Initial commit from the source zip for version 2.3.18

java/shadersmodcore/transform/SMCCTTextureDynamic.java

@@ -0,0 +1,117 @@
+package shadersmodcore.transform;
+
+import java.util.Iterator;
+
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.ClassVisitor;
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.Label;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Opcodes;
+import static org.objectweb.asm.Opcodes.*;
+import org.objectweb.asm.commons.Remapper;
+import org.objectweb.asm.tree.MethodNode;
+
+
+import net.minecraft.launchwrapper.IClassTransformer;
+
+public class SMCCTTextureDynamic 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, ClassWriter.COMPUTE_MAXS);
+		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) {
+			classname = name;
+			//SMCLog.info(" class %s",name);
+			cv.visit(version, access, name, signature, superName, interfaces);
+		}
+
+		@Override
+		public MethodVisitor visitMethod(int access, String name, String desc,
+				String signature, String[] exceptions) 
+		{
+			//SMCLog.info("  method %s.%s%s = %s",classname,name,desc,remappedName);
+			if (name.equals("<init>") && desc.equals("(II)V"))
+			{
+				//SMCLog.finer("  patching method %s.%s%s = %s",classname,name,desc,nameM);
+				return new MVinit(cv.visitMethod(access, name, desc, signature, exceptions));
+			} else
+			if (Names.dynamicTexture_updateDynamicTexture.equalsNameDesc(name, desc))
+			{
+				//SMCLog.finer("  patching method %s.%s%s = %s",classname,name,desc,nameM);
+				return new MVupdate(cv.visitMethod(access, name, desc, signature, exceptions));
+			}
+			return cv.visitMethod(access, name, desc, signature, exceptions);
+		}
+		
+	}
+
+	private static class MVinit extends MethodVisitor
+	{
+		//protected MethodVisitor mv;
+		public MVinit(MethodVisitor mv) {
+			super(Opcodes.ASM4, mv);
+			//this.mv = mv;
+		}
+
+		@Override
+		public void visitIntInsn(int opcode, int operand) {
+			if (opcode == NEWARRAY && operand == T_INT) {
+				mv.visitInsn(ICONST_3);
+				mv.visitInsn(IMUL);
+			}
+			mv.visitIntInsn(opcode, operand);
+		}
+
+		@Override
+		public void visitMethodInsn(int opcode, String owner, String name,
+				String desc) {
+			if (Names.textureUtil_allocateTexture.equals(owner, name, desc)) {
+				mv.visitVarInsn(ALOAD, 0);
+				mv.visitMethodInsn(INVOKESTATIC, "shadersmodcore/client/ShadersTex", "initDynamicTexture", "(III"+Names.dynamicTexture_.desc+")V");
+				return;
+			}
+			mv.visitMethodInsn(opcode, owner, name, desc);
+		}
+
+	}
+	
+	private static class MVupdate extends MethodVisitor
+	{
+		//protected MethodVisitor mv;
+		public MVupdate(MethodVisitor mv) {
+			super(Opcodes.ASM4, mv);
+			//this.mv = mv;
+		}
+
+		@Override
+		public void visitMethodInsn(int opcode, String owner, String name,
+				String desc) {
+			if (Names.textureUtil_uploadTexture.equals(owner, name, desc)) {
+				mv.visitVarInsn(ALOAD, 0);
+				mv.visitMethodInsn(INVOKESTATIC, "shadersmodcore/client/ShadersTex", "updateDynamicTexture", "(I[III"+Names.dynamicTexture_.desc+")V");
+				return;
+			}
+			mv.visitMethodInsn(opcode, owner, name, desc);
+		}
+
+	}
+
+}