src/content/browser/compositor/software_output_device_ozone.cc

   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/SkBitmapDevice.h"
   7 #include "third_party/skia/include/core/SkDevice.h"
   8 #include "ui/compositor/compositor.h"
   9 #include "ui/gfx/ozone/surface_factory_ozone.h"
  10 #include "ui/gfx/skia_util.h"
  11 #include "ui/gfx/vsync_provider.h"
  12
  13 namespace content {
  14
  15 SoftwareOutputDeviceOzone::SoftwareOutputDeviceOzone(ui::Compositor* compositor)
  16     : compositor_(compositor), realized_widget_(gfx::kNullAcceleratedWidget) {
  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   realized_widget_ = factory->RealizeAcceleratedWidget(compositor_->widget());
  23
  24   if (realized_widget_ == gfx::kNullAcceleratedWidget)
  25     LOG(FATAL) << "Failed to get a realized AcceleratedWidget";
  26
  27   vsync_provider_ = factory->CreateVSyncProvider(realized_widget_);
  28 }
  29
  30 SoftwareOutputDeviceOzone::~SoftwareOutputDeviceOzone() {
  31 }
  32
  33 void SoftwareOutputDeviceOzone::Resize(const gfx::Size& viewport_size) {
  34   if (viewport_size_ == viewport_size)
  35     return;
  36
  37   viewport_size_ = viewport_size;
  38   gfx::Rect bounds(viewport_size_);
  39
  40   gfx::SurfaceFactoryOzone* factory = gfx::SurfaceFactoryOzone::GetInstance();
  41   factory->AttemptToResizeAcceleratedWidget(compositor_->widget(),
  42                                             bounds);
  43
  44   canvas_ = skia::SharePtr(factory->GetCanvasForWidget(realized_widget_));
  45   device_ = skia::SharePtr(canvas_->getDevice());
  46 }
  47
  48 SkCanvas* SoftwareOutputDeviceOzone::BeginPaint(const gfx::Rect& damage_rect) {
  49   DCHECK(gfx::Rect(viewport_size_).Contains(damage_rect));
  50
  51   canvas_->clipRect(gfx::RectToSkRect(damage_rect), SkRegion::kReplace_Op);
  52   // Save the current state so we can restore once we're done drawing. This is
  53   // saved after the clip since we want to keep the clip information after we're
  54   // done drawing such that OZONE knows what was updated.
  55   canvas_->save();
  56
  57   return SoftwareOutputDevice::BeginPaint(damage_rect);
  58 }
  59
  60 void SoftwareOutputDeviceOzone::EndPaint(cc::SoftwareFrameData* frame_data) {
  61   SoftwareOutputDevice::EndPaint(frame_data);
  62
  63   canvas_->restore();
  64
  65   if (damage_rect_.IsEmpty())
  66     return;
  67
  68   bool scheduled = gfx::SurfaceFactoryOzone::GetInstance()->SchedulePageFlip(
  69       compositor_->widget());
  70   DCHECK(scheduled) << "Failed to schedule pageflip";
  71 }
  72
  73 }  // namespace content