mirror of
https://github.com/yuzu-mirror/yuzu
synced 2024-12-25 12:43:06 +00:00
254 lines
9 KiB
C++
254 lines
9 KiB
C++
// Copyright 2021 yuzu Emulator Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#include <algorithm>
|
|
#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;
|
|
};
|
|
|
|
struct TextureInst {
|
|
ConstBufferAddr cbuf;
|
|
IR::Inst* inst;
|
|
IR::Block* block;
|
|
};
|
|
|
|
using TextureInstVector = boost::container::small_vector<TextureInst, 24>;
|
|
|
|
IR::Opcode IndexedInstruction(const IR::Inst& inst) {
|
|
switch (inst.Opcode()) {
|
|
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;
|
|
default:
|
|
return IR::Opcode::Void;
|
|
}
|
|
}
|
|
|
|
bool IsBindless(const IR::Inst& inst) {
|
|
switch (inst.Opcode()) {
|
|
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:
|
|
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:
|
|
return false;
|
|
default:
|
|
throw InvalidArgument("Invalid opcode {}", inst.Opcode());
|
|
}
|
|
}
|
|
|
|
bool IsTextureInstruction(const IR::Inst& inst) {
|
|
return IndexedInstruction(inst) != IR::Opcode::Void;
|
|
}
|
|
|
|
std::optional<ConstBufferAddr> TryGetConstBuffer(const IR::Inst* inst) {
|
|
if (inst->Opcode() != IR::Opcode::GetCbufU32) {
|
|
return std::nullopt;
|
|
}
|
|
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()) {
|
|
// TODO: Support arrays of textures
|
|
return std::nullopt;
|
|
}
|
|
return ConstBufferAddr{
|
|
.index{index.U32()},
|
|
.offset{offset.U32()},
|
|
};
|
|
}
|
|
|
|
std::optional<ConstBufferAddr> Track(const IR::Value& value) {
|
|
return IR::BreadthFirstSearch(value, TryGetConstBuffer);
|
|
}
|
|
|
|
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()},
|
|
};
|
|
}
|
|
return TextureInst{
|
|
.cbuf{addr},
|
|
.inst{&inst},
|
|
.block{block},
|
|
};
|
|
}
|
|
|
|
class Descriptors {
|
|
public:
|
|
explicit Descriptors(TextureDescriptors& texture_descriptors_,
|
|
TextureBufferDescriptors& texture_buffer_descriptors_)
|
|
: texture_descriptors{texture_descriptors_}, texture_buffer_descriptors{
|
|
texture_buffer_descriptors_} {}
|
|
|
|
u32 Add(const TextureDescriptor& desc) {
|
|
return Add(texture_descriptors, desc, [&desc](const auto& existing) {
|
|
return desc.cbuf_index == existing.cbuf_index &&
|
|
desc.cbuf_offset == existing.cbuf_offset && desc.type == existing.type;
|
|
});
|
|
}
|
|
|
|
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;
|
|
});
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
TextureDescriptors& texture_descriptors;
|
|
TextureBufferDescriptors& texture_buffer_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_descriptors,
|
|
program.info.texture_buffer_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->Opcode()) {
|
|
case IR::Opcode::ImageQueryDimensions:
|
|
flags.type.Assign(env.ReadTextureType(cbuf.index, cbuf.offset));
|
|
inst->SetFlags(flags);
|
|
break;
|
|
case IR::Opcode::ImageFetch:
|
|
if (flags.type != TextureType::Color1D) {
|
|
break;
|
|
}
|
|
if (env.ReadTextureType(cbuf.index, cbuf.offset) == 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);
|
|
}
|
|
inst->SetFlags(flags);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
u32 index;
|
|
if (flags.type == TextureType::Buffer) {
|
|
index = descriptors.Add(TextureBufferDescriptor{
|
|
.cbuf_index{cbuf.index},
|
|
.cbuf_offset{cbuf.offset},
|
|
.count{1},
|
|
});
|
|
} else {
|
|
index = descriptors.Add(TextureDescriptor{
|
|
.type{flags.type},
|
|
.cbuf_index{cbuf.index},
|
|
.cbuf_offset{cbuf.offset},
|
|
.count{1},
|
|
});
|
|
}
|
|
inst->SetArg(0, IR::Value{index});
|
|
}
|
|
}
|
|
|
|
} // namespace Shader::Optimization
|