Joshua Goins
80a74c15cd
The web backend however, is being kept - for the future in case WebGPU gets added back or WebGL support is added
96 lines
3.3 KiB
C++
Executable file
96 lines
3.3 KiB
C++
Executable file
#include <sstream>
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#include <filesystem>
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#include "shadercompiler.hpp"
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#include "log.hpp"
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#include "string_utils.hpp"
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bool has_extension(const std::filesystem::path& path, const std::string_view extension) {
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return string_contains(path.filename().string(), extension);
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}
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int main(int argc, char* argv[]) {
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if(argc < 2) {
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prism::log("Not enough arguments!");
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return -1;
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}
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shader_compiler.set_include_path(std::filesystem::current_path().string());
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std::filesystem::path source_path = argv[1];
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std::filesystem::path destination_path = argv[2];
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ShaderLanguage language = ShaderLanguage::SPIRV;
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std::string_view shader_language_string = argv[3];
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if(shader_language_string == "spv") {
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language = ShaderLanguage::SPIRV;
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} else if(shader_language_string == "msl") {
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language = ShaderLanguage::MSL;
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} else if(shader_language_string == "glsl") {
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language = ShaderLanguage::GLSL;
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} else if(shader_language_string == "hlsl") {
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language = ShaderLanguage::HLSL;
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}
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CompileOptions options;
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std::string_view extra_options = argc > 4 ? argv[4] : "";
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if(extra_options == "mobile")
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options.is_apple_mobile = true;
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std::ifstream t(source_path);
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std::stringstream buffer;
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buffer << t.rdbuf();
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if(has_extension(source_path, "nocompile")) {
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destination_path = remove_substring(destination_path.string(), ".nocompile"); // remove extension
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std::ofstream out(destination_path);
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out << buffer.rdbuf();
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} else {
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ShaderStage stage = ShaderStage::Vertex;
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if(has_extension(source_path, ".vert"))
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stage = ShaderStage::Vertex;
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else if(has_extension(source_path, ".frag"))
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stage = ShaderStage::Fragment;
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else if(has_extension(source_path, ".comp"))
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stage = ShaderStage::Compute;
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const auto compiled_source = shader_compiler.compile(ShaderLanguage::GLSL, stage, ShaderSource(buffer.str()), language, options);
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if(!compiled_source.has_value()) {
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prism::log("Error when compiling {}!", source_path.string());
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return -1;
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}
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switch(language) {
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// right now, WGSL is outputted as SPIR-V with some WGSL compatibility stuff included
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case ShaderLanguage::SPIRV:
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{
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const auto spirv = compiled_source->as_bytecode();
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std::ofstream out(destination_path, std::ios::binary); // remove .glsl
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out.write((char*)spirv.data(), spirv.size() * sizeof(uint32_t));
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}
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break;
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case ShaderLanguage::MSL:
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{
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std::ofstream out(destination_path); // remove .glsl
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out << compiled_source->as_string();
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}
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break;
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case ShaderLanguage::HLSL:
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{
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std::ofstream out(destination_path); // remove .glsl
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out << compiled_source->as_string();
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}
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break;
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default:
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break;
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}
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}
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// TODO: output disabled for now, will have to expose in a better arg system
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//prism::log::info(System::Core, "Successfully written shader from {} to {}.", source_path, destination_path);
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return 0;
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}
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