Initial commit from the source zip for version 2.3.18

java/shadersmodcore/transform/SMCCTBlock.java

@@ -0,0 +1,76 @@
+package shadersmodcore.transform;
+
+import static org.objectweb.asm.Opcodes.*;
+import net.minecraft.launchwrapper.IClassTransformer;
+
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.ClassVisitor;
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Opcodes;
+
+public class SMCCTBlock implements IClassTransformer {
+
+	@Override
+	public byte[] transform(String par1, String par2, byte[] par3) {
+		SMCLog.fine("transforming %s %s",par1,par2);
+		ClassReader cr = new ClassReader(par3);
+		ClassWriter cw = new ClassWriter(cr, 0);
+		CVTransform cv = new CVTransform(cw);
+		cr.accept(cv,0);
+		return cw.toByteArray();
+	}
+
+	private static class CVTransform extends ClassVisitor
+	{
+		String classname;
+		public CVTransform(ClassVisitor cv)
+		{
+			super(Opcodes.ASM4, cv);		
+		}
+
+		@Override
+		public void visit(int version, int access, String name,
+				String signature, String superName, String[] interfaces) {
+			this.classname = name;
+			//SMCLog.info(" class %s",name);
+			super.visit(version, access, name, signature, superName, interfaces);
+		}
+
+		@Override
+		public MethodVisitor visitMethod(int access, String name, String desc,
+				String signature, String[] exceptions) 
+		{
+			if (Names.block_getAoLight.equalsNameDesc(name, desc))
+			{
+				//SMCLog.info("  patching");
+				return new MVgetAoLight(cv.visitMethod(access, name, desc, signature, exceptions));
+			}
+			return cv.visitMethod(access, name, desc, signature, exceptions);
+		}
+		
+	}
+
+	private static class MVgetAoLight extends MethodVisitor
+	{
+		public MVgetAoLight(MethodVisitor mv) {
+			super(Opcodes.ASM4, mv);
+		}
+
+		@Override
+		public void visitLdcInsn(Object cst) {
+			if (cst instanceof Float)
+			{
+				if (((Float)cst).floatValue() == 0.2f)
+				{
+					mv.visitFieldInsn(GETSTATIC, "shadersmodcore/client/Shaders", "blockAoLight", "F");
+					SMCLog.info("   blockAoLight");
+					return;
+				}
+			}
+			mv.visitLdcInsn(cst);
+		}
+
+	}
+
+}