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1 /* | 1 /* |
2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "GrAARectRenderer.h" | 8 #include "GrAARectRenderer.h" |
9 #include "GrBatch.h" | |
10 #include "GrBatchBuffer.h" | |
11 #include "GrBufferAllocPool.h" | |
9 #include "GrDefaultGeoProcFactory.h" | 12 #include "GrDefaultGeoProcFactory.h" |
10 #include "GrGeometryProcessor.h" | 13 #include "GrGeometryProcessor.h" |
11 #include "GrGpu.h" | 14 #include "GrGpu.h" |
12 #include "GrInvariantOutput.h" | 15 #include "GrInvariantOutput.h" |
13 #include "SkColorPriv.h" | 16 #include "SkColorPriv.h" |
14 #include "gl/GrGLProcessor.h" | 17 #include "gl/GrGLProcessor.h" |
15 #include "gl/GrGLGeometryProcessor.h" | 18 #include "gl/GrGLGeometryProcessor.h" |
16 #include "gl/builders/GrGLProgramBuilder.h" | 19 #include "gl/builders/GrGLProgramBuilder.h" |
17 | 20 |
18 /////////////////////////////////////////////////////////////////////////////// | 21 /////////////////////////////////////////////////////////////////////////////// |
19 | 22 |
20 namespace { | |
21 // Should the coverage be multiplied into the color attrib or use a separate att rib. | |
22 enum CoverageAttribType { | |
23 kUseColor_CoverageAttribType, | |
24 kUseCoverage_CoverageAttribType, | |
25 }; | |
26 } | |
27 | |
28 static const GrGeometryProcessor* create_rect_gp(const GrPipelineBuilder& pipeli neBuilder, | |
29 GrColor color, | |
30 CoverageAttribType* type, | |
31 const SkMatrix& localMatrix) { | |
32 uint32_t flags = GrDefaultGeoProcFactory::kColor_GPType; | |
33 const GrGeometryProcessor* gp; | |
34 if (pipelineBuilder.canTweakAlphaForCoverage()) { | |
35 gp = GrDefaultGeoProcFactory::Create(flags, color, SkMatrix::I(), localM atrix); | |
36 SkASSERT(gp->getVertexStride() == sizeof(GrDefaultGeoProcFactory::Positi onColorAttr)); | |
37 *type = kUseColor_CoverageAttribType; | |
38 } else { | |
39 flags |= GrDefaultGeoProcFactory::kCoverage_GPType; | |
40 gp = GrDefaultGeoProcFactory::Create(flags, color, SkMatrix::I(), localM atrix, | |
41 GrColorIsOpaque(color)); | |
42 SkASSERT(gp->getVertexStride()==sizeof(GrDefaultGeoProcFactory::Position ColorCoverageAttr)); | |
43 *type = kUseCoverage_CoverageAttribType; | |
44 } | |
45 return gp; | |
46 } | |
47 | |
48 static void set_inset_fan(SkPoint* pts, size_t stride, | 23 static void set_inset_fan(SkPoint* pts, size_t stride, |
49 const SkRect& r, SkScalar dx, SkScalar dy) { | 24 const SkRect& r, SkScalar dx, SkScalar dy) { |
50 pts->setRectFan(r.fLeft + dx, r.fTop + dy, | 25 pts->setRectFan(r.fLeft + dx, r.fTop + dy, |
51 r.fRight - dx, r.fBottom - dy, stride); | 26 r.fRight - dx, r.fBottom - dy, stride); |
52 } | 27 } |
53 | 28 |
54 void GrAARectRenderer::reset() { | |
55 SkSafeSetNull(fAAFillRectIndexBuffer); | |
56 SkSafeSetNull(fAAMiterStrokeRectIndexBuffer); | |
57 SkSafeSetNull(fAABevelStrokeRectIndexBuffer); | |
58 } | |
59 | |
60 static const uint16_t gFillAARectIdx[] = { | 29 static const uint16_t gFillAARectIdx[] = { |
61 0, 1, 5, 5, 4, 0, | 30 0, 1, 5, 5, 4, 0, |
62 1, 2, 6, 6, 5, 1, | 31 1, 2, 6, 6, 5, 1, |
63 2, 3, 7, 7, 6, 2, | 32 2, 3, 7, 7, 6, 2, |
64 3, 0, 4, 4, 7, 3, | 33 3, 0, 4, 4, 7, 3, |
65 4, 5, 6, 6, 7, 4, | 34 4, 5, 6, 6, 7, 4, |
66 }; | 35 }; |
67 | 36 |
68 static const int kIndicesPerAAFillRect = SK_ARRAY_COUNT(gFillAARectIdx); | 37 static const int kIndicesPerAAFillRect = SK_ARRAY_COUNT(gFillAARectIdx); |
