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

@@ -1,12 +1,20 @@
 package org.saturnclient.impl.features.mixins.render;
 
+//? if >=1.21.6
+import net.minecraft.client.MinecraftClient;
+//? if >=1.21.6
+import net.minecraft.client.option.GameOptions;
 import net.minecraft.client.render.GameRenderer;
 
+//? if >=1.21.6
+import org.saturnclient.impl.ui.SaturnScreenFabric;
 import org.saturnclient.mod.mods.FreelookMod;
 import org.saturnclient.mod.mods.ZoomMod;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
+//? if >=1.21.6
+import org.spongepowered.asm.mixin.injection.Redirect;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
 /**
@@ -38,4 +46,18 @@ public class GameRendererMixin {
             cir.setReturnValue(zoomedFov);
         }
     }
+
+    //? 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.
+    @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) {
+            return saturnScreen.screen.getBackgroundBlur();
+        }
+
+        return options.getMenuBackgroundBlurrinessValue();
+    }
+    //?}
 }

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

@@ -7,7 +7,6 @@ import org.jetbrains.annotations.Nullable;
 import org.joml.Quaternionf;
 import org.joml.Vector3f;
 import org.saturnclient.saturnclient.SaturnClient;
-import org.saturnclient.ui.ElementContext;
 import org.saturnclient.ui.RenderScope;
 import org.saturnclient.ui.components.SkinPreview.EntityDrawer;
 
@@ -21,33 +20,32 @@ import net.minecraft.entity.LivingEntity;
 
 public class EntityDrawerImpl implements EntityDrawer {
     @Override
-    public void render(RenderScope renderScope, boolean negativeAngle, float angle, float scale, ElementContext ctx) {
+    public boolean render(RenderScope renderScope, int width, int height, float yaw) {
         LivingEntity entity = SaturnClient.client.player;
 
-        if (entity != null) {
+        if (entity == null) {
-            drawEntity(renderScope, 0, 0, 75, 78, 30, 0.0625F, ctx.mouseX / scale, ctx.mouseY / scale,
+            return false;
-                    SaturnClient.client.player);
-        }
         }
 
+        // The player is about 1.8 blocks tall; leave some room above and below.
+        drawEntity(renderScope, 0, 0, width, height, (int) (height / 2.2F), 0.0625F, yaw, entity);
+        return true;
+    }
+
+    // Draws the entity in the box, turned by yaw degrees (0 faces the viewer) with its head straight.
     public static void drawEntity(RenderScope renderScope, int x1, int y1, int x2, int y2, int size, float scale,
-            float mouseX, float mouseY, LivingEntity entity) {
+            float yaw, LivingEntity entity) {
-        float f = (float) (x1 + x2) / 2.0F;
-        float g = (float) (y1 + y2) / 2.0F;
         renderScope.enableScissor(x1, y1, x2, y2);
-        float h = (float) Math.atan((double) ((f - mouseX) / 40.0F));
-        float i = (float) Math.atan((double) ((g - mouseY) / 40.0F));
         Quaternionf quaternionf = (new Quaternionf()).rotateZ((float) Math.PI);
-        Quaternionf quaternionf2 = (new Quaternionf()).rotateX(i * 20.0F * ((float) Math.PI / 180F));
+        Quaternionf quaternionf2 = new Quaternionf();
-        quaternionf.mul(quaternionf2);
         float j = entity.bodyYaw;
         float k = entity.getYaw();
         float l = entity.getPitch();
         float m = entity.lastHeadYaw;
         float n = entity.headYaw;
-        entity.bodyYaw = 180.0F + h * 20.0F;
+        entity.bodyYaw = 180.0F + yaw;
-        entity.setYaw(180.0F + h * 40.0F);
+        entity.setYaw(180.0F + yaw);
-        entity.setPitch(-i * 20.0F);
+        entity.setPitch(0.0F);
         entity.headYaw = entity.getYaw();
         entity.lastHeadYaw = entity.getYaw();
         float o = entity.getScale();
@@ -83,7 +81,6 @@ public class EntityDrawerImpl implements EntityDrawer {
 import org.joml.Quaternionf;
 import org.joml.Vector3f;
 import org.saturnclient.saturnclient.SaturnClient;
-import org.saturnclient.ui.ElementContext;
 import org.saturnclient.ui.RenderScope;
 import org.saturnclient.ui.components.SkinPreview.EntityDrawer;
 
