blob: fd47e0f3b721096f55b0a531f47e75233b3926ff (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
// 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_single_on_top.h"
#include <limits>
#include "cc/output/overlay_candidate_validator.h"
#include "cc/quads/draw_quad.h"
namespace cc {
OverlayStrategySingleOnTop::OverlayStrategySingleOnTop(
OverlayCandidateValidator* capability_checker)
: OverlayStrategyCommon(capability_checker) {
}
bool OverlayStrategySingleOnTop::TryOverlay(
OverlayCandidateValidator* capability_checker,
RenderPassList* render_passes_in_draw_order,
OverlayCandidateList* candidate_list,
const OverlayCandidate& candidate,
QuadList::Iterator candidate_iterator) {
RenderPass* root_render_pass = render_passes_in_draw_order->back();
QuadList& quad_list = root_render_pass->quad_list;
const DrawQuad* draw_quad = *candidate_iterator;
gfx::RectF rect = draw_quad->rect;
draw_quad->shared_quad_state->quad_to_target_transform.TransformRect(&rect);
// Check that no prior quads overlap it.
for (auto overlap_iter = quad_list.cbegin();
overlap_iter != candidate_iterator; ++overlap_iter) {
gfx::RectF overlap_rect = overlap_iter->rect;
overlap_iter->shared_quad_state->quad_to_target_transform.TransformRect(
&overlap_rect);
if (rect.Intersects(overlap_rect) && !IsInvisibleQuad(*overlap_iter))
return false;
}
// Add our primary surface.
OverlayCandidateList candidates;
OverlayCandidate main_image;
main_image.display_rect = root_render_pass->output_rect;
candidates.push_back(main_image);
// Add the overlay.
candidates.push_back(candidate);
candidates.back().plane_z_order = 1;
// Check for support.
capability_checker->CheckOverlaySupport(&candidates);
// If the candidate can be handled by an overlay, create a pass for it.
if (candidates[1].overlay_handled) {
quad_list.EraseAndInvalidateAllPointers(candidate_iterator);
candidate_list->swap(candidates);
return true;
}
return false;
}
} // namespace cc
|
