// VulkanTutorial.h: 标准系统包含文件的包含文件
// 或项目特定的包含文件。

#pragma once


#define GLFW_INCLUDE_VULKAN
#include<GLFW/glfw3.h>

#include<vulkan/vulkan.h>
#include<glm/glm.hpp>
#include <iostream>
#include <optional>
#include <stdexcept>
#include <functional>
#include <cstdlib>
#include <set>

#include <cstdint>
#include <limits>
#include <algorithm>
#include <array>

#include <fstream>


VkResult CreateDebugUtilsMessengerEXT(VkInstance instance, const VkDebugUtilsMessengerCreateInfoEXT* pCreateInfo,const VkAllocationCallbacks* pAllocator,VkDebugUtilsMessengerEXT* pDebugMessenger);

void DestroyDebugUtilsMessengerEXT(VkInstance instance,VkDebugUtilsMessengerEXT debugMessenger,const VkAllocationCallbacks* pAllocator);

class HelloTriangleApplication
{
public:
	
	const int MAX_FRAME_IN_FLIGHT = 2;

	HelloTriangleApplication();
	~HelloTriangleApplication();
	void run(int Width, int Height) {
		initWindow(Width,Height);
		initVulkan();
		mainLoop(window);
		cleanup(window);
	}
private:

	GLFWwindow* window;

	VkInstance instance;

	VkDebugUtilsMessengerEXT debugMessenger;

	VkPhysicalDevice physicalDevice = VK_NULL_HANDLE;

	VkDevice device;


	VkQueue graphicQueue;
	VkQueue presentQueue;

	VkSurfaceKHR surface;

	VkSwapchainKHR swapChain;
	std::vector<VkImage> swapChainImages;
	VkFormat swapChainImageFormat;
	VkExtent2D swapChainExtent;

	std::vector<VkImageView> swapChainImageViews;

	VkRenderPass renderPass;
	VkPipelineLayout pipelineLayout;

	VkPipeline graphicsPipeline;

	

	struct QueueFamilyIndices
	{
		std::optional<uint32_t> graphicsFamily;
		std::optional<uint32_t> presentFamily;

		bool isComplete() {
			return graphicsFamily.has_value() && presentFamily.has_value();
		}
	};

	struct SwapChainSupportDetails
	{
		VkSurfaceCapabilitiesKHR capabilities;
		std::vector<VkSurfaceFormatKHR> formats;
		std::vector<VkPresentModeKHR> presentModes;
	};

	std::vector<VkFramebuffer> swapChainFramebuffers;

	VkCommandPool commandPool;
	
	std::vector<VkCommandBuffer> commandBuffers;

	std::vector<VkSemaphore> imageAvailableSemaphores;
	std::vector<VkSemaphore> renderFinishedSemaphores;
	std::vector<VkFence> inFlightFences;

	bool framebufferResized = false;

	struct Vertex
	{
		glm::vec2 pos;
		glm::vec3 color;
		static VkVertexInputBindingDescription getBindingDescription();
		static std::array<VkVertexInputAttributeDescription, 2> getAttributeDescriptions();
	};

	const std::vector<Vertex> vertices = {
	{{0.0f, -0.5f}, {1.0f, 1.0f, 1.0f}},
	{{0.5f, 0.5f}, {0.0f, 1.0f, 0.0f}},
	{{-0.5f, 0.5f}, {0.0f, 0.0f, 1.0f}}
	};

	VkBuffer vertexBuffer;
	VkDeviceMemory vertexBufferMemory;

	void initWindow(int Width, int Height);

	void createInstance();

	void initVulkan();

	void mainLoop(GLFWwindow* window);

	void cleanup(GLFWwindow* window);

	bool checkValidationLayerSupport();

	std::vector<const char*> getRequiredExtensions();

	void showAvailableExtension();

	static VKAPI_ATTR VkBool32 VKAPI_CALL debugCallback(
		VkDebugUtilsMessageSeverityFlagBitsEXT messageSeverity,
		VkDebugUtilsMessageTypeFlagsEXT messageTypes,
		const VkDebugUtilsMessengerCallbackDataEXT* pCallbackData,
		void* pUserData);

	void setupDebugMessenger();
	void populateDebugMessengerCreateInfo(VkDebugUtilsMessengerCreateInfoEXT& createInfo);

	void createSurface();

	bool checkDeviceExtensionSupport(VkPhysicalDevice device);

	void pickPhysicalDevice();
	bool isDeviceSuitable(VkPhysicalDevice device);

	QueueFamilyIndices findQueueFamilies(VkPhysicalDevice device);

	void createLogicalDevice();

	SwapChainSupportDetails querySwapChainSupport(VkPhysicalDevice device);

	VkSurfaceFormatKHR chooseSwapSurfaceFormat(const std::vector<VkSurfaceFormatKHR>& availableFormats);
	VkPresentModeKHR chooseSwapPresentMode(const std::vector<VkPresentModeKHR>& availablePresentModes);
	VkExtent2D chooseSwapExtent(const VkSurfaceCapabilitiesKHR& capabilities);
	void createSwapChain();
	void cleanupSwapChain();
	void recreateSwapChain();

	void createImageView();

	void createRenderPass();
	void createGraphicPipeline();

	static std::vector<char> readFile(const std::string& filename);

	VkShaderModule createShaderModule(const std::vector<char> code);

	void creatFramebuffers();

	void createCommandPool();

	void createVertexBuffer();

	uint32_t findMemoryType(uint32_t typeFilter, VkMemoryPropertyFlags properties);

	void createCommandBuffer();

	void recordCommandBuffer(VkCommandBuffer commandBuffer, uint32_t imageIndex);

	void drawFrame();

	void createSyncObjects();

	static void framebufferResizeCallback(GLFWwindow* window, int width, int height);

};

HelloTriangleApplication::HelloTriangleApplication()
{
}

HelloTriangleApplication::~HelloTriangleApplication()
{
}