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gl_shader_decompiler: Implement non-immediate HADD2 and HMUL2 instructions

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This commit is contained in:
ReinUsesLisp 2018-10-15 02:04:31 -03:00
parent 08d751d882
commit d46e2a6e7a
2 changed files with 75 additions and 0 deletions
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25
src/video_core/engines/shader_bytecode.h
View file

@ -573,6 +573,22 @@ union Instruction {
BitField<49, 1, u64> negate_a;
} alu_integer;
union {
BitField<39, 1, u64> ftz;
BitField<32, 1, u64> saturate;
BitField<49, 2, HalfMerge> merge;
BitField<43, 1, u64> negate_a;
BitField<44, 1, u64> abs_a;
BitField<47, 2, HalfType> type_a;
BitField<31, 1, u64> negate_b;
BitField<30, 1, u64> abs_b;
BitField<47, 2, HalfType> type_b;
BitField<35, 2, HalfType> type_c;
} alu_half;
union {
BitField<40, 1, u64> invert;
} popc;
@ -1165,6 +1181,10 @@ public:
LEA_RZ,
LEA_IMM,
LEA_HI,
HADD2_C,
HADD2_R,
HMUL2_C,
HMUL2_R,
POPC_C,
POPC_R,
POPC_IMM,
@ -1238,6 +1258,7 @@ public:
ArithmeticImmediate,
ArithmeticInteger,
ArithmeticIntegerImmediate,
ArithmeticHalf,
Bfe,
Shift,
Ffma,
@ -1409,6 +1430,10 @@ private:
INST("001101101101----", Id::LEA_IMM, Type::ArithmeticInteger, "LEA_IMM"),
INST("010010111101----", Id::LEA_RZ, Type::ArithmeticInteger, "LEA_RZ"),
INST("00011000--------", Id::LEA_HI, Type::ArithmeticInteger, "LEA_HI"),
INST("0111101-1-------", Id::HADD2_C, Type::ArithmeticHalf, "HADD2_C"),
INST("0101110100010---", Id::HADD2_R, Type::ArithmeticHalf, "HADD2_R"),
INST("0111100-1-------", Id::HMUL2_C, Type::ArithmeticHalf, "HMUL2_C"),
INST("0101110100001---", Id::HMUL2_R, Type::ArithmeticHalf, "HMUL2_R"),
INST("0101000010000---", Id::MUFU, Type::Arithmetic, "MUFU"),
INST("0100110010010---", Id::RRO_C, Type::Arithmetic, "RRO_C"),
INST("0101110010010---", Id::RRO_R, Type::Arithmetic, "RRO_R"),

50
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
View file

@ -1827,6 +1827,56 @@ private:
break;
}
case OpCode::Type::ArithmeticHalf: {
if (opcode->GetId() == OpCode::Id::HADD2_C || opcode->GetId() == OpCode::Id::HADD2_R) {
ASSERT_MSG(instr.alu_half.ftz == 0, "Unimplemented");
}
const bool negate_a =
opcode->GetId() != OpCode::Id::HMUL2_R && instr.alu_half.negate_a != 0;
const bool negate_b =
opcode->GetId() != OpCode::Id::HMUL2_C && instr.alu_half.negate_b != 0;
const std::string op_a =
GetHalfFloat(regs.GetRegisterAsInteger(instr.gpr8, 0, false), instr.alu_half.type_a,
instr.alu_half.abs_a != 0, negate_a);
std::string op_b;
switch (opcode->GetId()) {
case OpCode::Id::HADD2_C:
case OpCode::Id::HMUL2_C:
op_b = regs.GetUniform(instr.cbuf34.index, instr.cbuf34.offset,
GLSLRegister::Type::UnsignedInteger);
break;
case OpCode::Id::HADD2_R:
case OpCode::Id::HMUL2_R:
op_b = regs.GetRegisterAsInteger(instr.gpr20, 0, false);
break;
default:
UNREACHABLE();
op_b = "0";
break;
}
op_b = GetHalfFloat(op_b, instr.alu_half.type_b, instr.alu_half.abs_b != 0, negate_b);
const std::string result = [&]() {
switch (opcode->GetId()) {
case OpCode::Id::HADD2_C:
case OpCode::Id::HADD2_R:
return '(' + op_a + " + " + op_b + ')';
case OpCode::Id::HMUL2_C:
case OpCode::Id::HMUL2_R:
return '(' + op_a + " * " + op_b + ')';
default:
LOG_CRITICAL(HW_GPU, "Unhandled half float instruction: {}", opcode->GetName());
UNREACHABLE();
return std::string("0");
}
}();
regs.SetRegisterToHalfFloat(instr.gpr0, 0, result, instr.alu_half.merge, 1, 1,
instr.alu_half.saturate != 0);
break;
}
case OpCode::Type::Ffma: {
const std::string op_a = regs.GetRegisterAsFloat(instr.gpr8);
std::string op_b = instr.ffma.negate_b ? "-" : "";