentTime - reloadStartTime) / 500f
+        float reloadProgress = fadeInStart > -1L
+                ? (float) (currentTime - fadeInStart) / 500f
                 : -1f;
 
         // Get render scope for better UI
@@ -84,7 +92,7 @@ public abstract class SplashOverlayMixin {
             int overlayAlpha = computeOverlayAlpha(fadeOutProgress - 1f);
             scope.drawTexture(Textures.SPLASH, 0, 0, 0, 0, screenWidth, screenHeight,
                     Theme.withAlpha(overlayAlpha, 0xFFFFFFFF));
-        } else if (reloading) {
+        } else if (fadeIn) {
             if (reloadProgress < 1.0F) {
                 renderCurrentScreen(context, mouseX, mouseY, delta);
             }
@@ -95,8 +103,8 @@ public abstract class SplashOverlayMixin {
                     Theme.withAlpha(alpha, 0xFFFFFFFF));
         }
 
-        float u = this.reload.getProgress();
-        this.progress = MathHelper.clamp(this.progress * 0.95F + u * 0.050000012F, 0.0F, 1.0F);
+        float u = this.reload.getActualProgress();
+        this.currentProgress = Mth.clamp(this.currentProgress * 0.95F + u * 0.050000012F, 0.0F, 1.0F);
 
         // Draw central logo
         drawLogo(scope, screenWidth, screenHeight, alpha);
@@ -104,16 +112,19 @@ public abstract class SplashOverlayMixin {
 
         // Remove overlay after fade-out completes
         if (fadeOutProgress >= 2.0F) {
-            client.setOverlay(null);
+            Screens.clearOverlay();
         }
 
         // Handle reload completion and exceptions
         handleReloadCompletion(context);
     }
 
-    private void renderCurrentScreen(DrawContext context, int mouseX, int mouseY, float delta) {
-        if (client.currentScreen != null) {
-            client.currentScreen.render(context, mouseX, mouseY, delta);
+    private void renderCurrentScreen(GuiGraphics context, int mouseX, int mouseY, float delta) {
+        if (Screens.current() != null) {
+            //? if >=26.1 {
+            /*Screens.current().extractRenderState(context, mouseX, mouseY, delta);
+            *///?} else
+            Screens.current().render(context, mouseX, mouseY, delta);
         }
     }
 
@@ -123,15 +134,19 @@ public abstract class SplashOverlayMixin {
                 Theme.withAlpha(alpha, 0xFFFFFFFF));
     }
 
-    private void renderProgressBar(RenderScope scope, DrawContext context, int screenWidth, int screenHeight,
+    private void renderProgressBar(RenderScope scope, GuiGraphics context, int screenWidth, int screenHeight,
             int alpha) {
         int progressY = ((screenHeight - 5) / 2) + 25;
-        //? if >=1.21.9 {
-        context.drawStrokedRectangle((screenWidth - 120) / 2, progressY, 120, 5, Theme.withAlpha(alpha, 0xFFFFFFFF));
-        //?} else
-        //context.drawBorder((screenWidth - 120) / 2, progressY, 120, 5, Theme.withAlpha(alpha, 0xFFFFFFFF));
+        //? if >=26.1 {
+        /*context.outline((screenWidth - 120) / 2, progressY, 120, 5, Theme.withAlpha(alpha, 0xFFFFFFFF));
+        *///?} else if >=1.21.11 {
+        context.renderOutline((screenWidth - 120) / 2, progressY, 120, 5, Theme.withAlpha(alpha, 0xFFFFFFFF));
+        //?} else if >=1.21.9 {
+        /*context.submitOutline((screenWidth - 120) / 2, progressY, 120, 5, Theme.withAlpha(alpha, 0xFFFFFFFF));
+        *///?} else
+        //context.renderOutline((screenWidth - 120) / 2, progressY, 120, 5, Theme.withAlpha(alpha, 0xFFFFFFFF));
 
-        int progressWidth = Math.min((int) (progress * 120), 120);
+        int progressWidth = Math.min((int) (currentProgress * 120), 120);
         int progressX = (screenWidth - 120) / 2;
 
         context.fill(progressX, progressY, progressX + progressWidth, progressY + 5,
@@ -140,31 +155,31 @@ public abstract class SplashOverlayMixin {
 
     /** Compute overlay alpha from fade progress */
     private int computeOverlayAlpha(float progress) {
-        return MathHelper.ceil((1.0F - MathHelper.clamp(progress, 0.0F, 1.0F)) * 255.0F);
+        return Mth.ceil((1.0F - Mth.clamp(progress, 0.0F, 1.0F)) * 255.0F);
     }
 
