.. _program_listing_file_Src_GraphicsEngineVulkan_renderer_CommandBufferManager.cpp:

Program Listing for File CommandBufferManager.cpp
=================================================

|exhale_lsh| :ref:`Return to documentation for file <file_Src_GraphicsEngineVulkan_renderer_CommandBufferManager.cpp>` (``Src/GraphicsEngineVulkan/renderer/CommandBufferManager.cpp``)

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

.. code-block:: cpp

   #include "renderer/CommandBufferManager.hpp"
   
   #include "common/Utilities.hpp"
   
   Kataglyphis::VulkanRendererInternals::CommandBufferManager::CommandBufferManager() {}
   
   VkCommandBuffer Kataglyphis::VulkanRendererInternals::CommandBufferManager::beginCommandBuffer(VkDevice device,
     VkCommandPool command_pool)
   {
       // command buffer to hold transfer commands
       VkCommandBuffer command_buffer;
   
       // command buffer details
       VkCommandBufferAllocateInfo alloc_info{};
       alloc_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
       alloc_info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
       alloc_info.commandPool = command_pool;
       alloc_info.commandBufferCount = 1;
   
       // allocate command buffer from pool
       vkAllocateCommandBuffers(device, &alloc_info, &command_buffer);
   
       // infromation to begin the command buffer record
       VkCommandBufferBeginInfo begin_info{};
       begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
       // we are only using the command buffer once, so set up for one time submit
       begin_info.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
   
       // begin recording transfer commands
       vkBeginCommandBuffer(command_buffer, &begin_info);
   
       return command_buffer;
   }
   
   void Kataglyphis::VulkanRendererInternals::CommandBufferManager::endAndSubmitCommandBuffer(VkDevice device,
     VkCommandPool command_pool,
     VkQueue queue,
     VkCommandBuffer &command_buffer)
   {
       // end commands
       VkResult result = vkEndCommandBuffer(command_buffer);
       ASSERT_VULKAN(result, "Failed to end command buffer!")
   
       // queue submission information
       VkSubmitInfo submit_info{};
       submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
       submit_info.commandBufferCount = 1;
       submit_info.pCommandBuffers = &command_buffer;
   
       // submit transfer command to transfer queue and wait until it finishes
       result = vkQueueSubmit(queue, 1, &submit_info, VK_NULL_HANDLE);
       ASSERT_VULKAN(result, "Failed to submit to queue!")
   
       result = vkQueueWaitIdle(queue);
       ASSERT_VULKAN(result, "Failed to wait Idle!")
   
       // free temporary command buffer back to pool
       vkFreeCommandBuffers(device, command_pool, 1, &command_buffer);
   }
   
   Kataglyphis::VulkanRendererInternals::CommandBufferManager::~CommandBufferManager() {}