diff options
Diffstat (limited to 'src/shader_recompiler/frontend/maxwell/translate/impl/texture_fetch.cpp')
-rw-r--r-- | src/shader_recompiler/frontend/maxwell/translate/impl/texture_fetch.cpp | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/texture_fetch.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/texture_fetch.cpp new file mode 100644 index 000000000..0046b5edd --- /dev/null +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/texture_fetch.cpp @@ -0,0 +1,236 @@ +// 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 Blod : u64 { + None, + LZ, + LB, + LL, + INVALIDBLOD4, + INVALIDBLOD5, + LBA, + LLA, +}; + +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) { + const auto read_array{[&]() -> IR::F32 { return v.ir.ConvertUToF(32, 16, v.X(reg)); }}; + switch (type) { + case TextureType::_1D: + return v.F(reg); + case TextureType::ARRAY_1D: + return v.ir.CompositeConstruct(v.F(reg + 1), read_array()); + 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), read_array()); + 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), read_array()); + } + throw NotImplementedException("Invalid texture type {}", type); +} + +IR::F32 MakeLod(TranslatorVisitor& v, IR::Reg& reg, Blod blod) { + switch (blod) { + case Blod::None: + return v.ir.Imm32(0.0f); + case Blod::LZ: + return v.ir.Imm32(0.0f); + case Blod::LB: + case Blod::LL: + case Blod::LBA: + case Blod::LLA: + return v.F(reg++); + case Blod::INVALIDBLOD4: + case Blod::INVALIDBLOD5: + break; + } + throw NotImplementedException("Invalid blod {}", blod); +} + +IR::Value MakeOffset(TranslatorVisitor& v, IR::Reg& reg, TextureType type) { + const IR::U32 value{v.X(reg++)}; + switch (type) { + case TextureType::_1D: + case TextureType::ARRAY_1D: + return v.ir.BitFieldExtract(value, v.ir.Imm32(0), v.ir.Imm32(4), true); + case TextureType::_2D: + case TextureType::ARRAY_2D: + return v.ir.CompositeConstruct( + v.ir.BitFieldExtract(value, v.ir.Imm32(0), v.ir.Imm32(4), true), + v.ir.BitFieldExtract(value, v.ir.Imm32(4), v.ir.Imm32(4), true)); + case TextureType::_3D: + case TextureType::ARRAY_3D: + return v.ir.CompositeConstruct( + v.ir.BitFieldExtract(value, v.ir.Imm32(0), v.ir.Imm32(4), true), + v.ir.BitFieldExtract(value, v.ir.Imm32(4), v.ir.Imm32(4), true), + v.ir.BitFieldExtract(value, v.ir.Imm32(8), v.ir.Imm32(4), true)); + case TextureType::CUBE: + case TextureType::ARRAY_CUBE: + throw NotImplementedException("Illegal offset on CUBE sample"); + } + throw NotImplementedException("Invalid texture type {}", type); +} + +bool HasExplicitLod(Blod blod) { + switch (blod) { + case Blod::LL: + case Blod::LLA: + case Blod::LZ: + return true; + default: + return false; + } +} + +void Impl(TranslatorVisitor& v, u64 insn, bool aoffi, Blod blod, bool lc, + std::optional<u32> cbuf_offset) { + union { + u64 raw; + BitField<35, 1, u64> ndv; + BitField<49, 1, u64> nodep; + BitField<50, 1, u64> dc; + 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> meta_reg; + BitField<28, 3, TextureType> type; + BitField<31, 4, u64> mask; + } const tex{insn}; + + if (lc) { + throw NotImplementedException("LC"); + } + const IR::Value coords{MakeCoords(v, tex.coord_reg, tex.type)}; + + IR::Reg meta_reg{tex.meta_reg}; + IR::Value handle; + IR::Value offset; + IR::F32 dref; + IR::F32 lod_clamp; + if (cbuf_offset) { + handle = v.ir.Imm32(*cbuf_offset); + } else { + handle = v.X(meta_reg++); + } + const IR::F32 lod{MakeLod(v, meta_reg, blod)}; + if (aoffi) { + offset = MakeOffset(v, meta_reg, tex.type); + } + if (tex.dc != 0) { + dref = v.F(meta_reg++); + } + IR::TextureInstInfo info{}; + info.type.Assign(GetType(tex.type)); + info.is_depth.Assign(tex.dc != 0 ? 1 : 0); + info.has_bias.Assign(blod == Blod::LB || blod == Blod::LBA ? 1 : 0); + info.has_lod_clamp.Assign(lc ? 1 : 0); + + const IR::Value sample{[&]() -> IR::Value { + if (tex.dc == 0) { + if (HasExplicitLod(blod)) { + return v.ir.ImageSampleExplicitLod(handle, coords, lod, offset, info); + } else { + return v.ir.ImageSampleImplicitLod(handle, coords, lod, offset, lod_clamp, info); + } + } + if (HasExplicitLod(blod)) { + return v.ir.ImageSampleDrefExplicitLod(handle, coords, dref, lod, offset, info); + } else { + return v.ir.ImageSampleDrefImplicitLod(handle, coords, dref, lod, offset, lod_clamp, + info); + } + }()}; + + IR::Reg dest_reg{tex.dest_reg}; + for (int element = 0; element < 4; ++element) { + if (((tex.mask >> element) & 1) == 0) { + continue; + } + IR::F32 value; + if (tex.dc != 0) { + value = element < 3 ? IR::F32{sample} : v.ir.Imm32(1.0f); + } else { + value = IR::F32{v.ir.CompositeExtract(sample, static_cast<size_t>(element))}; + } + v.F(dest_reg, value); + ++dest_reg; + } + if (tex.sparse_pred != IR::Pred::PT) { + v.ir.SetPred(tex.sparse_pred, v.ir.LogicalNot(v.ir.GetSparseFromOp(sample))); + } +} +} // Anonymous namespace + +void TranslatorVisitor::TEX(u64 insn) { + union { + u64 raw; + BitField<54, 1, u64> aoffi; + BitField<55, 3, Blod> blod; + BitField<58, 1, u64> lc; + BitField<36, 13, u64> cbuf_offset; + } const tex{insn}; + + Impl(*this, insn, tex.aoffi != 0, tex.blod, tex.lc != 0, static_cast<u32>(tex.cbuf_offset * 4)); +} + +void TranslatorVisitor::TEX_b(u64 insn) { + union { + u64 raw; + BitField<36, 1, u64> aoffi; + BitField<37, 3, Blod> blod; + BitField<40, 1, u64> lc; + } const tex{insn}; + + Impl(*this, insn, tex.aoffi != 0, tex.blod, tex.lc != 0, std::nullopt); +} + +} // namespace Shader::Maxwell |