cc/output/overlay_strategy_all_or_nothing.h

// Copyright 2015 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 CC_OUTPUT_OVERLAY_STRATEGY_ALL_OR_NOTHING_H_
#define CC_OUTPUT_OVERLAY_STRATEGY_ALL_OR_NOTHING_H_

#include "cc/output/overlay_processor.h"

namespace cc {

class OverlayCandidateValidator;

// This strategy attempts to promote all quads into overlays.
// If any quad can't be promoted, it returns false and no quads are promoted.
class CC_EXPORT OverlayStrategyAllOrNothing
    : public OverlayProcessor::Strategy {
 public:
  explicit OverlayStrategyAllOrNothing(
      OverlayCandidateValidator* capability_checker);
  ~OverlayStrategyAllOrNothing() override;

  bool Attempt(ResourceProvider* resource_provider,
               RenderPassList* render_passes,
               OverlayCandidateList* candidate_list,
               gfx::Rect* damage_rect) override;

 private:
  OverlayCandidateValidator* capability_checker_;  // Weak.

  DISALLOW_COPY_AND_ASSIGN(OverlayStrategyAllOrNothing);
};

}  // namespace cc

#endif  // CC_OUTPUT_OVERLAY_STRATEGY_ALL_OR_NOTHING_H_