16 Presenting an image.cpp

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// Vulkan Cookbook
// ISBN: 9781786468154
// © Packt Publishing Limited
//
// Author:   Pawel Lapinski
// LinkedIn: https://www.linkedin.com/in/pawel-lapinski-84522329
//
// Chapter: 02 Image Presentation
// Recipe:  16 Presenting an image

#include "02 Image Presentation/16 Presenting an image.h"

namespace VulkanCookbook {

  bool PresentImage( VkQueue                  queue,
                     std::vector<VkSemaphore> rendering_semaphores,
                     std::vector<PresentInfo> images_to_present ) {
    VkResult result;
    std::vector<VkSwapchainKHR> swapchains;
    std::vector<uint32_t> image_indices;

    for( auto & image_to_present : images_to_present ) {
      swapchains.emplace_back( image_to_present.Swapchain );
      image_indices.emplace_back( image_to_present.ImageIndex );
    }

    VkPresentInfoKHR present_info = {
      VK_STRUCTURE_TYPE_PRESENT_INFO_KHR,                   // VkStructureType          sType
      nullptr,                                              // const void*              pNext
      static_cast<uint32_t>(rendering_semaphores.size()),   // uint32_t                 waitSemaphoreCount
      rendering_semaphores.data(),                          // const VkSemaphore      * pWaitSemaphores
      static_cast<uint32_t>(swapchains.size()),             // uint32_t                 swapchainCount
      swapchains.data(),                                    // const VkSwapchainKHR   * pSwapchains
      image_indices.data(),                                 // const uint32_t         * pImageIndices
      nullptr                                               // VkResult*                pResults
    };

    result = vkQueuePresentKHR( queue, &present_info );
    switch( result ) {
    case VK_SUCCESS:
      return true;
    default:
      return false;
    }
  }

} // namespace VulkanCookbook