.. _program_listing_file_Src_GraphicsEngineVulkan_common_MemoryHelper.hpp:

Program Listing for File MemoryHelper.hpp
=========================================

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

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

.. code-block:: cpp

   #pragma once
   #include <vulkan/vulkan.h>
   
   namespace Kataglyphis {
   // aligned piece of memory appropiately and when necessary return bigger piece
   static uint32_t align_up(uint32_t memory, uint32_t alignment) { return (memory + alignment - 1) & ~(alignment - 1); }
   
   static uint32_t
     find_memory_type_index(VkPhysicalDevice physical_device, uint32_t allowed_types, VkMemoryPropertyFlags properties)
   {
       // get properties of physical device memory
       VkPhysicalDeviceMemoryProperties memory_properties{};
       vkGetPhysicalDeviceMemoryProperties(physical_device, &memory_properties);
   
       for (uint32_t i = 0; i < memory_properties.memoryTypeCount; i++) {
           if ((allowed_types & (1 << i))
               // index of memory type must match corresponding bit in allowedTypes
               // desired property bit flags are part of memory type's property flags
               && (memory_properties.memoryTypes[i].propertyFlags & properties) == properties) {
               // this memory type is valid, so return its index
               return i;
           }
       }
   
       return -1;
   }
   }// namespace Kataglyphis