     /** Handle reload completion logic */
-    private void handleReloadCompletion(DrawContext context) {
-        float reloadProgress = reloadStartTime > -1L ? (float) (Util.getMeasuringTimeMs() - reloadStartTime) / 500f
+    private void handleReloadCompletion(GuiGraphics context) {
+        float reloadProgress = fadeInStart > -1L ? (float) (Util.getMillis() - fadeInStart) / 500f
                 : -1f;
 
-        if (reloadCompleteTime == -1L && reload.isComplete() && (!reloading || reloadProgress >= 2.0F)) {
+        if (fadeOutStart == -1L && reload.isDone() && (!fadeIn || reloadProgress >= 2.0F)) {
             try {
-                reload.throwException();
-                exceptionHandler.accept(Optional.empty());
+                reload.checkExceptions();
+                onFinish.accept(Optional.empty());
             } catch (Throwable ex) {
-                exceptionHandler.accept(Optional.of(ex));
+                onFinish.accept(Optional.of(ex));
             }
 
-            reloadCompleteTime = Util.getMeasuringTimeMs();
+            fadeOutStart = Util.getMillis();
 
             //? if >=1.21.11
-            Window window = client.getWindow();
-            if (client.currentScreen != null) {
+            Window window = minecraft.getWindow();
+            if (Screens.current() != null) {
                 //? if >=1.21.11 {
-                client.currentScreen.init(window.getScaledWidth(), window.getScaledHeight());
+                Screens.current().init(window.getGuiScaledWidth(), window.getGuiScaledHeight());
                 //?} else
-                //client.currentScreen.init(client, context.getScaledWindowWidth(), context.getScaledWindowHeight());
+                //Screens.current().init(minecraft, context.guiWidth(), context.guiHeight());
             }
         }
     }

src/main/java/org/saturnclient/saturnclient/mixin/TabListMixin.java

@@ -1,8 +1,8 @@
 package org.saturnclient.saturnclient.mixin;
 
-import net.minecraft.client.network.PlayerListEntry;
-import net.minecraft.scoreboard.Team;
-import net.minecraft.text.Text;
+import net.minecraft.client.multiplayer.PlayerInfo;
+import net.minecraft.world.scores.PlayerTeam;
+import net.minecraft.network.chat.Component;
 
 import java.util.UUID;
 
@@ -15,7 +15,7 @@ import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
 import com.mojang.authlib.GameProfile;
 
-@Mixin(PlayerListEntry.class)
+@Mixin(PlayerInfo.class)
 public abstract class TabListMixin {
 
     /**
@@ -23,9 +23,9 @@ public abstract class TabListMixin {
      * Saturn Client, keeping any name, rank prefix or team formatting the server
      * set.
      */
-    @Inject(method = "getDisplayName", at = @At("RETURN"), cancellable = true)
-    private void saturn$addSaturnIcon(CallbackInfoReturnable<Text> cir) {
-        PlayerListEntry entry = (PlayerListEntry) (Object) this;
+    @Inject(method = "getTabListDisplayName", at = @At("RETURN"), cancellable = true)
+    private void saturn$addSaturnIcon(CallbackInfoReturnable<Component> cir) {
+        PlayerInfo entry = (PlayerInfo) (Object) this;
         GameProfile profile = entry.getProfile();
         //? if >=1.21.9 {
         String name = profile.name();
@@ -39,16 +39,16 @@ public abstract class TabListMixin {
             return;
         }
 
-        Text displayName = cir.getReturnValue();
+        Component displayName = cir.getReturnValue();
 
         // With no server-set name, vanilla shows the team-decorated profile name.
         if (displayName == null) {
-            displayName = Team.decorateName(entry.getScoreboardTeam(), Text.literal(name));
+            displayName = PlayerTeam.formatNameForTeam(entry.getTeam(), Component.literal(name));
         }
 
