hack block ID seen by ShadersMod mid-render

move block ID override to dedicated class
octarine-noise · Jul 22, 2014 · 0736915 · 0736915
1 parent 6700e72
commit 0736915
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Showing 5 changed files with 66 additions and 10 deletions.
diff --git a/src/main/java/mods/betterfoliage/client/BetterFoliageClient.java b/src/main/java/mods/betterfoliage/client/BetterFoliageClient.java
@@ -18,7 +18,6 @@
 import net.minecraft.block.Block;
 import net.minecraft.client.renderer.texture.TextureAtlasSprite;
 import net.minecraft.client.resources.IResource;
-import net.minecraft.init.Blocks;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.world.IBlockAccess;
 import net.minecraftforge.common.MinecraftForge;
@@ -71,6 +70,8 @@ public IResource getResource(ResourceLocation var1) throws IOException {
 		});
 
 		MinecraftForge.EVENT_BUS.register(new BetterFoliageClient());
+
+		ShadersModIntegration.init();
 	}
 
 	public static boolean isLeafTexture(TextureAtlasSprite icon) {
@@ -90,14 +91,6 @@ public static int getRenderTypeOverride(IBlockAccess blockAccess, int x, int y,
 		return original;
 	}
 
-	public static int getGLSLBlockIdOverride(int original, Block block) {
-		if (leaves.matchesID(original & 0xFFFF))
-			return Block.blockRegistry.getIDForObject(Blocks.leaves) & 0xFFFF | block.getRenderType() << 16;
-		if (crops.matchesID(original & 0xFFFF))
-			return Block.blockRegistry.getIDForObject(Blocks.tallgrass) & 0xFFFF | block.getRenderType() << 16;
-		return original;
-	}
-
 	public static void registerRenderer(IRenderBlockDecorator decorator) {
 		int renderId = RenderingRegistry.getNextAvailableRenderId();
 		decorators.put(renderId, decorator);

diff --git a/src/main/java/mods/betterfoliage/client/ShadersModIntegration.java b/src/main/java/mods/betterfoliage/client/ShadersModIntegration.java
@@ -0,0 +1,55 @@
+package mods.betterfoliage.client;
+
+import java.lang.reflect.Field;
+
+import net.minecraft.block.Block;
+import net.minecraft.init.Blocks;
+
+public class ShadersModIntegration {
+
+	private static boolean hasShadersMod = false;
+	private static int tallGrassEntityData;
+	private static int leavesEntityData;
+	private static Field shadersEntityData;
+	private static Field shadersEntityDataIndex;
+
+	private ShadersModIntegration() {}
+
+	public static void init() {
+		tallGrassEntityData = Block.blockRegistry.getIDForObject(Blocks.tallgrass) & 0xFFFF | Blocks.tallgrass.getRenderType() << 16;
+		leavesEntityData = Block.blockRegistry.getIDForObject(Blocks.leaves) & 0xFFFF | Blocks.leaves.getRenderType() << 16;
+
+		try {
+			Class<?> classShaders = Class.forName("shadersmodcore.client.Shaders");
+			shadersEntityData = classShaders.getDeclaredField("entityData");
+			shadersEntityDataIndex = classShaders.getDeclaredField("entityDataIndex");
+			hasShadersMod = true;
+		} catch(Exception e) {
+		}
+	}
+
+	public static void startGrassQuads() {
+		if (!hasShadersMod) return;
+		setShadersEntityData(tallGrassEntityData);
+	}
+
+	public static void startLeavesQuads() {
+		if (!hasShadersMod) return;
+		setShadersEntityData(leavesEntityData);
+	}
+
+	private static void setShadersEntityData(int data) {
+		try {
+			int[] entityData = (int[]) shadersEntityData.get(null);
+			int entityDataIndex = shadersEntityDataIndex.getInt(null);
+			entityData[(entityDataIndex * 2)] = data;
+		} catch (Exception e) {
+		}
+	}
+
+	public static int getBlockIdOverride(int original, Block block) {
+		if (BetterFoliageClient.leaves.matchesID(original & 0xFFFF)) return tallGrassEntityData;
+		if (BetterFoliageClient.crops.matchesID(original & 0xFFFF)) return leavesEntityData;
+		return original;
+	}
+}
diff --git a/src/main/java/mods/betterfoliage/client/render/impl/RenderBlockBetterGrass.java b/src/main/java/mods/betterfoliage/client/render/impl/RenderBlockBetterGrass.java
@@ -1,6 +1,7 @@
 package mods.betterfoliage.client.render.impl;
 
