diff options
Diffstat (limited to 'src/shader_recompiler/ir_opt/texture_pass.cpp')
| -rw-r--r-- | src/shader_recompiler/ir_opt/texture_pass.cpp | 523 |
1 files changed, 523 insertions, 0 deletions
diff --git a/src/shader_recompiler/ir_opt/texture_pass.cpp b/src/shader_recompiler/ir_opt/texture_pass.cpp new file mode 100644 index 000000000..44ad10d43 --- /dev/null +++ b/src/shader_recompiler/ir_opt/texture_pass.cpp @@ -0,0 +1,523 @@ +// Copyright 2021 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include <algorithm> +#include <bit> +#include <optional> + +#include <boost/container/small_vector.hpp> + +#include "shader_recompiler/environment.h" +#include "shader_recompiler/frontend/ir/basic_block.h" +#include "shader_recompiler/frontend/ir/breadth_first_search.h" +#include "shader_recompiler/frontend/ir/ir_emitter.h" +#include "shader_recompiler/ir_opt/passes.h" +#include "shader_recompiler/shader_info.h" + +namespace Shader::Optimization { +namespace { +struct ConstBufferAddr { + u32 index; + u32 offset; + u32 secondary_index; + u32 secondary_offset; + IR::U32 dynamic_offset; + u32 count; + bool has_secondary; +}; + +struct TextureInst { + ConstBufferAddr cbuf; + IR::Inst* inst; + IR::Block* block; +}; + +using TextureInstVector = boost::container::small_vector<TextureInst, 24>; + +constexpr u32 DESCRIPTOR_SIZE = 8; +constexpr u32 DESCRIPTOR_SIZE_SHIFT = static_cast<u32>(std::countr_zero(DESCRIPTOR_SIZE)); + +IR::Opcode IndexedInstruction(const IR::Inst& inst) { + switch (inst.GetOpcode()) { + case IR::Opcode::BindlessImageSampleImplicitLod: + case IR::Opcode::BoundImageSampleImplicitLod: + return IR::Opcode::ImageSampleImplicitLod; + case IR::Opcode::BoundImageSampleExplicitLod: + case IR::Opcode::BindlessImageSampleExplicitLod: + return IR::Opcode::ImageSampleExplicitLod; + case IR::Opcode::BoundImageSampleDrefImplicitLod: + case IR::Opcode::BindlessImageSampleDrefImplicitLod: + return IR::Opcode::ImageSampleDrefImplicitLod; + case IR::Opcode::BoundImageSampleDrefExplicitLod: + case IR::Opcode::BindlessImageSampleDrefExplicitLod: + return IR::Opcode::ImageSampleDrefExplicitLod; + case IR::Opcode::BindlessImageGather: + case IR::Opcode::BoundImageGather: + return IR::Opcode::ImageGather; + case IR::Opcode::BindlessImageGatherDref: + case IR::Opcode::BoundImageGatherDref: + return IR::Opcode::ImageGatherDref; + case IR::Opcode::BindlessImageFetch: + case IR::Opcode::BoundImageFetch: + return IR::Opcode::ImageFetch; + case IR::Opcode::BoundImageQueryDimensions: + case IR::Opcode::BindlessImageQueryDimensions: + return IR::Opcode::ImageQueryDimensions; + case IR::Opcode::BoundImageQueryLod: + case IR::Opcode::BindlessImageQueryLod: + return IR::Opcode::ImageQueryLod; + case IR::Opcode::BoundImageGradient: + case IR::Opcode::BindlessImageGradient: + return IR::Opcode::ImageGradient; + case IR::Opcode::BoundImageRead: + case IR::Opcode::BindlessImageRead: + return IR::Opcode::ImageRead; + case IR::Opcode::BoundImageWrite: + case IR::Opcode::BindlessImageWrite: + return IR::Opcode::ImageWrite; + case IR::Opcode::BoundImageAtomicIAdd32: + case IR::Opcode::BindlessImageAtomicIAdd32: + return IR::Opcode::ImageAtomicIAdd32; + case IR::Opcode::BoundImageAtomicSMin32: + case IR::Opcode::BindlessImageAtomicSMin32: + return IR::Opcode::ImageAtomicSMin32; + case IR::Opcode::BoundImageAtomicUMin32: + case IR::Opcode::BindlessImageAtomicUMin32: + return IR::Opcode::ImageAtomicUMin32; + case IR::Opcode::BoundImageAtomicSMax32: + case IR::Opcode::BindlessImageAtomicSMax32: + return IR::Opcode::ImageAtomicSMax32; + case IR::Opcode::BoundImageAtomicUMax32: + case