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shader: Implement F2F

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This commit is contained in:
FernandoS27 2021-03-21 09:32:16 +01:00 committed by ameerj
parent 8b3b9c3371
commit a62f04efab
6 changed files with 192 additions and 20 deletions
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1
src/shader_recompiler/CMakeLists.txt
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@ -72,6 +72,7 @@ add_library(shader_recompiler STATIC
frontend/maxwell/translate/impl/floating_point_add.cpp
frontend/maxwell/translate/impl/floating_point_compare.cpp
frontend/maxwell/translate/impl/floating_point_compare_and_set.cpp
frontend/maxwell/translate/impl/floating_point_conversion_floating_point.cpp
frontend/maxwell/translate/impl/floating_point_conversion_integer.cpp
frontend/maxwell/translate/impl/floating_point_fused_multiply_add.cpp
frontend/maxwell/translate/impl/floating_point_min_max.cpp

12
src/shader_recompiler/frontend/ir/ir_emitter.cpp
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@ -1361,7 +1361,7 @@ U32U64 IREmitter::UConvert(size_t result_bitsize, const U32U64& value) {
throw NotImplementedException("Conversion from {} to {} bits", value.Type(), result_bitsize);
}
F16F32F64 IREmitter::FPConvert(size_t result_bitsize, const F16F32F64& value) {
F16F32F64 IREmitter::FPConvert(size_t result_bitsize, const F16F32F64& value, FpControl control) {
switch (result_bitsize) {
case 16:
switch (value.Type()) {
@ -1369,7 +1369,7 @@ F16F32F64 IREmitter::FPConvert(size_t result_bitsize, const F16F32F64& value) {
// Nothing to do
return value;
case Type::F32:
return Inst<F16>(Opcode::ConvertF16F32, value);
return Inst<F16>(Opcode::ConvertF16F32, Flags{control}, value);
case Type::F64:
throw LogicError("Illegal conversion from F64 to F16");
default:
@ -1379,12 +1379,12 @@ F16F32F64 IREmitter::FPConvert(size_t result_bitsize, const F16F32F64& value) {
case 32:
switch (value.Type()) {
case Type::F16:
return Inst<F32>(Opcode::ConvertF32F16, value);
return Inst<F32>(Opcode::ConvertF32F16, Flags{control}, value);
case Type::F32:
// Nothing to do
return value;
case Type::F64:
return Inst<F64>(Opcode::ConvertF32F64, value);
return Inst<F32>(Opcode::ConvertF32F64, Flags{control}, value);
default:
break;
}
@ -1394,10 +1394,10 @@ F16F32F64 IREmitter::FPConvert(size_t result_bitsize, const F16F32F64& value) {
case Type::F16:
throw LogicError("Illegal conversion from F16 to F64");
case Type::F32:
return Inst<F64>(Opcode::ConvertF64F32, Flags{control}, value);
case Type::F64:
// Nothing to do
return value;
case Type::F64:
return Inst<F64>(Opcode::ConvertF32F64, value);
default:
break;
}

3
src/shader_recompiler/frontend/ir/ir_emitter.h
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@ -216,7 +216,8 @@ public:
const Value& value);
[[nodiscard]] U32U64 UConvert(size_t result_bitsize, const U32U64& value);
[[nodiscard]] F16F32F64 FPConvert(size_t result_bitsize, const F16F32F64& value);
[[nodiscard]] F16F32F64 FPConvert(size_t result_bitsize, const F16F32F64& value,
FpControl control = {});
[[nodiscard]] Value ImageSampleImplicitLod(const Value& handle, const Value& coords,
const F32& bias, const Value& offset,

