Files
Xenia-Canary/src/xenia/gpu/shader_compiler_main.cc
2017-12-20 16:27:01 -06:00

128 lines
4.5 KiB
C++

/**
******************************************************************************
* Xenia : Xbox 360 Emulator Research Project *
******************************************************************************
* Copyright 2015 Ben Vanik. All rights reserved. *
* Released under the BSD license - see LICENSE in the root for more details. *
******************************************************************************
*/
#include <gflags/gflags.h>
#include <cinttypes>
#include <cstring>
#include <string>
#include <vector>
#include "xenia/base/logging.h"
#include "xenia/base/main.h"
#include "xenia/base/string.h"
#include "xenia/gpu/glsl_shader_translator.h"
#include "xenia/gpu/shader_translator.h"
#include "xenia/gpu/spirv_shader_translator.h"
#include "xenia/ui/spirv/spirv_disassembler.h"
DEFINE_string(shader_input, "", "Input shader binary file path.");
DEFINE_string(shader_input_type, "",
"'vs', 'ps', or unspecified to infer from the given filename.");
DEFINE_string(shader_output, "", "Output shader file path.");
DEFINE_string(shader_output_type, "ucode",
"Translator to use: [ucode, glsl45, spirv, spirvtext].");
namespace xe {
namespace gpu {
int shader_compiler_main(const std::vector<std::wstring>& args) {
ShaderType shader_type;
if (!FLAGS_shader_input_type.empty()) {
if (FLAGS_shader_input_type == "vs") {
shader_type = ShaderType::kVertex;
} else if (FLAGS_shader_input_type == "ps") {
shader_type = ShaderType::kPixel;
} else {
XELOGE("Invalid --shader_input_type; must be 'vs' or 'ps'.");
return 1;
}
} else {
auto last_dot = FLAGS_shader_input.find_last_of('.');
bool valid_type = false;
if (last_dot != std::string::npos) {
if (FLAGS_shader_input.substr(last_dot) == ".vs") {
shader_type = ShaderType::kVertex;
valid_type = true;
} else if (FLAGS_shader_input.substr(last_dot) == ".ps") {
shader_type = ShaderType::kPixel;
valid_type = true;
}
}
if (!valid_type) {
XELOGE(
"File type not recognized (use .vs, .ps or "
"--shader_input_type=vs|ps).");
return 1;
}
}
auto input_file = fopen(FLAGS_shader_input.c_str(), "rb");
if (!input_file) {
XELOGE("Unable to open input file: %s", FLAGS_shader_input.c_str());
return 1;
}
fseek(input_file, 0, SEEK_END);
size_t input_file_size = ftell(input_file);
fseek(input_file, 0, SEEK_SET);
std::vector<uint32_t> ucode_dwords(input_file_size / 4);
fread(ucode_dwords.data(), 4, ucode_dwords.size(), input_file);
fclose(input_file);
XELOGI("Opened %s as a %s shader, %" PRId64 " words (%" PRId64 " bytes).",
FLAGS_shader_input.c_str(),
shader_type == ShaderType::kVertex ? "vertex" : "pixel",
ucode_dwords.size(), ucode_dwords.size() * 4);
// TODO(benvanik): hash? need to return the data to big-endian format first.
uint64_t ucode_data_hash = 0;
auto shader = std::make_unique<Shader>(
shader_type, ucode_data_hash, ucode_dwords.data(), ucode_dwords.size());
std::unique_ptr<ShaderTranslator> translator;
if (FLAGS_shader_output_type == "spirv" ||
FLAGS_shader_output_type == "spirvtext") {
translator = std::make_unique<SpirvShaderTranslator>();
} else if (FLAGS_shader_output_type == "glsl45") {
translator = std::make_unique<GlslShaderTranslator>(
GlslShaderTranslator::Dialect::kGL45);
} else {
translator = std::make_unique<UcodeShaderTranslator>();
}
translator->Translate(shader.get());
const void* source_data = shader->translated_binary().data();
size_t source_data_size = shader->translated_binary().size();
std::unique_ptr<xe::ui::spirv::SpirvDisassembler::Result> spirv_disasm_result;
if (FLAGS_shader_output_type == "spirvtext") {
// Disassemble SPIRV.
spirv_disasm_result = xe::ui::spirv::SpirvDisassembler().Disassemble(
reinterpret_cast<const uint32_t*>(source_data), source_data_size / 4);
source_data = spirv_disasm_result->text();
source_data_size = std::strlen(spirv_disasm_result->text()) + 1;
}
if (!FLAGS_shader_output.empty()) {
auto output_file = fopen(FLAGS_shader_output.c_str(), "wb");
fwrite(source_data, 1, source_data_size, output_file);
fclose(output_file);
}
return 0;
}
} // namespace gpu
} // namespace xe
DEFINE_ENTRY_POINT(L"xenia-gpu-shader-compiler",
L"xenia-gpu-shader-compiler shader.bin",
xe::gpu::shader_compiler_main);