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shader: Implement TXD

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This commit is contained in:
FernandoS27 2021-03-29 02:52:52 +02:00 committed by ameerj
parent d5bfc63088
commit 630273b629
4 changed files with 183 additions and 10 deletions
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1
src/shader_recompiler/CMakeLists.txt
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@ -133,6 +133,7 @@ add_library(shader_recompiler STATIC
frontend/maxwell/translate/impl/texture_fetch_swizzled.cpp
frontend/maxwell/translate/impl/texture_gather_swizzled.cpp
frontend/maxwell/translate/impl/texture_gather.cpp
frontend/maxwell/translate/impl/texture_gradient.cpp
frontend/maxwell/translate/impl/texture_load_swizzled.cpp
frontend/maxwell/translate/impl/texture_load.cpp
frontend/maxwell/translate/impl/texture_mipmap_level.cpp

4
src/shader_recompiler/frontend/maxwell/maxwell.inc
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@ -261,8 +261,8 @@ INST(TLDS, "TLDS", "1101 -01- ---- ----")
INST(TMML, "TMML", "1101 1111 0101 1---")
INST(TMML_b, "TMML (b)", "1101 1111 0110 0---")
INST(TXA, "TXA", "1101 1111 0100 0---")
INST(TXD, "TXD", "1101 1110 0011 10--")
INST(TXD_b, "TXD (b)", "1101 1110 0111 10--")
INST(TXD, "TXD", "1101 1110 00-- ----")
INST(TXD_b, "TXD (b)", "1101 1110 01-- ----")
INST(TXQ, "TXQ", "1101 1111 0100 1---")
INST(TXQ_b, "TXQ (b)", "1101 1111 0101 0---")
INST(VABSDIFF, "VABSDIFF", "0101 0100 ---- ----")

8
src/shader_recompiler/frontend/maxwell/translate/impl/not_implemented.cpp
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@ -317,14 +317,6 @@ void TranslatorVisitor::TXA(u64) {
ThrowNotImplemented(Opcode::TXA);
}
void TranslatorVisitor::TXD(u64) {
ThrowNotImplemented(Opcode::TXD);
}
void TranslatorVisitor::TXD_b(u64) {
ThrowNotImplemented(Opcode::TXD_b);
}
void TranslatorVisitor::VABSDIFF(u64) {
ThrowNotImplemented(Opcode::VABSDIFF);
}