@@ -92,14 +89,12 @@ import net.minecraft.client.render.entity.EntityRenderDispatcher;
 import net.minecraft.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.
     public static void drawEntity(RenderScope renderScope, int x1, int y1, int x2, int y2, int size, float f,
-            float mouseX,
+            float yaw, LivingEntity entity) {
-            float mouseY, LivingEntity entity, float angle, boolean negativeAngle) {
         float g = (float) (x1 + x2) / 2.0F;
         float h = (float) (y1 + y2) / 2.0F;
-        renderScope.enableScissor(0, 6, x2, y2);
+        renderScope.enableScissor(x1, y1, x2, y2);
-        float i = (float) Math.atan((double) ((g - mouseX) / 40.0F));
-        float j = (float) Math.atan((double) ((h - mouseY) / 40.0F));
         Quaternionf quaternionf = (new Quaternionf()).rotateZ(3.1415927F);
         float k = entity.bodyYaw;
         float l = entity.getYaw();
@@ -109,10 +104,10 @@ public class EntityDrawerImpl implements EntityDrawer {
         //? if <1.21.5
         //float n = entity.prevHeadYaw;
         float o = entity.headYaw;
-        entity.setYaw(angle);
+        entity.setYaw(180.0F + yaw);
-        entity.bodyYaw = angle;
+        entity.bodyYaw = 180.0F + yaw;
-        entity.setPitch(-(j * 20.0F));
+        entity.setPitch(0.0F);
-        entity.headYaw = negativeAngle ? (i * 40.0F) + 180f : -(i * 40.0F);
+        entity.headYaw = entity.getYaw();
         //? if >=1.21.5
         entity.lastHeadYaw = entity.getHeadYaw();
         //? if <1.21.5
@@ -166,12 +161,15 @@ public class EntityDrawerImpl implements EntityDrawer {
     }
 
     @Override
-    public void render(RenderScope renderScope, boolean negativeAngle, float angle, float scale, ElementContext ctx) {
+    public boolean render(RenderScope renderScope, int width, int height, float yaw) {
         LivingEntity entity = SaturnClient.client.player;
-        if (entity != null) {
+        if (entity == null) {
-            drawEntity(renderScope, 0, 0, 75, 78, 30, 0.0625F, ctx.mouseX / scale, ctx.mouseY / scale, entity, angle,
+            return false;
-                    negativeAngle);
         }
+
+        // The player is about 1.8 blocks tall; leave some room above and below.
+        drawEntity(renderScope, 0, 0, width, height, (int) (height / 2.2F), 0.0625F, yaw, entity);
+        return true;
     }
 }
 *///?}

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

@@ -89,25 +89,18 @@ public class SaturnScreenFabric extends Screen implements ScreenProvider {
         mouseX *= 2;
         mouseY *= 2;
 
-        // From 1.21.6 the panorama renderer has no opacity (and takes no delta), so it's drawn fully
+        // From 1.21.6 the background, blur included, is drawn in renderBackground.
-        // opaque there.
+        //? if <1.21.6 {
-        if (panoramaReady && client.world == null && client.getCurrentServerEntry() == null) {
+        /*if (isShowingPanorama()) {
-            //? if >=1.21.6 {
+            ROTATING_PANORAMA_RENDERER.render(context, this.width, this.height, screen.backgroundOpacity, delta);
-            ROTATING_PANORAMA_RENDERER.render(context, this.width, this.height, true);
-            //?} else
-            //ROTATING_PANORAMA_RENDERER.render(context, this.width, this.height, screen.backgroundOpacity, delta);
         }
 
-        // TODO: the background blur (screen.backgroundBlur) is only drawn before 1.21.6 so far. See
+        PostEffectProcessor postEffectProcessor = this.client.getShaderLoader().loadPostEffect(
-        // also issue #23.
-
-        //? if <1.21.6 {
-        /*PostEffectProcessor postEffectProcessor = this.client.getShaderLoader().loadPostEffect(
                 Identifier.ofVanilla("blur"),
                 DefaultFramebufferSet.MAIN_ONLY);
 
         if (postEffectProcessor != null) {
-            float radius = screen.backgroundBlur * Math.min((float) elapsed / 700, 1.0f);
+            float radius = screen.getBackgroundBlur();
             //? if >=1.21.5
             postEffectProcessor.render(this.client.getFramebuffer(), this.pool, pass -> pass.setUniform("Radius", radius));
             //? if <1.21.5
@@ -122,6 +115,32 @@ public class SaturnScreenFabric extends Screen implements ScreenProvider {
         screen.render(renderScope, mouseX, mouseY, delta, elapsed);
     }
 
+    //? if >=1.21.6 {
+    // 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) {
+        // The panorama renderer has no opacity (and takes no delta) from 1.21.6, so it's drawn fully
+        // opaque.
+        if (isShowingPanorama()) {
+            ROTATING_PANORAMA_RENDERER.render(context, this.width, this.height, true);
+        }
+
+        if (screen.getBackgroundBlur() >= 1) {
+            context.applyBlur();
+        }
+
+        if (client.world != null) {
+            renderDarkening(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;
+    }
+
     // 1.21.9 moved mouse and key events to Click and KeyInput.
     //? if >=1.21.9 {
     @Override