IR::Opcode::BindlessImageAtomicUMax32: + return IR::Opcode::ImageAtomicUMax32; + case IR::Opcode::BoundImageAtomicInc32: + case IR::Opcode::BindlessImageAtomicInc32: + return IR::Opcode::ImageAtomicInc32; + case IR::Opcode::BoundImageAtomicDec32: + case IR::Opcode::BindlessImageAtomicDec32: + return IR::Opcode::ImageAtomicDec32; + case IR::Opcode::BoundImageAtomicAnd32: + case IR::Opcode::BindlessImageAtomicAnd32: + return IR::Opcode::ImageAtomicAnd32; + case IR::Opcode::BoundImageAtomicOr32: + case IR::Opcode::BindlessImageAtomicOr32: + return IR::Opcode::ImageAtomicOr32; + case IR::Opcode::BoundImageAtomicXor32: + case IR::Opcode::BindlessImageAtomicXor32: + return IR::Opcode::ImageAtomicXor32; + case IR::Opcode::BoundImageAtomicExchange32: + case IR::Opcode::BindlessImageAtomicExchange32: + return IR::Opcode::ImageAtomicExchange32; + default: + return IR::Opcode::Void; + } +} + +bool IsBindless(const IR::Inst& inst) { + switch (inst.GetOpcode()) { + case IR::Opcode::BindlessImageSampleImplicitLod: + case IR::Opcode::BindlessImageSampleExplicitLod: + case IR::Opcode::BindlessImageSampleDrefImplicitLod: + case IR::Opcode::BindlessImageSampleDrefExplicitLod: + case IR::Opcode::BindlessImageGather: + case IR::Opcode::BindlessImageGatherDref: + case IR::Opcode::BindlessImageFetch: + case IR::Opcode::BindlessImageQueryDimensions: + case IR::Opcode::BindlessImageQueryLod: + case IR::Opcode::BindlessImageGradient: + case IR::Opcode::BindlessImageRead: + case IR::Opcode::BindlessImageWrite: + case IR::Opcode::BindlessImageAtomicIAdd32: + case IR::Opcode::BindlessImageAtomicSMin32: + case IR::Opcode::BindlessImageAtomicUMin32: + case IR::Opcode::BindlessImageAtomicSMax32: + case IR::Opcode::BindlessImageAtomicUMax32: + case IR::Opcode::BindlessImageAtomicInc32: + case IR::Opcode::BindlessImageAtomicDec32: + case IR::Opcode::BindlessImageAtomicAnd32: + case IR::Opcode::BindlessImageAtomicOr32: + case IR::Opcode::BindlessImageAtomicXor32: + case IR::Opcode::BindlessImageAtomicExchange32: + return true; + case IR::Opcode::BoundImageSampleImplicitLod: + case IR::Opcode::BoundImageSampleExplicitLod: + case IR::Opcode::BoundImageSampleDrefImplicitLod: + case IR::Opcode::BoundImageSampleDrefExplicitLod: + case IR::Opcode::BoundImageGather: + case IR::Opcode::BoundImageGatherDref: + case IR::Opcode::BoundImageFetch: + case IR::Opcode::BoundImageQueryDimensions: + case IR::Opcode::BoundImageQueryLod: + case IR::Opcode::BoundImageGradient: + case IR::Opcode::BoundImageRead: + case IR::Opcode::BoundImageWrite: + case IR::Opcode::BoundImageAtomicIAdd32: + case IR::Opcode::BoundImageAtomicSMin32: + case IR::Opcode::BoundImageAtomicUMin32: + case IR::Opcode::BoundImageAtomicSMax32: + case IR::Opcode::BoundImageAtomicUMax32: + case IR::Opcode::BoundImageAtomicInc32: + case IR::Opcode::BoundImageAtomicDec32: + case IR::Opcode::BoundImageAtomicAnd32: + case IR::Opcode::BoundImageAtomicOr32: + case IR::Opcode::BoundImageAtomicXor32: + case IR::Opcode::BoundImageAtomicExchange32: + return false; + default: + throw InvalidArgument("Invalid opcode {}", inst.GetOpcode()); + } +} + +bool IsTextureInstruction(const IR::Inst& inst) { + return IndexedInstruction(inst) != IR::Opcode::Void; +} + +std::optional<ConstBufferAddr> TryGetConstBuffer(const IR::Inst* inst); + +std::optional<ConstBufferAddr> Track(const IR::Value& value) { + return IR::BreadthFirstSearch(value, TryGetConstBuffer); +} + +std::optional<ConstBufferAddr> TryGetConstBuffer(const IR::Inst* inst) { + switch (inst->GetOpcode()) { + default: + return std::nullopt; + case IR::Opcode::BitwiseOr32: { + std::optional