69 static const int kVertsPerAAFillRect = 8; | 38 static const int kVertsPerAAFillRect = 8; |
70 static const int kNumAAFillRectsInIndexBuffer = 256; | 39 static const int kNumAAFillRectsInIndexBuffer = 256; |
71 | 40 |
41 static const GrGeometryProcessor* create_fill_rect_gp(bool tweakAlphaForCoverage , | |
42 const SkMatrix& localMatri x) { | |
43 uint32_t flags = GrDefaultGeoProcFactory::kColor_GPType; | |
44 const GrGeometryProcessor* gp; | |
45 if (tweakAlphaForCoverage) { | |
46 gp = GrDefaultGeoProcFactory::Create(flags, GrColor_WHITE, SkMatrix::I() , localMatrix, | |
47 false, 0xff); | |
48 } else { | |
49 flags |= GrDefaultGeoProcFactory::kCoverage_GPType; | |
50 gp = GrDefaultGeoProcFactory::Create(flags, GrColor_WHITE, SkMatrix::I() , localMatrix, | |
51 false, 0xff); | |
52 } | |
53 return gp; | |
54 } | |
55 | |
56 class AAFillRectBatch : public GrBatch { | |
57 public: | |
58 struct Geometry { | |
59 GrColor fColor; | |
60 SkMatrix fViewMatrix; | |
61 SkRect fRect; | |
62 SkRect fDevRect; | |
63 }; | |
64 | |
65 static GrBatch* Create(const Geometry& geometry, const GrIndexBuffer* indexB uffer) { | |
66 return SkNEW_ARGS(AAFillRectBatch, (geometry, indexBuffer)); | |
67 } | |
68 | |
69 const char* name() const SK_OVERRIDE { return "AAFillRectBatch"; } | |
70 | |
71 void getInvariantOutputColor(GrInitInvariantOutput* out, | |
72 const GrBatchOpt& batchOpt) const SK_OVERRIDE { | |
73 // When this is called on a batch, there is only one geometry bundle | |
74 if (!batchOpt.fCanTweakAlphaForCoverage && GrColorIsOpaque(fGeoData[0].f Color)) { | |
75 out->setUnknownOpaqueFourComponents(); | |
76 } else { | |
77 out->setUnknownFourComponents(); | |
78 } | |
79 } | |
80 | |
81 void getInvariantOutputCoverage(GrInitInvariantOutput* out, | |
82 const GrBatchOpt& batchOpt) const SK_OVERRID E { | |
83 if (batchOpt.fCanTweakAlphaForCoverage) { | |
84 // uniform coverage | |
85 out->setKnownSingleComponent(0xff); | |
86 } else { | |
87 out->setUnknownSingleComponent(); | |
88 } | |
89 } | |
90 | |
91 void initBatchOpt(const GrBatchOpt& batchOpt) { | |
92 fBatchOpt = batchOpt; | |
93 } | |
94 | |
95 void initBatchTracker(const GrPipelineInfo& init) SK_OVERRIDE { | |
96 // Handle any color overrides | |
97 if (init.fColorIgnored) { | |
98 fGeoData[0].fColor = GrColor_ILLEGAL; | |
99 } else if (GrColor_ILLEGAL != init.fOverrideColor) { | |
100 fGeoData[0].fColor = init.fOverrideColor; | |
101 } | |
102 | |
103 // setup batch properties | |
104 fBatch.fColorIgnored = init.fColorIgnored; | |
105 fBatch.fColor = fGeoData[0].fColor; | |
106 fBatch.fUsesLocalCoords = init.fUsesLocalCoords; | |
107 fBatch.fCoverageIgnored = init.fCoverageIgnored; | |
108 } | |
109 | |
110 void generateGeometry(GrBatchTarget* batchTarget, const GrPipeline* pipeline ) SK_OVERRIDE { | |
111 bool canTweakAlphaForCoverage = this->canTweakAlphaForCoverage(); | |
112 | |
113 SkMatrix localMatrix; | |
114 if (!this->viewMatrix().invert(&localMatrix)) { | |
115 SkDebugf("Cannot invert\n"); | |
116 return; | |
117 } | |
118 | |
119 const GrGeometryProcessor* gp = create_fill_rect_gp(canTweakAlphaForCove rage, | |
120 localMatrix); | |
121 | |
122 batchTarget->initDraw(gp, pipeline); | |
123 gp->unref(); | |
124 | |
125 // TODO this is hacky, but the only way we have to initialize the GP is to use the | |
126 // GrPipelineInfo struct so we can generate the correct shader. Once we have GrBatch | |
127 // everywhere we can remove this nastiness | |
128 GrPipelineInfo init; | |
129 init.fColorIgnored = fBatch.fColorIgnored; | |
130 init.fOverrideColor = GrColor_ILLEGAL; | |
131 init.fCoverageIgnored = fBatch.fCoverageIgnored; | |
132 init.fUsesLocalCoords = this->usesLocalCoords(); | |
133 gp->initBatchTracker(batchTarget->currentBatchTracker(), init); | |
134 | |
135 size_t vertexStride = gp->getVertexStride(); | |
136 | |
137 SkASSERT(canTweakAlphaForCoverage ? | |
138 vertexStride == sizeof(GrDefaultGeoProcFactory::PositionColorAt tr) : | |
139 vertexStride == sizeof(GrDefaultGeoProcFactory::PositionColorCo verageAttr)); | |
140 | |
141 int instanceCount = fGeoData.count(); | |
142 int vertexCount = kVertsPerAAFillRect * instanceCount; | |
143 | |
144 const GrVertexBuffer* vertexBuffer; | |
145 int firstVertex; | |
146 | |
147 void *vertices = batchTarget->vertexPool()->makeSpace(vertexStride, | |
148 vertexCount, | |
149 &vertexBuffer, | |
150 &firstVertex); | |
151 | |
152 for (int i = 0; i < instanceCount; i++) { | |
153 const Geometry& args = fGeoData[i]; | |
154 this->generateAAFillRectGeometry(vertices, | |
155 i * kVertsPerAAFillRect * vertexStride, | |
156 vertexStride, | |
157 args.fColor, | |
158 args.fViewMatrix, | |
159 args.fRect, | |
160 args.fDevRect, | |
161 canTweakAlphaForCoverage); | |
162 } | |
163 | |
164 GrDrawTarget::DrawInfo drawInfo; | |
165 drawInfo.setPrimitiveType(kTriangles_GrPrimitiveType); | |
166 drawInfo.setStartVertex(0); | |
167 drawInfo.setStartIndex(0); | |
168 drawInfo.setVerticesPerInstance(kVertsPerAAFillRect); | |
169 drawInfo.setIndicesPerInstance(kIndicesPerAAFillRect); | |
170 drawInfo.adjustStartVertex(firstVertex); | |
171 drawInfo.setVertexBuffer(vertexBuffer); | |
172 drawInfo.setIndexBuffer(fIndexBuffer); | |
173 | |
174 int maxInstancesPerDraw = kNumAAFillRectsInIndexBuffer; | |
175 | |
176 while (instanceCount) { | |
177 drawInfo.setInstanceCount(SkTMin(instanceCount, maxInstancesPerDraw) ); | |
178 drawInfo.setVertexCount(drawInfo.instanceCount() * drawInfo.vertices PerInstance()); | |
179 drawInfo.setIndexCount(drawInfo.instanceCount() * drawInfo.indicesPe rInstance()); | |
180 | |
181 batchTarget->draw(drawInfo); | |
182 | |
183 drawInfo.setStartVertex(drawInfo.startVertex() + drawInfo.vertexCoun t()); | |
184 instanceCount -= drawInfo.instanceCount(); | |
185 } | |
186 } | |
187 | |
188 SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; } | |
189 | |
190 private: | |
191 AAFillRectBatch(const Geometry& geometry, const GrIndexBuffer* indexBuffer) | |
192 : fIndexBuffer(indexBuffer) { | |
193 this->initClassID<AAFillRectBatch>(); | |
194 fGeoData.push_back(geometry); | |
195 } | |
196 | |
197 GrColor color() const { return fBatch.fColor; } | |
198 bool usesLocalCoords() const { return fBatch.fUsesLocalCoords; } | |
199 bool canTweakAlphaForCoverage() const { return fBatchOpt.fCanTweakAlphaForCo verage; } | |
200 bool colorIgnored() const { return fBatch.fColorIgnored; } | |
201 const SkMatrix& viewMatrix() const { return fGeoData[0].fViewMatrix; } | |
202 | |
203 bool onCombineIfPossible(GrBatch* t) SK_OVERRIDE { | |
204 AAFillRectBatch* that = t->cast<AAFillRectBatch>(); | |
205 if (this->canTweakAlphaForCoverage() != that->canTweakAlphaForCoverage() ) { | |
206 return false; | |
207 } | |
208 | |
209 if (this->colorIgnored() != that->colorIgnored()) { | |
210 return false; | |
211 } | |
212 | |
213 if (this->usesLocalCoords() != that->usesLocalCoords()) { | |
214 return false; | |
215 } | |
216 | |
217 // We apply the viewmatrix to the rect points on the cpu. However, if t he pipeline uses | |
218 // local coords then we won't be able to batch. We could actually uploa d the viewmatrix | |
219 // using vertex attributes in these cases, but haven't investigated that | |
220 if (this->usesLocalCoords() && !this->viewMatrix().cheapEqualTo(that->vi ewMatrix())) { | |
221 return false; | |
222 } | |
223 | |
224 if (this->color() != that->color()) { | |
225 fBatch.fColor = GrColor_ILLEGAL; | |
226 } | |
227 fGeoData.push_back_n(that->geoData()->count(), that->geoData()->begin()) ; | |
228 return true; | |
229 } | |
230 | |
231 void generateAAFillRectGeometry(void* vertices, | |
232 uint32_t offset, | |
233 uint32_t vertexStride, | |
234 GrColor color, | |
235 const SkMatrix& viewMatrix, | |
236 const SkRect& rect, | |
237 const SkRect& devRect, | |
238 bool tweakAlphaForCoverage) const { | |
239 intptr_t verts = reinterpret_cast<intptr_t>(vertices) + offset; | |
240 | |
241 SkPoint* fan0Pos = reinterpret_cast<SkPoint*>(verts); | |
242 SkPoint* fan1Pos = reinterpret_cast<SkPoint*>(verts + 4 * vertexStride); | |
243 | |
244 SkScalar inset = SkMinScalar(devRect.width(), SK_Scalar1); | |
245 inset = SK_ScalarHalf * SkMinScalar(inset, devRect.height()); | |
246 | |
247 if (viewMatrix.rectStaysRect()) { | |
248 set_inset_fan(fan0Pos, vertexStride, devRect, -SK_ScalarHalf, -SK_Sc alarHalf); | |
249 set_inset_fan(fan1Pos, vertexStride, devRect, inset, inset); | |
250 } else { | |
251 // compute transformed (1, 0) and (0, 1) vectors | |
252 SkVector vec[2] = { | |
253 { viewMatrix[SkMatrix::kMScaleX], viewMatrix[SkMatrix::kMSkewY] }, | |
254 { viewMatrix[SkMatrix::kMSkewX], viewMatrix[SkMatrix::kMScaleY] } | |
255 }; | |
256 | |
257 vec[0].normalize(); | |
258 vec[0].scale(SK_ScalarHalf); | |
259 vec[1].normalize(); | |
260 vec[1].scale(SK_ScalarHalf); | |
261 | |
262 // create the rotated rect | |
263 fan0Pos->setRectFan(rect.fLeft, rect.fTop, | |
264 rect.fRight, rect.fBottom, vertexStride); | |
265 viewMatrix.mapPointsWithStride(fan0Pos, vertexStride, 4); | |
266 | |
267 // Now create the inset points and then outset the original | |
268 // rotated points | |
269 | |
270 // TL | |
271 *((SkPoint*)((intptr_t)fan1Pos + 0 * vertexStride)) = | |
272 *((SkPoint*)((intptr_t)fan0Pos + 0 * vertexStride)) + vec[0] + v ec[1]; | |
273 *((SkPoint*)((intptr_t)fan0Pos + 0 * vertexStride)) -= vec[0] + vec[ 1]; | |
274 // BL | |
275 *((SkPoint*)((intptr_t)fan1Pos + 1 * vertexStride)) = | |
276 *((SkPoint*)((intptr_t)fan0Pos + 1 * vertexStride)) + vec[0] - v ec[1]; | |
277 *((SkPoint*)((intptr_t)fan0Pos + 1 * vertexStride)) -= vec[0] - vec[ 1]; | |
278 // BR | |
279 *((SkPoint*)((intptr_t)fan1Pos + 2 * vertexStride)) = | |
280 *((SkPoint*)((intptr_t)fan0Pos + 2 * vertexStride)) - vec[0] - v ec[1]; | |
281 *((SkPoint*)((intptr_t)fan0Pos + 2 * vertexStride)) += vec[0] + vec[ 1]; | |
282 // TR | |
283 *((SkPoint*)((intptr_t)fan1Pos + 3 * vertexStride)) = | |
284 *((SkPoint*)((intptr_t)fan0Pos + 3 * vertexStride)) - vec[0] + v ec[1]; | |
285 *((SkPoint*)((intptr_t)fan0Pos + 3 * vertexStride)) += vec[0] - vec[ 1]; | |
286 } | |
287 | |
288 // Make verts point to vertex color and then set all the color and cover age vertex attrs | |
289 // values. | |
290 verts += sizeof(SkPoint); | |
291 for (int i = 0; i < 4; ++i) { | |
292 if (tweakAlphaForCoverage) { | |
293 *reinterpret_cast<GrColor*>(verts + i * vertexStride) = 0; | |
294 } else { | |