 import mods.betterfoliage.BetterFoliage;
+import mods.betterfoliage.client.ShadersModIntegration;
 import mods.betterfoliage.client.render.IRenderBlockDecorator;
 import mods.betterfoliage.client.render.IconSet;
 import mods.betterfoliage.client.render.RenderBlockAOBase;
@@ -49,6 +50,9 @@ public boolean renderWorldBlock(IBlockAccess world, int x, int y, int z, Block b
 
 		double scale = BetterFoliage.config.grassSize.value * 0.5;
 		double halfHeight = 0.5 * (BetterFoliage.config.grassHeightMin.value + pRand[heightVariation] * (BetterFoliage.config.grassHeightMax.value - BetterFoliage.config.grassHeightMin.value));
+
+		// render short grass
+		ShadersModIntegration.startGrassQuads();
 		Tessellator.instance.setBrightness(getBrightness(block, x, y + 1, z));
 		renderCrossedSideQuads(new Double3(x + 0.5, y + 1.0 - 0.125 * halfHeight, z + 0.5), ForgeDirection.UP, scale, halfHeight, pRot[variation], BetterFoliage.config.grassHOffset.value, renderIcon, 0, false);
 

diff --git a/src/main/java/mods/betterfoliage/client/render/impl/RenderBlockBetterReed.java b/src/main/java/mods/betterfoliage/client/render/impl/RenderBlockBetterReed.java
@@ -3,6 +3,7 @@
 import java.util.Random;
 
 import mods.betterfoliage.BetterFoliage;
+import mods.betterfoliage.client.ShadersModIntegration;
 import mods.betterfoliage.client.render.IRenderBlockDecorator;
 import mods.betterfoliage.client.render.IconSet;
 import mods.betterfoliage.client.render.RenderBlockAOBase;
@@ -59,6 +60,9 @@ public boolean renderWorldBlock(IBlockAccess world, int x, int y, int z, Block b
 		double quarterHeight = 0.25 * (BetterFoliage.config.reedHeightMin.value + pRand[heightVariation] * (BetterFoliage.config.reedHeightMax.value - BetterFoliage.config.reedHeightMin.value));
 		Tessellator.instance.setBrightness(getBrightness(block, x, y + 2, z));
 		Tessellator.instance.setColorOpaque(255, 255, 255);
+
+		// render reeds
+		ShadersModIntegration.startGrassQuads();
 		renderCrossedSideQuads(new Double3(x + 0.5, y + 1.0, z + 0.5), ForgeDirection.UP, 0.5, quarterHeight, pRot[iconVariation], BetterFoliage.config.reedHOffset.value, bottomIcon, 0, true);
 		renderCrossedSideQuads(new Double3(x + 0.5, y + 1.0 + 2.0 * quarterHeight, z + 0.5), ForgeDirection.UP, 0.5, quarterHeight, pRot[iconVariation], BetterFoliage.config.reedHOffset.value, topIcon, 0, true);
 

diff --git a/src/main/java/mods/betterfoliage/loader/BetterFoliageTransformer.java b/src/main/java/mods/betterfoliage/loader/BetterFoliageTransformer.java
@@ -49,7 +49,7 @@ public void handleGLSLBlockIDOverride(MethodNode method) {
 		AbstractInsnNode arrayStore = findNext(method.instructions.getFirst(), matchOpcode(Opcodes.IASTORE));
 		insertAfter(method.instructions, arrayStore.getPrevious(),
 			new VarInsnNode(Opcodes.ALOAD, 1),
-			new MethodInsnNode(Opcodes.INVOKESTATIC, "mods/betterfoliage/client/BetterFoliageClient", "getGLSLBlockIdOverride", signature("(ILnet/minecraft/block/Block;)I"))
+			new MethodInsnNode(Opcodes.INVOKESTATIC, "mods/betterfoliage/client/ShadersModIntegration", "getBlockIdOverride", signature("(ILnet/minecraft/block/Block;)I"))
 		);
 	}
 }