yuzu/src/video_core/renderer_opengl/gl_shader_cache.cpp
ReinUsesLisp 4e35177e23 shader_ir: Implement VOTE
Implement VOTE using Nvidia's intrinsics. Documentation about these can
be found here
https://developer.nvidia.com/reading-between-threads-shader-intrinsics

Instead of using portable ARB instructions I opted to use Nvidia
intrinsics because these are the closest we have to how Tegra X1
hardware renders.

To stub VOTE on non-Nvidia drivers (including nouveau) this commit
simulates a GPU with a warp size of one, returning what is meaningful
for the instruction being emulated:

* anyThreadNV(value) -> value
* allThreadsNV(value) -> value
* allThreadsEqualNV(value) -> true

ballotARB, also known as "uint64_t(activeThreadsNV())", emits

VOTE.ANY Rd, PT, PT;

on nouveau's compiler. This doesn't match exactly to Nvidia's code

VOTE.ALL Rd, PT, PT;

Which is emulated with activeThreadsNV() by this commit. In theory this
shouldn't really matter since .ANY, .ALL and .EQ affect the predicates
(set to PT on those cases) and not the registers.
2019-08-21 14:50:38 -03:00

701 lines
27 KiB
C++

// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <mutex>
#include <thread>
#include <boost/functional/hash.hpp>
#include "common/assert.h"
#include "common/hash.h"
#include "common/scope_exit.h"
#include "core/core.h"
#include "core/frontend/emu_window.h"
#include "video_core/engines/maxwell_3d.h"
#include "video_core/memory_manager.h"
#include "video_core/renderer_opengl/gl_rasterizer.h"
#include "video_core/renderer_opengl/gl_shader_cache.h"
#include "video_core/renderer_opengl/gl_shader_decompiler.h"
#include "video_core/renderer_opengl/gl_shader_disk_cache.h"
#include "video_core/renderer_opengl/utils.h"
#include "video_core/shader/shader_ir.h"
namespace OpenGL {
using VideoCommon::Shader::ProgramCode;
// One UBO is always reserved for emulation values on staged shaders
constexpr u32 STAGE_RESERVED_UBOS = 1;
struct UnspecializedShader {
std::string code;
GLShader::ShaderEntries entries;
ProgramType program_type;
};
namespace {
/// Gets the address for the specified shader stage program
GPUVAddr GetShaderAddress(Core::System& system, Maxwell::ShaderProgram program) {
const auto& gpu{system.GPU().Maxwell3D()};
const auto& shader_config{gpu.regs.shader_config[static_cast<std::size_t>(program)]};
return gpu.regs.code_address.CodeAddress() + shader_config.offset;
}
/// Gets the shader program code from memory for the specified address
ProgramCode GetShaderCode(Tegra::MemoryManager& memory_manager, const GPUVAddr gpu_addr,
const u8* host_ptr) {
ProgramCode program_code(VideoCommon::Shader::MAX_PROGRAM_LENGTH);
ASSERT_OR_EXECUTE(host_ptr != nullptr, {
std::fill(program_code.begin(), program_code.end(), 0);
return program_code;
});
memory_manager.ReadBlockUnsafe(gpu_addr, program_code.data(),
program_code.size() * sizeof(u64));
return program_code;
}
/// Gets the shader type from a Maxwell program type
constexpr GLenum GetShaderType(ProgramType program_type) {
switch (program_type) {
case ProgramType::VertexA:
case ProgramType::VertexB:
return GL_VERTEX_SHADER;
case ProgramType::Geometry:
return GL_GEOMETRY_SHADER;
case ProgramType::Fragment:
return GL_FRAGMENT_SHADER;
case ProgramType::Compute:
return GL_COMPUTE_SHADER;
default:
return GL_NONE;
}
}
/// Gets if the current instruction offset is a scheduler instruction
constexpr bool IsSchedInstruction(std::size_t offset, std::size_t main_offset) {
// Sched instructions appear once every 4 instructions.
