yuzu/src/video_core/shader_environment.cpp

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// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <algorithm>
#include <filesystem>
#include <fstream>
#include <memory>
#include <optional>
#include <utility>
#include "common/assert.h"
#include "common/cityhash.h"
#include "common/common_types.h"
#include "common/div_ceil.h"
#include "common/fs/fs.h"
#include "common/fs/path_util.h"
#include "common/logging/log.h"
#include "shader_recompiler/environment.h"
#include "video_core/engines/kepler_compute.h"
#include "video_core/memory_manager.h"
#include "video_core/shader_environment.h"
#include "video_core/textures/texture.h"
namespace VideoCommon {
constexpr std::array<char, 8> MAGIC_NUMBER{'y', 'u', 'z', 'u', 'c', 'a', 'c', 'h'};
constexpr size_t INST_SIZE = sizeof(u64);
using Maxwell = Tegra::Engines::Maxwell3D::Regs;
static u64 MakeCbufKey(u32 index, u32 offset) {
return (static_cast<u64>(index) << 32) | offset;
}
static Shader::TextureType ConvertType(const Tegra::Texture::TICEntry& entry) {
switch (entry.texture_type) {
case Tegra::Texture::TextureType::Texture1D:
return Shader::TextureType::Color1D;
case Tegra::Texture::TextureType::Texture2D:
case Tegra::Texture::TextureType::Texture2DNoMipmap:
return Shader::TextureType::Color2D;
case Tegra::Texture::TextureType::Texture3D:
return Shader::TextureType::Color3D;
case Tegra::Texture::TextureType::TextureCubemap:
return Shader::TextureType::ColorCube;
case Tegra::Texture::TextureType::Texture1DArray:
return Shader::TextureType::ColorArray1D;
case Tegra::Texture::TextureType::Texture2DArray:
return Shader::TextureType::ColorArray2D;
case Tegra::Texture::TextureType::Texture1DBuffer:
return Shader::TextureType::Buffer;
case Tegra::Texture::TextureType::TextureCubeArray:
return Shader::TextureType::ColorArrayCube;
default:
throw Shader::NotImplementedException("Unknown texture type");
}
}
static std::string_view StageToPrefix(Shader::Stage stage) {
switch (stage) {
case Shader::Stage::VertexB:
return "VB";
case Shader::Stage::TessellationControl:
return "TC";
case Shader::Stage::TessellationEval:
return "TE";
case Shader::Stage::Geometry:
return "GS";
case Shader::Stage::Fragment:
return "FS";
case Shader::Stage::Compute:
return "CS";
case Shader::Stage::VertexA:
return "VA";
default:
return "UK";
}
}
static void DumpImpl(u64 hash, const u64* code, u32 read_highest, u32 read_lowest,
u32 initial_offset, Shader::Stage stage) {
const auto shader_dir{Common::FS::GetYuzuPath(Common::FS::YuzuPath::DumpDir)};
const auto base_dir{shader_dir / "shaders"};
if (!Common::FS::CreateDir(shader_dir) || !Common::FS::CreateDir(base_dir)) {
LOG_ERROR(Common_Filesystem, "Failed to create shader dump directories");
return;
}
const auto prefix = StageToPrefix(stage);
const auto name{base_dir / fmt::format("{}{:016x}.ash", prefix, hash)};
const size_t real_size = read_highest - read_lowest + initial_offset;
const size_t padding_needed = ((32 - (real_size % 32)) % 32);
std::fstream shader_file(name, std::ios::out | std::ios::binary);
const size_t jump_index = initial_offset / sizeof(u64);
shader_file.write(reinterpret_cast<const char*>(code + jump_index), real_size);
for (size_t i = 0; i < padding_needed; i++) {
shader_file.put(0);
}
}
GenericEnvironment::GenericEnvironment(Tegra::MemoryManager& gpu_memory_, GPUVAddr program_base_,
u32 start_address_)
: gpu_memory{&gpu_memory_}, program_base{program_base_} {
start_address = start_address_;
}
GenericEnvironment::~GenericEnvironment() = default;
u32 GenericEnvironment::TextureBoundBuffer() const {
