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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2015 Google Inc. | 3 * Copyright 2015 Google Inc. |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 #include "GrAALinearizingConvexPathRenderer.h" | 9 #include "GrAALinearizingConvexPathRenderer.h" |
10 | 10 |
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47 return false; | 47 return false; |
48 } | 48 } |
49 if (!args.fPath->isConvex()) { | 49 if (!args.fPath->isConvex()) { |
50 return false; | 50 return false; |
51 } | 51 } |
52 if (args.fStroke->getStyle() == SkStrokeRec::kStroke_Style) { | 52 if (args.fStroke->getStyle() == SkStrokeRec::kStroke_Style) { |
53 if (!args.fViewMatrix->isSimilarity()) { | 53 if (!args.fViewMatrix->isSimilarity()) { |
54 return false; | 54 return false; |
55 } | 55 } |
56 SkScalar strokeWidth = args.fViewMatrix->getMaxScale() * args.fStroke->g
etWidth(); | 56 SkScalar strokeWidth = args.fViewMatrix->getMaxScale() * args.fStroke->g
etWidth(); |
57 return strokeWidth >= 1.0f && strokeWidth <= kMaxStrokeWidth && !args.fS
troke->isDashed() && | 57 return strokeWidth >= 1.0f && strokeWidth <= kMaxStrokeWidth && !args.fS
troke->isDashed() && |
58 SkPathPriv::LastVerbIsClose(*args.fPath) && | 58 SkPathPriv::LastVerbIsClose(*args.fPath) && |
59 args.fStroke->getJoin() != SkPaint::Join::kRound_Join; | 59 args.fStroke->getJoin() != SkPaint::Join::kRound_Join; |
60 } | 60 } |
61 return args.fStroke->getStyle() == SkStrokeRec::kFill_Style; | 61 return args.fStroke->getStyle() == SkStrokeRec::kFill_Style; |
62 } | 62 } |
63 | 63 |
64 // extract the result vertices and indices from the GrAAConvexTessellator | 64 // extract the result vertices and indices from the GrAAConvexTessellator |
65 static void extract_verts(const GrAAConvexTessellator& tess, | 65 static void extract_verts(const GrAAConvexTessellator& tess, |
66 void* vertices, | 66 void* vertices, |
67 size_t vertexStride, | 67 size_t vertexStride, |
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78 // Make 'verts' point to the colors | 78 // Make 'verts' point to the colors |
79 verts += sizeof(SkPoint); | 79 verts += sizeof(SkPoint); |
80 for (int i = 0; i < tess.numPts(); ++i) { | 80 for (int i = 0; i < tess.numPts(); ++i) { |
81 if (tweakAlphaForCoverage) { | 81 if (tweakAlphaForCoverage) { |
82 SkASSERT(SkScalarRoundToInt(255.0f * tess.coverage(i)) <= 255); | 82 SkASSERT(SkScalarRoundToInt(255.0f * tess.coverage(i)) <= 255); |
83 unsigned scale = SkScalarRoundToInt(255.0f * tess.coverage(i)); | 83 unsigned scale = SkScalarRoundToInt(255.0f * tess.coverage(i)); |
84 GrColor scaledColor = (0xff == scale) ? color : SkAlphaMulQ(color, s
cale); | 84 GrColor scaledColor = (0xff == scale) ? color : SkAlphaMulQ(color, s
cale); |
85 *reinterpret_cast<GrColor*>(verts + i * vertexStride) = scaledColor; | 85 *reinterpret_cast<GrColor*>(verts + i * vertexStride) = scaledColor; |
86 } else { | 86 } else { |
87 *reinterpret_cast<GrColor*>(verts + i * vertexStride) = color; | 87 *reinterpret_cast<GrColor*>(verts + i * vertexStride) = color; |
88 *reinterpret_cast<float*>(verts + i * vertexStride + sizeof(GrColor)
) = | 88 *reinterpret_cast<float*>(verts + i * vertexStride + sizeof(GrColor)
) = |
89 tess.coverage(i); | 89 tess.coverage(i); |
90 } | 90 } |
91 } | 91 } |
92 | 92 |
93 for (int i = 0; i < tess.numIndices(); ++i) { | 93 for (int i = 0; i < tess.numIndices(); ++i) { |