constexpr std::size_t SchedPeriod = 4;
const std::size_t absolute_offset = offset - main_offset;
return (absolute_offset % SchedPeriod) == 0;
}
/// Describes primitive behavior on geometry shaders
constexpr std::tuple<const char*, const char*, u32> GetPrimitiveDescription(GLenum primitive_mode) {
switch (primitive_mode) {
case GL_POINTS:
return {"points", "Points", 1};
case GL_LINES:
case GL_LINE_STRIP:
return {"lines", "Lines", 2};
case GL_LINES_ADJACENCY:
case GL_LINE_STRIP_ADJACENCY:
return {"lines_adjacency", "LinesAdj", 4};
case GL_TRIANGLES:
case GL_TRIANGLE_STRIP:
case GL_TRIANGLE_FAN:
return {"triangles", "Triangles", 3};
case GL_TRIANGLES_ADJACENCY:
case GL_TRIANGLE_STRIP_ADJACENCY:
return {"triangles_adjacency", "TrianglesAdj", 6};
default:
return {"points", "Invalid", 1};
}
}
ProgramType GetProgramType(Maxwell::ShaderProgram program) {
switch (program) {
case Maxwell::ShaderProgram::VertexA:
return ProgramType::VertexA;
case Maxwell::ShaderProgram::VertexB:
return ProgramType::VertexB;
case Maxwell::ShaderProgram::TesselationControl:
return ProgramType::TessellationControl;
case Maxwell::ShaderProgram::TesselationEval:
return ProgramType::TessellationEval;
case Maxwell::ShaderProgram::Geometry:
return ProgramType::Geometry;
case Maxwell::ShaderProgram::Fragment:
return ProgramType::Fragment;
}
UNREACHABLE();
return {};
}
/// Calculates the size of a program stream
std::size_t CalculateProgramSize(const GLShader::ProgramCode& program) {
constexpr std::size_t start_offset = 10;
// This is the encoded version of BRA that jumps to itself. All Nvidia
// shaders end with one.
constexpr u64 self_jumping_branch = 0xE2400FFFFF07000FULL;
constexpr u64 mask = 0xFFFFFFFFFF7FFFFFULL;
std::size_t offset = start_offset;
std::size_t size = start_offset * sizeof(u64);
while (offset < program.size()) {
const u64 instruction = program[offset];
if (!IsSchedInstruction(offset, start_offset)) {
if ((instruction & mask) == self_jumping_branch) {
// End on Maxwell's "nop" instruction
break;
}
if (instruction == 0) {
break;
}
}
size += sizeof(u64);
offset++;
}
// The last instruction is included in the program size
return std::min(size + sizeof(u64), program.size() * sizeof(u64));
}
/// Hashes one (or two) program streams
u64 GetUniqueIdentifier(ProgramType program_type, const ProgramCode& code,
const ProgramCode& code_b, std::size_t size_a = 0, std::size_t size_b = 0) {
if (size_a == 0) {
size_a = CalculateProgramSize(code);
}
u64 unique_identifier = Common::CityHash64(reinterpret_cast<const char*>(code.data()), size_a);
if (program_type != ProgramType::VertexA) {
return unique_identifier;
}
// VertexA programs include two programs
std::size_t seed = 0;
boost::hash_combine(seed, unique_identifier);
if (size_b == 0) {
size_b = CalculateProgramSize(code_b);
}
const u64 identifier_b =
Common::CityHash64(reinterpret_cast<const char*>(code_b.data()), size_b);
boost::hash_combine(seed, identifier_b);
return static_cast<u64>(seed);
}
/// Creates an unspecialized program from code streams
GLShader::ProgramResult CreateProgram(const Device& device, ProgramType program_type,
ProgramCode program_code, ProgramCode program_code_b) {
GLShader::ShaderSetup setup(program_code);
setup.program.size_a = CalculateProgramSize(program_code);
setup.program.size_b = 0;
if (program_type == ProgramType::VertexA) {
// VertexB is always enabled, so when VertexA is enabled, we have two vertex shaders.