-        cir.setReturnValue(Text.empty()
-                .append(Text.literal(Roles.getSaturnIndicator())
-                        .styled(style -> style.withColor(Roles.getIconColor(uuid))))
+        cir.setReturnValue(Component.empty()
+                .append(Component.literal(Roles.getSaturnIndicator())
+                        .withStyle(style -> style.withColor(Roles.getIconColor(uuid))))
                 .append(displayName));
     }
 }

src/main/java/org/saturnclient/saturnclient/mixin/WhoAmI.java

@@ -12,14 +12,14 @@
 package org.saturnclient.saturnclient.mixin;
 
 import com.llamalad7.mixinextras.injector.ModifyExpressionValue;
-import net.minecraft.client.render.entity.LivingEntityRenderer;
-import net.minecraft.entity.Entity;
+import net.minecraft.client.renderer.entity.LivingEntityRenderer;
+import net.minecraft.world.entity.Entity;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 
 @Mixin(LivingEntityRenderer.class)
 public class WhoAmI {
-    @ModifyExpressionValue(method = "hasLabel(Lnet/minecraft/entity/LivingEntity;D)Z", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/MinecraftClient;getCameraEntity()Lnet/minecraft/entity/Entity;"))
+    @ModifyExpressionValue(method = "shouldShowName(Lnet/minecraft/world/entity/LivingEntity;D)Z", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/Minecraft;getCameraEntity()Lnet/minecraft/world/entity/Entity;"))
     public Entity obfuscateCameraEntity(Entity original) {
         // hasLabel checks if the rendered entity is equal to the camera entity (aka our
         // player),

src/main/resources/assets/saturnclient/shaders/core/glass.fsh

@@ -1,16 +1,26 @@
 #version 330
+// 26.3 compiles shaders through SPIR-V, which needs every input and output's location.
+#ifdef EXPLICIT_LOCATIONS
+#extension GL_ARB_separate_shader_objects : require
+#endif
 
 // Saturn's glass: the blurred game behind the screen, cut to a panel's shape. For 1.21.6 and
 // later; glass_pre_1_21_6.fsh (with glass.json, the program 1.21.4 loads) is for older versions.
 
 // Vanilla's transforms, laid out as the version has them: 1.21.6 to 1.21.10 end with LineWidth, which
-// 1.21.11 dropped (GlassRenderer defines HAS_LINE_WIDTH there). Not imported: the include only exists
-// from 1.21.6, and 1.21.4 and 1.21.5 still read every shader's imports while loading resources.
+// 1.21.11 dropped (GlassRenderer defines HAS_LINE_WIDTH there), and 26.3 moved TextureMat up
+// (TEXTURE_MAT_SECOND). Not imported: the include only exists from 1.21.6, and 1.21.4 and 1.21.5 still
+// read every shader's imports while loading resources.
 layout(std140) uniform DynamicTransforms {
     mat4 ModelViewMat;
+#ifdef TEXTURE_MAT_SECOND
+    mat4 TextureMat;
+#endif
     vec4 ColorModulator;
     vec3 ModelOffset;
+#ifndef TEXTURE_MAT_SECOND
     mat4 TextureMat;
+#endif
 #ifdef HAS_LINE_WIDTH
     float LineWidth;
 #endif
@@ -21,10 +31,17 @@ uniform sampler2D Sampler0;
 // The game behind the screen, blurred, the size of the framebuffer
 uniform sampler2D Sampler1;
 
+#ifdef EXPLICIT_LOCATIONS
+layout(location = 0) in vec2 texCoord0;
+layout(location = 1) in vec4 vertexColor;
+
+layout(location = 0) out vec4 fragColor;
+#else
 in vec2 texCoord0;
 in vec4 vertexColor;
 
 out vec4 fragColor;
+#endif
 
 void main() {
     float mask = texture(Sampler0, texCoord0).a * vertexColor.a;

src/main/resources/fabric.mod.json

@@ -22,7 +22,7 @@
   ],
   "depends": {
     "fabricloader": ">=${loader_version}",
-    "fabric": "*",
+    "fabric-api": "*",
     "minecraft": "${minecraft_version}"
   }
 }

src/main/resources/features.mixins.json

@@ -2,7 +2,7 @@
   "required": true,
   "minVersion": "0.8",
   "package": "org.saturnclient.impl.features.mixins",
-  "compatibilityLevel": "JAVA_21",
+  "compatibilityLevel": "${java}",
   "client": [
     "render.GameRendererMixin",
     "render.LightmapTextureManagerMixin",

src/main/resources/impl.mixins.json

@@ -2,7 +2,7 @@
   "required": true,
   "minVersion": "0.8",
   "package": "org.saturnclient.impl.mixins",
-  "compatibilityLevel": "JAVA_21",
+  "compatibilityLevel": "${java}",
   "client": [
     "IdentifierMixin",
     "ItemStackMixin",

