11 Creating a descriptor pool.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: 05 Descriptor Sets
// Recipe:  11 Creating a descriptor pool

#include "05 Descriptor Sets/11 Creating a descriptor pool.h"

namespace VulkanCookbook {

  bool CreateDescriptorPool( VkDevice                                  logical_device,
                             bool                                      free_individual_sets,
                             uint32_t                                  max_sets_count,
                             std::vector<VkDescriptorPoolSize> const & descriptor_types,
                             VkDescriptorPool                        & descriptor_pool ) {
    VkDescriptorPoolCreateInfo descriptor_pool_create_info = {
      VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO,                // VkStructureType                sType
      nullptr,                                                      // const void                   * pNext
      free_individual_sets ?                                        // VkDescriptorPoolCreateFlags    flags
        VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT : 0u,
      max_sets_count,                                               // uint32_t                       maxSets
      static_cast<uint32_t>(descriptor_types.size()),               // uint32_t                       poolSizeCount
      descriptor_types.data()                                       // const VkDescriptorPoolSize   * pPoolSizes
    };

    VkResult result = vkCreateDescriptorPool( logical_device, &descriptor_pool_create_info, nullptr, &descriptor_pool );
    if( VK_SUCCESS != result ) {
      std::cout << "Could not create a descriptor pool." << std::endl;
      return false;
    }
    return true;
  }

} // namespace VulkanCookbook