software_output_device_ozone.cc revision e5d81f57cb97b3b6b7fccc9c5610d21eb81db09d 
1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "content/browser/compositor/software_output_device_ozone.h"
6#include "third_party/skia/include/core/SkDevice.h"
7#include "ui/compositor/compositor.h"
8#include "ui/gfx/ozone/surface_factory_ozone.h"
9#include "ui/gfx/ozone/surface_ozone.h"
10#include "ui/gfx/skia_util.h"
11#include "ui/gfx/vsync_provider.h"
12
13namespace content {
14
15SoftwareOutputDeviceOzone::SoftwareOutputDeviceOzone(ui::Compositor* compositor)
16    : compositor_(compositor) {
17  gfx::SurfaceFactoryOzone* factory = gfx::SurfaceFactoryOzone::GetInstance();
18
19  if (factory->InitializeHardware() != gfx::SurfaceFactoryOzone::INITIALIZED)
20    LOG(FATAL) << "Failed to initialize hardware in OZONE";
21
22  surface_ozone_ = factory->CreateSurfaceForWidget(compositor_->widget());
23
24  if (!surface_ozone_->InitializeCanvas())
25    LOG(FATAL) << "Failed to initialize canvas";
26
27  vsync_provider_ = surface_ozone_->CreateVSyncProvider();
28}
29
30SoftwareOutputDeviceOzone::~SoftwareOutputDeviceOzone() {
31}
32
33void SoftwareOutputDeviceOzone::Resize(const gfx::Size& viewport_size) {
34  if (viewport_size_ == viewport_size)
35    return;
36
37  viewport_size_ = viewport_size;
38
39  surface_ozone_->ResizeCanvas(viewport_size_);
40}
41
42SkCanvas* SoftwareOutputDeviceOzone::BeginPaint(const gfx::Rect& damage_rect) {
43  DCHECK(gfx::Rect(viewport_size_).Contains(damage_rect));
44
45  // Get canvas for next frame.
46  canvas_ = surface_ozone_->GetCanvas();
47
48  canvas_->clipRect(gfx::RectToSkRect(damage_rect), SkRegion::kReplace_Op);
49  // Save the current state so we can restore once we're done drawing. This is
50  // saved after the clip since we want to keep the clip information after we're
51  // done drawing such that OZONE knows what was updated.
52  canvas_->save();
53
54  return SoftwareOutputDevice::BeginPaint(damage_rect);
55}
56
57void SoftwareOutputDeviceOzone::EndPaint(cc::SoftwareFrameData* frame_data) {
58  SoftwareOutputDevice::EndPaint(frame_data);
59
60  canvas_->restore();
61
62  if (damage_rect_.IsEmpty())
63    return;
64
65  bool scheduled = surface_ozone_->PresentCanvas();
66  DCHECK(scheduled) << "Failed to present canvas";
67}
68
69}  // namespace content
70