From 5e53a2e188653a7b265cf52fc79e4213c8760d72 Mon Sep 17 00:00:00 2001
From: Klesti Selimaj <klesti.selimay@icloud.com>
Date: Sat, 21 Mar 2026 10:38:14 +0100
Subject: [PATCH] End shader

---
 .../impl/cosmetics/CloakFeatureRenderer.java  |  4 +--
 .../impl/cosmetics/obj/ObjRenderer.java       |  8 ++---
 .../impl/cosmetics/utils/ShaderUtils.java     | 35 +++++++++++++++++++
 3 files changed, 41 insertions(+), 6 deletions(-)
 create mode 100644 versions/1.21.4/src/main/java/org/saturnclient/impl/cosmetics/utils/ShaderUtils.java

diff --git a/versions/1.21.4/src/main/java/org/saturnclient/impl/cosmetics/CloakFeatureRenderer.java b/versions/1.21.4/src/main/java/org/saturnclient/impl/cosmetics/CloakFeatureRenderer.java
index 899ed55..cbe509f 100644
--- a/versions/1.21.4/src/main/java/org/saturnclient/impl/cosmetics/CloakFeatureRenderer.java
+++ b/versions/1.21.4/src/main/java/org/saturnclient/impl/cosmetics/CloakFeatureRenderer.java
@@ -5,9 +5,9 @@ import java.util.Arrays;
 import org.saturnclient.client.player.SaturnPlayer;
 import org.saturnclient.config.Config;
 import org.saturnclient.cosmetics.Cloaks;
+import org.saturnclient.impl.cosmetics.utils.ShaderUtils;
 
 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.entity.equipment.EquipmentModel;
@@ -297,7 +297,7 @@ public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderStat
         light = (skyLight << 20) | (blockLight << 4);
 
         VertexConsumer vertexConsumer = vertexConsumerProvider
-                .getBuffer(RenderLayer.getEntityAlpha(customCape));
+                .getBuffer(ShaderUtils.getRenderLayer(customCape));
 
         matrixStack.push();
 
diff --git a/versions/1.21.4/src/main/java/org/saturnclient/impl/cosmetics/obj/ObjRenderer.java b/versions/1.21.4/src/main/java/org/saturnclient/impl/cosmetics/obj/ObjRenderer.java
index 27635a2..896910d 100644
--- a/versions/1.21.4/src/main/java/org/saturnclient/impl/cosmetics/obj/ObjRenderer.java
+++ b/versions/1.21.4/src/main/java/org/saturnclient/impl/cosmetics/obj/ObjRenderer.java
@@ -4,16 +4,18 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.util.Map;
 
+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;
 import net.minecraft.client.render.VertexConsumerProvider;
 import net.minecraft.client.util.math.MatrixStack;
 import net.minecraft.util.Identifier;
 
 public class ObjRenderer {
+
     public static Obj loadObj(Identifier objId) throws IOException {
         try (InputStream is = MinecraftClient.getInstance().getResourceManager()
                 .getResource(objId).get().getInputStream()) {
@@ -39,8 +41,6 @@ public class ObjRenderer {
             if (mtl != null) {
                 String mapKd = mtl.getMapKd();
                 if (mapKd != null) {
-                    // "#key" references are not resolvable at runtime without a texture map,
-                    // so we only support direct resource location strings here
                     if (!mapKd.startsWith("#")) {
                         texture = Identifier.of(mapKd);
                     }
@@ -58,7 +58,7 @@ public class ObjRenderer {
                 }
             }
 
-            VertexConsumer consumer = vertexConsumers.getBuffer(RenderLayer.getEntityAlpha(texture));
+            VertexConsumer consumer = vertexConsumers.getBuffer(ShaderUtils.getRenderLayer(texture));
 
             int faces = groupObj.getNumFaces();
             final float fr = r, fg = g, fb = b;
diff --git a/versions/1.21.4/src/main/java/org/saturnclient/impl/cosmetics/utils/ShaderUtils.java b/versions/1.21.4/src/main/java/org/saturnclient/impl/cosmetics/utils/ShaderUtils.java
new file mode 100644
index 0000000..1375ae3
--- /dev/null
+++ b/versions/1.21.4/src/main/java/org/saturnclient/impl/cosmetics/utils/ShaderUtils.java
@@ -0,0 +1,35 @@
+package org.saturnclient.impl.cosmetics.utils;
+
+import net.minecraft.client.render.RenderLayer;
+import net.minecraft.client.render.RenderPhase;
+import net.minecraft.client.render.VertexFormat.DrawMode;
+import net.minecraft.client.render.VertexFormats;
+import net.minecraft.client.render.RenderPhase.Textures;
+import net.minecraft.client.render.block.entity.EndPortalBlockEntityRenderer;
+import net.minecraft.util.Identifier;
+
+public class ShaderUtils {
+    public static final RenderLayer END_GATEWAY = RenderLayer.of(
+            "end_gateway_no_cull",
+            VertexFormats.POSITION,
+            DrawMode.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)
+                            .build())
+                    .cull(RenderPhase.DISABLE_CULLING)
+                    .build(false));
+
+    public static RenderLayer getRenderLayer(Identifier texture) {
+        if (texture.getPath().endsWith("end.png")) {
+            return END_GATEWAY;
+        } else {
+            return RenderLayer.getEntityAlpha(texture);
+        }
+    }
+}