09 Loading instance-level functions.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: 01 Instance and Devices
// Recipe:  09 Loading instance-level functions

#include "01 Instance and Devices/09 Loading instance-level functions.h"

namespace VulkanCookbook {

  bool LoadInstanceLevelFunctions( VkInstance                        instance,
                                   std::vector<char const *> const & enabled_extensions ) {
    // Load core Vulkan API instance-level functions
#define INSTANCE_LEVEL_VULKAN_FUNCTION( name )                                  \
    name = (PFN_##name)vkGetInstanceProcAddr( instance, #name );                \
    if( name == nullptr ) {                                                     \
      std::cout << "Could not load instance-level Vulkan function named: "      \
        #name << std::endl;                                                     \
      return false;                                                             \
    }

    // Load instance-level functions from enabled extensions
#define INSTANCE_LEVEL_VULKAN_FUNCTION_FROM_EXTENSION( name, extension )        \
    for( auto & enabled_extension : enabled_extensions ) {                      \
      if( std::string( enabled_extension ) == std::string( extension ) ) {      \
        name = (PFN_##name)vkGetInstanceProcAddr( instance, #name );            \
        if( name == nullptr ) {                                                 \
          std::cout << "Could not load instance-level Vulkan function named: "  \
            #name << std::endl;                                                 \
          return false;                                                         \
        }                                                                       \
      }                                                                         \
    }

#include "ListOfVulkanFunctions.inl"

    return true;
  }

} // namespace VulkanCookbook