cc/output/overlay_strategy_sandwich.h

   1 // Copyright 2015 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 CC_OUTPUT_OVERLAY_STRATEGY_SANDWICH_H_
   6 #define CC_OUTPUT_OVERLAY_STRATEGY_SANDWICH_H_
   7
   8 #include "cc/output/overlay_strategy_common.h"
   9
  10 namespace cc {
  11
  12 // The sandwich strategy looks for a video quad without regard to quads above
  13 // it. The video is "overlaid" on top of the scene, and then the non-empty
  14 // parts of the scene are "overlaid" on top of the video. This is only valid
  15 // for overlay contents that are fully opaque.
  16 class CC_EXPORT OverlayStrategySandwich : public OverlayStrategyCommonDelegate {
  17  public:
  18   OverlayStrategySandwich() {}
  19   ~OverlayStrategySandwich() override;
  20
  21   bool TryOverlay(OverlayCandidateValidator* capability_checker,
  22                   RenderPassList* render_passes_in_draw_order,
  23                   OverlayCandidateList* candidate_list,
  24                   const OverlayCandidate& candidate,
  25                   QuadList::Iterator candidate_iterator,
  26                   float device_scale_factor) override;
  27
  28  private:
  29   DISALLOW_COPY_AND_ASSIGN(OverlayStrategySandwich);
  30 };
  31
  32 }  // namespace cc
  33
  34 #endif  // CC_OUTPUT_OVERLAY_STRATEGY_SANDWICH_H_