180
src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_conversion_floating_point.cpp Normal file
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@ -0,0 +1,180 @@
// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "shader_recompiler/frontend/maxwell/translate/impl/common_encoding.h"
#include "shader_recompiler/frontend/maxwell/translate/impl/half_floating_point_helper.h"
namespace Shader::Maxwell {
namespace {
enum class FloatFormat : u64 {
F16 = 1,
F32 = 2,
F64 = 3,
};
enum class RoundingOp : u64 {
None = 0,
Pass = 3,
Round = 8,
Floor = 9,
Ceil = 10,
Trunc = 11,
};
[[nodiscard]] u32 WidthSize(FloatFormat width) {
switch (width) {
case FloatFormat::F16:
return 16;
case FloatFormat::F32:
return 32;
case FloatFormat::F64:
return 64;
default:
throw NotImplementedException("Invalid width {}", width);
}
}
void F2F(TranslatorVisitor& v, u64 insn, const IR::F16F32F64& src_a, bool abs) {
union {
u64 insn;
BitField<0, 8, IR::Reg> dest_reg;
BitField<44, 1, u64> ftz;
BitField<45, 1, u64> neg;
BitField<50, 1, u64> sat;
BitField<39, 4, u64> rounding_op;
BitField<39, 2, FpRounding> rounding;
BitField<10, 2, FloatFormat> src_size;
BitField<8, 2, FloatFormat> dst_size;
[[nodiscard]] RoundingOp RoundingOperation() const {
constexpr u64 rounding_mask = 0x0B;
return static_cast<RoundingOp>(rounding_op.Value() & rounding_mask);
}
} const f2f{insn};
IR::F16F32F64 input{v.ir.FPAbsNeg(src_a, abs, f2f.neg != 0)};
const bool any_fp64{f2f.src_size == FloatFormat::F64 || f2f.dst_size == FloatFormat::F64};
IR::FpControl fp_control{
.no_contraction{false},
.rounding{IR::FpRounding::DontCare},
.fmz_mode{f2f.ftz != 0 && !any_fp64 ? IR::FmzMode::FTZ : IR::FmzMode::None},
};
if (f2f.src_size != f2f.dst_size) {
fp_control.rounding = CastFpRounding(f2f.rounding);
input = v.ir.FPConvert(WidthSize(f2f.dst_size), input, fp_control);
} else {
switch (f2f.RoundingOperation()) {
case RoundingOp::None:
case RoundingOp::Pass:
// Make sure NANs are handled properly
switch (f2f.src_size) {
case FloatFormat::F16:
input = v.ir.FPAdd(input, v.ir.FPConvert(16, v.ir.Imm32(0.0f)), fp_control);
break;
case FloatFormat::F32:
input = v.ir.FPAdd(input, v.ir.Imm32(0.0f), fp_control);
break;
case FloatFormat::F64:
input = v.ir.FPAdd(input, v.ir.Imm64(0.0), fp_control);
break;
}
break;
case RoundingOp::Round:
input = v.ir.FPRoundEven(input, fp_control);
break;
case RoundingOp::Floor:
input = v.ir.FPFloor(input, fp_control);
break;
case RoundingOp::Ceil:
input = v.ir.FPCeil(input, fp_control);
break;
case RoundingOp::Trunc:
input = v.ir.FPTrunc(input, fp_control);
break;
default:
throw NotImplementedException("Unimplemented rounding mode {}", f2f.rounding.Value());
}
}
if (f2f.sat != 0 && !any_fp64) {
input = v.ir.FPSaturate(input);
}
switch (f2f.dst_size) {
case FloatFormat::F16: {
const IR::F16 imm{v.ir.FPConvert(16, v.ir.Imm32(0.0f))};
v.X(f2f.dest_reg, v.ir.PackFloat2x16(v.ir.CompositeConstruct(input, imm)));
break;
}
case FloatFormat::F32:
v.F(f2f.dest_reg, input);
break;
case FloatFormat::F64:
v.D(f2f.dest_reg, input);
break;
default:
throw NotImplementedException("Invalid dest format {}", f2f.dst_size.Value());
}
}
} // Anonymous namespace
void TranslatorVisitor::F2F_reg(u64 insn) {
union {
u64 insn;
BitField<49, 1, u64> abs;
BitField<10, 2, FloatFormat> src_size;
BitField<41, 1, u64> selector;
} const f2f{insn};
IR::F16F32F64 src_a;
switch (f2f.src_size) {
case FloatFormat::F16: {
auto [lhs_a, rhs_a]{Extract(ir, GetReg20(insn), Swizzle::H1_H0)};
src_a = f2f.selector != 0 ? rhs_a : lhs_a;
break;
}
case FloatFormat::F32:
src_a = GetFloatReg20(insn);
break;
case FloatFormat::F64:
src_a = GetDoubleReg20(insn);
break;
default:
throw NotImplementedException("Invalid dest format {}", f2f.src_size.Value());
}
F2F(*this, insn, src_a, f2f.abs != 0);
}
void TranslatorVisitor::F2F_cbuf(u64 insn) {
union {
u64 insn;
BitField<49, 1, u64> abs;
BitField<10, 2, FloatFormat> src_size;
BitField<41, 1, u64> selector;
} const f2f{insn};
IR::F16F32F64 src_a;
switch (f2f.src_size) {
case FloatFormat::F16: {
auto [lhs_a, rhs_a]{Extract(ir, GetCbuf(insn), Swizzle::H1_H0)};
src_a = f2f.selector != 0 ? rhs_a : lhs_a;
break;
}
case FloatFormat::F32:
src_a = GetFloatCbuf(insn);
break;
case FloatFormat::F64:
src_a = GetDoubleCbuf(insn);
break;
default:
throw NotImplementedException("Invalid dest format {}", f2f.src_size.Value());
}
F2F(*this, insn, src_a, f2f.abs != 0);
}
void TranslatorVisitor::F2F_imm([[maybe_unused]] u64 insn) {
throw NotImplementedException("Instruction");
}
} // namespace Shader::Maxwell

12
src/shader_recompiler/frontend/maxwell/translate/impl/not_implemented.cpp
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@ -117,18 +117,6 @@ void TranslatorVisitor::DSETP_imm(u64) {
ThrowNotImplemented(Opcode::DSETP_imm);
}
void TranslatorVisitor::F2F_reg(u64) {
ThrowNotImplemented(Opcode::F2F_reg);
}
void TranslatorVisitor::F2F_cbuf(u64) {
ThrowNotImplemented(Opcode::F2F_cbuf);
}
void TranslatorVisitor::F2F_imm(u64) {
ThrowNotImplemented(Opcode::F2F_imm);
}
void TranslatorVisitor::FCHK_reg(u64) {
ThrowNotImplemented(Opcode::FCHK_reg);
}

4
src/shader_recompiler/ir_opt/collect_shader_info_pass.cpp
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@ -404,7 +404,9 @@ void VisitFpModifiers(Info& info, IR::Inst& inst) {
case IR::Opcode::FPOrdLessThanEqual32:
case IR::Opcode::FPUnordLessThanEqual32:
case IR::Opcode::FPOrdGreaterThanEqual32:
case IR::Opcode::FPUnordGreaterThanEqual32: {
case IR::Opcode::FPUnordGreaterThanEqual32:
case IR::Opcode::ConvertF16F32:
case IR::Opcode::ConvertF64F32: {
const auto control{inst.Flags<IR::FpControl>()};
switch (control.fmz_mode) {
case IR::FmzMode::DontCare: