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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2014 Google Inc. | 3 * Copyright 2014 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 "GrAADistanceFieldPathRenderer.h" | 9 #include "GrAADistanceFieldPathRenderer.h" |
10 | 10 |
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98 const GrDrawState*, | 98 const GrDrawState*, |
99 const SkPath&, | 99 const SkPath&, |
100 const SkStrokeRec&) const { | 100 const SkStrokeRec&) const { |
101 return GrPathRenderer::kNoSupport_StencilSupport; | 101 return GrPathRenderer::kNoSupport_StencilSupport; |
102 } | 102 } |
103 | 103 |
104 //////////////////////////////////////////////////////////////////////////////// | 104 //////////////////////////////////////////////////////////////////////////////// |
105 | 105 |
106 bool GrAADistanceFieldPathRenderer::onDrawPath(GrDrawTarget* target, | 106 bool GrAADistanceFieldPathRenderer::onDrawPath(GrDrawTarget* target, |
107 GrDrawState* drawState, | 107 GrDrawState* drawState, |
| 108 GrColor color, |
108 const SkPath& path, | 109 const SkPath& path, |
109 const SkStrokeRec& stroke, | 110 const SkStrokeRec& stroke, |
110 bool antiAlias) { | 111 bool antiAlias) { |
111 // we've already bailed on inverse filled paths, so this is safe | 112 // we've already bailed on inverse filled paths, so this is safe |
112 if (path.isEmpty()) { | 113 if (path.isEmpty()) { |
113 return true; | 114 return true; |
114 } | 115 } |
115 | 116 |
116 SkASSERT(fContext); | 117 SkASSERT(fContext); |
117 | 118 |
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136 PathData* pathData = fPathCache.find(key); | 137 PathData* pathData = fPathCache.find(key); |
137 if (NULL == pathData) { | 138 if (NULL == pathData) { |
138 SkScalar scale = desiredDimension/maxDim; | 139 SkScalar scale = desiredDimension/maxDim; |
139 pathData = this->addPathToAtlas(path, stroke, antiAlias, desiredDimensio
n, scale); | 140 pathData = this->addPathToAtlas(path, stroke, antiAlias, desiredDimensio
n, scale); |
140 if (NULL == pathData) { | 141 if (NULL == pathData) { |
141 return false; | 142 return false; |
142 } | 143 } |
143 } | 144 } |
144 | 145 |
145 // use signed distance field to render | 146 // use signed distance field to render |
146 return this->internalDrawPath(target, drawState, path, pathData); | 147 return this->internalDrawPath(target, drawState, color, path, pathData); |
147 } | 148 } |
148 | 149 |
149 // padding around path bounds to allow for antialiased pixels | 150 // padding around path bounds to allow for antialiased pixels |
150 const SkScalar kAntiAliasPad = 1.0f; | 151 const SkScalar kAntiAliasPad = 1.0f; |
151 | 152 |
152 GrAADistanceFieldPathRenderer::PathData* GrAADistanceFieldPathRenderer::addPathT
oAtlas( | 153 GrAADistanceFieldPathRenderer::PathData* GrAADistanceFieldPathRenderer::addPathT
oAtlas( |
153 const Sk
Path& path, | 154 const Sk
Path& path, |
154 const Sk
StrokeRec& stroke, | 155 const Sk
StrokeRec& stroke, |
155 bool ant
iAlias, | 156 bool ant
iAlias, |
156 uint32_t
dimension, | 157 uint32_t
dimension, |
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299 } | 300 } |
300 | 301 |
301 // tell the atlas to free the plot | 302 // tell the atlas to free the plot |
302 GrAtlas::RemovePlot(&fPlotUsage, plot); | 303 GrAtlas::RemovePlot(&fPlotUsage, plot); |
303 | 304 |
304 return true; | 305 return true; |
305 } | 306 } |
306 | 307 |
307 bool GrAADistanceFieldPathRenderer::internalDrawPath(GrDrawTarget* target, | 308 bool GrAADistanceFieldPathRenderer::internalDrawPath(GrDrawTarget* target, |
308 GrDrawState* drawState, | 309 GrDrawState* drawState, |
| 310 GrColor color, |
309 const SkPath& path, | 311 const SkPath& path, |
310 const PathData* pathData) { | 312 const PathData* pathData) { |
311 GrTexture* texture = fAtlas->getTexture(); | 313 GrTexture* texture = fAtlas->getTexture(); |
312 GrDrawState::AutoRestoreEffects are(drawState); | 314 GrDrawState::AutoRestoreEffects are(drawState); |
313 | 315 |
314 SkASSERT(pathData->fPlot); | 316 SkASSERT(pathData->fPlot); |
315 GrDrawTarget::DrawToken drawToken = target->getCurrentDrawToken(); | 317 GrDrawTarget::DrawToken drawToken = target->getCurrentDrawToken(); |
316 pathData->fPlot->setDrawToken(drawToken); | 318 pathData->fPlot->setDrawToken(drawToken); |
317 | 319 |
318 // set up any flags | 320 // set up any flags |
319 uint32_t flags = 0; | 321 uint32_t flags = 0; |
320 const SkMatrix& vm = drawState->getViewMatrix(); | 322 const SkMatrix& vm = drawState->getViewMatrix(); |
321 flags |= vm.isSimilarity() ? kSimilarity_DistanceFieldEffectFlag : 0; | 323 flags |= vm.isSimilarity() ? kSimilarity_DistanceFieldEffectFlag : 0; |
322 | 324 |
323 GrTextureParams params(SkShader::kRepeat_TileMode, GrTextureParams::kBilerp_
FilterMode); | 325 GrTextureParams params(SkShader::kRepeat_TileMode, GrTextureParams::kBilerp_
FilterMode); |
324 if (flags != fEffectFlags) { | 326 if (flags != fEffectFlags || fCachedGeometryProcessor->getColor() != color)
{ |
325 fCachedGeometryProcessor.reset(GrDistanceFieldNoGammaTextureEffect::Crea
te(texture, | 327 fCachedGeometryProcessor.reset(GrDistanceFieldNoGammaTextureEffect::Crea
te(color, |
| 328
texture, |
326
params, | 329
params, |
327
flags)); | 330
flags)); |
328 fEffectFlags = flags; | 331 fEffectFlags = flags; |
329 } | 332 } |
330 drawState->setGeometryProcessor(fCachedGeometryProcessor.get()); | 333 drawState->setGeometryProcessor(fCachedGeometryProcessor.get()); |
331 | 334 |
332 void* vertices = NULL; | 335 void* vertices = NULL; |
333 bool success = target->reserveVertexAndIndexSpace(4, | 336 bool success = target->reserveVertexAndIndexSpace(4, |
334 fCachedGeometryProcessor->
getVertexStride(), | 337 fCachedGeometryProcessor->
getVertexStride(), |
335 0, &vertices, NULL); | 338 0, &vertices, NULL); |
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368 vertSize); | 371 vertSize); |
369 | 372 |
370 vm.mapRect(&r); | 373 vm.mapRect(&r); |
371 target->setIndexSourceToBuffer(fContext->getQuadIndexBuffer()); | 374 target->setIndexSourceToBuffer(fContext->getQuadIndexBuffer()); |
372 target->drawIndexedInstances(drawState, kTriangles_GrPrimitiveType, 1, 4, 6,
&r); | 375 target->drawIndexedInstances(drawState, kTriangles_GrPrimitiveType, 1, 4, 6,
&r); |
373 target->resetVertexSource(); | 376 target->resetVertexSource(); |
374 | 377 |
375 return true; | 378 return true; |
376 } | 379 } |
377 | 380 |
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