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Issue 1144693002: cc: Move files out of cc/resources/. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: resources: android Created 5 years, 7 months ago
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1 // Copyright 2015 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 "cc/resources/gpu_rasterizer.h"
6
7 #include <algorithm>
8
9 #include "base/bind.h"
10 #include "base/metrics/histogram.h"
11 #include "base/trace_event/trace_event.h"
12 #include "cc/debug/devtools_instrumentation.h"
13 #include "cc/debug/frame_viewer_instrumentation.h"
14 #include "cc/output/context_provider.h"
15 #include "cc/resources/raster_buffer.h"
16 #include "cc/resources/raster_source.h"
17 #include "cc/resources/resource.h"
18 #include "cc/resources/resource_provider.h"
19 #include "cc/resources/scoped_gpu_raster.h"
20 #include "cc/resources/tile_manager.h"
21 #include "gpu/command_buffer/client/gles2_interface.h"
22 #include "third_party/skia/include/core/SkMultiPictureDraw.h"
23 #include "third_party/skia/include/core/SkPictureRecorder.h"
24 #include "third_party/skia/include/core/SkSurface.h"
25 #include "third_party/skia/include/gpu/GrContext.h"
26
27 namespace cc {
28
29 GpuRasterizer::GpuRasterizer(ContextProvider* context_provider,
30 ResourceProvider* resource_provider,
31 bool use_distance_field_text,
32 int msaa_sample_count)
33 : resource_provider_(resource_provider),
34 use_distance_field_text_(use_distance_field_text),
35 msaa_sample_count_(msaa_sample_count) {
36 }
37
38 GpuRasterizer::~GpuRasterizer() {
39 }
40
41 void GpuRasterizer::RasterizeSource(
42 ResourceProvider::ScopedWriteLockGr* write_lock,
43 const RasterSource* raster_source,
44 const gfx::Rect& rect,
45 float scale) {
46 // Play back raster_source into temp SkPicture.
47 SkPictureRecorder recorder;
48 gfx::Size size = write_lock->resource()->size;
49 const int flags = SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag;
50 skia::RefPtr<SkCanvas> canvas = skia::SharePtr(
51 recorder.beginRecording(size.width(), size.height(), NULL, flags));
52 canvas->save();
53 raster_source->PlaybackToCanvas(canvas.get(), rect, scale);
54 canvas->restore();
55 skia::RefPtr<SkPicture> picture =
56 skia::AdoptRef(recorder.endRecordingAsPicture());
57
58 // Turn on distance fields for layers that have ever animated.
59 bool use_distance_field_text =
60 use_distance_field_text_ ||
61 raster_source->ShouldAttemptToUseDistanceFieldText();
62
63 // Playback picture into resource.
64 {
65 ScopedGpuRaster gpu_raster(
66 resource_provider_->output_surface()->worker_context_provider());
67 write_lock->InitSkSurface(use_distance_field_text,
68 raster_source->CanUseLCDText(),
69 msaa_sample_count_);
70
71 SkSurface* sk_surface = write_lock->sk_surface();
72
73 // Allocating an SkSurface will fail after a lost context. Pretend we
74 // rasterized, as the contents of the resource don't matter anymore.
75 if (!sk_surface)
76 return;
77
78 SkMultiPictureDraw multi_picture_draw;
79 multi_picture_draw.add(sk_surface->getCanvas(), picture.get());
80 multi_picture_draw.draw(msaa_sample_count_ > 0);
81 write_lock->ReleaseSkSurface();
82 }
83 }
84
85 } // namespace cc
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