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
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrResourceProvider.h"
#include "GrGpu.h"
#include "GrIndexBuffer.h"
#include "GrPathRendering.h"
#include "GrRenderTarget.h"
#include "GrRenderTargetPriv.h"
#include "GrResourceCache.h"
#include "GrResourceKey.h"
#include "GrStencilAttachment.h"
#include "GrVertexBuffer.h"
GR_DECLARE_STATIC_UNIQUE_KEY(gQuadIndexBufferKey);
GrResourceProvider::GrResourceProvider(GrGpu* gpu, GrResourceCache* cache) : INHERITED(gpu, cache) {
GR_DEFINE_STATIC_UNIQUE_KEY(gQuadIndexBufferKey);
fQuadIndexBufferKey = gQuadIndexBufferKey;
}
const GrIndexBuffer* GrResourceProvider::createInstancedIndexBuffer(const uint16_t* pattern,
int patternSize,
int reps,
int vertCount,
const GrUniqueKey& key) {
size_t bufferSize = patternSize * reps * sizeof(uint16_t);
// This is typically used in GrBatchs, so we assume kNoPendingIO.
GrIndexBuffer* buffer = this->createIndexBuffer(bufferSize, kStatic_BufferUsage,
kNoPendingIO_Flag);
if (!buffer) {
return nullptr;
}
uint16_t* data = (uint16_t*) buffer->map();
bool useTempData = (nullptr == data);
if (useTempData) {
data = new uint16_t[reps * patternSize];
}
for (int i = 0; i < reps; ++i) {
int baseIdx = i * patternSize;
uint16_t baseVert = (uint16_t)(i * vertCount);
for (int j = 0; j < patternSize; ++j) {
data[baseIdx+j] = baseVert + pattern[j];
}
}
if (useTempData) {
if (!buffer->updateData(data, bufferSize)) {
buffer->unref();
return nullptr;
}
delete[] data;
} else {
buffer->unmap();
}
this->assignUniqueKeyToResource(key, buffer);
return buffer;
}
const GrIndexBuffer* GrResourceProvider::createQuadIndexBuffer() {
static const int kMaxQuads = 1 << 12; // max possible: (1 << 14) - 1;
GR_STATIC_ASSERT(4 * kMaxQuads <= 65535);
static const uint16_t kPattern[] = { 0, 1, 2, 0, 2, 3 };
return this->createInstancedIndexBuffer(kPattern, 6, kMaxQuads, 4, fQuadIndexBufferKey);
}
GrPath* GrResourceProvider::createPath(const SkPath& path, const GrStrokeInfo& stroke) {
SkASSERT(this->gpu()->pathRendering());
return this->gpu()->pathRendering()->createPath(path, stroke);
}
GrPathRange* GrResourceProvider::createPathRange(GrPathRange::PathGenerator* gen,
const GrStrokeInfo& stroke) {
SkASSERT(this->gpu()->pathRendering());
return this->gpu()->pathRendering()->createPathRange(gen, stroke);
}
GrPathRange* GrResourceProvider::createGlyphs(const SkTypeface* tf, const SkDescriptor* desc,
const GrStrokeInfo& stroke) {
SkASSERT(this->gpu()->pathRendering());
return this->gpu()->pathRendering()->createGlyphs(tf, desc, stroke);
}
GrIndexBuffer* GrResourceProvider::createIndexBuffer(size_t size, BufferUsage usage,
uint32_t flags) {
if (this->isAbandoned()) {
return nullptr;
}
bool noPendingIO = SkToBool(flags & kNoPendingIO_Flag);
bool dynamic = kDynamic_BufferUsage == usage;
if (dynamic) {
// bin by pow2 with a reasonable min
static const uint32_t MIN_SIZE = 1 << 12;
size = SkTMax(MIN_SIZE, GrNextPow2(SkToUInt(size)));
GrScratchKey key;
GrIndexBuffer::ComputeScratchKey(size, true, &key);
uint32_t scratchFlags = 0;
if (noPendingIO) {
scratchFlags = GrResourceCache::kRequireNoPendingIO_ScratchFlag;
} else {
scratchFlags = GrResourceCache::kPreferNoPendingIO_ScratchFlag;
}
GrGpuResource* resource = this->cache()->findAndRefScratchResource(key, size, scratchFlags);
if (resource) {