return texture_bound;
}
u32 GenericEnvironment::LocalMemorySize() const {
return local_memory_size;
}
u32 GenericEnvironment::SharedMemorySize() const {
return shared_memory_size;
}
std::array<u32, 3> GenericEnvironment::WorkgroupSize() const {
return workgroup_size;
}
u64 GenericEnvironment::ReadInstruction(u32 address) {
read_lowest = std::min(read_lowest, address);
read_highest = std::max(read_highest, address);
if (address >= cached_lowest && address < cached_highest) {
return code[(address - cached_lowest) / INST_SIZE];
}
has_unbound_instructions = true;
return gpu_memory->Read<u64>(program_base + address);
}
std::optional<u64> GenericEnvironment::Analyze() {
const std::optional<u64> size{TryFindSize()};
if (!size) {
return std::nullopt;
}
cached_lowest = start_address;
cached_highest = start_address + static_cast<u32>(*size);
return Common::CityHash64(reinterpret_cast<const char*>(code.data()), *size);
}
void GenericEnvironment::SetCachedSize(size_t size_bytes) {
cached_lowest = start_address;
cached_highest = start_address + static_cast<u32>(size_bytes);
code.resize(CachedSize());
gpu_memory->ReadBlock(program_base + cached_lowest, code.data(), code.size() * sizeof(u64));
}
size_t GenericEnvironment::CachedSize() const noexcept {
return cached_highest - cached_lowest + INST_SIZE;
}
size_t GenericEnvironment::ReadSize() const noexcept {
return read_highest - read_lowest + INST_SIZE;
}
bool GenericEnvironment::CanBeSerialized() const noexcept {
return !has_unbound_instructions;
}
u64 GenericEnvironment::CalculateHash() const {
const size_t size{ReadSize()};
const auto data{std::make_unique<char[]>(size)};
gpu_memory->ReadBlock(program_base + read_lowest, data.get(), size);
return Common::CityHash64(data.get(), size);
}
void GenericEnvironment::Dump(u64 hash) {
DumpImpl(hash, code.data(), read_highest, read_lowest, initial_offset, stage);
}
void GenericEnvironment::Serialize(std::ofstream& file) const {
const u64 code_size{static_cast<u64>(CachedSize())};
const u64 num_texture_types{static_cast<u64>(texture_types.size())};
const u64 num_cbuf_values{static_cast<u64>(cbuf_values.size())};
file.write(reinterpret_cast<const char*>(&code_size), sizeof(code_size))
.write(reinterpret_cast<const char*>(&num_texture_types), sizeof(num_texture_types))
.write(reinterpret_cast<const char*>(&num_cbuf_values), sizeof(num_cbuf_values))
.write(reinterpret_cast<const char*>(&local_memory_size), sizeof(local_memory_size))
.write(reinterpret_cast<const char*>(&texture_bound), sizeof(texture_bound))
.write(reinterpret_cast<const char*>(&start_address), sizeof(start_address))
.write(reinterpret_cast<const char*>(&cached_lowest), sizeof(cached_lowest))
.write(reinterpret_cast<const char*>(&cached_highest), sizeof(cached_highest))
.write(reinterpret_cast<const char*>(&stage), sizeof(stage))
.write(reinterpret_cast<const char*>(code.data()), code_size);
for (const auto [key, type] : texture_types) {
file.write(reinterpret_cast<const char*>(&key), sizeof(key))
.write(reinterpret_cast<const char*>(&type), sizeof(type));
}
for (const auto [key, type] : cbuf_values) {
file.write(reinterpret_cast<const char*>(&key), sizeof(key))
.write(reinterpret_cast<const char*>(&type), sizeof(type));
}
if (stage == Shader::Stage::Compute) {
file.write(reinterpret_cast<const char*>(&workgroup_size), sizeof(workgroup_size))
.write(reinterpret_cast<const char*>(&shared_memory_size), sizeof(shared_memory_size));
} else {
file.write(reinterpret_cast<const char*>(&sph), sizeof(sph));
if (stage == Shader::Stage::Geometry) {
