Merge pull request 'Keep hats and cloaks on the posed model, and fix resources on 1.21.4 and 1.21.5' (#41) from cosmetics-follow-emotes into master

Reviewed-on: #41

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

@@ -4,15 +4,20 @@ import java.util.Arrays;
 
 import org.joml.Matrix3f;
 import org.joml.Matrix4f;
+import org.joml.Quaternionf;
 import org.joml.Vector3f;
 import org.joml.Vector4f;
 import org.saturnclient.client.player.SaturnPlayer;
 import org.saturnclient.common.ref.asset.IdentifierRef;
 import org.saturnclient.config.Config;
 import org.saturnclient.cosmetics.Cloaks;
+import org.saturnclient.emotes.core.bend.LimbBend;
+import org.saturnclient.emotes.core.bend.Vec3;
+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;
 //? if >=1.21.9 {
@@ -33,7 +38,6 @@ 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.RotationAxis;
 import net.minecraft.util.math.Vec3d;
 
 /**
@@ -383,6 +387,25 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
         }
     }
 
+    /**
+     * An emote that bends the torso 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) {
+        LimbBend bend = ((BendablePart) (Object) body).saturnEmotes$getBend();
+        if (bend == null || bend.isStraight()) {
+            return;
+        }
+
+        // The top of the torso, in the body's own pixels
+        float[] top = new float[3];
+        bend.bendPoint(0, 0, 0, top);
+        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()));
+    }
+
     // Shift array left and insert new value at the start
     private void updateSegmentValues(float value) {
         // Shift all elements one position to the right (from end to start)
@@ -436,17 +459,24 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
 
         matrices.push();
 
+        // 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();
+        //? if >=1.21.5 {
+        model.getRootPart().applyTransform(matrices);
+        model.body.applyTransform(matrices);
+        //?} else {
+        /*model.getRootPart().rotate(matrices);
+        model.body.rotate(matrices);
+        *///?}
+        followBend(matrices, model.body);
+
         matrices.translate(0.0f, 0.0f, 0.12f);
 
         if (this.hasCustomModelForLayer(state.equippedChestStack, LayerType.HUMANOID)) {
             matrices.translate(0.0F, -0.053125F, 0.06875F);
         }
 
-        if (state.isInSneakingPose) {
-            matrices.translate(0, 0.16f, 0.0f);
-            matrices.multiply(RotationAxis.POSITIVE_X.rotationDegrees(29.0f));
-        }
-
         long now = System.currentTimeMillis();
         if (now - lastUpdate >= 20) {
             float velX = Math.min(0.8f, state.field_53537 / 108.0f);

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

@@ -1,6 +1,5 @@
 package org.saturnclient.impl.cosmetics;
 
-import org.joml.Quaternionf;
 import org.saturnclient.client.player.SaturnPlayer;
 import org.saturnclient.impl.cosmetics.obj.MtlLoader;
 import org.saturnclient.impl.cosmetics.obj.ObjModel;
@@ -16,7 +15,6 @@ 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.model.ModelPart;
 
 public class HatFeatureRenderer extends FeatureRenderer<PlayerEntityRenderState, PlayerEntityModel> {
     public HatFeatureRenderer(FeatureRendererContext<PlayerEntityRenderState, PlayerEntityModel> context) {
@@ -41,11 +39,16 @@ public class HatFeatureRenderer extends FeatureRenderer<PlayerEntityRenderState,
 
         matrices.push();
 
+        // 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();
         //? if >=1.21.5 {
-        ModelPart head = this.getContextModel().head;
-        matrices.multiply(new Quaternionf().rotationZYX(head.roll, head.yaw, head.pitch));
-        //?} else
-        //this.getContextModel().head.rotate(matrices);
+        model.getRootPart().applyTransform(matrices);
+        model.head.applyTransform(matrices);
+        //?} else {
+        /*model.getRootPart().rotate(matrices);
+        model.head.rotate(matrices);
+        *///?}
 
         ObjModel.cosmetic("hat", player.hat).render(MtlLoader.cosmetic(player.hat),
                 matrices, output, light,

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

@@ -48,6 +48,9 @@ public final class GlassRenderer {
             .withLocation(Identifier.of("saturnclient", "pipeline/glass"))
             .withFragmentShader(Identifier.of("saturnclient", "core/glass"))
             .withSampler("Sampler1")
+            // The transforms block ends with LineWidth before 1.21.11 (see glass.fsh).
+            //? if <1.21.11
+            //.withShaderDefine("HAS_LINE_WIDTH")
             .build();
 
     private static final Identifier BLUR = Identifier.ofVanilla("post_effect/blur.json");

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

@@ -3,8 +3,18 @@
 // 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 own, since its layout changes between versions (1.21.11 dropped LineWidth)
-#moj_import <minecraft:dynamictransforms.glsl>
+// 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.
+layout(std140) uniform DynamicTransforms {
+    mat4 ModelViewMat;
+    vec4 ColorModulator;
+    vec3 ModelOffset;
+    mat4 TextureMat;
+#ifdef HAS_LINE_WIDTH
+    float LineWidth;
+#endif
+};
 
 // The panel's rounded rectangle, the same texture its background is drawn with
 uniform sampler2D Sampler0;