Shaders.hpp

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///
/// @file Shaders.hpp
/// @brief This file contains the Shader class
/// @namespace ven
///
 
#pragma once
 
#include <string>
 
#include <vulkan/vulkan.h>
#include <glm/glm.hpp>
 
#include "VEngine/Device.hpp"
#include "VEngine/Model.hpp"
 
namespace ven {
 
    struct PipelineConfigInfo {
        PipelineConfigInfo() = default;
        PipelineConfigInfo(const PipelineConfigInfo&) = delete;
        PipelineConfigInfo& operator=(const PipelineConfigInfo&) = delete;
 
        std::vector<VkVertexInputBindingDescription> bindingDescriptions;
        std::vector<VkVertexInputAttributeDescription> attributeDescriptions;
        VkPipelineInputAssemblyStateCreateInfo inputAssemblyInfo{};
        VkPipelineRasterizationStateCreateInfo rasterizationInfo{};
        VkPipelineMultisampleStateCreateInfo multisampleInfo{};
        VkPipelineColorBlendAttachmentState colorBlendAttachment{};
        VkPipelineColorBlendStateCreateInfo colorBlendInfo{};
        VkPipelineDepthStencilStateCreateInfo depthStencilInfo{};
        std::vector<VkDynamicState> dynamicStateEnables;
        VkPipelineDynamicStateCreateInfo dynamicStateInfo{};
        VkPipelineLayout pipelineLayout = nullptr;
        VkRenderPass renderPass = nullptr;
        uint32_t subpass = 0;
    };
 
    class Shaders {
 
        public:
 
            Shaders(Device &device, const std::string& vertFilepath, const std::string& fragFilepath, const PipelineConfigInfo& configInfo) : m_device{device} { createGraphicsPipeline(vertFilepath, fragFilepath, configInfo); };
            ~Shaders();
 
            Shaders(const Shaders&) = delete;
            Shaders& operator=(const Shaders&) = delete;
 
            static void defaultPipelineConfigInfo(PipelineConfigInfo& configInfo);
            void bind(const VkCommandBuffer commandBuffer) const { vkCmdBindPipeline(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, m_graphicsPipeline); }
 
        private:
 
            static std::vector<char> readFile(const std::string &filename);
            void createGraphicsPipeline(const std::string& vertFilepath, const std::string& fragFilepath, const PipelineConfigInfo& configInfo);
            void createShaderModule(const std::vector<char>& code, VkShaderModule* shaderModule) const;
 
            Device& m_device;
            VkPipeline m_graphicsPipeline{nullptr};
            VkShaderModule m_vertShaderModule{nullptr};
            VkShaderModule m_fragShaderModule{nullptr};
 
    }; // class Shaders
 
} // namespace ven