content/common/gpu/null_transport_surface.h

   1 // Copyright (c) 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_COMMON_GPU_NULL_TRANSPORT_SURFACE_H_
   6 #define CONTENT_COMMON_GPU_NULL_TRANSPORT_SURFACE_H_
   7
   8 #include "base/basictypes.h"
   9 #include "content/common/gpu/image_transport_surface.h"
  10 #include "ui/gfx/native_widget_types.h"
  11
  12 namespace content {
  13
  14 // Used when the GPU process is not involved in frame transport, but frame
  15 // resources are exchanged between client and target directly (such as in
  16 // delegated rendering).
  17 class NullTransportSurface : public PassThroughImageTransportSurface {
  18  public:
  19   NullTransportSurface(GpuChannelManager* manager,
  20                        GpuCommandBufferStub* stub,
  21                        const gfx::GLSurfaceHandle& handle);
  22
  23   // gfx::GLSurfaceAdapter implementation.
  24   bool Initialize() override;
  25   void Destroy() override;
  26   gfx::SwapResult SwapBuffers() override;
  27   gfx::SwapResult PostSubBuffer(int x, int y, int width, int height) override;
  28   bool OnMakeCurrent(gfx::GLContext* context) override;
  29
  30  protected:
  31   ~NullTransportSurface() override;
  32
  33   void SendVSyncUpdateIfAvailable() override;
  34
  35  private:
  36   uint32 parent_client_id_;
  37
  38   DISALLOW_COPY_AND_ASSIGN(NullTransportSurface);
  39 };
  40
  41 }  // namespace content
  42
  43 #endif  // CONTENT_COMMON_GPU_NULL_TRANSPORT_SURFACE_H_