// Conventional HW does not support this, so we combine VertexA and VertexB into one
// stage here.
setup.SetProgramB(program_code_b);
setup.program.size_b = CalculateProgramSize(program_code_b);
}
setup.program.unique_identifier = GetUniqueIdentifier(
program_type, program_code, program_code_b, setup.program.size_a, setup.program.size_b);
switch (program_type) {
case ProgramType::VertexA:
case ProgramType::VertexB:
return GLShader::GenerateVertexShader(device, setup);
case ProgramType::Geometry:
return GLShader::GenerateGeometryShader(device, setup);
case ProgramType::Fragment:
return GLShader::GenerateFragmentShader(device, setup);
case ProgramType::Compute:
return GLShader::GenerateComputeShader(device, setup);
default:
UNIMPLEMENTED_MSG("Unimplemented program_type={}", static_cast<u32>(program_type));
return {};
}
}
CachedProgram SpecializeShader(const std::string& code, const GLShader::ShaderEntries& entries,
ProgramType program_type, const ProgramVariant& variant,
bool hint_retrievable = false) {
auto base_bindings{variant.base_bindings};
const auto primitive_mode{variant.primitive_mode};
const auto texture_buffer_usage{variant.texture_buffer_usage};
std::string source = "#version 430 core\n"
"#extension GL_ARB_separate_shader_objects : enable\n"
"#extension GL_NV_gpu_shader5 : enable\n"
"#extension GL_NV_shader_thread_group : enable\n";
if (entries.shader_viewport_layer_array) {
source += "#extension GL_ARB_shader_viewport_layer_array : enable\n";
}
if (program_type == ProgramType::Compute) {
source += "#extension GL_ARB_compute_variable_group_size : require\n";
}
source += '\n';
if (program_type != ProgramType::Compute) {
source += fmt::format("#define EMULATION_UBO_BINDING {}\n", base_bindings.cbuf++);
}
for (const auto& cbuf : entries.const_buffers) {
source +=
fmt::format("#define CBUF_BINDING_{} {}\n", cbuf.GetIndex(), base_bindings.cbuf++);
}
for (const auto& gmem : entries.global_memory_entries) {
source += fmt::format("#define GMEM_BINDING_{}_{} {}\n", gmem.GetCbufIndex(),
gmem.GetCbufOffset(), base_bindings.gmem++);
}
for (const auto& sampler : entries.samplers) {
source += fmt::format("#define SAMPLER_BINDING_{} {}\n", sampler.GetIndex(),
base_bindings.sampler++);
}
for (const auto& image : entries.images) {
source +=
fmt::format("#define IMAGE_BINDING_{} {}\n", image.GetIndex(), base_bindings.image++);
}
// Transform 1D textures to texture samplers by declaring its preprocessor macros.
for (std::size_t i = 0; i < texture_buffer_usage.size(); ++i) {
if (!texture_buffer_usage.test(i)) {
continue;
}
source += fmt::format("#define SAMPLER_{}_IS_BUFFER", i);
}
if (program_type == ProgramType::Geometry) {
const auto [glsl_topology, debug_name, max_vertices] =
GetPrimitiveDescription(primitive_mode);
source += "layout (" + std::string(glsl_topology) + ") in;\n";
source += "#define MAX_VERTEX_INPUT " + std::to_string(max_vertices) + '\n';
}
if (program_type == ProgramType::Compute) {
source += "layout (local_size_variable) in;\n";
}
source += code;
OGLShader shader;
shader.Create(source.c_str(), GetShaderType(program_type));
auto program = std::make_shared<OGLProgram>();
program->Create(true, hint_retrievable, shader.handle);
return program;
}
std::set<GLenum> GetSupportedFormats() {
std::set<GLenum> supported_formats;
GLint num_formats{};
glGetIntegerv(GL_NUM_PROGRAM_BINARY_FORMATS, &num_formats);
std::vector<GLint> formats(num_formats);
glGetIntegerv(GL_PROGRAM_BINARY_FORMATS, formats.data());
for (const GLint format : formats)
supported_formats.insert(static_cast<GLenum>(format));
