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// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#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) {
switch (type) {
case TextureType::_1D:
return Shader::TextureType::Color1D;
case TextureType::ARRAY_1D:
return Shader::TextureType::ColorArray1D;
case TextureType::_2D:
return Shader::TextureType::Color2D;
case TextureType::ARRAY_2D:
return Shader::TextureType::ColorArray2D;
case TextureType::_3D:
return Shader::TextureType::Color3D;
case TextureType::ARRAY_3D:
throw NotImplementedException("3D array texture type");
case TextureType::CUBE:
return Shader::TextureType::ColorCube;
case TextureType::ARRAY_CUBE:
return Shader::TextureType::ColorArrayCube;
}
throw NotImplementedException("Invalid texture type {}", type);
}
IR::Value MakeCoords(TranslatorVisitor& v, IR::Reg reg, TextureType type) {
// The ISA reads an array component here, but this is not needed on high level shading languages
// We are dropping this information.
switch (type) {
case TextureType::_1D:
return v.F(reg);
case TextureType::ARRAY_1D:
return v.F(reg + 1);
case TextureType::_2D:
return v.ir.CompositeConstruct(v.F(reg), v.F(reg + 1));
case TextureType::ARRAY_2D:
return v.ir.CompositeConstruct(v.F(reg + 1), v.F(reg + 2));
case TextureType::_3D:
return v.ir.CompositeConstruct(v.F(reg), v.F(reg + 1), v.F(reg + 2));
case TextureType::ARRAY_3D:
throw NotImplementedException("3D array texture type");
case TextureType::CUBE:
return v.ir.CompositeConstruct(v.F(reg), v.F(reg + 1), v.F(reg + 2));
case TextureType::ARRAY_CUBE:
return v.ir.CompositeConstruct(v.F(reg + 1), v.F(reg + 2), v.F(reg + 3));
}
throw NotImplementedException("Invalid texture type {}", type);
}
void Impl(TranslatorVisitor& v, u64 insn, bool is_bindless) {
union {
u64 raw;
BitField<49, 1, u64> nodep;
BitField<35, 1, u64> ndv;
BitField<0, 8, IR::Reg> dest_reg;
BitField<8, 8, IR::Reg> coord_reg;
BitField<20, 8, IR::Reg> meta_reg;
BitField<28, 3, TextureType> type;
BitField<31, 4, u64> mask;
BitField<36, 13, u64> cbuf_offset;
} const tmml{insn};
if ((tmml.mask & 0b1100) != 0) {
throw NotImplementedException("TMML BA results are not implemented");
}
const IR::Value coords{MakeCoords(v, tmml.coord_reg, tmml.type)};
IR::U32 handle;
IR::Reg meta_reg{tmml.meta_reg};
if (is_bindless) {
handle = v.X(meta_reg++);
} else {
handle = v.ir.Imm32(static_cast<u32>(tmml.cbuf_offset.Value() * 4));
}
IR::TextureInstInfo info{};
info.type.Assign(GetType(tmml.type));
const IR::Value sample{v.ir.ImageQueryLod(handle, coords, info)};
IR::Reg dest_reg{tmml.dest_reg};
for (size_t element = 0; element < 4; ++element) {
if (((tmml.mask >> element) & 1) == 0) {
continue;
}
IR::F32 value{v.ir.CompositeExtract(sample, element)};
if (element < 2) {
IR::U32 casted_value;
if (element == 0) {
casted_value = v.ir.ConvertFToU(32, value);
} else {
casted_value = v.ir.ConvertFToS(16, value);
}
v.X(dest_reg, v.ir.ShiftLeftLogical(casted_value, v.ir.Imm32(8)));
} else {
v.F(dest_reg, value);
}
++dest_reg;
}
}
} // Anonymous namespace
void TranslatorVisitor::TMML(u64 insn) {
Impl(*this, insn, false);
}
void TranslatorVisitor::TMML_b(u64 insn) {
Impl(*this, insn, true);
}
} // namespace Shader::Maxwell
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