295 *reinterpret_cast<GrColor*>(verts + i * vertexStride) = color; | |
296 *reinterpret_cast<float*>(verts + i * vertexStride + sizeof(GrCo lor)) = 0; | |
297 } | |
298 } | |
299 | |
300 int scale; | |
301 if (inset < SK_ScalarHalf) { | |
302 scale = SkScalarFloorToInt(512.0f * inset / (inset + SK_ScalarHalf)) ; | |
303 SkASSERT(scale >= 0 && scale <= 255); | |
304 } else { | |
305 scale = 0xff; | |
306 } | |
307 | |
308 verts += 4 * vertexStride; | |
309 | |
310 float innerCoverage = GrNormalizeByteToFloat(scale); | |
311 GrColor scaledColor = (0xff == scale) ? color : SkAlphaMulQ(color, scale ); | |
312 | |
313 for (int i = 0; i < 4; ++i) { | |
314 if (tweakAlphaForCoverage) { | |
315 *reinterpret_cast<GrColor*>(verts + i * vertexStride) = scaledCo lor; | |
316 } else { | |
317 *reinterpret_cast<GrColor*>(verts + i * vertexStride) = color; | |
318 *reinterpret_cast<float*>(verts + i * vertexStride + | |
319 sizeof(GrColor)) = innerCoverage; | |
320 } | |
321 } | |
322 } | |
323 | |
324 struct BatchTracker { | |
325 GrColor fColor; | |
326 bool fUsesLocalCoords; | |
327 bool fColorIgnored; | |
328 bool fCoverageIgnored; | |
329 }; | |
330 | |
331 GrBatchOpt fBatchOpt; | |
332 BatchTracker fBatch; | |
333 const GrIndexBuffer* fIndexBuffer; | |
334 SkSTArray<1, Geometry, true> fGeoData; | |
335 }; | |
336 | |
337 namespace { | |
338 // Should the coverage be multiplied into the color attrib or use a separate att rib. | |
339 enum CoverageAttribType { | |
340 kUseColor_CoverageAttribType, | |
341 kUseCoverage_CoverageAttribType, | |
342 }; | |
343 } | |
344 | |
345 void GrAARectRenderer::reset() { | |
346 SkSafeSetNull(fAAFillRectIndexBuffer); | |
347 SkSafeSetNull(fAAMiterStrokeRectIndexBuffer); | |
348 SkSafeSetNull(fAABevelStrokeRectIndexBuffer); | |
349 } | |
350 | |
72 static const uint16_t gMiterStrokeAARectIdx[] = { | 351 static const uint16_t gMiterStrokeAARectIdx[] = { |
73 0 + 0, 1 + 0, 5 + 0, 5 + 0, 4 + 0, 0 + 0, | 352 0 + 0, 1 + 0, 5 + 0, 5 + 0, 4 + 0, 0 + 0, |
74 1 + 0, 2 + 0, 6 + 0, 6 + 0, 5 + 0, 1 + 0, | 353 1 + 0, 2 + 0, 6 + 0, 6 + 0, 5 + 0, 1 + 0, |
75 2 + 0, 3 + 0, 7 + 0, 7 + 0, 6 + 0, 2 + 0, | 354 2 + 0, 3 + 0, 7 + 0, 7 + 0, 6 + 0, 2 + 0, |
76 3 + 0, 0 + 0, 4 + 0, 4 + 0, 7 + 0, 3 + 0, | 355 3 + 0, 0 + 0, 4 + 0, 4 + 0, 7 + 0, 3 + 0, |
77 | 356 |
78 0 + 4, 1 + 4, 5 + 4, 5 + 4, 4 + 4, 0 + 4, | 357 0 + 4, 1 + 4, 5 + 4, 5 + 4, 4 + 4, 0 + 4, |
79 1 + 4, 2 + 4, 6 + 4, 6 + 4, 5 + 4, 1 + 4, | 358 1 + 4, 2 + 4, 6 + 4, 6 + 4, 5 + 4, 1 + 4, |
80 2 + 4, 3 + 4, 7 + 4, 7 + 4, 6 + 4, 2 + 4, | 359 2 + 4, 3 + 4, 7 + 4, 7 + 4, 6 + 4, 2 + 4, |
81 3 + 4, 0 + 4, 4 + 4, 4 + 4, 7 + 4, 3 + 4, | 360 3 + 4, 0 + 4, 4 + 4, 4 + 4, 7 + 4, 3 + 4, |
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177 return fAABevelStrokeRectIndexBuffer; | 456 return fAABevelStrokeRectIndexBuffer; |
178 } | 457 } |
179 } | 458 } |
180 | 459 |
181 void GrAARectRenderer::geometryFillAARect(GrDrawTarget* target, | 460 void GrAARectRenderer::geometryFillAARect(GrDrawTarget* target, |
182 GrPipelineBuilder* pipelineBuilder, | 461 GrPipelineBuilder* pipelineBuilder, |
183 GrColor color, | 462 GrColor color, |
184 const SkMatrix& viewMatrix, | 463 const SkMatrix& viewMatrix, |
185 const SkRect& rect, | 464 const SkRect& rect, |
186 const SkRect& devRect) { | 465 const SkRect& devRect) { |
187 GrPipelineBuilder::AutoRestoreEffects are(pipelineBuilder); | |
188 | |
189 SkMatrix localMatrix; | |
190 if (!viewMatrix.invert(&localMatrix)) { | |
