gpu/command_buffer/service/shared_image_representation_dawn_ozone.h

// Copyright 2019 The Chromium 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 GPU_COMMAND_BUFFER_SERVICE_SHARED_IMAGE_REPRESENTATION_DAWN_OZONE_H_
#define GPU_COMMAND_BUFFER_SERVICE_SHARED_IMAGE_REPRESENTATION_DAWN_OZONE_H_

#include <dawn/dawn_proc_table.h>
#include <dawn/webgpu.h>

#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_refptr.h"
#include "gpu/command_buffer/service/shared_image_backing.h"
#include "gpu/command_buffer/service/shared_image_backing_ozone.h"
#include "gpu/command_buffer/service/shared_image_manager.h"
#include "gpu/command_buffer/service/shared_image_representation.h"
#include "ui/gfx/native_pixmap.h"

namespace gpu {

// SharedImageRepresentation of a Ozone-backed SharedImage to be used by Dawn.
// On access, the pixmap backing the SharedImage is imported into Dawn for
// rendering.
class SharedImageRepresentationDawnOzone
    : public SharedImageRepresentationDawn {
 public:
  SharedImageRepresentationDawnOzone(
      SharedImageManager* manager,
      SharedImageBacking* backing,
      MemoryTypeTracker* tracker,
      WGPUDevice device,
      WGPUTextureFormat format,
      scoped_refptr<gfx::NativePixmap> pixmap,
      scoped_refptr<base::RefCountedData<DawnProcTable>> dawn_procs);

  ~SharedImageRepresentationDawnOzone() override;

  WGPUTexture BeginAccess(WGPUTextureUsage usage) override;

  void EndAccess() override;

 private:
  // TODO(andrescj): move other shared image representations into
  // SharedImageBackingOzone.
  SharedImageBackingOzone* ozone_backing() {
    return static_cast<SharedImageBackingOzone*>(backing());
  }
  const WGPUDevice device_;
  const WGPUTextureFormat format_;
  scoped_refptr<gfx::NativePixmap> pixmap_;
  WGPUTexture texture_ = nullptr;
  scoped_refptr<base::RefCountedData<DawnProcTable>> dawn_procs_;

  DISALLOW_COPY_AND_ASSIGN(SharedImageRepresentationDawnOzone);
};

}  // namespace gpu

#endif  // GPU_COMMAND_BUFFER_SERVICE_SHARED_IMAGE_REPRESENTATION_DAWN_OZONE_H_