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
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_OZONE_PLATFORM_FLATLAND_FLATLAND_SURFACE_CANVAS_H_
#define UI_OZONE_PLATFORM_FLATLAND_FLATLAND_SURFACE_CANVAS_H_
#include "base/memory/raw_ptr.h"
#include "base/memory/shared_memory_mapping.h"
#include "base/memory/weak_ptr.h"
#include "base/threading/thread_checker.h"
#include "third_party/skia/include/core/SkRegion.h"
#include "third_party/skia/include/core/SkSurface.h"
#include "ui/gfx/geometry/size.h"
#include "ui/ozone/platform/flatland/flatland_connection.h"
#include "ui/ozone/public/surface_ozone_canvas.h"
namespace mojo {
class PlatformHandle;
}
namespace ui {
// SurfaceOzoneCanvas implementation for FlatlandWindow.
class FlatlandSurfaceCanvas : public SurfaceOzoneCanvas {
public:
FlatlandSurfaceCanvas(
fuchsia::sysmem2::Allocator_Sync* sysmem_allocator,
fuchsia::ui::composition::Allocator* flatland_allocator);
FlatlandSurfaceCanvas(const FlatlandSurfaceCanvas&) = delete;
FlatlandSurfaceCanvas& operator=(const FlatlandSurfaceCanvas&) = delete;
~FlatlandSurfaceCanvas() override;
mojo::PlatformHandle CreateView();
// SurfaceOzoneCanvas implementation.
void ResizeCanvas(const gfx::Size& viewport_size, float scale) override;
SkCanvas* GetCanvas() override;
void PresentCanvas(const gfx::Rect& damage) override;
std::unique_ptr<gfx::VSyncProvider> CreateVSyncProvider() override;
private:
// Use 3 buffers for optimal performance. One for the current visible frame,
// one for the next frame to be displayed, one to render the following frame.
static const size_t kNumBuffers = 3;
struct Frame {
Frame();
~Frame();
// Sets the `vmo` to use for this frame.
void InitializeBuffer(fuchsia::sysmem2::VmoBuffer vmo,
gfx::Size size,
size_t stride);
// Reset the state and release the buffer.
void Reset();
// Copies pixels covered by |dirty_region| from another |frame|.
void CopyDirtyRegionFrom(const Frame& frame);
bool is_empty() { return !surface; }
// Shared memory for the buffer.
base::WritableSharedMemoryMapping memory_mapping;
// SkSurface that wraps |memory_mapping|.
sk_sp<SkSurface> surface;
fuchsia::ui::composition::ContentId image_id = {};
// Fence that will be released by Scenic when it stops using this frame.
zx::event release_fence;
// The region of the frame that's not up-to-date.
SkRegion dirty_region;
};
class VSyncProviderImpl;
void FinalizeBufferAllocation();
void OnFramePresented(base::TimeTicks actual_presentation_time,
base::TimeDelta future_presentation_interval);
void OnFlatlandError(fuchsia::ui::composition::FlatlandError error);
const raw_ptr<fuchsia::sysmem2::Allocator_Sync> sysmem_allocator_;
const raw_ptr<fuchsia::ui::composition::Allocator> flatland_allocator_;
FlatlandConnection flatland_;
Frame frames_[kNumBuffers];
// Buffer index in |frames_| for the frame that's currently being rendered.
size_t current_frame_ = 0;
// View size in device pixels.
gfx::Size viewport_size_;
fuchsia::ui::composition::ParentViewportWatcherPtr parent_viewport_watcher_;
fuchsia::ui::composition::TransformId root_transform_id_;
// Pending buffer collection for the buffers.
fuchsia::sysmem2::BufferCollectionSyncPtr buffer_collection_;
fuchsia::ui::composition::BufferCollectionImportToken import_token_;
base::WeakPtr<VSyncProviderImpl> vsync_provider_;
THREAD_CHECKER(thread_checker_);
};
} // namespace ui
#endif // UI_OZONE_PLATFORM_FLATLAND_FLATLAND_SURFACE_CANVAS_H_
|