94 idxs[i] = tess.index(i) + firstIndex; | 94 idxs[i] = tess.index(i) + firstIndex; |
95 } | 95 } |
96 } | 96 } |
97 | 97 |
98 static const GrGeometryProcessor* create_fill_gp(bool tweakAlphaForCoverage, | 98 static const GrGeometryProcessor* create_fill_gp(bool tweakAlphaForCoverage, |
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152 | 152 |
153 // setup batch properties | 153 // setup batch properties |
154 fBatch.fColorIgnored = !opt.readsColor(); | 154 fBatch.fColorIgnored = !opt.readsColor(); |
155 fBatch.fColor = fGeoData[0].fColor; | 155 fBatch.fColor = fGeoData[0].fColor; |
156 fBatch.fUsesLocalCoords = opt.readsLocalCoords(); | 156 fBatch.fUsesLocalCoords = opt.readsLocalCoords(); |
157 fBatch.fCoverageIgnored = !opt.readsCoverage(); | 157 fBatch.fCoverageIgnored = !opt.readsCoverage(); |
158 fBatch.fLinesOnly = SkPath::kLine_SegmentMask == fGeoData[0].fPath.getSe
gmentMasks(); | 158 fBatch.fLinesOnly = SkPath::kLine_SegmentMask == fGeoData[0].fPath.getSe
gmentMasks(); |
159 fBatch.fCanTweakAlphaForCoverage = opt.canTweakAlphaForCoverage(); | 159 fBatch.fCanTweakAlphaForCoverage = opt.canTweakAlphaForCoverage(); |
160 } | 160 } |
161 | 161 |
162 void draw(GrVertexBatch::Target* target, const GrPipeline* pipeline, int ver
texCount, | 162 void draw(GrVertexBatch::Target* target, const GrPipeline* pipeline, int ver
texCount, |
163 size_t vertexStride, void* vertices, int indexCount, uint16_t* indic
es) { | 163 size_t vertexStride, void* vertices, int indexCount, uint16_t* indic
es) { |
164 if (vertexCount == 0 || indexCount == 0) { | 164 if (vertexCount == 0 || indexCount == 0) { |
165 return; | 165 return; |
166 } | 166 } |
167 const GrVertexBuffer* vertexBuffer; | 167 const GrVertexBuffer* vertexBuffer; |
168 GrVertices info; | 168 GrVertices info; |
169 int firstVertex; | 169 int firstVertex; |
170 void* verts = target->makeVertexSpace(vertexStride, vertexCount, &vertex
Buffer, | 170 void* verts = target->makeVertexSpace(vertexStride, vertexCount, &vertex
Buffer, |
171 &firstVertex); | 171 &firstVertex); |
172 if (!verts) { | 172 if (!verts) { |
173 SkDebugf("Could not allocate vertices\n"); | 173 SkDebugf("Could not allocate vertices\n"); |
174 return; | 174 return; |
175 } | 175 } |
176 memcpy(verts, vertices, vertexCount * vertexStride); | 176 memcpy(verts, vertices, vertexCount * vertexStride); |
177 | 177 |
178 const GrIndexBuffer* indexBuffer; | 178 const GrIndexBuffer* indexBuffer; |
179 int firstIndex; | 179 int firstIndex; |
180 uint16_t* idxs = target->makeIndexSpace(indexCount, &indexBuffer, &first
Index); | 180 uint16_t* idxs = target->makeIndexSpace(indexCount, &indexBuffer, &first
Index); |
181 if (!idxs) { | 181 if (!idxs) { |
182 SkDebugf("Could not allocate indices\n"); | 182 SkDebugf("Could not allocate indices\n"); |
183 return; | 183 return; |
184 } | 184 } |
185 memcpy(idxs, indices, indexCount * sizeof(uint16_t)); | 185 memcpy(idxs, indices, indexCount * sizeof(uint16_t)); |
186 info.initIndexed(kTriangles_GrPrimitiveType, vertexBuffer, indexBuffer,
firstVertex, | 186 info.initIndexed(kTriangles_GrPrimitiveType, vertexBuffer, indexBuffer,
firstVertex, |
187 firstIndex, vertexCount, indexCount); | 187 firstIndex, vertexCount, indexCount); |
188 target->draw(info); | 188 target->draw(info); |
189 } | 189 } |
190 | 190 |
191 void onPrepareDraws(Target* target) override { | 191 void onPrepareDraws(Target* target) override { |