return static_cast<GrIndexBuffer*>(resource);
}
}
return this->gpu()->createIndexBuffer(size, dynamic);
}
GrVertexBuffer* GrResourceProvider::createVertexBuffer(size_t size, BufferUsage usage,
uint32_t flags) {
if (this->isAbandoned()) {
return nullptr;
}
bool noPendingIO = SkToBool(flags & kNoPendingIO_Flag);
bool dynamic = kDynamic_BufferUsage == usage;
if (dynamic) {
// bin by pow2 with a reasonable min
static const uint32_t MIN_SIZE = 1 << 12;
size = SkTMax(MIN_SIZE, GrNextPow2(SkToUInt(size)));
GrScratchKey key;
GrVertexBuffer::ComputeScratchKey(size, true, &key);
uint32_t scratchFlags = 0;
if (noPendingIO) {
scratchFlags = GrResourceCache::kRequireNoPendingIO_ScratchFlag;
} else {
scratchFlags = GrResourceCache::kPreferNoPendingIO_ScratchFlag;
}
GrGpuResource* resource = this->cache()->findAndRefScratchResource(key, size, scratchFlags);
if (resource) {
return static_cast<GrVertexBuffer*>(resource);
}
}
return this->gpu()->createVertexBuffer(size, dynamic);
}
GrBatchAtlas* GrResourceProvider::createAtlas(GrPixelConfig config,
int width, int height,
int numPlotsX, int numPlotsY,
GrBatchAtlas::EvictionFunc func, void* data) {
GrSurfaceDesc desc;
desc.fFlags = kNone_GrSurfaceFlags;
desc.fWidth = width;
desc.fHeight = height;
desc.fConfig = config;
// We don't want to flush the context so we claim we're in the middle of flushing so as to
// guarantee we do not recieve a texture with pending IO
// TODO: Determine how to avoid having to do this. (https://bug.skia.org/4156)
static const uint32_t kFlags = GrResourceProvider::kNoPendingIO_Flag;
GrTexture* texture = this->createApproxTexture(desc, kFlags);
if (!texture) {
return nullptr;
}
GrBatchAtlas* atlas = new GrBatchAtlas(texture, numPlotsX, numPlotsY);
atlas->registerEvictionCallback(func, data);
return atlas;
}
GrStencilAttachment* GrResourceProvider::attachStencilAttachment(GrRenderTarget* rt) {
SkASSERT(rt);
if (rt->renderTargetPriv().getStencilAttachment()) {
return rt->renderTargetPriv().getStencilAttachment();
}
if (!rt->wasDestroyed() && rt->canAttemptStencilAttachment()) {
GrUniqueKey sbKey;
int width = rt->width();
int height = rt->height();
#if 0
if (this->caps()->oversizedStencilSupport()) {
width = SkNextPow2(width);
height = SkNextPow2(height);
}
#endif
bool newStencil = false;
GrStencilAttachment::ComputeSharedStencilAttachmentKey(width, height,
rt->numStencilSamples(), &sbKey);
GrStencilAttachment* stencil = static_cast<GrStencilAttachment*>(
this->findAndRefResourceByUniqueKey(sbKey));
if (!stencil) {
// Need to try and create a new stencil
stencil = this->gpu()->createStencilAttachmentForRenderTarget(rt, width, height);
if (stencil) {
stencil->resourcePriv().setUniqueKey(sbKey);
newStencil = true;
}
}
if (rt->renderTargetPriv().attachStencilAttachment(stencil)) {
if (newStencil) {
// Right now we're clearing the stencil attachment here after it is
// attached to an RT for the first time. When we start matching
// stencil buffers with smaller color targets this will no longer
// be correct because it won't be guaranteed to clear the entire
// sb.
// We used to clear down in the GL subclass using a special purpose
// FBO. But iOS doesn't allow a stencil-only FBO. It reports unsupported
// FBO status.
this->gpu()->clearStencil(rt);
}
}
}
return rt->renderTargetPriv().getStencilAttachment();
}
|
