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shader_decode: Implement SHR

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This commit is contained in:
ReinUsesLisp 2018-12-21 02:05:52 -03:00
parent 39f1c6246a
commit a2819c204f
1 changed files with 26 additions and 1 deletions
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27
src/video_core/shader/decode/shift.cpp
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@ -16,7 +16,32 @@ u32 ShaderIR::DecodeShift(BasicBlock& bb, u32 pc) {
const Instruction instr = {program_code[pc]};
const auto opcode = OpCode::Decode(instr);
UNIMPLEMENTED();
const Node op_a = GetRegister(instr.gpr8);
const 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::SHR_C:
case OpCode::Id::SHR_R:
case OpCode::Id::SHR_IMM: {
UNIMPLEMENTED_IF_MSG(instr.generates_cc,
"Condition codes generation in SHR is not implemented");
const Node value = SignedOperation(OperationCode::IArithmeticShiftRight,
instr.shift.is_signed, PRECISE, op_a, op_b);
SetRegister(bb, instr.gpr0, value);
break;
}
default:
UNIMPLEMENTED_MSG("Unhandled shift instruction: {}", opcode->get().GetName());
}
return pc;
}