| // Copyright 2014 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_UNDERLAY_H_ |
| #define CC_OUTPUT_OVERLAY_STRATEGY_UNDERLAY_H_ |
| |
| #include "cc/output/overlay_strategy_common.h" |
| |
| namespace cc { |
| class StreamVideoDrawQuad; |
| class TextureDrawQuad; |
| |
| // The underlay strategy looks for a video quad without regard to quads above |
| // it. The video is "underlaid" through a black transparent quad substituted |
| // for the video quad. The overlay content can then be blended in by the |
| // hardware under the the scene. This is only valid for overlay contents that |
| // are fully opaque. |
| class CC_EXPORT OverlayStrategyUnderlay : public OverlayStrategyCommon { |
| public: |
| explicit OverlayStrategyUnderlay( |
| OverlayCandidateValidator* capability_checker); |
| bool TryOverlay(OverlayCandidateValidator* capability_checker, |
| RenderPassList* render_passes_in_draw_order, |
| OverlayCandidateList* candidate_list, |
| const OverlayCandidate& candidate, |
| QuadList::Iterator candidate_iterator) override; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(OverlayStrategyUnderlay); |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_OUTPUT_OVERLAY_STRATEGY_UNDERLAY_H_ |