file.write(reinterpret_cast<const char*>(&gp_passthrough_mask),
sizeof(gp_passthrough_mask));
}
}
}
std::optional<u64> GenericEnvironment::TryFindSize() {
static constexpr size_t BLOCK_SIZE = 0x1000;
static constexpr size_t MAXIMUM_SIZE = 0x100000;
static constexpr u64 SELF_BRANCH_A = 0xE2400FFFFF87000FULL;
static constexpr u64 SELF_BRANCH_B = 0xE2400FFFFF07000FULL;
GPUVAddr guest_addr{program_base + start_address};
size_t offset{0};
size_t size{BLOCK_SIZE};
while (size <= MAXIMUM_SIZE) {
code.resize(size / INST_SIZE);
u64* const data = code.data() + offset / INST_SIZE;
gpu_memory->ReadBlock(guest_addr, data, BLOCK_SIZE);
for (size_t index = 0; index < BLOCK_SIZE; index += INST_SIZE) {
const u64 inst = data[index / INST_SIZE];
if (inst == SELF_BRANCH_A || inst == SELF_BRANCH_B) {
return offset + index;
}
}
guest_addr += BLOCK_SIZE;
size += BLOCK_SIZE;
offset += BLOCK_SIZE;
}
return std::nullopt;
}
Shader::TextureType GenericEnvironment::ReadTextureTypeImpl(GPUVAddr tic_addr, u32 tic_limit,
bool via_header_index, u32 raw) {
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const auto handle{Tegra::Texture::TexturePair(raw, via_header_index)};
const GPUVAddr descriptor_addr{tic_addr + handle.first * sizeof(Tegra::Texture::TICEntry)};
Tegra::Texture::TICEntry entry;
gpu_memory->ReadBlock(descriptor_addr, &entry, sizeof(entry));
const Shader::TextureType result{ConvertType(entry)};
texture_types.emplace(raw, result);
return result;
}
GraphicsEnvironment::GraphicsEnvironment(Tegra::Engines::Maxwell3D& maxwell3d_,
Tegra::MemoryManager& gpu_memory_,
Maxwell::ShaderProgram program, GPUVAddr program_base_,
u32 start_address_)
: GenericEnvironment{gpu_memory_, program_base_, start_address_}, maxwell3d{&maxwell3d_} {
gpu_memory->ReadBlock(program_base + start_address, &sph, sizeof(sph));
initial_offset = sizeof(sph);
gp_passthrough_mask = maxwell3d->regs.gp_passthrough_mask;
switch (program) {
case Maxwell::ShaderProgram::VertexA:
stage = Shader::Stage::VertexA;
stage_index = 0;
break;
case Maxwell::ShaderProgram::VertexB:
stage = Shader::Stage::VertexB;
stage_index = 0;
break;
case Maxwell::ShaderProgram::TesselationControl:
stage = Shader::Stage::TessellationControl;
stage_index = 1;
break;
case Maxwell::ShaderProgram::TesselationEval:
stage = Shader::Stage::TessellationEval;
stage_index = 2;
break;
case Maxwell::ShaderProgram::Geometry:
stage = Shader::Stage::Geometry;
stage_index = 3;
break;
case Maxwell::ShaderProgram::Fragment:
stage = Shader::Stage::Fragment;
stage_index = 4;
break;
default:
UNREACHABLE_MSG("Invalid program={}", program);
break;
}
const u64 local_size{sph.LocalMemorySize()};
ASSERT(local_size <= std::numeric_limits<u32>::max());
local_memory_size = static_cast<u32>(local_size) + sph.common3.shader_local_memory_crs_size;
texture_bound = maxwell3d->regs.tex_cb_index;
}
u32 GraphicsEnvironment::ReadCbufValue(u32 cbuf_index, u32 cbuf_offset) {
const auto& cbuf{maxwell3d->state.shader_stages[stage_index].const_buffers[cbuf_index]};
ASSERT(cbuf.enabled);
u32 value{};
if (cbuf_offset < cbuf.size) {
value = gpu_memory->Read<u32>(cbuf.address + cbuf_offset);
}
cbuf_values.emplace(MakeCbufKey(cbuf_index, cbuf_offset), value);
return value;
}
Shader::TextureType GraphicsEnvironment::ReadTextureType(u32 handle) {
const auto& regs{maxwell3d->regs};
const bool via_header_index{regs.sampler_index == Maxwell::SamplerIndex::ViaHeaderIndex};
return ReadTextureTypeImpl(regs.tic.Address(), regs.tic.limit, via_header_index, handle);
}
ComputeEnvironment::ComputeEnvironment(Tegra::Engines::KeplerCompute& kepler_compute_,
