flutter_skia_vma.h

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#ifndef FLUTTER_FLUTTER_VMA_FLUTTER_SKIA_VMA_H_
#define FLUTTER_FLUTTER_VMA_FLUTTER_SKIA_VMA_H_
 
#include "flutter/flutter_vma/flutter_vma.h"
 
#include "flutter/fml/memory/ref_ptr.h"
#include "flutter/vulkan/procs/vulkan_proc_table.h"
#include "third_party/skia/include/gpu/vk/GrVkBackendContext.h"
 
namespace flutter {
 
class FlutterSkiaVulkanMemoryAllocator : public skgpu::VulkanMemoryAllocator {
 public:
  static sk_sp<VulkanMemoryAllocator> Make(
      uint32_t vulkan_api_version,
      VkInstance instance,
      VkPhysicalDevice physicalDevice,
      VkDevice device,
      const fml::RefPtr<vulkan::VulkanProcTable>& vk,
      bool mustUseCoherentHostVisibleMemory);
 
  ~FlutterSkiaVulkanMemoryAllocator() override;
 
  VkResult allocateImageMemory(VkImage image,
                               uint32_t allocationPropertyFlags,
                               skgpu::VulkanBackendMemory*) override;
 
  VkResult allocateBufferMemory(VkBuffer buffer,
                                BufferUsage usage,
                                uint32_t allocationPropertyFlags,
                                skgpu::VulkanBackendMemory*) override;
 
  void freeMemory(const skgpu::VulkanBackendMemory&) override;
 
  void getAllocInfo(const skgpu::VulkanBackendMemory&,
                    skgpu::VulkanAlloc*) const override;
 
  VkResult mapMemory(const skgpu::VulkanBackendMemory&, void** data) override;
  void unmapMemory(const skgpu::VulkanBackendMemory&) override;
 
  VkResult flushMemory(const skgpu::VulkanBackendMemory&,
                       VkDeviceSize offset,
                       VkDeviceSize size) override;
  VkResult invalidateMemory(const skgpu::VulkanBackendMemory&,
                            VkDeviceSize offset,
                            VkDeviceSize size) override;
 
  std::pair<uint64_t, uint64_t> totalAllocatedAndUsedMemory() const override;
 
 private:
  FlutterSkiaVulkanMemoryAllocator(
      fml::RefPtr<vulkan::VulkanProcTable> vk_proc_table,
      VmaAllocator allocator,
      bool mustUseCoherentHostVisibleMemory);
 
  fml::RefPtr<vulkan::VulkanProcTable> vk_proc_table_;
  VmaAllocator allocator_;
 
  // For host visible allocations do we require they are coherent or not. All
  // devices are required to support a host visible and coherent memory type.
  // This is used to work around bugs for devices that don't handle non coherent
  // memory correctly.
  bool must_use_coherent_host_visible_memory_;
};
 
}  // namespace flutter
 
#endif  // FLUTTER_FLUTTER_VMA_FLUTTER_SKIA_VMA_H_