return supported_formats;
}
} // Anonymous namespace
CachedShader::CachedShader(const ShaderParameters& params, ProgramType program_type,
GLShader::ProgramResult result)
: RasterizerCacheObject{params.host_ptr}, host_ptr{params.host_ptr}, cpu_addr{params.cpu_addr},
unique_identifier{params.unique_identifier}, program_type{program_type},
disk_cache{params.disk_cache}, precompiled_programs{params.precompiled_programs},
entries{result.second}, code{std::move(result.first)}, shader_length{entries.shader_length} {}
Shader CachedShader::CreateStageFromMemory(const ShaderParameters& params,
Maxwell::ShaderProgram program_type,
ProgramCode&& program_code,
ProgramCode&& program_code_b) {
const auto code_size{CalculateProgramSize(program_code)};
const auto code_size_b{CalculateProgramSize(program_code_b)};
auto result{
CreateProgram(params.device, GetProgramType(program_type), program_code, program_code_b)};
if (result.first.empty()) {
// TODO(Rodrigo): Unimplemented shader stages hit here, avoid using these for now
return {};
}
params.disk_cache.SaveRaw(ShaderDiskCacheRaw(
params.unique_identifier, GetProgramType(program_type),
static_cast<u32>(code_size / sizeof(u64)), static_cast<u32>(code_size_b / sizeof(u64)),
std::move(program_code), std::move(program_code_b)));
return std::shared_ptr<CachedShader>(
new CachedShader(params, GetProgramType(program_type), std::move(result)));
}
Shader CachedShader::CreateStageFromCache(const ShaderParameters& params,
Maxwell::ShaderProgram program_type,
GLShader::ProgramResult result) {
return std::shared_ptr<CachedShader>(
new CachedShader(params, GetProgramType(program_type), std::move(result)));
}
Shader CachedShader::CreateKernelFromMemory(const ShaderParameters& params, ProgramCode&& code) {
auto result{CreateProgram(params.device, ProgramType::Compute, code, {})};
const auto code_size{CalculateProgramSize(code)};
params.disk_cache.SaveRaw(ShaderDiskCacheRaw(params.unique_identifier, ProgramType::Compute,
static_cast<u32>(code_size / sizeof(u64)), 0,
std::move(code), {}));
return std::shared_ptr<CachedShader>(
new CachedShader(params, ProgramType::Compute, std::move(result)));
}
Shader CachedShader::CreateKernelFromCache(const ShaderParameters& params,
GLShader::ProgramResult result) {
return std::shared_ptr<CachedShader>(
new CachedShader(params, ProgramType::Compute, std::move(result)));
}
std::tuple<GLuint, BaseBindings> CachedShader::GetProgramHandle(const ProgramVariant& variant) {
GLuint handle{};
if (program_type == ProgramType::Geometry) {
handle = GetGeometryShader(variant);
} else {
const auto [entry, is_cache_miss] = programs.try_emplace(variant);
auto& program = entry->second;
if (is_cache_miss) {
program = TryLoadProgram(variant);
if (!program) {
program = SpecializeShader(code, entries, program_type, variant);
disk_cache.SaveUsage(GetUsage(variant));
}
LabelGLObject(GL_PROGRAM, program->handle, cpu_addr);
}
handle = program->handle;
}
auto base_bindings = variant.base_bindings;
base_bindings.cbuf += static_cast<u32>(entries.const_buffers.size());
if (program_type != ProgramType::Compute) {
base_bindings.cbuf += STAGE_RESERVED_UBOS;
}
base_bindings.gmem += static_cast<u32>(entries.global_memory_entries.size());
base_bindings.sampler += static_cast<u32>(entries.samplers.size());
return {handle, base_bindings};
}
GLuint CachedShader::GetGeometryShader(const ProgramVariant& variant) {
const auto [entry, is_cache_miss] = geometry_programs.try_emplace(variant);
auto& programs = entry->second;
switch (variant.primitive_mode) {
case GL_POINTS:
