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shader: Add denorm flush support

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This commit is contained in:
ReinUsesLisp 2021-02-20 03:30:13 -03:00 • committed by ameerj
parent 6db69990da
commit e2bc05b17d
20 changed files with 260 additions and 93 deletions
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19
src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_conversion_integer.cpp
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@ -81,17 +81,28 @@ void TranslateF2I(TranslatorVisitor& v, u64 insn, const IR::F16F32F64& src_a) {
// F2I is used to convert from a floating point value to an integer
const F2I f2i{insn};
const bool denorm_cares{f2i.src_format != SrcFormat::F16 && f2i.src_format != SrcFormat::F64 &&
f2i.dest_format != DestFormat::I64};
IR::FmzMode fmz_mode{IR::FmzMode::DontCare};
if (denorm_cares) {
fmz_mode = f2i.ftz != 0 ? IR::FmzMode::FTZ : IR::FmzMode::None;
}
const IR::FpControl fp_control{
.no_contraction{true},
.rounding{IR::FpRounding::DontCare},
.fmz_mode{fmz_mode},
};
const IR::F16F32F64 op_a{v.ir.FPAbsNeg(src_a, f2i.abs != 0, f2i.neg != 0)};
const IR::F16F32F64 rounded_value{[&] {
switch (f2i.rounding) {
case Rounding::Round:
return v.ir.FPRoundEven(op_a);
return v.ir.FPRoundEven(op_a, fp_control);
case Rounding::Floor:
return v.ir.FPFloor(op_a);
return v.ir.FPFloor(op_a, fp_control);
case Rounding::Ceil:
return v.ir.FPCeil(op_a);
return v.ir.FPCeil(op_a, fp_control);
case Rounding::Trunc:
return v.ir.FPTrunc(op_a);
return v.ir.FPTrunc(op_a, fp_control);
default:
throw NotImplementedException("Invalid F2I rounding {}", f2i.rounding.Value());
}