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Implemented a shader unique identifier.

This commit is contained in:
Fernando Sahmkow 2018-12-09 17:33:10 -04:00 committed by FernandoS27
parent f761e3ef86
commit d5d77848e6
4 changed files with 57 additions and 0 deletions

View file

@ -2,7 +2,9 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <boost/functional/hash.hpp>
#include "common/assert.h"
#include "common/hash.h"
#include "core/core.h"
#include "core/memory.h"
#include "video_core/engines/maxwell_3d.h"
@ -66,14 +68,17 @@ CachedShader::CachedShader(VAddr addr, Maxwell::ShaderProgram program_type)
// stage here.
setup.SetProgramB(GetShaderCode(GetShaderAddress(Maxwell::ShaderProgram::VertexB)));
case Maxwell::ShaderProgram::VertexB:
CalculateProperties();
program_result = GLShader::GenerateVertexShader(setup);
gl_type = GL_VERTEX_SHADER;
break;
case Maxwell::ShaderProgram::Geometry:
CalculateProperties();
program_result = GLShader::GenerateGeometryShader(setup);
gl_type = GL_GEOMETRY_SHADER;
break;
case Maxwell::ShaderProgram::Fragment:
CalculateProperties();
program_result = GLShader::GenerateFragmentShader(setup);
gl_type = GL_FRAGMENT_SHADER;
break;
@ -140,6 +145,46 @@ GLuint CachedShader::LazyGeometryProgram(OGLProgram& target_program,
return target_program.handle;
};
static bool IsSchedInstruction(u32 offset, u32 main_offset) {
// sched instructions appear once every 4 instructions.
static constexpr std::size_t SchedPeriod = 4;
const std::size_t absolute_offset = offset - main_offset;
return (absolute_offset % SchedPeriod) == 0;
}
static std::size_t CalculateProgramSize(const GLShader::ProgramCode& program) {
const std::size_t start_offset = 10;
std::size_t offset = start_offset;
std::size_t size = start_offset * sizeof(u64);
while (offset < program.size()) {
const u64 inst = program[offset];
if (!IsSchedInstruction(offset, start_offset)) {
if (inst == 0 || (inst >> 52) == 0x50b) {
break;
}
}
size += 8;
offset++;
}
return size;
}
void CachedShader::CalculateProperties() {
setup.program.real_size = CalculateProgramSize(setup.program.code);
setup.program.real_size_b = 0;
setup.program.unique_identifier = Common::CityHash64(
reinterpret_cast<const char*>(setup.program.code.data()), setup.program.real_size);
if (program_type == Maxwell::ShaderProgram::VertexA) {
std::size_t seed = 0;
boost::hash_combine(seed, setup.program.unique_identifier);
setup.program.real_size_b = CalculateProgramSize(setup.program.code_b);
const u64 identifier_b = Common::CityHash64(
reinterpret_cast<const char*>(setup.program.code_b.data()), setup.program.real_size_b);
boost::hash_combine(seed, identifier_b);
setup.program.unique_identifier = static_cast<u64>(seed);
}
}
ShaderCacheOpenGL::ShaderCacheOpenGL(RasterizerOpenGL& rasterizer) : RasterizerCache{rasterizer} {}
Shader ShaderCacheOpenGL::GetStageProgram(Maxwell::ShaderProgram program) {

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@ -81,6 +81,8 @@ private:
GLuint LazyGeometryProgram(OGLProgram& target_program, const std::string& glsl_topology,
u32 max_vertices, const std::string& debug_name);
void CalculateProperties();
VAddr addr;
std::size_t shader_length;
Maxwell::ShaderProgram program_type;

View file

@ -2,6 +2,7 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <fmt/format.h>
#include "common/assert.h"
#include "video_core/engines/maxwell_3d.h"
#include "video_core/renderer_opengl/gl_shader_decompiler.h"
@ -16,6 +17,8 @@ static constexpr u32 PROGRAM_OFFSET{10};
ProgramResult GenerateVertexShader(const ShaderSetup& setup) {
std::string out = "#version 430 core\n";
out += "#extension GL_ARB_separate_shader_objects : enable\n\n";
const std::string id = fmt::format("{:016x}", setup.program.unique_identifier);
out += "// Shader Unique Id: VS" + id + "\n\n";
out += Decompiler::GetCommonDeclarations();
out += R"(
@ -84,6 +87,8 @@ void main() {
ProgramResult GenerateGeometryShader(const ShaderSetup& setup) {
// Version is intentionally skipped in shader generation, it's added by the lazy compilation.
std::string out = "#extension GL_ARB_separate_shader_objects : enable\n\n";
const std::string id = fmt::format("{:016x}", setup.program.unique_identifier);
out += "// Shader Unique Id: GS" + id + "\n\n";
out += Decompiler::GetCommonDeclarations();
out += "bool exec_geometry();\n";
@ -117,6 +122,8 @@ void main() {
ProgramResult GenerateFragmentShader(const ShaderSetup& setup) {
std::string out = "#version 430 core\n";
out += "#extension GL_ARB_separate_shader_objects : enable\n\n";
const std::string id = fmt::format("{:016x}", setup.program.unique_identifier);
out += "// Shader Unique Id: FS" + id + "\n\n";
out += Decompiler::GetCommonDeclarations();
out += "bool exec_fragment();\n";

View file

@ -177,6 +177,9 @@ struct ShaderSetup {
struct {
ProgramCode code;
ProgramCode code_b; // Used for dual vertex shaders
u64 unique_identifier;
std::size_t real_size;
std::size_t real_size_b;
} program;
/// Used in scenarios where we have a dual vertex shaders