Mirrors/yuzu
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

gl_shader_decompiler: Implement LOP instructions.

Browse source
This commit is contained in:
bunnei 2018-06-17 13:26:11 -04:00
parent 5673ce39c7
commit afdd657d30
2 changed files with 42 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

34
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
View file

@ -1043,12 +1043,7 @@ private:
}
case OpCode::Type::ArithmeticInteger: {
std::string op_a = regs.GetRegisterAsInteger(instr.gpr8);
if (instr.alu_integer.negate_a)
op_a = '-' + op_a;
std::string op_b = instr.alu_integer.negate_b ? "-" : "";
std::string op_b;
if (instr.is_b_imm) {
op_b += '(' + std::to_string(instr.alu.GetSignedImm20_20()) + ')';
} else {
@ -1064,6 +1059,12 @@ private:
case OpCode::Id::IADD_C:
case OpCode::Id::IADD_R:
case OpCode::Id::IADD_IMM: {
if (instr.alu_integer.negate_a)
op_a = "-(" + op_a + ')';
if (instr.alu_integer.negate_b)
op_b = "-(" + op_b + ')';
regs.SetRegisterToInteger(instr.gpr0, true, 0, op_a + " + " + op_b, 1, 1,
instr.alu.saturate_d);
break;
@ -1071,12 +1072,33 @@ private:
case OpCode::Id::ISCADD_C:
case OpCode::Id::ISCADD_R:
case OpCode::Id::ISCADD_IMM: {
if (instr.alu_integer.negate_a)
op_a = "-(" + op_a + ')';
if (instr.alu_integer.negate_b)
op_b = "-(" + op_b + ')';
std::string shift = std::to_string(instr.alu_integer.shift_amount.Value());
regs.SetRegisterToInteger(instr.gpr0, true, 0,
"((" + op_a + " << " + shift + ") + " + op_b + ')', 1, 1);
break;
}
case OpCode::Id::LOP_C:
case OpCode::Id::LOP_R:
case OpCode::Id::LOP_IMM: {
ASSERT_MSG(!instr.alu.lop.unk44, "Unimplemented");
ASSERT_MSG(instr.alu.lop.pred48 == Pred::UnusedIndex, "Unimplemented");
if (instr.alu.lop.invert_a)
op_a = "~(" + op_a + ')';
if (instr.alu.lop.invert_b)
op_b = "~(" + op_b + ')';
WriteLogicOperation(instr.gpr0, instr.alu.lop.operation, op_a, op_b);
break;
}
default: {
NGLOG_CRITICAL(HW_GPU, "Unhandled ArithmeticInteger instruction: {}",
opcode->GetName());