Crafter.Graphics/interfaces/Crafter.Graphics-ShaderVulkan.cppm

/*
Crafter®.Graphics
Copyright (C) 2026 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;
#ifdef CRAFTER_GRAPHICS_RENDERER_VULKAN
#include "vulkan/vulkan.h"
#endif
export module Crafter.Graphics:ShaderVulkan;
#ifdef CRAFTER_GRAPHICS_RENDERER_VULKAN
import std;
import :Device;
import :Types;

export namespace Crafter {
    class VulkanShader {
        public:
        std::vector<VkSpecializationMapEntry> specilizations;
        VkSpecializationInfo* specilizationInfo;
        VkShaderStageFlagBits stage;
        std::string entrypoint;
        VkShaderModule shader;
        VulkanShader(const std::filesystem::path& path, std::string entrypoint, VkShaderStageFlagBits stage, VkSpecializationInfo* specilizationInfo) : stage(stage), entrypoint(entrypoint), specilizationInfo(specilizationInfo) {
            std::ifstream file(path, std::ios::binary);
            if (!file) {
                std::cerr << "Error: Could not open file " << path << std::endl;
            }
    
            // Move to the end of the file to determine its size
            file.seekg(0, std::ios::end);
            std::streamsize size = file.tellg();
            file.seekg(0, std::ios::beg);
    
            std::vector<std::uint32_t> spirv(size / sizeof(std::uint32_t));
    
            // Read the data into the vector
            if (!file.read(reinterpret_cast<char*>(spirv.data()), size)) {
                std::cerr << "Error: Could not read data from file" << std::endl;
            }
    
            file.close();
    
            VkShaderModuleCreateInfo module_info{VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO};
            module_info.codeSize = spirv.size() * sizeof(uint32_t);
            module_info.pCode    = spirv.data();
        
            Device::CheckVkResult(vkCreateShaderModule(Device::device, &module_info, nullptr, &shader));
        }
    };
}

#endif