lhs{Track(inst->Arg(0))}; + std::optional rhs{Track(inst->Arg(1))}; + if (!lhs || !rhs) { + return std::nullopt; + } + if (lhs->has_secondary || rhs->has_secondary) { + return std::nullopt; + } + if (lhs->count > 1 || rhs->count > 1) { + return std::nullopt; + } + if (lhs->index > rhs->index || lhs->offset > rhs->offset) { + std::swap(lhs, rhs); + } + return ConstBufferAddr{ + .index = lhs->index, + .offset = lhs->offset, + .secondary_index = rhs->index, + .secondary_offset = rhs->offset, + .dynamic_offset = {}, + .count = 1, + .has_secondary = true, + }; + } + case IR::Opcode::GetCbufU32x2: + case IR::Opcode::GetCbufU32: + break; + } + const IR::Value index{inst->Arg(0)}; + const IR::Value offset{inst->Arg(1)}; + if (!index.IsImmediate()) { + // Reading a bindless texture from variable indices is valid + // but not supported here at the moment + return std::nullopt; + } + if (offset.IsImmediate()) { + return ConstBufferAddr{ + .index = index.U32(), + .offset = offset.U32(), + .secondary_index = 0, + .secondary_offset = 0, + .dynamic_offset = {}, + .count = 1, + .has_secondary = false, + }; + } + IR::Inst* const offset_inst{offset.InstRecursive()}; + if (offset_inst->GetOpcode() != IR::Opcode::IAdd32) { + return std::nullopt; + } + u32 base_offset{}; + IR::U32 dynamic_offset; + if (offset_inst->Arg(0).IsImmediate()) { + base_offset = offset_inst->Arg(0).U32(); + dynamic_offset = IR::U32{offset_inst->Arg(1)}; + } else if (offset_inst->Arg(1).IsImmediate()) { + base_offset = offset_inst->Arg(1).U32(); + dynamic_offset = IR::U32{offset_inst->Arg(0)}; + } else { + return std::nullopt; + } + return ConstBufferAddr{ + .index = index.U32(), + .offset = base_offset, + .secondary_index = 0, + .secondary_offset = 0, + .dynamic_offset = dynamic_offset, + .count = 8, + .has_secondary = false, + }; +} + +TextureInst MakeInst(Environment& env, IR::Block* block, IR::Inst& inst) { + ConstBufferAddr addr; + if (IsBindless(inst)) { + const std::optional<ConstBufferAddr> track_addr{Track(inst.Arg(0))}; + if (!track_addr) { + throw NotImplementedException("Failed to track bindless texture constant buffer"); + } + addr = *track_addr; + } else { + addr = ConstBufferAddr{ + .index = env.TextureBoundBuffer(), + .offset = inst.Arg(0).U32(), + .secondary_index = 0, + .secondary_offset = 0, + .dynamic_offset = {}, + .count = 1, + .has_secondary = false, + }; + } + return TextureInst{ + .cbuf = addr, + .inst = &inst, + .block = block, + }; +} + +TextureType ReadTextureType(Environment& env, const ConstBufferAddr& cbuf) { + const u32 secondary_index{cbuf.has_secondary ? cbuf.secondary_index : cbuf.index}; + const u32 secondary_offset{cbuf.has_secondary ? cbuf.secondary_offset : cbuf.offset}; + const u32 lhs_raw{env.ReadCbufValue(cbuf.index, cbuf.offset)}; + const u32 rhs_raw{env.ReadCbufValue(secondary_index, secondary_offset)}; + return env.ReadTextureType(lhs_raw | rhs_raw); +} + +class Descriptors { +public: + explicit Descriptors(TextureBufferDescriptors& texture_buffer_descriptors_, + ImageBufferDescriptors& image_buffer_descriptors_, + TextureDescriptors& texture_descriptors_, + ImageDescriptors& image_descriptors_) + : texture_buffer_descriptors{texture_buffer_descriptors_}, + image_buffer_descriptors{image_buffer_descriptors_}, + texture_descriptors{texture_descriptors_}, image_descriptors{image_descriptors_} {} + + u32 Add(const TextureBufferDescriptor& desc) { + return Add(texture_buffer_descriptors, desc, [&desc](const auto& existing) { + return desc.cbuf_index == existing.cbuf_index && + desc.cbuf_offset == existing.cbuf_offset && + desc.secondary_cbuf_index == existing.secondary_cbuf_index && + desc.secondary_cbuf_offset == existing.secondary_cbuf_offset && + desc.count == existing.count && desc.size_shift == existing.size_shift && + desc.has_secondary == existing.has_secondary; + }); + } + + u32 Add(const ImageBufferDescriptor& desc) { + const u32 index{Add(image_buffer_descriptors, desc, [&desc](const auto& existing) { + return desc.format == existing.format && desc.cbuf_index == existing.cbuf_index && + desc.cbuf_offset == existing.cbuf_offset && desc.count == existing.count && + desc.size_shift == existing.size_shift; + })}; + image_buffer_descriptors[index].is_written |= desc.is_written; + image_buffer_descriptors[index].is_read |= desc.is_read; + return index; + } + + u32 Add(const TextureDescriptor& desc) { + return Add(texture_descriptors, desc, [&desc](const auto& existing) { + return desc.type == existing.type && desc.is_depth == existing.is_depth && + desc.has_secondary == existing.has_secondary && + desc.cbuf_index == existing.cbuf_index && + desc.cbuf_offset == existing.cbuf_offset && + desc.secondary_cbuf_index == existing.secondary_cbuf_index && + desc.secondary_cbuf_offset == existing.secondary_cbuf_offset && + desc.count == existing.count && desc.size_shift == existing.size_shift; + }); + } + + u32 Add(const ImageDescriptor& desc) { + const u32 index{Add(image_descriptors, desc, [&desc](const auto& existing) { + return desc.type == existing.type && desc.format == existing.format && + desc.cbuf_index == existing.cbuf_index && + desc.cbuf_offset == existing.cbuf_offset && desc.count == existing.count && + desc.size_shift == existing.size_shift; + })}; + image_descriptors[index].is_written |= desc.is_written; + image_descriptors[index].is_read |= desc.is_read; + return index; + } + +private: + template <typename Descriptors, typename Descriptor, typename Func> + static u32 Add(Descriptors& descriptors, const Descriptor& desc, Func&& pred) { + // TODO: Handle arrays + const auto it{std::ranges::find_if(descriptors, pred)}; + if (it != descriptors.end()) { + return static_cast<u32>(std::distance(descriptors.begin(), it)); + } + descriptors.push_back(desc); + return static_cast<u32>(descriptors.size()) - 1; + } + + TextureBufferDescriptors& texture_buffer_descriptors; + ImageBufferDescriptors& image_buffer_descriptors; + TextureDescriptors& texture_descriptors; + ImageDescriptors& image_descriptors; +}; +} // Anonymous namespace + +void TexturePass(Environment& env, IR::Program& program) { + TextureInstVector to_replace; + for (IR::Block* const block : program.post_order_blocks) { + for (IR::Inst& inst : block->Instructions()) { + if (!IsTextureInstruction(inst)) { + continue; + } + to_replace.push_back(MakeInst(env, block, inst)); + } + } + // Sort instructions to visit textures by constant buffer index, then by offset + std::ranges::sort(to_replace, [](const auto& lhs, const auto& rhs) { + return lhs.cbuf.offset < rhs.cbuf.offset; + }); + std::stable_sort(to_replace.begin(), to_replace.end(), [](const auto& lhs, const auto& rhs) { + return lhs.cbuf.index < rhs.cbuf.index; + }); + Descriptors descriptors{ + program.info.texture_buffer_descriptors, + program.info.image_buffer_descriptors, + program.info.texture_descriptors, + program.info.image_descriptors, + }; + for (TextureInst& texture_inst : to_replace) { + // TODO: Handle arrays + IR::Inst* const inst{texture_inst.inst}; + inst->ReplaceOpcode(IndexedInstruction(*inst)); + + const auto& cbuf{texture_inst.cbuf}; + auto flags{inst->Flags<IR::TextureInstInfo>()}; + switch (inst->GetOpcode()) { + case IR::Opcode::ImageQueryDimensions: + flags.type.Assign(ReadTextureType(env, cbuf)); + inst->SetFlags(flags); + break; + case IR::Opcode::ImageFetch: + if (flags.type != TextureType::Color1D) { + break; + } + if (ReadTextureType(env, cbuf) == TextureType::Buffer) { + // Replace with the bound texture type only when it's a texture buffer + // If the instruction is 1D and the bound type is 2D, don't change the code and let + // the rasterizer robustness handle it + // This happens on Fire Emblem: Three Houses + flags.type.Assign(TextureType::Buffer); + } + break; + default: + break; + } + u32 index; + switch (inst->GetOpcode()) { + case IR::Opcode::ImageRead: + case IR::Opcode::ImageAtomicIAdd32: + case IR::Opcode::ImageAtomicSMin32: + case IR::Opcode::ImageAtomicUMin32: + case IR::Opcode::ImageAtomicSMax32: + case IR::Opcode::ImageAtomicUMax32: + case IR::Opcode::ImageAtomicInc32: + case IR::Opcode::ImageAtomicDec32: + case IR::Opcode::ImageAtomicAnd32: + case IR::Opcode::ImageAtomicOr32: + case IR::Opcode::ImageAtomicXor32: + case IR::Opcode::ImageAtomicExchange32: + case IR::Opcode::ImageWrite: { + if (cbuf.has_secondary) { + throw NotImplementedException("Unexpected separate sampler"); + } + const bool is_written{inst->GetOpcode() != IR::Opcode::ImageRead}; + const bool is_read{inst->GetOpcode() != IR::Opcode::ImageWrite}; + if (flags.type == TextureType::Buffer) { + index = descriptors.Add(ImageBufferDescriptor{ + .format = flags.image_format, + .is_written = is_written, + .is_read = is_read, + .cbuf_index = cbuf.index, + .cbuf_offset = cbuf.offset, + .count = cbuf.count, + .size_shift = DESCRIPTOR_SIZE_SHIFT, + }); + } else { + index = descriptors.Add(ImageDescriptor{ + .type = flags.type, + .format = flags.image_format, + .is_written = is_written, + .is_read = is_read, + .cbuf_index = cbuf.index, + .cbuf_offset = cbuf.offset, + .count = cbuf.count, + .size_shift = DESCRIPTOR_SIZE_SHIFT, + }); + } + break; + } + default: + if (flags.type == TextureType::Buffer) { + index = descriptors.Add(TextureBufferDescriptor{ + .has_secondary = cbuf.has_secondary, + .cbuf_index = cbuf.index, + .cbuf_offset = cbuf.offset, + .secondary_cbuf_index = cbuf.secondary_index, + .secondary_cbuf_offset = cbuf.secondary_offset, + .count = cbuf.count, + .size_shift = DESCRIPTOR_SIZE_SHIFT, + }); + } else { + index = descriptors.Add(TextureDescriptor{ + .type = flags.type, + .is_depth = flags.is_depth != 0, + .has_secondary = cbuf.has_secondary, + .cbuf_index = cbuf.index, + .cbuf_offset = cbuf.offset, + .secondary_cbuf_index = cbuf.secondary_index, + .secondary_cbuf_offset = cbuf.secondary_offset, + .count = cbuf.count, + .size_shift = DESCRIPTOR_SIZE_SHIFT, + }); + } + break; + } + flags.descriptor_index.Assign(index); + inst->SetFlags(flags); + + if (cbuf.count > 1) { + const auto insert_point{IR::Block::InstructionList::s_iterator_to(*inst)}; + IR::IREmitter ir{*texture_inst.block, insert_point}; + const IR::U32 shift{ir.Imm32(std::countr_zero(DESCRIPTOR_SIZE))}; + inst->SetArg(0, ir.ShiftRightArithmetic(cbuf.dynamic_offset, shift)); + } else { + inst->SetArg(0, IR::Value{}); + } + } +} + +void JoinTextureInfo(Info& base, Info& source) { + Descriptors descriptors{ + base.texture_buffer_descriptors, + base.image_buffer_descriptors, + base.texture_descriptors, + base.image_descriptors, + }; + for (auto& desc : source.texture_buffer_descriptors) { + descriptors.Add(desc); + } + for (auto& desc : source.image_buffer_descriptors) { + descriptors.Add(desc); + } + for (auto& desc : source.texture_descriptors) { + descriptors.Add(desc); + } + for (auto& desc : source.image_descriptors) { + descriptors.Add(desc); + } +} + +} // namespace Shader::Optimization |