src/main/resources/saturnclient.mixins.json

@@ -2,14 +2,15 @@
   "required": true,
   "minVersion": "0.8",
   "package": "org.saturnclient.saturnclient.mixin",
-  "compatibilityLevel": "JAVA_21",
+  "compatibilityLevel": "${java}",
   "client": [
     "TabListMixin",
     "PlayerEntityRendererMixin",
     "WhoAmI",
     "DrawContextAccessor",
     "SplashOverlayMixin",
-    "SetScreenMixin"
+    "SetScreenMixin",
+    "GuiRendererMixin"
   ],
   "injectors": {
     "defaultRequire": 1

stonecutter.gradle.kts

@@ -6,6 +6,31 @@ plugins {
 // "Reset active project" before committing.
 stonecutter active "1.21.11"
 
+// src/ uses 1.21.11's Mojang names (the active version). These names changed in the versions given,
+// so Stonecutter swaps in each version's name when it processes it.
+stonecutter parameters {
+    for ((since, old, new) in listOf(
+        Triple("1.21.11", "ResourceLocation", "Identifier"),
+        Triple("1.21.9", "PlayerRenderer", "AvatarRenderer"),
+        Triple("1.21.9", "PlayerRenderState", "AvatarRenderState"),
+        Triple("26.1", "GuiGraphics", "GuiGraphicsExtractor"),
+        Triple("26.1", "net.minecraft.client.gui.render.state", "net.minecraft.client.renderer.state.gui"),
+        // GuiRenderState's methods
+        Triple("26.1", "submitGuiElement", "addGuiElement"),
+        Triple("26.1", "submitText", "addText"),
+        Triple("26.1", "submitItem", "addItem"),
+        Triple("26.1", "submitPicturesInPictureState", "addPicturesInPictureState"),
+        // 26.3 moves Blaze3D's API to renderpearl
+        Triple("26.3", "com.mojang.blaze3d.GpuFormat", "com.mojang.renderpearl.api.GpuFormat"),
+        Triple("26.3", "com.mojang.blaze3d.pipeline.RenderPipeline", "com.mojang.renderpearl.api.pipeline.RenderPipeline"),
+        Triple("26.3", "com.mojang.blaze3d.textures", "com.mojang.renderpearl.api.textures"),
+    )) {
+        replacements.regex(eval(current.version, ">=$since")) {
+            replace("\\b${Regex.escape(old)}\\b", new, "\\b${Regex.escape(new)}\\b", old)
+        }
+    }
+}
+
 subprojects {
     apply(plugin = "java")
 
@@ -55,17 +80,22 @@ subprojects {
 
 tasks.register("buildAll") {
     group = "build"
-    description = "Builds every Minecraft version's remapped jar and collects them in build/allJars"
+    description = "Builds every Minecraft version's mod jar and collects them in build/allJars"
 
-    val remapJars = subprojects.flatMap { it.tasks.matching { task -> task.name == "remapJar" } }
-    dependsOn(remapJars)
+    // The mod jar is remapJar's output for 1.21.x, and jar's for 26.1+, which isn't obfuscated.
+    val modJars = subprojects.filter { it.name != "common" }.flatMap { project ->
+        val unobfuscated = project.name.substringBefore('.').toInt() >= 26
+        val task = if (unobfuscated) "jar" else "remapJar"
+        project.tasks.matching { it.name == task }
+    }
+    dependsOn(modJars)
 
     doLast {
         val outputDir = layout.buildDirectory.dir("allJars").get().asFile
         outputDir.mkdirs()
-        remapJars.map { (it as AbstractArchiveTask).archiveFile.get().asFile }
+        modJars.map { (it as AbstractArchiveTask).archiveFile.get().asFile }
             .filter { it.exists() && !it.name.contains("sources") }
             .forEach { it.copyTo(outputDir.resolve(it.name), overwrite = true) }
-        println("All remapped jars collected in: $outputDir")
+        println("All mod jars collected in: $outputDir")
     }
 }

versions/1.21.10/gradle.properties

@@ -8,7 +8,6 @@ org.gradle.configuration-cache=false
 # Fabric Properties
 # check these on https://fabricmc.net/develop
 minecraft_version=1.21.10
-yarn_mappings=1.21.10+build.3
 loader_version=0.19.5
 
 fabric_api_version=0.138.4+1.21.10

versions/1.21.11/gradle.properties

@@ -8,7 +8,6 @@ org.gradle.configuration-cache=false
 # Fabric Properties
 # check these on https://fabricmc.net/develop
 minecraft_version=1.21.11
-yarn_mappings=1.21.11+build.4
 loader_version=0.19.5
 
 fabric_api_version=0.141.3+1.21.11

versions/1.21.4/gradle.properties

@@ -8,7 +8,6 @@ org.gradle.configuration-cache=false
 # Fabric Properties
 # check these on https://fabricmc.net/develop
 minecraft_version=1.21.4
-yarn_mappings=1.21.4+build.8
 loader_version=0.19.5
 
