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shader_decode: Implement IADD

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This commit is contained in:
ReinUsesLisp 2018-12-21 02:22:18 -03:00
parent ed53fd9dbb
commit 44787c1070
1 changed files with 28 additions and 1 deletions
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29
src/video_core/shader/decode/arithmetic_integer.cpp
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@ -16,7 +16,34 @@ u32 ShaderIR::DecodeArithmeticInteger(BasicBlock& bb, u32 pc) {
const Instruction instr = {program_code[pc]};
const auto opcode = OpCode::Decode(instr);
UNIMPLEMENTED();
Node op_a = GetRegister(instr.gpr8);
Node op_b = [&]() {
if (instr.is_b_imm) {
return Immediate(instr.alu.GetSignedImm20_20());
} else if (instr.is_b_gpr) {
return GetRegister(instr.gpr20);
} else {
return GetConstBuffer(instr.cbuf34.index, instr.cbuf34.offset);
}
}();
switch (opcode->get().GetId()) {
case OpCode::Id::IADD_C:
case OpCode::Id::IADD_R:
case OpCode::Id::IADD_IMM: {
UNIMPLEMENTED_IF_MSG(instr.generates_cc,
"Condition codes generation in IADD is not implemented");
UNIMPLEMENTED_IF_MSG(instr.alu.saturate_d, "IADD saturation not implemented");
op_a = GetOperandAbsNegInteger(op_a, false, instr.alu_integer.negate_a, true);
op_b = GetOperandAbsNegInteger(op_b, false, instr.alu_integer.negate_b, true);
SetRegister(bb, instr.gpr0, Operation(OperationCode::IAdd, PRECISE, op_a, op_b));
break;
}
default:
UNIMPLEMENTED_MSG("Unhandled ArithmeticInteger instruction: {}", opcode->get().GetName());
}
return pc;
}