| // 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. |
| |
| #include "cc/output/overlay_strategy_underlay.h" |
| |
| #include "cc/output/overlay_candidate_validator.h" |
| #include "cc/quads/draw_quad.h" |
| #include "cc/quads/solid_color_draw_quad.h" |
| |
| namespace cc { |
| |
| OverlayStrategyUnderlay::OverlayStrategyUnderlay( |
| OverlayCandidateValidator* capability_checker) |
| : capability_checker_(capability_checker) { |
| DCHECK(capability_checker); |
| } |
| |
| OverlayStrategyUnderlay::~OverlayStrategyUnderlay() {} |
| |
| bool OverlayStrategyUnderlay::Attempt(ResourceProvider* resource_provider, |
| RenderPassList* render_passes, |
| OverlayCandidateList* candidate_list, |
| gfx::Rect* damage_rect) { |
| QuadList& quad_list = render_passes->back()->quad_list; |
| for (auto it = quad_list.begin(); it != quad_list.end(); ++it) { |
| OverlayCandidate candidate; |
| if (!OverlayCandidate::FromDrawQuad(resource_provider, *it, &candidate)) |
| continue; |
| |
| // Add the overlay. |
| OverlayCandidateList new_candidate_list = *candidate_list; |
| new_candidate_list.push_back(candidate); |
| new_candidate_list.back().plane_z_order = -1; |
| |
| // Check for support. |
| capability_checker_->CheckOverlaySupport(&new_candidate_list); |
| |
| // If the candidate can be handled by an overlay, create a pass for it. We |
| // need to switch out the video quad with a black transparent one. |
| if (new_candidate_list.back().overlay_handled) { |
| const SharedQuadState* shared_quad_state = it->shared_quad_state; |
| gfx::Rect rect = it->visible_rect; |
| SolidColorDrawQuad* replacement = |
| quad_list.ReplaceExistingElement<SolidColorDrawQuad>(it); |
| replacement->SetAll(shared_quad_state, rect, rect, rect, false, |
| SK_ColorTRANSPARENT, true); |
| candidate_list->swap(new_candidate_list); |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| } // namespace cc |