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shader_decode: Implement HADD2 and HMUL2

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This commit is contained in:
ReinUsesLisp 2018-12-21 02:31:46 -03:00
parent cf4a08d950
commit 68c99d2597
1 changed files with 48 additions and 1 deletions
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49
src/video_core/shader/decode/arithmetic_half.cpp
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@ -16,7 +16,54 @@ u32 ShaderIR::DecodeArithmeticHalf(BasicBlock& bb, u32 pc) {
const Instruction instr = {program_code[pc]};
const auto opcode = OpCode::Decode(instr);
UNIMPLEMENTED();
if (opcode->get().GetId() == OpCode::Id::HADD2_C ||
opcode->get().GetId() == OpCode::Id::HADD2_R) {
UNIMPLEMENTED_IF(instr.alu_half.ftz != 0);
}
UNIMPLEMENTED_IF_MSG(instr.alu_half.saturate != 0,
"Half float saturation not implemented");
const bool negate_a =
opcode->get().GetId() != OpCode::Id::HMUL2_R && instr.alu_half.negate_a != 0;
const bool negate_b =
opcode->get().GetId() != OpCode::Id::HMUL2_C && instr.alu_half.negate_b != 0;
const Node op_a = GetOperandAbsNegHalf(GetRegister(instr.gpr8), instr.alu_half.abs_a, negate_a);
// instr.alu_half.type_a
Node op_b = [&]() {
switch (opcode->get().GetId()) {
case OpCode::Id::HADD2_C:
case OpCode::Id::HMUL2_C:
return GetConstBuffer(instr.cbuf34.index, instr.cbuf34.offset);
case OpCode::Id::HADD2_R:
case OpCode::Id::HMUL2_R:
return GetRegister(instr.gpr20);
default:
UNREACHABLE();
return Immediate(0);
}
}();
op_b = GetOperandAbsNegHalf(op_b, instr.alu_half.abs_b, negate_b);
Node value = [&]() {
MetaHalfArithmetic meta{true, {instr.alu_half_imm.type_a, instr.alu_half.type_b}};
switch (opcode->get().GetId()) {
case OpCode::Id::HADD2_C:
case OpCode::Id::HADD2_R:
return Operation(OperationCode::HAdd, meta, op_a, op_b);
case OpCode::Id::HMUL2_C:
case OpCode::Id::HMUL2_R:
return Operation(OperationCode::HMul, meta, op_a, op_b);
default:
UNIMPLEMENTED_MSG("Unhandled half float instruction: {}", opcode->get().GetName());
return Immediate(0);
}
}();
value = HalfMerge(GetRegister(instr.gpr0), value, instr.alu_half.merge);
SetRegister(bb, instr.gpr0, value);
return pc;
}