fix(render): flickering off-world rendered multitexture with glow

Isolated each Quad drawn ITexture layer rendering in own Tessellation context
when rendering item blocks off world (inventory, in-hand, dropped item).

1 files changed, 25 insertions, 0 deletions

diff --git a/src/main/java/gregtech/api/interfaces/ITexture.java b/src/main/java/gregtech/api/interfaces/ITexture.java
index 4321cc523c..61244a10ae 100644
--- a/src/main/java/gregtech/api/interfaces/ITexture.java
+++ b/src/main/java/gregtech/api/interfaces/ITexture.java
@@ -2,6 +2,7 @@ package gregtech.api.interfaces;
 
 import net.minecraft.block.Block;
 import net.minecraft.client.renderer.RenderBlocks;
+import net.minecraft.client.renderer.Tessellator;
 
 public interface ITexture {
     void renderXPos(RenderBlocks aRenderer, Block aBlock, int aX, int aY, int aZ);
@@ -17,4 +18,28 @@ public interface ITexture {
     void renderZNeg(RenderBlocks aRenderer, Block aBlock, int aX, int aY, int aZ);
 
     boolean isValidTexture();
+
+    /**
+     * Will initialize the {@link Tessellator} if rendering off-world (Inventory)
+     * @param aRenderer The {@link RenderBlocks} Renderer
+     * @param aNormalX The X Normal for current Quad Face
+     * @param aNormalY The Y Normal for current Quad Face
+     * @param aNormalZ The Z Normal for current Quad Face
+     */
+    default void startDrawingQuads(RenderBlocks aRenderer, float aNormalX, float aNormalY, float aNormalZ) {
+        if (aRenderer.useInventoryTint) {
+            Tessellator.instance.startDrawingQuads();
+            Tessellator.instance.setNormal(aNormalX, aNormalY, aNormalZ);
+        }
+    }
+
+    /**
+     * Will run the {@link Tessellator} to draw Quads if rendering off-world (Inventory)
+     * @param aRenderer The {@link RenderBlocks} Renderer
+     */
+    default void draw(RenderBlocks aRenderer) {
+        if (aRenderer.useInventoryTint) {
+            Tessellator.instance.draw();
+        }
+    }
 }