kc3-lang/angle/src/libANGLE/renderer/vulkan/vk_mem_alloc_wrapper.h

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• Hash : 9a19a996
  Author :
  Date : 2020-08-26T09:00:50
  

  Vulkan: Use 4 MB as preferredLargeHeapBlockSize for allocator.
  
  This reduces preferredLargeHeapBlockSize from the default
  value of 256 MB to 4 MB, which reduces the initial block
  size from 32 MB to 512 KB.
  
  4 MB is the same size as used by Chromium and Skia. It seems
  to be a good compromise of not wasting unused allocated space
  and not making too many small allocations.
  
  This change is limited to non-Qualcomm GPUs as a number of
  tests are failing on Qualcomm after this change and the
  initial investigation indicates a potential driver bug. See
  http://anglebug.com/4995 for more details.
  
  Bug: chromium:1122718
  Bug: fuchsia:58959
  Change-Id: Ifdaf863ef38e72098a04ee57dec46ee71cab6ac3
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2376891
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Tim Van Patten <timvp@google.com>
  Commit-Queue: David Reveman <reveman@chromium.org>
  

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• src/libANGLE/renderer/vulkan/vk_mem_alloc_wrapper.h

• //
  // Copyright 2020 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // vma_allocator_wrapper.h:
  //    Hides VMA functions so we can use separate warning sets.
  //
  
  #ifndef LIBANGLE_RENDERER_VULKAN_VK_MEM_ALLOC_WRAPPER_H_
  #define LIBANGLE_RENDERER_VULKAN_VK_MEM_ALLOC_WRAPPER_H_
  
  #include "common/vulkan/vk_headers.h"
  
  VK_DEFINE_HANDLE(VmaAllocator)
  VK_DEFINE_HANDLE(VmaAllocation)
  
  namespace vma
  {
  VkResult InitAllocator(VkPhysicalDevice physicalDevice,
                         VkDevice device,
                         VkInstance instance,
                         uint32_t apiVersion,
                         VkDeviceSize preferredLargeHeapBlockSize,
                         VmaAllocator *pAllocator);
  
  void DestroyAllocator(VmaAllocator allocator);
  
  void FreeMemory(VmaAllocator allocator, VmaAllocation allocation);
  
  VkResult CreateBuffer(VmaAllocator allocator,
                        const VkBufferCreateInfo *pBufferCreateInfo,
                        VkMemoryPropertyFlags requiredFlags,
                        VkMemoryPropertyFlags preferredFlags,
                        bool persistentlyMappedBuffers,
                        uint32_t *pMemoryTypeIndexOut,
                        VkBuffer *pBuffer,
                        VmaAllocation *pAllocation);
  
  VkResult FindMemoryTypeIndexForBufferInfo(VmaAllocator allocator,
                                            const VkBufferCreateInfo *pBufferCreateInfo,
                                            VkMemoryPropertyFlags requiredFlags,
                                            VkMemoryPropertyFlags preferredFlags,
                                            bool persistentlyMappedBuffers,
                                            uint32_t *pMemoryTypeIndexOut);
  
  void GetMemoryTypeProperties(VmaAllocator allocator,
                               uint32_t memoryTypeIndex,
                               VkMemoryPropertyFlags *pFlags);
  
  VkResult MapMemory(VmaAllocator allocator, VmaAllocation allocation, void **ppData);
  
  void UnmapMemory(VmaAllocator allocator, VmaAllocation allocation);
  
  void FlushAllocation(VmaAllocator allocator,
                       VmaAllocation allocation,
                       VkDeviceSize offset,
                       VkDeviceSize size);
  
  void InvalidateAllocation(VmaAllocator allocator,
                            VmaAllocation allocation,
                            VkDeviceSize offset,
                            VkDeviceSize size);
  
  }  // namespace vma
  
  #endif  // LIBANGLE_RENDERER_VULKAN_VK_MEM_ALLOC_WRAPPER_H_
  

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