blob: 8f3704cd67cf63ad42a054990ff8660526aca2bb (
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
65
66
67
68
69
70
71
|
// 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_PROCESSOR_H_
#define CC_OUTPUT_OVERLAY_PROCESSOR_H_
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "cc/base/cc_export.h"
#include "cc/output/ca_layer_overlay.h"
#include "cc/output/overlay_candidate.h"
#include "cc/quads/render_pass.h"
namespace cc {
class OutputSurface;
class ResourceProvider;
class CC_EXPORT OverlayProcessor {
public:
class CC_EXPORT Strategy {
public:
virtual ~Strategy() {}
// Returns false if the strategy cannot be made to work with the
// current set of render passes. Returns true if the strategy was successful
// and adds any additional passes necessary to represent overlays to
// |render_passes|.
virtual bool Attempt(ResourceProvider* resource_provider,
RenderPassList* render_passes,
OverlayCandidateList* candidates) = 0;
};
using StrategyList = std::vector<scoped_ptr<Strategy>>;
explicit OverlayProcessor(OutputSurface* surface);
virtual ~OverlayProcessor();
// Virtual to allow testing different strategies.
virtual void Initialize();
gfx::Rect GetAndResetOverlayDamage();
void ProcessForOverlays(ResourceProvider* resource_provider,
RenderPassList* render_passes,
OverlayCandidateList* overlay_candidates,
CALayerOverlayList* ca_layer_overlays,
gfx::Rect* damage_rect);
// Notify the processor that ProcessForOverlays is being skipped this frame.
void SkipProcessForOverlays();
protected:
StrategyList strategies_;
OutputSurface* surface_;
gfx::Rect overlay_damage_rect_;
gfx::Rect previous_frame_underlay_rect_;
private:
bool ProcessForCALayers(ResourceProvider* resource_provider,
RenderPassList* render_passes,
OverlayCandidateList* overlay_candidates,
CALayerOverlayList* ca_layer_overlays,
gfx::Rect* damage_rect);
// Update |damage_rect| by removing damage casued by |candidates|.
void UpdateDamageRect(OverlayCandidateList* candidates,
gfx::Rect* damage_rect);
DISALLOW_COPY_AND_ASSIGN(OverlayProcessor);
};
} // namespace cc
#endif // CC_OUTPUT_OVERLAY_PROCESSOR_H_
|
