cuda-samples/Samples/5_Domain_Specific/simpleVulkan/VulkanBaseApp.h

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#pragma once
#ifndef __VULKANBASEAPP_H__
#define __VULKANBASEAPP_H__

#include <string>
#include <vector>
#include <vulkan/vulkan.h>
#ifdef _WIN64
#define NOMINMAX
#include <windows.h>
#include <vulkan/vulkan_win32.h>
#endif /* _WIN64 */

/* remove _VK_TIMELINE_SEMAPHORE to use binary semaphores */
// use vulkan timeline semaphore
#define _VK_TIMELINE_SEMAPHORE

struct GLFWwindow;

class VulkanBaseApp {
 public:
  VulkanBaseApp(const std::string& appName, bool enableValidation = false);
  static VkExternalSemaphoreHandleTypeFlagBits getDefaultSemaphoreHandleType();
  static VkExternalMemoryHandleTypeFlagBits getDefaultMemHandleType();
  virtual ~VulkanBaseApp();
  void init();
  void* getMemHandle(VkDeviceMemory memory,
                     VkExternalMemoryHandleTypeFlagBits handleType);
  void* getSemaphoreHandle(VkSemaphore semaphore,
                           VkExternalSemaphoreHandleTypeFlagBits handleType);
  void createExternalSemaphore(
      VkSemaphore& semaphore, VkExternalSemaphoreHandleTypeFlagBits handleType);
  void createBuffer(VkDeviceSize size, VkBufferUsageFlags usage,
                    VkMemoryPropertyFlags properties, VkBuffer& buffer,
                    VkDeviceMemory& bufferMemory);
  void createExternalBuffer(VkDeviceSize size, VkBufferUsageFlags usage,
                            VkMemoryPropertyFlags properties,
                            VkExternalMemoryHandleTypeFlagsKHR extMemHandleType,
                            VkBuffer& buffer, VkDeviceMemory& bufferMemory);
  void importExternalBuffer(void* handle,
                            VkExternalMemoryHandleTypeFlagBits handleType,
                            size_t size, VkBufferUsageFlags usage,
                            VkMemoryPropertyFlags properties, VkBuffer& buffer,
                            VkDeviceMemory& memory);
  void copyBuffer(VkBuffer dst, VkBuffer src, VkDeviceSize size);
  VkCommandBuffer beginSingleTimeCommands();
  void endSingleTimeCommands(VkCommandBuffer commandBuffer);
  void mainLoop();

 protected:
  const std::string m_appName;
  const bool m_enableValidation;
  VkInstance m_instance;
  VkDebugUtilsMessengerEXT m_debugMessenger;
  VkSurfaceKHR m_surface;
  VkPhysicalDevice m_physicalDevice;
  VkDevice m_device;
  VkQueue m_graphicsQueue;
  VkQueue m_presentQueue;
  VkSwapchainKHR m_swapChain;
  std::vector<VkImage> m_swapChainImages;
  VkFormat m_swapChainFormat;
  VkExtent2D m_swapChainExtent;
  std::vector<VkImageView> m_swapChainImageViews;
  std::vector<std::pair<VkShaderStageFlagBits, std::string> > m_shaderFiles;
  VkRenderPass m_renderPass;
  VkPipelineLayout m_pipelineLayout;
  VkPipeline m_graphicsPipeline;
  std::vector<VkFramebuffer> m_swapChainFramebuffers;
  VkCommandPool m_commandPool;
  std::vector<VkCommandBuffer> m_commandBuffers;
  std::vector<VkSemaphore> m_imageAvailableSemaphores;
  std::vector<VkSemaphore> m_renderFinishedSemaphores;
  std::vector<VkFence> m_inFlightFences;
  std::vector<VkBuffer> m_uniformBuffers;
  std::vector<VkDeviceMemory> m_uniformMemory;
  VkSemaphore m_vkPresentationSemaphore;
  VkSemaphore m_vkTimelineSemaphore;
  VkDescriptorSetLayout m_descriptorSetLayout;
  VkDescriptorPool m_descriptorPool;
  std::vector<VkDescriptorSet> m_descriptorSets;
  VkImage m_depthImage;
  VkDeviceMemory m_depthImageMemory;
  VkImageView m_depthImageView;
  size_t m_currentFrame;
  bool m_framebufferResized;
  uint8_t m_vkDeviceUUID[VK_UUID_SIZE];

  virtual void initVulkanApp() {}
  virtual void fillRenderingCommandBuffer(VkCommandBuffer& buffer) {}
  virtual std::vector<const char*> getRequiredExtensions() const;
  virtual std::vector<const char*> getRequiredDeviceExtensions() const;
  virtual void getVertexDescriptions(
      std::vector<VkVertexInputBindingDescription>& bindingDesc,
      std::vector<VkVertexInputAttributeDescription>& attribDesc);
  virtual void getAssemblyStateInfo(
      VkPipelineInputAssemblyStateCreateInfo& info);
  virtual void getWaitFrameSemaphores(
      std::vector<VkSemaphore>& wait,
      std::vector<VkPipelineStageFlags>& waitStages) const;
  virtual void getSignalFrameSemaphores(std::vector<VkSemaphore>& signal) const;
  virtual VkDeviceSize getUniformSize() const;
  virtual void updateUniformBuffer(uint32_t imageIndex);
  virtual void drawFrame();

 private:
  GLFWwindow* m_window;

  void initWindow();
  void initVulkan();
  void createInstance();
  void createSurface();
  void createDevice();
  void createSwapChain();
  void createImageViews();
  void createRenderPass();
  void createDescriptorSetLayout();
  void createGraphicsPipeline();
  void createFramebuffers();
  void createCommandPool();
  void createDepthResources();
  void createUniformBuffers();
  void createDescriptorPool();
  void createDescriptorSets();
  void createCommandBuffers();
  void createSyncObjects();

  void cleanupSwapChain();
  void recreateSwapChain();

  bool isSuitableDevice(VkPhysicalDevice dev) const;
  static void resizeCallback(GLFWwindow* window, int width, int height);
};

void readFile(std::istream& s, std::vector<char>& data);

#endif /* __VULKANBASEAPP_H__ */