mirror of
https://github.com/GTNewHorizons/Angelica.git
synced 2026-11-11 16:07:39 +00:00
97 lines
2.8 KiB
Java
97 lines
2.8 KiB
Java
package shadersmodcore.transform;
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import java.util.Iterator;
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import org.objectweb.asm.ClassReader;
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import org.objectweb.asm.ClassVisitor;
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import org.objectweb.asm.ClassWriter;
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import org.objectweb.asm.FieldVisitor;
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import org.objectweb.asm.Label;
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import org.objectweb.asm.MethodVisitor;
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import org.objectweb.asm.Opcodes;
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import static org.objectweb.asm.Opcodes.*;
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import org.objectweb.asm.commons.Remapper;
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import org.objectweb.asm.tree.MethodNode;
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import net.minecraft.launchwrapper.IClassTransformer;
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public class SMCCTOpenGlHelper implements IClassTransformer {
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@Override
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public byte[] transform(String par1, String par2, byte[] par3) {
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SMCLog.fine("transforming %s %s",par1,par2);
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ClassReader cr = new ClassReader(par3);
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ClassWriter cw = new ClassWriter(cr, ClassWriter.COMPUTE_MAXS);
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CVTransform cv = new CVTransform(cw);
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cr.accept(cv,0);
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return cw.toByteArray();
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}
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private static class CVTransform extends ClassVisitor
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{
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String classname;
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public CVTransform(ClassVisitor cv)
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{
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super(Opcodes.ASM4, cv);
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}
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@Override
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public void visit(int version, int access, String name,
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String signature, String superName, String[] interfaces) {
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classname = name;
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//SMCLog.info(" class %s",name);
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cv.visit(version, access, name, signature, superName, interfaces);
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}
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//boolean has_activeTexUnit = false;
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// @Override
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// public FieldVisitor visitField(int access, String name, String desc,
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// String signature, Object value) {
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// //if (name.equals("activeTexUnit")) {
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// // has_activeTexUnit = true;
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// //}
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// return cv.visitField(access, name, desc, signature, value);
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// }
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@Override
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public MethodVisitor visitMethod(int access, String name, String desc,
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String signature, String[] exceptions)
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{
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//if (!has_activeTexUnit) {
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// has_activeTexUnit = true;
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// FieldVisitor fv = cv.visitField(ACC_PUBLIC + ACC_STATIC, "activeTexUnit", "I", null, null);
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// fv.visitEnd();
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// SMCLog.finest(" add field activeTexUnit");
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//}
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//SMCLog.info(" method %s.%s%s = %s",classname,name,desc,remappedName);
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if (Names.openGlHelper_setActiveTexture.equalsNameDesc(name, desc))
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{
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//SMCLog.info(" patching");
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return new MVsetActiveTexture(cv.visitMethod(access, name, desc, signature, exceptions));
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}
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return cv.visitMethod(access, name, desc, signature, exceptions);
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}
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}
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private static class MVsetActiveTexture extends MethodVisitor
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{
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public MVsetActiveTexture(MethodVisitor mv) {
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super(Opcodes.ASM4, mv);
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}
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@Override
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public void visitCode() {
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mv.visitCode();
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mv.visitVarInsn(ILOAD, 0);
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mv.visitFieldInsn(PUTSTATIC, "shadersmodcore/client/Shaders", "activeTexUnit", "I");
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SMCLog.finest(" set activeTexUnit");
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}
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}
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}
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