191 SkDebugf("Cannot invert\n"); | |
192 return; | |
193 } | |
194 | |
195 CoverageAttribType type; | |
196 SkAutoTUnref<const GrGeometryProcessor> gp(create_rect_gp(*pipelineBuilder, color, &type, | |
197 localMatrix)); | |
198 | |
199 size_t vertexStride = gp->getVertexStride(); | |
200 GrDrawTarget::AutoReleaseGeometry geo(target, 8, vertexStride, 0); | |
201 if (!geo.succeeded()) { | |
202 SkDebugf("Failed to get space for vertices!\n"); | |
203 return; | |
204 } | |
205 | |
206 if (NULL == fAAFillRectIndexBuffer) { | 466 if (NULL == fAAFillRectIndexBuffer) { |
207 fAAFillRectIndexBuffer = fGpu->createInstancedIndexBuffer(gFillAARectIdx , | 467 fAAFillRectIndexBuffer = fGpu->createInstancedIndexBuffer(gFillAARectIdx , |
208 kIndicesPerAAF illRect, | 468 kIndicesPerAAF illRect, |
209 kNumAAFillRect sInIndexBuffer, | 469 kNumAAFillRect sInIndexBuffer, |
210 kVertsPerAAFil lRect); | 470 kVertsPerAAFil lRect); |
211 } | 471 } |
212 GrIndexBuffer* indexBuffer = fAAFillRectIndexBuffer; | |
213 if (NULL == indexBuffer) { | |
214 SkDebugf("Failed to create index buffer!\n"); | |
215 return; | |
216 } | |
217 | 472 |
218 intptr_t verts = reinterpret_cast<intptr_t>(geo.vertices()); | 473 AAFillRectBatch::Geometry geometry; |
474 geometry.fRect = rect; | |
475 geometry.fViewMatrix = viewMatrix; | |
476 geometry.fDevRect = devRect; | |
477 geometry.fColor = color; | |
219 | 478 |
220 SkPoint* fan0Pos = reinterpret_cast<SkPoint*>(verts); | 479 SkAutoTUnref<GrBatch> batch(AAFillRectBatch::Create(geometry, fAAFillRectInd exBuffer)); |
221 SkPoint* fan1Pos = reinterpret_cast<SkPoint*>(verts + 4 * vertexStride); | 480 target->drawBatch(pipelineBuilder, batch, kTriangles_GrPrimitiveType); |
joshualitt
2015/01/26 15:22:20
Brian, should I be passing in devrect?
| |
222 | |
223 SkScalar inset = SkMinScalar(devRect.width(), SK_Scalar1); | |
224 inset = SK_ScalarHalf * SkMinScalar(inset, devRect.height()); | |
225 | |
226 if (viewMatrix.rectStaysRect()) { | |
227 // Temporarily #if'ed out. We don't want to pass in the devRect but | |
228 // right now it is computed in GrContext::apply_aa_to_rect and we don't | |
229 // want to throw away the work | |
230 #if 0 | |
231 SkRect devRect; | |
232 combinedMatrix.mapRect(&devRect, rect); | |
233 #endif | |
234 | |
235 set_inset_fan(fan0Pos, vertexStride, devRect, -SK_ScalarHalf, -SK_Scalar Half); | |
236 set_inset_fan(fan1Pos, vertexStride, devRect, inset, inset); | |
237 } else { | |
238 // compute transformed (1, 0) and (0, 1) vectors | |
239 SkVector vec[2] = { | |
240 { viewMatrix[SkMatrix::kMScaleX], viewMatrix[SkMatrix::kMSkewY] }, | |
241 { viewMatrix[SkMatrix::kMSkewX], viewMatrix[SkMatrix::kMScaleY] } | |
242 }; | |
243 | |
244 vec[0].normalize(); | |
245 vec[0].scale(SK_ScalarHalf); | |
246 vec[1].normalize(); | |
247 vec[1].scale(SK_ScalarHalf); | |
248 | |
249 // create the rotated rect | |
250 fan0Pos->setRectFan(rect.fLeft, rect.fTop, | |
251 rect.fRight, rect.fBottom, vertexStride); | |
252 viewMatrix.mapPointsWithStride(fan0Pos, vertexStride, 4); | |
253 | |
254 // Now create the inset points and then outset the original | |
255 // rotated points | |
256 | |
257 // TL | |
258 *((SkPoint*)((intptr_t)fan1Pos + 0 * vertexStride)) = | |
259 *((SkPoint*)((intptr_t)fan0Pos + 0 * vertexStride)) + vec[0] + vec[1 ]; | |
260 *((SkPoint*)((intptr_t)fan0Pos + 0 * vertexStride)) -= vec[0] + vec[1]; | |
261 // BL | |
262 *((SkPoint*)((intptr_t)fan1Pos + 1 * vertexStride)) = | |
