diff options
Diffstat (limited to 'src/shader_recompiler/frontend/maxwell/translate/impl/surface_load_store.cpp')
-rw-r--r-- | src/shader_recompiler/frontend/maxwell/translate/impl/surface_load_store.cpp | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/surface_load_store.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/surface_load_store.cpp new file mode 100644 index 000000000..681220a8d --- /dev/null +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/surface_load_store.cpp @@ -0,0 +1,281 @@ +// Copyright 2021 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include <array> +#include <bit> + +#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 Type : u64 { + _1D, + BUFFER_1D, + ARRAY_1D, + _2D, + ARRAY_2D, + _3D, +}; + +constexpr unsigned R = 1 << 0; +constexpr unsigned G = 1 << 1; +constexpr unsigned B = 1 << 2; +constexpr unsigned A = 1 << 3; + +constexpr std::array MASK{ + 0U, // + R, // + G, // + R | G, // + B, // + R | B, // + G | B, // + R | G | B, // + A, // + R | A, // + G | A, // + R | G | A, // + B | A, // + R | B | A, // + G | B | A, // + R | G | B | A, // +}; + +enum class Size : u64 { + U8, + S8, + U16, + S16, + B32, + B64, + B128, +}; + +enum class Clamp : u64 { + IGN, + Default, + TRAP, +}; + +// https://docs.nvidia.com/cuda/parallel-thread-execution/index.html#cache-operators +enum class LoadCache : u64 { + CA, // Cache at all levels, likely to be accessed again + CG, // Cache at global level (L2 and below, not L1) + CI, // ??? + CV, // Don't cache and fetch again (volatile) +}; + +enum class StoreCache : u64 { + WB, // Cache write-back all coherent levels + CG, // Cache at global level (L2 and below, not L1) + CS, // Cache streaming, likely to be accessed once + WT, // Cache write-through (to system memory, volatile?) +}; + +ImageFormat Format(Size size) { + switch (size) { + case Size::U8: + return ImageFormat::R8_UINT; + case Size::S8: + return ImageFormat::R8_SINT; + case Size::U16: + return ImageFormat::R16_UINT; + case Size::S16: + return ImageFormat::R16_SINT; + case Size::B32: + return ImageFormat::R32_UINT; + case Size::B64: + return ImageFormat::R32G32_UINT; + case Size::B128: + return ImageFormat::R32G32B32A32_UINT; + } + throw NotImplementedException("Invalid size {}", size); +} + +int SizeInRegs(Size size) { + switch (size) { + case Size::U8: + case Size::S8: + case Size::U16: + case Size::S16: + case Size::B32: + return 1; + case Size::B64: + return 2; + case Size::B128: + return 4; + } + throw NotImplementedException("Invalid size {}", size); +} + +TextureType GetType(Type type) { + switch (type) { + case Type::_1D: + return TextureType::Color1D; + case Type::BUFFER_1D: + return TextureType::Buffer; + case Type::ARRAY_1D: + return TextureType::ColorArray1D; + case Type::_2D: + return TextureType::Color2D; + case Type::ARRAY_2D: + return TextureType::ColorArray2D; + case Type::_3D: + return TextureType::Color3D; + } + throw NotImplementedException("Invalid type {}", type); +} + +IR::Value MakeCoords(TranslatorVisitor& v, IR::Reg reg, Type type) { + const auto array{[&](int index) { + return v.ir.BitFieldExtract(v.X(reg + index), v.ir.Imm32(0), v.ir.Imm32(16)); + }}; + switch (type) { + case Type::_1D: + case Type::BUFFER_1D: + return v.X(reg); + case Type::ARRAY_1D: + return v.ir.CompositeConstruct(v.X(reg), array(1)); + case Type::_2D: + return v.ir.CompositeConstruct(v.X(reg), v.X(reg + 1)); + case Type::ARRAY_2D: + return v.ir.CompositeConstruct(v.X(reg), v.X(reg + 1), array(2)); + case Type::_3D: + return v.ir.CompositeConstruct(v.X(reg), v.X(reg + 1), v.X(reg + 2)); + } + throw NotImplementedException("Invalid type {}", type); +} + +unsigned SwizzleMask(u64 swizzle) { + if (swizzle == 0 || swizzle >= MASK.size()) { + throw NotImplementedException("Invalid swizzle {}", swizzle); + } + return MASK[swizzle]; +} + +IR::Value MakeColor(IR::IREmitter& ir, IR::Reg reg, int num_regs) { + std::array<IR::U32, 4> colors; + for (int i = 0; i < num_regs; ++i) { + colors[static_cast<size_t>(i)] = ir.GetReg(reg + i); + } + for (int i = num_regs; i < 4; ++i) { + colors[static_cast<size_t>(i)] = ir.Imm32(0); + } + return ir.CompositeConstruct(colors[0], colors[1], colors[2], colors[3]); +} +} // Anonymous namespace + +void TranslatorVisitor::SULD(u64 insn) { + union { + u64 raw; + BitField<51, 1, u64> is_bound; + BitField<52, 1, u64> d; + BitField<23, 1, u64> ba; + BitField<33, 3, Type> type; + BitField<24, 2, LoadCache> cache; + BitField<20, 3, Size> size; // .D + BitField<20, 4, u64> swizzle; // .P + BitField<49, 2, Clamp> clamp; + BitField<0, 8, IR::Reg> dest_reg; + BitField<8, 8, IR::Reg> coord_reg; + BitField<36, 13, u64> bound_offset; // is_bound + BitField<39, 8, IR::Reg> bindless_reg; // !is_bound + } const suld{insn}; + + if (suld.clamp != Clamp::IGN) { + throw NotImplementedException("Clamp {}", suld.clamp.Value()); + } + if (suld.cache != LoadCache::CA && suld.cache != LoadCache::CG) { + throw NotImplementedException("Cache {}", suld.cache.Value()); + } + const bool is_typed{suld.d != 0}; + if (is_typed && suld.ba != 0) { + throw NotImplementedException("BA"); + } + + const ImageFormat format{is_typed ? Format(suld.size) : ImageFormat::Typeless}; + const TextureType type{GetType(suld.type)}; + const IR::Value coords{MakeCoords(*this, suld.coord_reg, suld.type)}; + const IR::U32 handle{suld.is_bound != 0 ? ir.Imm32(static_cast<u32>(suld.bound_offset * 4)) + : X(suld.bindless_reg)}; + IR::TextureInstInfo info{}; + info.type.Assign(type); + info.image_format.Assign(format); + + const IR::Value result{ir.ImageRead(handle, coords, info)}; + IR::Reg dest_reg{suld.dest_reg}; + if (is_typed) { + const int num_regs{SizeInRegs(suld.size)}; + for (int i = 0; i < num_regs; ++i) { + X(dest_reg + i, IR::U32{ir.CompositeExtract(result, static_cast<size_t>(i))}); + } + } else { + const unsigned mask{SwizzleMask(suld.swizzle)}; + const int bits{std::popcount(mask)}; + if (!IR::IsAligned(dest_reg, bits == 3 ? 4 : static_cast<size_t>(bits))) { + throw NotImplementedException("Unaligned destination register"); + } + for (unsigned component = 0; component < 4; ++component) { + if (((mask >> component) & 1) == 0) { + continue; + } + X(dest_reg, IR::U32{ir.CompositeExtract(result, component)}); + ++dest_reg; + } + } +} + +void TranslatorVisitor::SUST(u64 insn) { + union { + u64 raw; + BitField<51, 1, u64> is_bound; + BitField<52, 1, u64> d; + BitField<23, 1, u64> ba; + BitField<33, 3, Type> type; + BitField<24, 2, StoreCache> cache; + BitField<20, 3, Size> size; // .D + BitField<20, 4, u64> swizzle; // .P + BitField<49, 2, Clamp> clamp; + BitField<0, 8, IR::Reg> data_reg; + BitField<8, 8, IR::Reg> coord_reg; + BitField<36, 13, u64> bound_offset; // is_bound + BitField<39, 8, IR::Reg> bindless_reg; // !is_bound + } const sust{insn}; + + if (sust.clamp != Clamp::IGN) { + throw NotImplementedException("Clamp {}", sust.clamp.Value()); + } + if (sust.cache != StoreCache::WB && sust.cache != StoreCache::CG) { + throw NotImplementedException("Cache {}", sust.cache.Value()); + } + const bool is_typed{sust.d != 0}; + if (is_typed && sust.ba != 0) { + throw NotImplementedException("BA"); + } + const ImageFormat format{is_typed ? Format(sust.size) : ImageFormat::Typeless}; + const TextureType type{GetType(sust.type)}; + const IR::Value coords{MakeCoords(*this, sust.coord_reg, sust.type)}; + const IR::U32 handle{sust.is_bound != 0 ? ir.Imm32(static_cast<u32>(sust.bound_offset * 4)) + : X(sust.bindless_reg)}; + IR::TextureInstInfo info{}; + info.type.Assign(type); + info.image_format.Assign(format); + + IR::Value color; + if (is_typed) { + color = MakeColor(ir, sust.data_reg, SizeInRegs(sust.size)); + } else { + const unsigned mask{SwizzleMask(sust.swizzle)}; + if (mask != 0xf) { + throw NotImplementedException("Non-full mask"); + } + color = MakeColor(ir, sust.data_reg, 4); + } + ir.ImageWrite(handle, coords, color, info); +} + +} // namespace Shader::Maxwell |