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Issue 1951193002: cc: Add mailbox support to ResourceProvider write locks. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@worker_context_stream
Patch Set: vmpstr's review Created 4 years, 6 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/raster/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/playback/raster_source.h"
16 #include "cc/raster/raster_buffer.h"
17 #include "cc/raster/scoped_gpu_raster.h"
18 #include "cc/resources/resource.h"
19 #include "cc/tiles/tile_manager.h"
20 #include "gpu/command_buffer/client/gles2_interface.h"
21 #include "third_party/skia/include/core/SkMultiPictureDraw.h"
22 #include "third_party/skia/include/core/SkPictureRecorder.h"
23 #include "third_party/skia/include/core/SkSurface.h"
24 #include "third_party/skia/include/gpu/GrContext.h"
25
26 namespace cc {
27
28 GpuRasterizer::GpuRasterizer(ContextProvider* worker_context_provider,
29 ResourceProvider* resource_provider,
30 bool use_distance_field_text,
31 int msaa_sample_count)
32 : worker_context_provider_(worker_context_provider),
33 resource_provider_(resource_provider),
34 use_distance_field_text_(use_distance_field_text),
35 msaa_sample_count_(msaa_sample_count) {
36 DCHECK(worker_context_provider_);
37 }
38
39 GpuRasterizer::~GpuRasterizer() {
40 }
41
42 void GpuRasterizer::RasterizeSource(
43 ResourceProvider::ScopedWriteLockGr* write_lock,
44 const RasterSource* raster_source,
45 const gfx::Rect& raster_full_rect,
46 const gfx::Rect& playback_rect,
47 float scale,
48 const RasterSource::PlaybackSettings& playback_settings) {
49 // Play back raster_source into temp SkPicture.
50 SkPictureRecorder recorder;
51 const gfx::Size size = write_lock->GetResourceSize();
52 const int flags = SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag;
53 sk_sp<SkCanvas> canvas = sk_ref_sp(
54 recorder.beginRecording(size.width(), size.height(), NULL, flags));
55 canvas->save();
56 raster_source->PlaybackToCanvas(canvas.get(), raster_full_rect, playback_rect,
57 scale, playback_settings);
58 canvas->restore();
59 sk_sp<SkPicture> picture = recorder.finishRecordingAsPicture();
60
61 // Turn on distance fields for layers that have ever animated.
62 bool use_distance_field_text =
63 use_distance_field_text_ ||
64 raster_source->ShouldAttemptToUseDistanceFieldText();
65
66 // Playback picture into resource.
67 {
68 ScopedGpuRaster gpu_raster(worker_context_provider_);
69 write_lock->InitSkSurface(
70 worker_context_provider_->GrContext(), use_distance_field_text,
71 raster_source->CanUseLCDText(), msaa_sample_count_);
72
73 SkSurface* sk_surface = write_lock->sk_surface();
74
75 // Allocating an SkSurface will fail after a lost context. Pretend we
76 // rasterized, as the contents of the resource don't matter anymore.
77 if (!sk_surface)
78 return;
79
80 SkMultiPictureDraw multi_picture_draw;
81 multi_picture_draw.add(sk_surface->getCanvas(), picture.get());
82 multi_picture_draw.draw(false);
83 write_lock->ReleaseSkSurface();
84 }
85 }
86
87 } // namespace cc
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