.. _program_listing_file_Src_GraphicsEngineVulkan_renderer_accelerationStructures_BlasCompaction.hpp:

Program Listing for File BlasCompaction.hpp
===========================================

|exhale_lsh| :ref:`Return to documentation for file <file_Src_GraphicsEngineVulkan_renderer_accelerationStructures_BlasCompaction.hpp>` (``Src/GraphicsEngineVulkan/renderer/accelerationStructures/BlasCompaction.hpp``)

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

.. code-block:: cpp

   #pragma once
   
   #include <cstdint>
   #include <span>
   #include <vulkan/vulkan.hpp>
   
   namespace Kataglyphis {
   
   // VkBufferCreateInfo::size must be greater than zero
   // (VUID-VkBufferCreateInfo-size-00912), so a driver reporting an empty
   // result set, or a 0-byte compacted size for any entry, cannot be honoured -
   // the caller must keep the uncompacted BLAS instead.
   [[nodiscard]] inline auto compactedSizesAreUsable(std::span<const vk::DeviceSize> sizes) -> bool
   {
       if (sizes.empty()) { return false; }
       for (vk::DeviceSize const size : sizes) {
           if (size == 0) { return false; }
       }
       return true;
   }
   
   }// namespace Kataglyphis