return LazyGeometryProgram(programs.points, variant);
case GL_LINES:
case GL_LINE_STRIP:
return LazyGeometryProgram(programs.lines, variant);
case GL_LINES_ADJACENCY:
case GL_LINE_STRIP_ADJACENCY:
return LazyGeometryProgram(programs.lines_adjacency, variant);
case GL_TRIANGLES:
case GL_TRIANGLE_STRIP:
case GL_TRIANGLE_FAN:
return LazyGeometryProgram(programs.triangles, variant);
case GL_TRIANGLES_ADJACENCY:
case GL_TRIANGLE_STRIP_ADJACENCY:
return LazyGeometryProgram(programs.triangles_adjacency, variant);
default:
UNREACHABLE_MSG("Unknown primitive mode.");
return LazyGeometryProgram(programs.points, variant);
}
}
GLuint CachedShader::LazyGeometryProgram(CachedProgram& target_program,
const ProgramVariant& variant) {
if (target_program) {
return target_program->handle;
}
const auto [glsl_name, debug_name, vertices] = GetPrimitiveDescription(variant.primitive_mode);
target_program = TryLoadProgram(variant);
if (!target_program) {
target_program = SpecializeShader(code, entries, program_type, variant);
disk_cache.SaveUsage(GetUsage(variant));
}
LabelGLObject(GL_PROGRAM, target_program->handle, cpu_addr, debug_name);
return target_program->handle;
};
CachedProgram CachedShader::TryLoadProgram(const ProgramVariant& variant) const {
const auto found = precompiled_programs.find(GetUsage(variant));
if (found == precompiled_programs.end()) {
return {};
}
return found->second;
}
ShaderDiskCacheUsage CachedShader::GetUsage(const ProgramVariant& variant) const {
ShaderDiskCacheUsage usage;
usage.unique_identifier = unique_identifier;
usage.variant = variant;
return usage;
}
ShaderCacheOpenGL::ShaderCacheOpenGL(RasterizerOpenGL& rasterizer, Core::System& system,
Core::Frontend::EmuWindow& emu_window, const Device& device)
: RasterizerCache{rasterizer}, system{system}, emu_window{emu_window}, device{device},
disk_cache{system} {}
void ShaderCacheOpenGL::LoadDiskCache(const std::atomic_bool& stop_loading,
const VideoCore::DiskResourceLoadCallback& callback) {
const auto transferable = disk_cache.LoadTransferable();
if (!transferable) {
return;
}
const auto [raws, shader_usages] = *transferable;
auto [decompiled, dumps] = disk_cache.LoadPrecompiled();
const auto supported_formats{GetSupportedFormats()};
const auto unspecialized_shaders{
GenerateUnspecializedShaders(stop_loading, callback, raws, decompiled)};
if (stop_loading) {
return;
}
// Track if precompiled cache was altered during loading to know if we have to serialize the
// virtual precompiled cache file back to the hard drive
bool precompiled_cache_altered = false;
// Inform the frontend about shader build initialization
if (callback) {
callback(VideoCore::LoadCallbackStage::Build, 0, shader_usages.size());
}
std::mutex mutex;
std::size_t built_shaders = 0; // It doesn't have be atomic since it's used behind a mutex
std::atomic_bool compilation_failed = false;
const auto Worker = [&](Core::Frontend::GraphicsContext* context, std::size_t begin,
std::size_t end, const std::vector<ShaderDiskCacheUsage>& shader_usages,
const ShaderDumpsMap& dumps) {
context->MakeCurrent();
SCOPE_EXIT({ return context->DoneCurrent(); });
for (std::size_t i = begin; i < end; ++i) {
if (stop_loading || compilation_failed) {
return;
}
const auto& usage{shader_usages[i]};
LOG_INFO(Render_OpenGL, "Building shader {:016x} (index {} of {})",
usage.unique_identifier, i, shader_usages.size());
const auto& unspecialized{unspecialized_shaders.at(usage.unique_identifier)};
const auto dump{dumps.find(usage)};
CachedProgram shader;
if (dump != dumps.end()) {
// If the shader is dumped, attempt to load it with
