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
|
/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#if SK_SUPPORT_GPU
#include "GrLayerHoister.h"
#include "GrRecordReplaceDraw.h"
#endif
#include "SkCanvas.h"
#include "SkMultiPictureDraw.h"
#include "SkPicture.h"
#include "SkTaskGroup.h"
void SkMultiPictureDraw::DrawData::draw() {
fCanvas->drawPicture(fPicture, &fMatrix, fPaint);
}
void SkMultiPictureDraw::DrawData::init(SkCanvas* canvas, const SkPicture* picture,
const SkMatrix* matrix, const SkPaint* paint) {
fPicture = SkRef(picture);
fCanvas = SkRef(canvas);
if (matrix) {
fMatrix = *matrix;
} else {
fMatrix.setIdentity();
}
if (paint) {
fPaint = SkNEW_ARGS(SkPaint, (*paint));
} else {
fPaint = NULL;
}
}
void SkMultiPictureDraw::DrawData::Reset(SkTDArray<DrawData>& data) {
for (int i = 0; i < data.count(); ++i) {
data[i].fPicture->unref();
data[i].fCanvas->unref();
SkDELETE(data[i].fPaint);
}
data.rewind();
}
//////////////////////////////////////////////////////////////////////////////////////
SkMultiPictureDraw::SkMultiPictureDraw(int reserve) {
if (reserve > 0) {
fGPUDrawData.setReserve(reserve);
fThreadSafeDrawData.setReserve(reserve);
}
}
void SkMultiPictureDraw::reset() {
DrawData::Reset(fGPUDrawData);
DrawData::Reset(fThreadSafeDrawData);
}
void SkMultiPictureDraw::add(SkCanvas* canvas,
const SkPicture* picture,
const SkMatrix* matrix,
const SkPaint* paint) {
if (NULL == canvas || NULL == picture) {
SkDEBUGFAIL("parameters to SkMultiPictureDraw::add should be non-NULL");
return;
}
SkTDArray<DrawData>& array = canvas->getGrContext() ? fGPUDrawData : fThreadSafeDrawData;
array.append()->init(canvas, picture, matrix, paint);
}
#undef SK_IGNORE_GPU_LAYER_HOISTING
#define SK_IGNORE_GPU_LAYER_HOISTING 1
class AutoMPDReset : SkNoncopyable {
SkMultiPictureDraw* fMPD;
public:
AutoMPDReset(SkMultiPictureDraw* mpd) : fMPD(mpd) {}
~AutoMPDReset() { fMPD->reset(); }
};
void SkMultiPictureDraw::draw() {
AutoMPDReset mpdreset(this);
// we place the taskgroup after the MPDReset, to ensure that we don't delete the DrawData
// objects until after we're finished the tasks (which have pointers to the data).
SkTaskGroup group;
for (int i = 0; i < fThreadSafeDrawData.count(); ++i) {
group.add(DrawData::Run, &fThreadSafeDrawData[i]);
}
// we deliberately don't call wait() here, since the destructor will do that, this allows us
// to continue processing gpu-data without having to wait on the cpu tasks.
const int count = fGPUDrawData.count();
if (0 == count) {
return;
}
#ifndef SK_IGNORE_GPU_LAYER_HOISTING
GrContext* context = fGPUDrawData[0].fCanvas->getGrContext();
SkASSERT(context);
// Start by collecting all the layers that are going to be atlased and render
// them (if necessary). Hoisting the free floating layers is deferred until
// drawing the canvas that requires them.
SkTDArray<GrHoistedLayer> atlasedNeedRendering, atlasedRecycled;
for (int i = 0; i < count; ++i) {
const DrawData& data = fGPUDrawData[i];
// we only expect 1 context for all the canvases
SkASSERT(data.canvas->getGrContext() == context);
if (!data.fPaint && data.fMatrix.isIdentity()) {
// TODO: this path always tries to optimize pictures. Should we
// switch to this API approach (vs. SkCanvas::EXPERIMENTAL_optimize)?
data.fCanvas->EXPERIMENTAL_optimize(data.fPicture);
SkRect clipBounds;
if (!data.fCanvas->getClipBounds(&clipBounds)) {
continue;
}
// TODO: sorting the cacheable layers from smallest to largest
// would improve the packing and reduce the number of swaps
// TODO: another optimization would be to make a first pass to
// lock any required layer that is already in the atlas
GrLayerHoister::FindLayersToAtlas(context, data.fPicture,
clipBounds,
&atlasedNeedRendering, &atlasedRecycled);
}
}
GrLayerHoister::DrawLayersToAtlas(context, atlasedNeedRendering);
SkTDArray<GrHoistedLayer> needRendering, recycled;
#endif
for (int i = 0; i < count; ++i) {
const DrawData& data = fGPUDrawData[i];
SkCanvas* canvas = data.fCanvas;
const SkPicture* picture = data.fPicture;
#ifndef SK_IGNORE_GPU_LAYER_HOISTING
if (!data.fPaint && data.fMatrix.isIdentity()) {
SkRect clipBounds;
if (!canvas->getClipBounds(&clipBounds)) {
continue;
}
// Find the layers required by this canvas. It will return atlased
// layers in the 'recycled' list since they have already been drawn.
GrLayerHoister::FindLayersToHoist(context, picture,
clipBounds, &needRendering, &recycled);
GrLayerHoister::DrawLayers(context, needRendering);
GrReplacements replacements;
GrLayerHoister::ConvertLayersToReplacements(needRendering, &replacements);
GrLayerHoister::ConvertLayersToReplacements(recycled, &replacements);
const SkMatrix initialMatrix = canvas->getTotalMatrix();
// Render the entire picture using new layers
GrRecordReplaceDraw(picture, canvas, &replacements, initialMatrix, NULL);
GrLayerHoister::UnlockLayers(context, needRendering);
GrLayerHoister::UnlockLayers(context, recycled);
needRendering.rewind();
recycled.rewind();
} else
#endif
{
canvas->drawPicture(picture, &data.fMatrix, data.fPaint);
}
}
#ifndef SK_IGNORE_GPU_LAYER_HOISTING
GrLayerHoister::UnlockLayers(context, atlasedNeedRendering);
GrLayerHoister::UnlockLayers(context, atlasedRecycled);
#endif
}
|
