val m = ASMUtil.getMappedMethod(clazz, MUpdateRendererMcp, MUpdateRendererSrg)
val insnsPre = new InsnList()
// Call the pre render hook, if it returns true, return the method
val lblTrue = new LabelNode() // Label for if-statement
val lblFalse = new LabelNode()
insnsPre.add(new VarInsnNode(Opcodes.ALOAD, 16)) // Pass 'renderer' as argument to onRenderByTypePost
insnsPre.add(new VarInsnNode(Opcodes.ALOAD, 16)) // Pass 'renderer' as argument to getfield
insnsPre.add(new FieldInsnNode(Opcodes.GETFIELD, "net/minecraft/client/renderer/RenderBlocks", ASMUtil.validateName(FBlockAccessMcp, FBlockAccessSrg), "Lnet/minecraft/world/IBlockAccess;")) // Pass 'blockAccess' as argument to onRenderByTypePost
insnsPre.add(new VarInsnNode(Opcodes.ILOAD, 23)) // Pass 'x' as argument to onRenderByTypePost
insnsPre.add(new VarInsnNode(Opcodes.ILOAD, 21)) // Pass 'y' as argument to onRenderByTypePost
insnsPre.add(new VarInsnNode(Opcodes.ILOAD, 22)) // Pass 'z' as argument to onRenderByTypePost
insnsPre.add(new VarInsnNode(Opcodes.ALOAD, 24)) // Pass 'block' as argument to onRenderByTypePost
insnsPre.add(new VarInsnNode(Opcodes.ILOAD, 17)) // Pass 'renderPass' as argument to onRenderByTypePost
val name = "onRenderByTypePre"
val desc = Type.getMethodDescriptor(Type.BOOLEAN_TYPE, Type.getObjectType("net/minecraft/client/renderer/RenderBlocks"), Type.getObjectType("net/minecraft/world/IBlockAccess"), Type.INT_TYPE, Type.INT_TYPE, Type.INT_TYPE, Type.getObjectType("net/minecraft/block/Block"), Type.INT_TYPE) // Method descriptor for onRenderByTypePre
insnsPre.add(new MethodInsnNode(Opcodes.INVOKESTATIC, "de/mineformers/core/impl/asm/ASMHooks", name, desc)) // Invoke onRenderByTypePre
insnsPre.add(new JumpInsnNode(Opcodes.IFEQ, lblTrue)) // Use the result as if jump
insnsPre.add(new InsnNode(Opcodes.ICONST_1))
insnsPre.add(new VarInsnNode(Opcodes.ISTORE, 19))
insnsPre.add(new JumpInsnNode(Opcodes.GOTO, lblFalse))
insnsPre.add(lblTrue)

val insnsPost = new InsnList()
// Call the post render hook
insnsPost.add(new VarInsnNode(Opcodes.ALOAD, 16)) // Pass 'renderer' as argument to onRenderByTypePost
insnsPost.add(new VarInsnNode(Opcodes.ALOAD, 16)) // Pass 'renderer' as argument to getfield
insnsPost.add(new FieldInsnNode(Opcodes.GETFIELD, "net/minecraft/client/renderer/RenderBlocks", ASMUtil.validateName(FBlockAccessMcp, FBlockAccessSrg), "Lnet/minecraft/world/IBlockAccess;")) // Pass 'blockAccess' as argument to onRenderByTypePost
insnsPost.add(new VarInsnNode(Opcodes.ILOAD, 23)) // Pass 'x' as argument to onRenderByTypePost
insnsPost.add(new VarInsnNode(Opcodes.ILOAD, 21)) // Pass 'y' as argument to onRenderByTypePost
insnsPost.add(new VarInsnNode(Opcodes.ILOAD, 22)) // Pass 'z' as argument to onRenderByTypePost
insnsPost.add(new VarInsnNode(Opcodes.ALOAD, 24)) // Pass 'block' as argument to onRenderByTypePost
insnsPre.add(new VarInsnNode(Opcodes.ILOAD, 17)) // Pass 'renderPass' as argument to onRenderByTypePost
val namePost = "onRenderByTypePost"
val descPost = Type.getMethodDescriptor(Type.VOID_TYPE, Type.getObjectType("net/minecraft/client/renderer/RenderBlocks"), Type.getObjectType("net/minecraft/world/IBlockAccess"), Type.INT_TYPE, Type.INT_TYPE, Type.INT_TYPE, Type.getObjectType("net/minecraft/block/Block"), Type.INT_TYPE) // Method descriptor for onRenderByTypePost
insnsPost.add(new MethodInsnNode(Opcodes.INVOKESTATIC, "de/mineformers/core/impl/asm/ASMHooks", namePost, descPost)) // Invoke onRenderByTypePost

val loop = new Breaks
var visitedPre = false
loop.breakable(for (i <- 0 until m.instructions.size()) {
  m.instructions.get(i) match {
    case v: VarInsnNode => if (v.`var` == 24) {
      if (v.getOpcode == Opcodes.ALOAD && v.getNext.getOpcode == Opcodes.ILOAD &&
        v.getNext.getNext.getOpcode == Opcodes.INVOKEVIRTUAL && v.getNext.getNext.getNext.getOpcode == Opcodes.IFNE &&
        !visitedPre) {
        visitedPre = true
        m.instructions.insertBefore(v.getPrevious.getPrevious.getPrevious, insnsPre)
      }
    }
    case i: IincInsnNode => if(i.getOpcode == Opcodes.IINC) {
      if(i.`var` == 23 && i.getNext.getOpcode == Opcodes.GOTO) {
        m.instructions.insertBefore(i, insnsPost)
        m.instructions.insertBefore(i, lblFalse)
        loop.break()
      }
    }
    case _ =>
  }
})