180
src/shader_recompiler/frontend/maxwell/translate/impl/texture_gradient.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 <optional>
#include "common/bit_field.h"
#include "common/common_types.h"
#include "shader_recompiler/frontend/ir/modifiers.h"
#include "shader_recompiler/frontend/maxwell/translate/impl/impl.h"
namespace Shader::Maxwell {
namespace {
enum class TextureType : u64 {
_1D,
ARRAY_1D,
_2D,
ARRAY_2D,
_3D,
ARRAY_3D,
CUBE,
ARRAY_CUBE,
};
Shader::TextureType GetType(TextureType type, bool dc) {
switch (type) {
case TextureType::_1D:
return dc ? Shader::TextureType::Shadow1D : Shader::TextureType::Color1D;
case TextureType::ARRAY_1D:
return dc ? Shader::TextureType::ShadowArray1D : Shader::TextureType::ColorArray1D;
case TextureType::_2D:
return dc ? Shader::TextureType::Shadow2D : Shader::TextureType::Color2D;
case TextureType::ARRAY_2D:
return dc ? Shader::TextureType::ShadowArray2D : Shader::TextureType::ColorArray2D;
case TextureType::_3D:
return dc ? Shader::TextureType::Shadow3D : Shader::TextureType::Color3D;
case TextureType::ARRAY_3D:
throw NotImplementedException("3D array texture type");
case TextureType::CUBE:
return dc ? Shader::TextureType::ShadowCube : Shader::TextureType::ColorCube;
case TextureType::ARRAY_CUBE:
return dc ? Shader::TextureType::ShadowArrayCube : Shader::TextureType::ColorArrayCube;
}
throw NotImplementedException("Invalid texture type {}", type);
}
IR::Value MakeOffset(TranslatorVisitor& v, IR::Reg reg, bool has_lod_clamp) {
const IR::U32 value{v.X(reg)};
const u32 base = has_lod_clamp ? 12 : 16;
return v.ir.CompositeConstruct(
v.ir.BitFieldExtract(value, v.ir.Imm32(base), v.ir.Imm32(4), true),
v.ir.BitFieldExtract(value, v.ir.Imm32(base + 4), v.ir.Imm32(4), true));
}
void Impl(TranslatorVisitor& v, u64 insn, bool is_bindless) {
union {
u64 raw;
BitField<49, 1, u64> nodep;
BitField<35, 1, u64> aoffi;
BitField<50, 1, u64> lc;
BitField<51, 3, IR::Pred> sparse_pred;
BitField<0, 8, IR::Reg> dest_reg;
BitField<8, 8, IR::Reg> coord_reg;
BitField<20, 8, IR::Reg> derivate_reg;
BitField<28, 3, TextureType> type;
BitField<31, 4, u64> mask;
BitField<36, 13, u64> cbuf_offset;
} const txd{insn};
const bool has_lod_clamp = txd.lc != 0;
if (has_lod_clamp) {
throw NotImplementedException("TXD.LC - CLAMP is not implemented");
}
IR::Value coords;
u32 num_derivates;
IR::Reg base_reg = txd.coord_reg;
IR::Reg last_reg;
IR::Value handle;
if (!is_bindless) {
handle = v.ir.Imm32(static_cast<u32>(txd.cbuf_offset.Value() * 4));
} else {
handle = v.X(base_reg++);
}
const auto read_array{[&]() -> IR::F32 {
return v.ir.ConvertUToF(32, 16,
v.ir.BitFieldExtract(v.X(last_reg), v.ir.Imm32(0),
v.ir.Imm32(has_lod_clamp ? 12 : 16)));
}};
switch (txd.type) {
case TextureType::_1D: {
coords = v.F(base_reg);
num_derivates = 1;
last_reg = base_reg + 1;
break;
}
case TextureType::ARRAY_1D: {
last_reg = base_reg + 1;
coords = v.ir.CompositeConstruct(v.F(base_reg), read_array());
num_derivates = 1;
break;
}
case TextureType::_2D: {
last_reg = base_reg + 2;
coords = v.ir.CompositeConstruct(v.F(base_reg), v.F(base_reg + 1));
num_derivates = 2;
break;
}
case TextureType::ARRAY_2D: {
last_reg = base_reg + 2;
coords = v.ir.CompositeConstruct(v.F(base_reg), v.F(base_reg + 1), read_array());
num_derivates = 2;
break;
}
default:
throw NotImplementedException("Invalid texture type");
}
const IR::Reg derivate_reg{txd.derivate_reg};
IR::Value derivates;
switch (num_derivates) {
case 1: {
derivates = v.ir.CompositeConstruct(v.F(derivate_reg), v.F(derivate_reg + 1));
break;
}
case 2: {
derivates = v.ir.CompositeConstruct(v.F(derivate_reg), v.F(derivate_reg + 1),
v.F(derivate_reg + 2), v.F(derivate_reg + 3));
break;
}
default:
throw NotImplementedException("Invalid texture type");
}
IR::Value offset;
if (txd.aoffi != 0) {
offset = MakeOffset(v, last_reg, has_lod_clamp);
}
IR::F32 lod_clamp;
if (has_lod_clamp) {
const IR::F32 conv4_8fixp_f = v.ir.Imm32(Common::BitCast<f32>(0x3b800000U));
const IR::F32 tmp = v.ir.ConvertUToF(
32, 16, v.ir.BitFieldExtract(v.X(last_reg), v.ir.Imm32(20), v.ir.Imm32(12)));
lod_clamp = v.ir.FPMul(tmp, conv4_8fixp_f);
}
IR::TextureInstInfo info{};
info.type.Assign(GetType(txd.type, false));
info.num_derivates.Assign(num_derivates);
info.has_lod_clamp.Assign(has_lod_clamp ? 1 : 0);
const IR::Value sample{[&]() -> IR::Value {
return v.ir.ImageGradient(handle, coords, derivates, offset, lod_clamp, info);
}()};
IR::Reg dest_reg{txd.dest_reg};
for (size_t element = 0; element < 4; ++element) {
if (((txd.mask >> element) & 1) == 0) {
continue;
}
v.F(dest_reg, IR::F32{v.ir.CompositeExtract(sample, element)});
++dest_reg;
}
if (txd.sparse_pred != IR::Pred::PT) {
v.ir.SetPred(txd.sparse_pred, v.ir.LogicalNot(v.ir.GetSparseFromOp(sample)));
}
}
} // Anonymous namespace
void TranslatorVisitor::TXD(u64 insn) {
Impl(*this, insn, false);
}
void TranslatorVisitor::TXD_b(u64 insn) {
Impl(*this, insn, true);
}
} // namespace Shader::Maxwell