rewrite

implementations/Crafter.Build-Shader.cpp

@@ -0,0 +1,100 @@
+/*
+Crafter® Build
+Copyright (C) 2025 Catcrafts®
+Catcrafts.net
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License version 3.0 as published by the Free Software Foundation;
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+*/
+
+module;
+#include <glslang/SPIRV/GlslangToSpv.h>
+#include <glslang/Public/ShaderLang.h>
+#include <glslang/Public/ResourceLimits.h>
+#include "../lib/DirStackFileIncluder.h"
+module Crafter.Build:Shader_impl;
+import :Shader;
+import std;
+namespace fs = std::filesystem;
+
+namespace Crafter {
+    Shader::Shader(fs::path&& path, std::string&& entrypoint, EShLanguage type) : path(std::move(path)), entrypoint(std::move(entrypoint)), type(type) {
+
+    }
+    bool Shader::Check(const fs::path& outputDir) const {
+        return fs::exists((outputDir/path.filename()).generic_string()+".spv") && fs::last_write_time(path.generic_string()+".glsl") < fs::last_write_time((outputDir/path.filename()).generic_string()+".spv");
+    }
+    void Shader::Compile(const fs::path& outputDir) const {
+        glslang::InitializeProcess();
+        EShMessages messages = static_cast<EShMessages>(EShMsgDefault | EShMsgVulkanRules | EShMsgSpvRules);
+        std::ifstream fileStream(path, std::ios::in | std::ios::binary);
+        if (!fileStream) {
+            throw std::ios_base::failure("Failed to open file: " + path.string());
+        }
+        std::ostringstream contents;
+        contents << fileStream.rdbuf();
+        std::string src = contents.str();
+    
+        const char *file_name_list[1] = {""};
+        const char *shader_source     = reinterpret_cast<const char *>(src.data());
+    
+        glslang::TShader shader(type);
+        shader.setStringsWithLengthsAndNames(&shader_source, nullptr, file_name_list, 1);
+        shader.setEntryPoint(entrypoint.c_str());
+        shader.setSourceEntryPoint(entrypoint.c_str());
+        shader.setEnvTarget(glslang::EShTargetSpv, glslang::EShTargetSpv_1_4);
+        DirStackFileIncluder includeDir;
+        includeDir.pushExternalLocalDirectory(path.parent_path().generic_string());
+        std::string info_log;
+        if (!shader.parse(GetDefaultResources(), 100, false, messages, includeDir))
+        {
+            info_log = std::string(shader.getInfoLog()) + std::string(shader.getInfoDebugLog());
+        }
+        // Add shader to new program object.
+        glslang::TProgram program;
+        program.addShader(&shader);
+    
+        // Link program.
+        if (!program.link(messages))
+        {
+            info_log = std::string(program.getInfoLog()) + std::string(program.getInfoDebugLog());
+        }
+    
+        // Save any info log that was generated.
+        if (shader.getInfoLog())
+        {
+            info_log += std::string(shader.getInfoLog()) + std::string(shader.getInfoDebugLog());
+        }
+    
+        if (program.getInfoLog())
+        {
+            info_log += std::string(program.getInfoLog()) + std::string(program.getInfoDebugLog());
+        }
+    
+        glslang::TIntermediate* intermediate = program.getIntermediate(type);
+        if (!intermediate)
+        {
+            info_log += "Failed to get shared intermediate code.";
+        }
+    
+        spv::SpvBuildLogger logger;
+        std::vector<std::uint32_t> spirv;
+        std::cout << info_log;
+        glslang::GlslangToSpv(*intermediate, spirv, &logger);
+        std::cout << logger.getAllMessages();
+        glslang::FinalizeProcess();
+        fs::path filename = path.filename().replace_extension("spv");
+        std::ofstream file(outputDir/filename, std::ios::binary);
+        file.write(reinterpret_cast<const char*>(spirv.data()), spirv.size() * sizeof(std::uint32_t));
+    }
+}