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shader/memory_util: Deduplicate code

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Deduplicate code shared between vk_pipeline_cache and gl_shader_cache as
well as shader decoder code.

While we are at it, fix a bug in gl_shader_cache where compute shaders
had an start offset of a stage shader.
This commit is contained in:
ReinUsesLisp 2020-04-24 01:44:14 -03:00
parent 26f2820ae3
commit ddd82ef42b
9 changed files with 153 additions and 159 deletions
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82
src/video_core/renderer_opengl/gl_shader_cache.cpp
View file

@ -10,8 +10,6 @@
#include <thread>
#include <unordered_set>
#include <boost/functional/hash.hpp>
#include "common/alignment.h"
#include "common/assert.h"
#include "common/logging/log.h"
@ -28,76 +26,26 @@
#include "video_core/renderer_opengl/gl_shader_disk_cache.h"
#include "video_core/renderer_opengl/gl_state_tracker.h"
#include "video_core/renderer_opengl/utils.h"
#include "video_core/shader/memory_util.h"
#include "video_core/shader/registry.h"
#include "video_core/shader/shader_ir.h"
namespace OpenGL {
using Tegra::Engines::ShaderType;
using VideoCommon::Shader::GetShaderAddress;
using VideoCommon::Shader::GetShaderCode;
using VideoCommon::Shader::GetUniqueIdentifier;
using VideoCommon::Shader::KERNEL_MAIN_OFFSET;
using VideoCommon::Shader::ProgramCode;
using VideoCommon::Shader::Registry;
using VideoCommon::Shader::ShaderIR;
using VideoCommon::Shader::STAGE_MAIN_OFFSET;
namespace {
constexpr u32 STAGE_MAIN_OFFSET = 10;
constexpr u32 KERNEL_MAIN_OFFSET = 0;
constexpr VideoCommon::Shader::CompilerSettings COMPILER_SETTINGS{};
/// 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 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;
}
/// Calculates the size of a program stream
std::size_t CalculateProgramSize(const 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;
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;
}
}
offset++;
}
// The last instruction is included in the program size
return std::min(offset + 1, program.size());
}
/// 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 code(VideoCommon::Shader::MAX_PROGRAM_LENGTH);
ASSERT_OR_EXECUTE(host_ptr != nullptr, {
std::fill(code.begin(), code.end(), 0);
return code;
});
memory_manager.ReadBlockUnsafe(gpu_addr, code.data(), code.size() * sizeof(u64));
code.resize(CalculateProgramSize(code));
return code;
}
/// Gets the shader type from a Maxwell program type
constexpr GLenum GetGLShaderType(ShaderType shader_type) {
switch (shader_type) {
@ -114,17 +62,6 @@ constexpr GLenum GetGLShaderType(ShaderType shader_type) {
}
}
/// Hashes one (or two) program streams
u64 GetUniqueIdentifier(ShaderType shader_type, bool is_a, const ProgramCode& code,
const ProgramCode& code_b = {}) {
u64 unique_identifier = boost::hash_value(code);
if (is_a) {
// VertexA programs include two programs
boost::hash_combine(unique_identifier, boost::hash_value(code_b));
}
return unique_identifier;
}
constexpr const char* GetShaderTypeName(ShaderType shader_type) {
switch (shader_type) {
case ShaderType::Vertex:
@ -456,11 +393,12 @@ Shader ShaderCacheOpenGL::GetStageProgram(Maxwell::ShaderProgram program) {
const auto host_ptr{memory_manager.GetPointer(address)};
// No shader found - create a new one
ProgramCode code{GetShaderCode(memory_manager, address, host_ptr)};
ProgramCode code{GetShaderCode(memory_manager, address, host_ptr, false)};
ProgramCode code_b;
if (program == Maxwell::ShaderProgram::VertexA) {
const GPUVAddr address_b{GetShaderAddress(system, Maxwell::ShaderProgram::VertexB)};
code_b = GetShaderCode(memory_manager, address_b, memory_manager.GetPointer(address_b));
const u8* host_ptr_b = memory_manager.GetPointer(address_b);
code_b = GetShaderCode(memory_manager, address_b, host_ptr_b, false);
}
const auto unique_identifier = GetUniqueIdentifier(
@ -498,7 +436,7 @@ Shader ShaderCacheOpenGL::GetComputeKernel(GPUVAddr code_addr) {
const auto host_ptr{memory_manager.GetPointer(code_addr)};
// No kernel found, create a new one
auto code{GetShaderCode(memory_manager, code_addr, host_ptr)};
auto code{GetShaderCode(memory_manager, code_addr, host_ptr, true)};
const auto unique_identifier{GetUniqueIdentifier(ShaderType::Compute, false, code)};
const ShaderParameters params{system, disk_cache, device,