263 *((SkPoint*)((intptr_t)fan0Pos + 1 * vertexStride)) + vec[0] - vec[1 ]; | |
264 *((SkPoint*)((intptr_t)fan0Pos + 1 * vertexStride)) -= vec[0] - vec[1]; | |
265 // BR | |
266 *((SkPoint*)((intptr_t)fan1Pos + 2 * vertexStride)) = | |
267 *((SkPoint*)((intptr_t)fan0Pos + 2 * vertexStride)) - vec[0] - vec[1 ]; | |
268 *((SkPoint*)((intptr_t)fan0Pos + 2 * vertexStride)) += vec[0] + vec[1]; | |
269 // TR | |
270 *((SkPoint*)((intptr_t)fan1Pos + 3 * vertexStride)) = | |
271 *((SkPoint*)((intptr_t)fan0Pos + 3 * vertexStride)) - vec[0] + vec[1 ]; | |
272 *((SkPoint*)((intptr_t)fan0Pos + 3 * vertexStride)) += vec[0] - vec[1]; | |
273 } | |
274 | |
275 // Make verts point to vertex color and then set all the color and coverage vertex attrs values. | |
276 verts += sizeof(SkPoint); | |
277 for (int i = 0; i < 4; ++i) { | |
278 if (kUseCoverage_CoverageAttribType == type) { | |
279 *reinterpret_cast<GrColor*>(verts + i * vertexStride) = color; | |
280 *reinterpret_cast<float*>(verts + i * vertexStride + sizeof(GrColor) ) = 0; | |
281 } else { | |
282 *reinterpret_cast<GrColor*>(verts + i * vertexStride) = 0; | |
283 } | |
284 } | |
285 | |
286 int scale; | |
287 if (inset < SK_ScalarHalf) { | |
288 scale = SkScalarFloorToInt(512.0f * inset / (inset + SK_ScalarHalf)); | |
289 SkASSERT(scale >= 0 && scale <= 255); | |
290 } else { | |
291 scale = 0xff; | |
292 } | |
293 | |
294 verts += 4 * vertexStride; | |
295 | |
296 float innerCoverage = GrNormalizeByteToFloat(scale); | |
297 GrColor scaledColor = (0xff == scale) ? color : SkAlphaMulQ(color, scale); | |
298 | |
299 for (int i = 0; i < 4; ++i) { | |
300 if (kUseCoverage_CoverageAttribType == type) { | |
301 *reinterpret_cast<GrColor*>(verts + i * vertexStride) = color; | |
302 *reinterpret_cast<float*>(verts + i * vertexStride + sizeof(GrColor) ) = innerCoverage; | |
303 } else { | |
304 *reinterpret_cast<GrColor*>(verts + i * vertexStride) = scaledColor; | |
305 } | |
306 } | |
307 | |
308 target->setIndexSourceToBuffer(indexBuffer); | |
309 target->drawIndexedInstances(pipelineBuilder, | |
310 gp, | |
311 kTriangles_GrPrimitiveType, | |
312 1, | |
313 kVertsPerAAFillRect, | |
314 kIndicesPerAAFillRect); | |
315 target->resetIndexSource(); | |
316 } | 481 } |
317 | 482 |
318 void GrAARectRenderer::strokeAARect(GrDrawTarget* target, | 483 void GrAARectRenderer::strokeAARect(GrDrawTarget* target, |
319 GrPipelineBuilder* pipelineBuilder, | 484 GrPipelineBuilder* pipelineBuilder, |
320 GrColor color, | 485 GrColor color, |
321 const SkMatrix& viewMatrix, | 486 const SkMatrix& viewMatrix, |
322 const SkRect& rect, | 487 const SkRect& rect, |
323 const SkRect& devRect, | 488 const SkRect& devRect, |
324 const SkStrokeRec& stroke) { | 489 const SkStrokeRec& stroke) { |
325 SkVector devStrokeSize; | 490 SkVector devStrokeSize; |
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375 SkRect devOutsideAssist(devRect); | 540 SkRect devOutsideAssist(devRect); |
376 | 541 |
377 // For bevel-stroke, use 2 SkRect instances(devOutside and devOutsideAssist) | 542 // For bevel-stroke, use 2 SkRect instances(devOutside and devOutsideAssist) |
378 // to draw the outer of the rect. Because there are 8 vertices on the outer | 543 // to draw the outer of the rect. Because there are 8 vertices on the outer |
379 // edge, while vertex number of inner edge is 4, the same as miter-stroke. | 544 // edge, while vertex number of inner edge is 4, the same as miter-stroke. |
