1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/resources/gpu_rasterizer.h"
#include <algorithm>
#include "base/bind.h"
#include "base/metrics/histogram.h"
#include "base/trace_event/trace_event.h"
#include "cc/debug/devtools_instrumentation.h"
#include "cc/debug/frame_viewer_instrumentation.h"
#include "cc/output/context_provider.h"
#include "cc/resources/raster_buffer.h"
#include "cc/resources/raster_source.h"
#include "cc/resources/resource.h"
#include "cc/resources/resource_provider.h"
#include "cc/resources/scoped_gpu_raster.h"
#include "cc/resources/tile_manager.h"
#include "gpu/command_buffer/client/gles2_interface.h"
#include "third_party/skia/include/core/SkMultiPictureDraw.h"
#include "third_party/skia/include/core/SkPictureRecorder.h"
#include "third_party/skia/include/core/SkSurface.h"
#include "third_party/skia/include/gpu/GrContext.h"
namespace cc {
// static
scoped_ptr<GpuRasterizer> GpuRasterizer::Create(
ContextProvider* context_provider,
ResourceProvider* resource_provider,
bool use_distance_field_text,
bool threaded_gpu_rasterization_enabled,
int msaa_sample_count) {
return make_scoped_ptr<GpuRasterizer>(new GpuRasterizer(
context_provider, resource_provider, use_distance_field_text,
threaded_gpu_rasterization_enabled, msaa_sample_count));
}
GpuRasterizer::GpuRasterizer(ContextProvider* context_provider,
ResourceProvider* resource_provider,
bool use_distance_field_text,
bool threaded_gpu_rasterization_enabled,
int msaa_sample_count)
: resource_provider_(resource_provider),
use_distance_field_text_(use_distance_field_text),
threaded_gpu_rasterization_enabled_(threaded_gpu_rasterization_enabled),
msaa_sample_count_(msaa_sample_count) {
}
GpuRasterizer::~GpuRasterizer() {
}
PrepareTilesMode GpuRasterizer::GetPrepareTilesMode() {
return threaded_gpu_rasterization_enabled_
? PrepareTilesMode::RASTERIZE_PRIORITIZED_TILES
: PrepareTilesMode::PREPARE_NONE;
}
ContextProvider* GpuRasterizer::GetContextProvider(bool worker_context) {
return worker_context
? resource_provider_->output_surface()->worker_context_provider()
: resource_provider_->output_surface()->context_provider();
}
void GpuRasterizer::RasterizeTiles(
const TileVector& tiles,
ResourcePool* resource_pool,
ResourceFormat resource_format,
const UpdateTileDrawInfoCallback& update_tile_draw_info) {
ScopedGpuRaster gpu_raster(GetContextProvider(false));
ScopedResourceWriteLocks locks;
for (Tile* tile : tiles) {
RasterSource::SolidColorAnalysis analysis;
if (tile->use_picture_analysis())
PerformSolidColorAnalysis(tile, &analysis);
scoped_ptr<ScopedResource> resource;
if (!analysis.is_solid_color) {
resource = resource_pool->AcquireResource(tile->desired_texture_size(),
resource_format);
AddToMultiPictureDraw(tile, resource.get(), &locks);
}
update_tile_draw_info.Run(tile, resource.Pass(), analysis);
}
// If MSAA is enabled, tell Skia to resolve each render target after draw.
multi_picture_draw_.draw(msaa_sample_count_ > 0);
}
void GpuRasterizer::RasterizeSource(
bool use_worker_context,
ResourceProvider::ScopedWriteLockGr* write_lock,
const RasterSource* raster_source,
const gfx::Rect& rect,
float scale) {
// Play back raster_source into temp SkPicture.
SkPictureRecorder recorder;
gfx::Size size = write_lock->resource()->size;
const int flags = SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag;
skia::RefPtr<SkCanvas> canvas = skia::SharePtr(
recorder.beginRecording(size.width(), size.height(), NULL, flags));
canvas->save();
raster_source->PlaybackToCanvas(canvas.get(), rect, scale);
canvas->restore();
skia::RefPtr<SkPicture> picture = skia::AdoptRef(recorder.endRecording());
// Turn on distance fields for layers that have ever animated.
bool use_distance_field_text =
use_distance_field_text_ ||
raster_source->ShouldAttemptToUseDistanceFieldText();
// Playback picture into resource.
{
ScopedGpuRaster gpu_raster(GetContextProvider(use_worker_context));
write_lock->InitSkSurface(use_worker_context, use_distance_field_text,
raster_source->CanUseLCDText(),
msaa_sample_count_);
picture->playback(write_lock->sk_surface()->getCanvas(), nullptr);
write_lock->ReleaseSkSurface();
}
}
void GpuRasterizer::PerformSolidColorAnalysis(
const Tile* tile,
RasterSource::SolidColorAnalysis* analysis) {
const void* tile_id = static_cast<const void*>(tile);
frame_viewer_instrumentation::ScopedAnalyzeTask analyze_task(
tile_id, tile->combined_priority().resolution,
tile->source_frame_number(), tile->layer_id());
DCHECK(tile->raster_source());
tile->raster_source()->PerformSolidColorAnalysis(
tile->content_rect(), tile->contents_scale(), analysis);
// Record the solid color prediction.
UMA_HISTOGRAM_BOOLEAN("Renderer4.SolidColorTilesAnalyzed",
analysis->is_solid_color);
}
void GpuRasterizer::AddToMultiPictureDraw(const Tile* tile,
const ScopedResource* resource,
ScopedResourceWriteLocks* locks) {
const void* tile_id = static_cast<const void*>(tile);
frame_viewer_instrumentation::ScopedRasterTask raster_task(
tile_id, tile->combined_priority().resolution,
tile->source_frame_number(), tile->layer_id());
DCHECK(tile->raster_source());
// Turn on distance fields for layers that have ever animated.
bool use_distance_field_text =
use_distance_field_text_ ||
tile->raster_source()->ShouldAttemptToUseDistanceFieldText();
scoped_ptr<ResourceProvider::ScopedWriteLockGr> lock(
new ResourceProvider::ScopedWriteLockGr(resource_provider_,
resource->id()));
lock->InitSkSurface(false, use_distance_field_text,
tile->raster_source()->CanUseLCDText(),
msaa_sample_count_);
SkSurface* sk_surface = lock->sk_surface();
if (!sk_surface)
return;
locks->push_back(lock.Pass());
SkRTreeFactory factory;
SkPictureRecorder recorder;
gfx::Size size = resource->size();
const int flags = SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag;
skia::RefPtr<SkCanvas> canvas = skia::SharePtr(
recorder.beginRecording(size.width(), size.height(), &factory, flags));
canvas->save();
tile->raster_source()->PlaybackToCanvas(canvas.get(), tile->content_rect(),
tile->contents_scale());
canvas->restore();
// Add the canvas and recorded picture to |multi_picture_draw_|.
skia::RefPtr<SkPicture> picture = skia::AdoptRef(recorder.endRecording());
multi_picture_draw_.add(sk_surface->getCanvas(), picture.get());
}
} // namespace cc
|