shader = GeneratePrecompiledProgram(dump->second, supported_formats);
if (!shader) {
compilation_failed = true;
return;
}
}
if (!shader) {
shader = SpecializeShader(unspecialized.code, unspecialized.entries,
unspecialized.program_type, usage.variant, true);
}
std::scoped_lock lock(mutex);
if (callback) {
callback(VideoCore::LoadCallbackStage::Build, ++built_shaders,
shader_usages.size());
}
precompiled_programs.emplace(usage, std::move(shader));
}
};
const auto num_workers{static_cast<std::size_t>(std::thread::hardware_concurrency() + 1)};
const std::size_t bucket_size{shader_usages.size() / num_workers};
std::vector<std::unique_ptr<Core::Frontend::GraphicsContext>> contexts(num_workers);
std::vector<std::thread> threads(num_workers);
for (std::size_t i = 0; i < num_workers; ++i) {
const bool is_last_worker = i + 1 == num_workers;
const std::size_t start{bucket_size * i};
const std::size_t end{is_last_worker ? shader_usages.size() : start + bucket_size};
// On some platforms the shared context has to be created from the GUI thread
contexts[i] = emu_window.CreateSharedContext();
threads[i] = std::thread(Worker, contexts[i].get(), start, end, shader_usages, dumps);
}
for (auto& thread : threads) {
thread.join();
}
if (compilation_failed) {
// Invalidate the precompiled cache if a shader dumped shader was rejected
disk_cache.InvalidatePrecompiled();
dumps.clear();
precompiled_cache_altered = true;
return;
}
if (stop_loading) {
return;
}
// TODO(Rodrigo): Do state tracking for transferable shaders and do a dummy draw before
// precompiling them
for (std::size_t i = 0; i < shader_usages.size(); ++i) {
const auto& usage{shader_usages[i]};
if (dumps.find(usage) == dumps.end()) {
const auto& program{precompiled_programs.at(usage)};
disk_cache.SaveDump(usage, program->handle);
precompiled_cache_altered = true;
}
}
if (precompiled_cache_altered) {
disk_cache.SaveVirtualPrecompiledFile();
}
}
CachedProgram ShaderCacheOpenGL::GeneratePrecompiledProgram(
const ShaderDiskCacheDump& dump, const std::set<GLenum>& supported_formats) {
if (supported_formats.find(dump.binary_format) == supported_formats.end()) {
LOG_INFO(Render_OpenGL, "Precompiled cache entry with unsupported format - removing");
return {};
}
CachedProgram shader = std::make_shared<OGLProgram>();
shader->handle = glCreateProgram();
glProgramParameteri(shader->handle, GL_PROGRAM_SEPARABLE, GL_TRUE);
glProgramBinary(shader->handle, dump.binary_format, dump.binary.data(),
static_cast<GLsizei>(dump.binary.size()));
GLint link_status{};
glGetProgramiv(shader->handle, GL_LINK_STATUS, &link_status);
if (link_status == GL_FALSE) {
LOG_INFO(Render_OpenGL, "Precompiled cache rejected by the driver - removing");
return {};
}
return shader;
}
std::unordered_map<u64, UnspecializedShader> ShaderCacheOpenGL::GenerateUnspecializedShaders(
const std::atomic_bool& stop_loading, const VideoCore::DiskResourceLoadCallback& callback,
const std::vector<ShaderDiskCacheRaw>& raws,
const std::unordered_map<u64, ShaderDiskCacheDecompiled>& decompiled) {
std::unordered_map<u64, UnspecializedShader> unspecialized;
if (callback) {
callback(VideoCore::LoadCallbackStage::Decompile, 0, raws.size());
}
for (std::size_t i = 0; i < raws.size(); ++i) {
if (stop_loading) {
return {};
}
const auto& raw{raws[i]};
const u64 unique_identifier{raw.GetUniqueIdentifier()};
const u64 calculated_hash{
GetUniqueIdentifier(raw.GetProgramType(), raw.GetProgramCode(), raw.GetProgramCodeB())};
if (unique_identifier != calculated_hash) {
LOG_ERROR(
Render_OpenGL,