192 bool canTweakAlphaForCoverage = this->canTweakAlphaForCoverage(); | 192 bool canTweakAlphaForCoverage = this->canTweakAlphaForCoverage(); |
193 | 193 |
194 // Setup GrGeometryProcessor | 194 // Setup GrGeometryProcessor |
195 SkAutoTUnref<const GrGeometryProcessor> gp(create_fill_gp(canTweakAlphaF
orCoverage, | 195 SkAutoTUnref<const GrGeometryProcessor> gp(create_fill_gp(canTweakAlphaF
orCoverage, |
196 this->viewMatr
ix(), | 196 this->viewMatr
ix(), |
197 this->usesLoca
lCoords(), | 197 this->usesLoca
lCoords(), |
198 this->coverage
Ignored())); | 198 this->coverage
Ignored())); |
199 if (!gp) { | 199 if (!gp) { |
200 SkDebugf("Couldn't create a GrGeometryProcessor\n"); | 200 SkDebugf("Couldn't create a GrGeometryProcessor\n"); |
201 return; | 201 return; |
202 } | 202 } |
203 | 203 |
204 target->initDraw(gp, this->pipeline()); | 204 target->initDraw(gp, this->pipeline()); |
205 | 205 |
206 size_t vertexStride = gp->getVertexStride(); | 206 size_t vertexStride = gp->getVertexStride(); |
207 | 207 |
208 SkASSERT(canTweakAlphaForCoverage ? | 208 SkASSERT(canTweakAlphaForCoverage ? |
209 vertexStride == sizeof(GrDefaultGeoProcFactory::PositionColorAt
tr) : | 209 vertexStride == sizeof(GrDefaultGeoProcFactory::PositionColorAt
tr) : |
210 vertexStride == sizeof(GrDefaultGeoProcFactory::PositionColorCo
verageAttr)); | 210 vertexStride == sizeof(GrDefaultGeoProcFactory::PositionColorCo
verageAttr)); |
211 | 211 |
212 int instanceCount = fGeoData.count(); | 212 int instanceCount = fGeoData.count(); |
213 | 213 |
214 int vertexCount = 0; | 214 int vertexCount = 0; |
215 int indexCount = 0; | 215 int indexCount = 0; |
216 int maxVertices = DEFAULT_BUFFER_SIZE; | 216 int maxVertices = DEFAULT_BUFFER_SIZE; |
217 int maxIndices = DEFAULT_BUFFER_SIZE; | 217 int maxIndices = DEFAULT_BUFFER_SIZE; |
218 uint8_t* vertices = (uint8_t*) malloc(maxVertices * vertexStride); | 218 uint8_t* vertices = (uint8_t*) sk_malloc_throw(maxVertices * vertexStrid
e); |
219 uint16_t* indices = (uint16_t*) malloc(maxIndices * sizeof(uint16_t)); | 219 uint16_t* indices = (uint16_t*) sk_malloc_throw(maxIndices * sizeof(uint
16_t)); |
220 for (int i = 0; i < instanceCount; i++) { | 220 for (int i = 0; i < instanceCount; i++) { |
221 Geometry& args = fGeoData[i]; | 221 Geometry& args = fGeoData[i]; |
222 GrAAConvexTessellator tess(args.fStrokeWidth, args.fJoin, args.fMite
rLimit); | 222 GrAAConvexTessellator tess(args.fStrokeWidth, args.fJoin, args.fMite
rLimit); |
223 | 223 |
224 if (!tess.tessellate(args.fViewMatrix, args.fPath)) { | 224 if (!tess.tessellate(args.fViewMatrix, args.fPath)) { |
225 continue; | 225 continue; |
226 } | 226 } |
227 | 227 |
228 int currentIndices = tess.numIndices(); | 228 int currentIndices = tess.numIndices(); |
229 SkASSERT(currentIndices <= UINT16_MAX); | 229 SkASSERT(currentIndices <= UINT16_MAX); |
230 if (indexCount + currentIndices > UINT16_MAX) { | 230 if (indexCount + currentIndices > UINT16_MAX) { |
231 // if we added the current instance, we would overflow the indic
es we can store in a | 231 // if we added the current instance, we would overflow the indic
es we can store in a |
232 // uint16_t. Draw what we've got so far and reset. | 232 // uint16_t. Draw what we've got so far and reset. |
233 draw(target, this->pipeline(), vertexCount, vertexStride, vertic
es, indexCount, | 233 draw(target, this->pipeline(), vertexCount, vertexStride, vertic
