GPU workaround to simulate Out of Memory errors with large textures
[chromium-blink-merge.git] / cc / resources / skpicture_content_layer_updater.cc
blobace97a4e8ed827e2c02c8b0d4139d9eed6b53783
1 // Copyright 2011 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.
5 #include "cc/resources/skpicture_content_layer_updater.h"
7 #include "base/trace_event/trace_event.h"
8 #include "cc/debug/rendering_stats_instrumentation.h"
9 #include "cc/resources/layer_painter.h"
10 #include "cc/resources/prioritized_resource.h"
11 #include "cc/resources/resource_update_queue.h"
12 #include "third_party/skia/include/core/SkCanvas.h"
13 #include "third_party/skia/include/core/SkPictureRecorder.h"
15 namespace cc {
17 SkPictureContentLayerUpdater::SkPictureContentLayerUpdater(
18 scoped_ptr<LayerPainter> painter,
19 int layer_id)
20 : ContentLayerUpdater(painter.Pass(), layer_id) {
23 SkPictureContentLayerUpdater::~SkPictureContentLayerUpdater() {}
25 void SkPictureContentLayerUpdater::PrepareToUpdate(
26 const gfx::Size& content_size,
27 const gfx::Rect& paint_rect,
28 const gfx::Size& tile_size,
29 float contents_width_scale,
30 float contents_height_scale) {
31 SkPictureRecorder recorder;
32 SkCanvas* canvas =
33 recorder.beginRecording(paint_rect.width(), paint_rect.height(), NULL, 0);
34 DCHECK_EQ(paint_rect.width(), canvas->getBaseLayerSize().width());
35 DCHECK_EQ(paint_rect.height(), canvas->getBaseLayerSize().height());
36 PaintContents(canvas,
37 content_size,
38 paint_rect,
39 contents_width_scale,
40 contents_height_scale);
41 picture_ = skia::AdoptRef(recorder.endRecording());
44 void SkPictureContentLayerUpdater::DrawPicture(SkCanvas* canvas) {
45 TRACE_EVENT0("cc", "SkPictureContentLayerUpdater::DrawPicture");
46 if (picture_)
47 canvas->drawPicture(picture_.get());
50 } // namespace cc