"Invalid hash in entry={:016x} (obtained hash={:016x}) - removing shader cache",
raw.GetUniqueIdentifier(), calculated_hash);
disk_cache.InvalidateTransferable();
return {};
}
GLShader::ProgramResult result;
if (const auto it = decompiled.find(unique_identifier); it != decompiled.end()) {
// If it's stored in the precompiled file, avoid decompiling it here
const auto& stored_decompiled{it->second};
result = {stored_decompiled.code, stored_decompiled.entries};
} else {
// Otherwise decompile the shader at boot and save the result to the decompiled file
result = CreateProgram(device, raw.GetProgramType(), raw.GetProgramCode(),
raw.GetProgramCodeB());
disk_cache.SaveDecompiled(unique_identifier, result.first, result.second);
}
precompiled_shaders.insert({unique_identifier, result});
unspecialized.insert(
{raw.GetUniqueIdentifier(),
{std::move(result.first), std::move(result.second), raw.GetProgramType()}});
if (callback) {
callback(VideoCore::LoadCallbackStage::Decompile, i, raws.size());
}
}
return unspecialized;
}
Shader ShaderCacheOpenGL::GetStageProgram(Maxwell::ShaderProgram program) {
if (!system.GPU().Maxwell3D().dirty.shaders) {
return last_shaders[static_cast<std::size_t>(program)];
}
auto& memory_manager{system.GPU().MemoryManager()};
const GPUVAddr program_addr{GetShaderAddress(system, program)};
// Look up shader in the cache based on address
const auto host_ptr{memory_manager.GetPointer(program_addr)};
Shader shader{TryGet(host_ptr)};
if (shader) {
return last_shaders[static_cast<std::size_t>(program)] = shader;
}
// No shader found - create a new one
ProgramCode program_code{GetShaderCode(memory_manager, program_addr, host_ptr)};
ProgramCode program_code_b;
const bool is_program_a{program == Maxwell::ShaderProgram::VertexA};
if (is_program_a) {
const GPUVAddr program_addr_b{GetShaderAddress(system, Maxwell::ShaderProgram::VertexB)};
program_code_b = GetShaderCode(memory_manager, program_addr_b,
memory_manager.GetPointer(program_addr_b));
}
const auto unique_identifier =
GetUniqueIdentifier(GetProgramType(program), program_code, program_code_b);
const auto cpu_addr{*memory_manager.GpuToCpuAddress(program_addr)};
const ShaderParameters params{disk_cache, precompiled_programs, device, cpu_addr,
host_ptr, unique_identifier};
const auto found = precompiled_shaders.find(unique_identifier);
if (found == precompiled_shaders.end()) {
shader = CachedShader::CreateStageFromMemory(params, program, std::move(program_code),
std::move(program_code_b));
} else {
shader = CachedShader::CreateStageFromCache(params, program, found->second);
}
Register(shader);
return last_shaders[static_cast<std::size_t>(program)] = shader;
}
Shader ShaderCacheOpenGL::GetComputeKernel(GPUVAddr code_addr) {
auto& memory_manager{system.GPU().MemoryManager()};
const auto host_ptr{memory_manager.GetPointer(code_addr)};
auto kernel = TryGet(host_ptr);
if (kernel) {
return kernel;
}
// No kernel found - create a new one
auto code{GetShaderCode(memory_manager, code_addr, host_ptr)};
const auto unique_identifier{GetUniqueIdentifier(ProgramType::Compute, code, {})};
const auto cpu_addr{*memory_manager.GpuToCpuAddress(code_addr)};
const ShaderParameters params{disk_cache, precompiled_programs, device, cpu_addr,
host_ptr, unique_identifier};
const auto found = precompiled_shaders.find(unique_identifier);
if (found == precompiled_shaders.end()) {
kernel = CachedShader::CreateKernelFromMemory(params, std::move(code));
} else {
kernel = CachedShader::CreateKernelFromCache(params, found->second);
}
Register(kernel);
return kernel;
}
} // namespace OpenGL