Tegra::MemoryManager& gpu_memory_, GPUVAddr program_base_,
u32 start_address_)
: GenericEnvironment{gpu_memory_, program_base_, start_address_}, kepler_compute{
&kepler_compute_} {
const auto& qmd{kepler_compute->launch_description};
stage = Shader::Stage::Compute;
local_memory_size = qmd.local_pos_alloc + qmd.local_crs_alloc;
texture_bound = kepler_compute->regs.tex_cb_index;
shared_memory_size = qmd.shared_alloc;
workgroup_size = {qmd.block_dim_x, qmd.block_dim_y, qmd.block_dim_z};
}
u32 ComputeEnvironment::ReadCbufValue(u32 cbuf_index, u32 cbuf_offset) {
const auto& qmd{kepler_compute->launch_description};
ASSERT(((qmd.const_buffer_enable_mask.Value() >> cbuf_index) & 1) != 0);
const auto& cbuf{qmd.const_buffer_config[cbuf_index]};
u32 value{};
if (cbuf_offset < cbuf.size) {
value = gpu_memory->Read<u32>(cbuf.Address() + cbuf_offset);
}
cbuf_values.emplace(MakeCbufKey(cbuf_index, cbuf_offset), value);
return value;
}
Shader::TextureType ComputeEnvironment::ReadTextureType(u32 handle) {
const auto& regs{kepler_compute->regs};
const auto& qmd{kepler_compute->launch_description};
return ReadTextureTypeImpl(regs.tic.Address(), regs.tic.limit, qmd.linked_tsc != 0, handle);
}
void FileEnvironment::Deserialize(std::ifstream& file) {
u64 code_size{};
u64 num_texture_types{};
u64 num_cbuf_values{};
file.read(reinterpret_cast<char*>(&code_size), sizeof(code_size))
.read(reinterpret_cast<char*>(&num_texture_types), sizeof(num_texture_types))
.read(reinterpret_cast<char*>(&num_cbuf_values), sizeof(num_cbuf_values))
.read(reinterpret_cast<char*>(&local_memory_size), sizeof(local_memory_size))
.read(reinterpret_cast<char*>(&texture_bound), sizeof(texture_bound))
.read(reinterpret_cast<char*>(&start_address), sizeof(start_address))
.read(reinterpret_cast<char*>(&read_lowest), sizeof(read_lowest))
.read(reinterpret_cast<char*>(&read_highest), sizeof(read_highest))
.read(reinterpret_cast<char*>(&stage), sizeof(stage));
code = std::make_unique<u64[]>(Common::DivCeil(code_size, sizeof(u64)));
file.read(reinterpret_cast<char*>(code.get()), code_size);
for (size_t i = 0; i < num_texture_types; ++i) {
u32 key;
Shader::TextureType type;
file.read(reinterpret_cast<char*>(&key), sizeof(key))
.read(reinterpret_cast<char*>(&type), sizeof(type));
texture_types.emplace(key, type);
}
for (size_t i = 0; i < num_cbuf_values; ++i) {
u64 key;
u32 value;
file.read(reinterpret_cast<char*>(&key), sizeof(key))
.read(reinterpret_cast<char*>(&value), sizeof(value));
cbuf_values.emplace(key, value);
}
if (stage == Shader::Stage::Compute) {
file.read(reinterpret_cast<char*>(&workgroup_size), sizeof(workgroup_size))
.read(reinterpret_cast<char*>(&shared_memory_size), sizeof(shared_memory_size));
initial_offset = 0;
} else {
file.read(reinterpret_cast<char*>(&sph), sizeof(sph));
initial_offset = sizeof(sph);
if (stage == Shader::Stage::Geometry) {
file.read(reinterpret_cast<char*>(&gp_passthrough_mask), sizeof(gp_passthrough_mask));
}
}
}
void FileEnvironment::Dump(u64 hash) {
DumpImpl(hash, code.get(), read_highest, read_lowest, initial_offset, stage);
}
u64 FileEnvironment::ReadInstruction(u32 address) {
if (address < read_lowest || address > read_highest) {
throw Shader::LogicError("Out of bounds address {}", address);
}
return code[(address - read_lowest) / sizeof(u64)];
}
u32 FileEnvironment::ReadCbufValue(u32 cbuf_index, u32 cbuf_offset) {
const auto it{cbuf_values.find(MakeCbufKey(cbuf_index, cbuf_offset))};
if (it == cbuf_values.end()) {
throw Shader::LogicError("Uncached read texture type");
}
return it->second;
