.. _program_listing_file_Src_GraphicsEngineVulkan_common_ExtensionSupport.hpp:

Program Listing for File ExtensionSupport.hpp
=============================================

|exhale_lsh| :ref:`Return to documentation for file <file_Src_GraphicsEngineVulkan_common_ExtensionSupport.hpp>` (``Src/GraphicsEngineVulkan/common/ExtensionSupport.hpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   #pragma once
   
   #include <span>
   #include <string_view>
   #include <vulkan/vulkan.hpp>
   
   namespace Kataglyphis {
   
   [[nodiscard]] inline bool supportsExtension(std::span<const vk::ExtensionProperties> available, std::string_view name)
   {
       for (const auto &extension : available) {
           if (std::string_view(extension.extensionName.data()) == name) { return true; }
       }
       return false;
   }
   
   [[nodiscard]] inline bool supportsLayer(std::span<const vk::LayerProperties> available, std::string_view name)
   {
       for (const auto &layer : available) {
           if (std::string_view(layer.layerName.data()) == name) { return true; }
       }
       return false;
   }
   
   // nullptr when every required name is present; otherwise the first missing one.
   [[nodiscard]] inline const char *firstMissingExtension(std::span<const vk::ExtensionProperties> available,
     std::span<const char *const> required)
   {
       for (const char *name : required) {
           if (!supportsExtension(available, name)) { return name; }
       }
       return nullptr;
   }
   
   }// namespace Kataglyphis