es, indexCount, |
234 indices); | 234 indices); |
235 vertexCount = 0; | 235 vertexCount = 0; |
236 indexCount = 0; | 236 indexCount = 0; |
237 } | 237 } |
238 int currentVertices = tess.numPts(); | 238 int currentVertices = tess.numPts(); |
239 if (vertexCount + currentVertices > maxVertices) { | 239 if (vertexCount + currentVertices > maxVertices) { |
240 maxVertices = SkTMax(vertexCount + currentVertices, maxVertices
* 2); | 240 maxVertices = SkTMax(vertexCount + currentVertices, maxVertices
* 2); |
241 vertices = (uint8_t*) realloc(vertices, maxVertices * vertexStri
de); | 241 vertices = (uint8_t*) sk_realloc_throw(vertices, maxVertices * v
ertexStride); |
242 } | 242 } |
243 if (indexCount + currentIndices > maxIndices) { | 243 if (indexCount + currentIndices > maxIndices) { |
244 maxIndices = SkTMax(indexCount + currentIndices, maxIndices * 2)
; | 244 maxIndices = SkTMax(indexCount + currentIndices, maxIndices * 2)
; |
245 indices = (uint16_t*) realloc(indices, maxIndices * sizeof(uint1
6_t)); | 245 indices = (uint16_t*) sk_realloc_throw(indices, maxIndices * siz
eof(uint16_t)); |
246 } | 246 } |
247 | 247 |
248 extract_verts(tess, vertices + vertexStride * vertexCount, vertexStr
ide, args.fColor, | 248 extract_verts(tess, vertices + vertexStride * vertexCount, vertexStr
ide, args.fColor, |
249 vertexCount, indices + indexCount, canTweakAlphaForCoverage)
; | 249 vertexCount, indices + indexCount, canTweakAlphaForCoverage)
; |
250 vertexCount += currentVertices; | 250 vertexCount += currentVertices; |
251 indexCount += currentIndices; | 251 indexCount += currentIndices; |
252 } | 252 } |
253 draw(target, this->pipeline(), vertexCount, vertexStride, vertices, inde
xCount, | 253 draw(target, this->pipeline(), vertexCount, vertexStride, vertices, inde
xCount, |
254 indices); | 254 indices); |
255 free(vertices); | 255 sk_free(vertices); |
256 free(indices); | 256 sk_free(indices); |
257 } | 257 } |
258 | 258 |
259 SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; } | 259 SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; } |
260 | 260 |
261 AAFlatteningConvexPathBatch(const Geometry& geometry) { | 261 AAFlatteningConvexPathBatch(const Geometry& geometry) { |
262 this->initClassID<AAFlatteningConvexPathBatch>(); | 262 this->initClassID<AAFlatteningConvexPathBatch>(); |
263 fGeoData.push_back(geometry); | 263 fGeoData.push_back(geometry); |
264 | 264 |
265 // compute bounds | 265 // compute bounds |
266 fBounds = geometry.fPath.getBounds(); | 266 fBounds = geometry.fPath.getBounds(); |
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336 DRAW_BATCH_TEST_DEFINE(AAFlatteningConvexPathBatch) { | 336 DRAW_BATCH_TEST_DEFINE(AAFlatteningConvexPathBatch) { |
337 AAFlatteningConvexPathBatch::Geometry geometry; | 337 AAFlatteningConvexPathBatch::Geometry geometry; |
338 geometry.fColor = GrRandomColor(random); | 338 geometry.fColor = GrRandomColor(random); |
339 geometry.fViewMatrix = GrTest::TestMatrixInvertible(random); | 339 geometry.fViewMatrix = GrTest::TestMatrixInvertible(random); |
340 geometry.fPath = GrTest::TestPathConvex(random); | 340 geometry.fPath = GrTest::TestPathConvex(random); |
341 | 341 |
342 return AAFlatteningConvexPathBatch::Create(geometry); | 342 return AAFlatteningConvexPathBatch::Create(geometry); |
343 } | 343 } |
344 | 344 |
345 #endif | 345 #endif |
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