 # Mod Properties

versions/1.21.5/gradle.properties

@@ -8,7 +8,6 @@ org.gradle.configuration-cache=false
 # Fabric Properties
 # check these on https://fabricmc.net/develop
 minecraft_version=1.21.5
-yarn_mappings=1.21.5+build.1
 loader_version=0.19.5
 
 fabric_api_version=0.128.2+1.21.5

versions/1.21.6/gradle.properties

@@ -8,7 +8,6 @@ org.gradle.configuration-cache=false
 # Fabric Properties
 # check these on https://fabricmc.net/develop
 minecraft_version=1.21.6
-yarn_mappings=1.21.6+build.1
 loader_version=0.19.5
 
 fabric_api_version=0.128.2+1.21.6

versions/1.21.7/gradle.properties

@@ -8,7 +8,6 @@ org.gradle.configuration-cache=false
 # Fabric Properties
 # check these on https://fabricmc.net/develop
 minecraft_version=1.21.7
-yarn_mappings=1.21.7+build.8
 loader_version=0.19.5
 
 fabric_api_version=0.129.0+1.21.7

versions/1.21.8/gradle.properties

@@ -8,7 +8,6 @@ org.gradle.configuration-cache=false
 # Fabric Properties
 # check these on https://fabricmc.net/develop
 minecraft_version=1.21.8
-yarn_mappings=1.21.8+build.1
 loader_version=0.19.5
 
 fabric_api_version=0.136.1+1.21.8

versions/1.21.9/gradle.properties

@@ -8,7 +8,6 @@ org.gradle.configuration-cache=false
 # Fabric Properties
 # check these on https://fabricmc.net/develop
 minecraft_version=1.21.9
-yarn_mappings=1.21.9+build.1
 loader_version=0.19.5
 
 fabric_api_version=0.134.1+1.21.9

versions/26.1/gradle.properties

@@ -0,0 +1,19 @@
+# Done to increase the memory available to gradle.
+org.gradle.jvmargs=-Xmx1G
+org.gradle.parallel=true
+
+# IntelliJ IDEA is not yet fully compatible with configuration cache, see: https://github.com/FabricMC/fabric-loom/issues/1349
+org.gradle.configuration-cache=false
+
+# Fabric Properties
+# check these on https://fabricmc.net/develop
+minecraft_version=26.1
+# Built against 26.1 and allowed on its hotfixes (26.1.1, 26.1.2).
+minecraft_compat=~26.1
+loader_version=0.19.5
+
+fabric_api_version=0.145.1+26.1
+
+# Mod Properties
+maven_group=org.saturnclient
+archives_base_name=saturn-client

versions/26.2/gradle.properties

@@ -0,0 +1,17 @@
+# Done to increase the memory available to gradle.
+org.gradle.jvmargs=-Xmx1G
+org.gradle.parallel=true
+
+# IntelliJ IDEA is not yet fully compatible with configuration cache, see: https://github.com/FabricMC/fabric-loom/issues/1349
+org.gradle.configuration-cache=false
+
+# Fabric Properties
+# check these on https://fabricmc.net/develop
+minecraft_version=26.2
+loader_version=0.19.5
+
+fabric_api_version=0.161.0+26.2
+
+# Mod Properties
+maven_group=org.saturnclient
+archives_base_name=saturn-client

versions/26.3/gradle.properties

@@ -0,0 +1,17 @@
+# Done to increase the memory available to gradle.
+org.gradle.jvmargs=-Xmx1G
+org.gradle.parallel=true
+
+# IntelliJ IDEA is not yet fully compatible with configuration cache, see: https://github.com/FabricMC/fabric-loom/issues/1349
+org.gradle.configuration-cache=false
+
+# Fabric Properties
+# check these on https://fabricmc.net/develop
+minecraft_version=26.3
+loader_version=0.19.5
+
+fabric_api_version=0.161.0+26.3
+
+# Mod Properties
+maven_group=org.saturnclient
+archives_base_name=saturn-client