380 if (!miterStroke) { | 545 if (!miterStroke) { |
381 devOutside.inset(0, ry); | 546 devOutside.inset(0, ry); |
382 devOutsideAssist.outset(0, ry); | 547 devOutsideAssist.outset(0, ry); |
383 } | 548 } |
384 | 549 |
385 this->geometryStrokeAARect(target, pipelineBuilder, color, viewMatrix, devOu tside, devOutsideAssist, | 550 this->geometryStrokeAARect(target, pipelineBuilder, color, viewMatrix, devOu tside, |
386 devInside, miterStroke); | 551 devOutsideAssist, devInside, miterStroke); |
387 } | 552 } |
388 | 553 |
554 static const GrGeometryProcessor* create_rect_gp(const GrPipelineBuilder& pipeln eBuilder, | |
555 GrColor color, | |
556 CoverageAttribType* type, | |
557 const SkMatrix& localMatrix) { | |
558 uint32_t flags = GrDefaultGeoProcFactory::kColor_GPType; | |
559 const GrGeometryProcessor* gp; | |
560 if (pipelneBuilder.canTweakAlphaForCoverage()) { | |
561 gp = GrDefaultGeoProcFactory::Create(flags, color, SkMatrix::I(), localM atrix); | |
562 SkASSERT(gp->getVertexStride() == sizeof(GrDefaultGeoProcFactory::Positi onColorAttr)); | |
563 *type = kUseColor_CoverageAttribType; | |
564 } else { | |
565 flags |= GrDefaultGeoProcFactory::kCoverage_GPType; | |
566 gp = GrDefaultGeoProcFactory::Create(flags, color, SkMatrix::I(), localM atrix, | |
567 GrColorIsOpaque(color)); | |
568 SkASSERT(gp->getVertexStride()==sizeof(GrDefaultGeoProcFactory::Position ColorCoverageAttr)); | |
569 *type = kUseCoverage_CoverageAttribType; | |
570 } | |
571 return gp; | |
572 } | |
573 | |
574 | |
389 void GrAARectRenderer::geometryStrokeAARect(GrDrawTarget* target, | 575 void GrAARectRenderer::geometryStrokeAARect(GrDrawTarget* target, |
390 GrPipelineBuilder* pipelineBuilder, | 576 GrPipelineBuilder* pipelineBuilder, |
391 GrColor color, | 577 GrColor color, |
392 const SkMatrix& viewMatrix, | 578 const SkMatrix& viewMatrix, |
393 const SkRect& devOutside, | 579 const SkRect& devOutside, |
394 const SkRect& devOutsideAssist, | 580 const SkRect& devOutsideAssist, |
395 const SkRect& devInside, | 581 const SkRect& devInside, |
396 bool miterStroke) { | 582 bool miterStroke) { |
397 GrPipelineBuilder::AutoRestoreEffects are(pipelineBuilder); | |
398 | |
399 SkMatrix localMatrix; | 583 SkMatrix localMatrix; |
400 if (!viewMatrix.invert(&localMatrix)) { | 584 if (!viewMatrix.invert(&localMatrix)) { |
401 SkDebugf("Cannot invert\n"); | 585 SkDebugf("Cannot invert\n"); |
402 return; | 586 return; |
403 } | 587 } |
404 | 588 |
405 CoverageAttribType type; | 589 CoverageAttribType type; |
406 SkAutoTUnref<const GrGeometryProcessor> gp(create_rect_gp(*pipelineBuilder, color, &type, | 590 SkAutoTUnref<const GrGeometryProcessor> gp(create_rect_gp(*pipelineBuilder, color, &type, |
407 localMatrix)); | 591 localMatrix)); |
408 | 592 |
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541 | 725 |
542 if (devInside.isEmpty()) { | 726 if (devInside.isEmpty()) { |
543 this->fillAARect(target, pipelineBuilder, color, viewMatrix, devOutside, | 727 this->fillAARect(target, pipelineBuilder, color, viewMatrix, devOutside, |
544 devOutside); | 728 devOutside); |
545 return; | 729 return; |
546 } | 730 } |
547 | 731 |
548 this->geometryStrokeAARect(target, pipelineBuilder, color, viewMatrix, devOu tside, | 732 this->geometryStrokeAARect(target, pipelineBuilder, color, viewMatrix, devOu tside, |
549 devOutsideAssist, devInside, true); | 733 devOutsideAssist, devInside, true); |
550 } | 734 } |
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