}
Shader::TextureType FileEnvironment::ReadTextureType(u32 handle) {
const auto it{texture_types.find(handle)};
if (it == texture_types.end()) {
throw Shader::LogicError("Uncached read texture type");
}
return it->second;
}
u32 FileEnvironment::LocalMemorySize() const {
return local_memory_size;
}
u32 FileEnvironment::SharedMemorySize() const {
return shared_memory_size;
}
u32 FileEnvironment::TextureBoundBuffer() const {
return texture_bound;
}
std::array<u32, 3> FileEnvironment::WorkgroupSize() const {
return workgroup_size;
}
void SerializePipeline(std::span<const char> key, std::span<const GenericEnvironment* const> envs,
const std::filesystem::path& filename, u32 cache_version) try {
std::ofstream file(filename, std::ios::binary | std::ios::ate | std::ios::app);
file.exceptions(std::ifstream::failbit);
if (!file.is_open()) {
LOG_ERROR(Common_Filesystem, "Failed to open pipeline cache file {}",
Common::FS::PathToUTF8String(filename));
return;
}
if (file.tellp() == 0) {
// Write header
file.write(MAGIC_NUMBER.data(), MAGIC_NUMBER.size())
.write(reinterpret_cast<const char*>(&cache_version), sizeof(cache_version));
}
if (!std::ranges::all_of(envs, &GenericEnvironment::CanBeSerialized)) {
return;
}
const u32 num_envs{static_cast<u32>(envs.size())};
file.write(reinterpret_cast<const char*>(&num_envs), sizeof(num_envs));
for (const GenericEnvironment* const env : envs) {
env->Serialize(file);
}
file.write(key.data(), key.size_bytes());
} catch (const std::ios_base::failure& e) {
LOG_ERROR(Common_Filesystem, "{}", e.what());
if (!Common::FS::RemoveFile(filename)) {
LOG_ERROR(Common_Filesystem, "Failed to delete pipeline cache file {}",
Common::FS::PathToUTF8String(filename));
}
}
void LoadPipelines(
std::stop_token stop_loading, const std::filesystem::path& filename, u32 expected_cache_version,
Common::UniqueFunction<void, std::ifstream&, FileEnvironment> load_compute,
Common::UniqueFunction<void, std::ifstream&, std::vector<FileEnvironment>> load_graphics) try {
std::ifstream file(filename, std::ios::binary | std::ios::ate);
if (!file.is_open()) {
return;
}
file.exceptions(std::ifstream::failbit);
const auto end{file.tellg()};
file.seekg(0, std::ios::beg);
std::array<char, 8> magic_number;
u32 cache_version;
file.read(magic_number.data(), magic_number.size())
.read(reinterpret_cast<char*>(&cache_version), sizeof(cache_version));
if (magic_number != MAGIC_NUMBER || cache_version != expected_cache_version) {
file.close();
if (Common::FS::RemoveFile(filename)) {
if (magic_number != MAGIC_NUMBER) {
LOG_ERROR(Common_Filesystem, "Invalid pipeline cache file");
}
if (cache_version != expected_cache_version) {
LOG_INFO(Common_Filesystem, "Deleting old pipeline cache");
}
} else {
LOG_ERROR(Common_Filesystem,
"Invalid pipeline cache file and failed to delete it in \"{}\"",
Common::FS::PathToUTF8String(filename));
}
return;
}
while (file.tellg() != end) {
if (stop_loading.stop_requested()) {
return;
}
u32 num_envs{};
file.read(reinterpret_cast<char*>(&num_envs), sizeof(num_envs));
std::vector<FileEnvironment> envs(num_envs);
for (FileEnvironment& env : envs) {
env.Deserialize(file);
}
if (envs.front().ShaderStage() == Shader::Stage::Compute) {
load_compute(file, std::move(envs.front()));
} else {
load_graphics(file, std::move(envs));
}
}
} catch (const std::ios_base::failure& e) {
LOG_ERROR(Common_Filesystem, "{}", e.what());
if (!Common::FS::RemoveFile(filename)) {
LOG_ERROR(Common_Filesystem, "Failed to delete pipeline cache file {}",
Common::FS::PathToUTF8String(filename));
}
}
} // namespace VideoCommon