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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 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 "GrDistanceFieldGeoProc.h" | 8 #include "GrDistanceFieldGeoProc.h" |
9 #include "GrInvariantOutput.h" | 9 #include "GrInvariantOutput.h" |
10 #include "GrTexture.h" | 10 #include "GrTexture.h" |
11 | 11 |
12 #include "SkDistanceFieldGen.h" | 12 #include "SkDistanceFieldGen.h" |
13 | 13 |
14 #include "gl/GrGLFragmentProcessor.h" | 14 #include "gl/GrGLFragmentProcessor.h" |
15 #include "gl/GrGLTexture.h" | 15 #include "gl/GrGLTexture.h" |
16 #include "gl/GrGLGeometryProcessor.h" | 16 #include "gl/GrGLGeometryProcessor.h" |
17 #include "gl/builders/GrGLProgramBuilder.h" | 17 #include "gl/builders/GrGLProgramBuilder.h" |
| 18 #include "glsl/GrGLSLProgramDataManager.h" |
18 | 19 |
19 // Assuming a radius of a little less than the diagonal of the fragment | 20 // Assuming a radius of a little less than the diagonal of the fragment |
20 #define SK_DistanceFieldAAFactor "0.65" | 21 #define SK_DistanceFieldAAFactor "0.65" |
21 | 22 |
22 class GrGLDistanceFieldA8TextGeoProc : public GrGLGeometryProcessor { | 23 class GrGLDistanceFieldA8TextGeoProc : public GrGLGeometryProcessor { |
23 public: | 24 public: |
24 GrGLDistanceFieldA8TextGeoProc() | 25 GrGLDistanceFieldA8TextGeoProc() |
25 : fViewMatrix(SkMatrix::InvalidMatrix()) | 26 : fViewMatrix(SkMatrix::InvalidMatrix()) |
26 , fColor(GrColor_ILLEGAL) | 27 , fColor(GrColor_ILLEGAL) |
27 #ifdef SK_GAMMA_APPLY_TO_A8 | 28 #ifdef SK_GAMMA_APPLY_TO_A8 |
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136 fsBuilder->codeAppend(" dist_grad.x*Jdx.y + dist_gra
d.y*Jdy.y);"); | 137 fsBuilder->codeAppend(" dist_grad.x*Jdx.y + dist_gra
d.y*Jdy.y);"); |
137 | 138 |
138 // this gives us a smooth step across approximately one fragment | 139 // this gives us a smooth step across approximately one fragment |
139 fsBuilder->codeAppend("afwidth = " SK_DistanceFieldAAFactor "*length
(grad);"); | 140 fsBuilder->codeAppend("afwidth = " SK_DistanceFieldAAFactor "*length
(grad);"); |
140 } | 141 } |
141 fsBuilder->codeAppend("float val = smoothstep(-afwidth, afwidth, distanc
e);"); | 142 fsBuilder->codeAppend("float val = smoothstep(-afwidth, afwidth, distanc
e);"); |
142 | 143 |
143 fsBuilder->codeAppendf("%s = vec4(val);", args.fOutputCoverage); | 144 fsBuilder->codeAppendf("%s = vec4(val);", args.fOutputCoverage); |
144 } | 145 } |
145 | 146 |
146 void setData(const GrGLProgramDataManager& pdman, const GrPrimitiveProcessor
& proc) override { | 147 void setData(const GrGLSLProgramDataManager& pdman, const GrPrimitiveProcess
or& proc) override { |
147 #ifdef SK_GAMMA_APPLY_TO_A8 | 148 #ifdef SK_GAMMA_APPLY_TO_A8 |
148 const GrDistanceFieldA8TextGeoProc& dfTexEffect = proc.cast<GrDistanceFi
eldA8TextGeoProc>(); | 149 const GrDistanceFieldA8TextGeoProc& dfTexEffect = proc.cast<GrDistanceFi
eldA8TextGeoProc>(); |
149 float distanceAdjust = dfTexEffect.getDistanceAdjust(); | 150 float distanceAdjust = dfTexEffect.getDistanceAdjust(); |
150 if (distanceAdjust != fDistanceAdjust) { | 151 if (distanceAdjust != fDistanceAdjust) { |
151 pdman.set1f(fDistanceAdjustUni, distanceAdjust); | 152 pdman.set1f(fDistanceAdjustUni, distanceAdjust); |
152 fDistanceAdjust = distanceAdjust; | 153 fDistanceAdjust = distanceAdjust; |
153 } | 154 } |
154 #endif | 155 #endif |
155 const GrDistanceFieldA8TextGeoProc& dfa8gp = proc.cast<GrDistanceFieldA8
TextGeoProc>(); | 156 const GrDistanceFieldA8TextGeoProc& dfa8gp = proc.cast<GrDistanceFieldA8
TextGeoProc>(); |
156 | 157 |
157 if (!dfa8gp.viewMatrix().isIdentity() && !fViewMatrix.cheapEqualTo(dfa8g
p.viewMatrix())) { | 158 if (!dfa8gp.viewMatrix().isIdentity() && !fViewMatrix.cheapEqualTo(dfa8g
p.viewMatrix())) { |
158 fViewMatrix = dfa8gp.viewMatrix(); | 159 fViewMatrix = dfa8gp.viewMatrix(); |
159 GrGLfloat viewMatrix[3 * 3]; | 160 float viewMatrix[3 * 3]; |
160 GrGLGetMatrix<3>(viewMatrix, fViewMatrix); | 161 GrGLGetMatrix<3>(viewMatrix, fViewMatrix); |
161 pdman.setMatrix3f(fViewMatrixUniform, viewMatrix); | 162 pdman.setMatrix3f(fViewMatrixUniform, viewMatrix); |
162 } | 163 } |
163 | 164 |
164 if (dfa8gp.color() != fColor && !dfa8gp.hasVertexColor()) { | 165 if (dfa8gp.color() != fColor && !dfa8gp.hasVertexColor()) { |
165 GrGLfloat c[4]; | 166 float c[4]; |
166 GrColorToRGBAFloat(dfa8gp.color(), c); | 167 GrColorToRGBAFloat(dfa8gp.color(), c); |
167 pdman.set4fv(fColorUniform, 1, c); | 168 pdman.set4fv(fColorUniform, 1, c); |
168 fColor = dfa8gp.color(); | 169 fColor = dfa8gp.color(); |
169 } | 170 } |
170 } | 171 } |
171 | 172 |
172 static inline void GenKey(const GrGeometryProcessor& gp, | 173 static inline void GenKey(const GrGeometryProcessor& gp, |
173 const GrGLSLCaps&, | 174 const GrGLSLCaps&, |
174 GrProcessorKeyBuilder* b) { | 175 GrProcessorKeyBuilder* b) { |
175 const GrDistanceFieldA8TextGeoProc& dfTexEffect = gp.cast<GrDistanceFiel
dA8TextGeoProc>(); | 176 const GrDistanceFieldA8TextGeoProc& dfTexEffect = gp.cast<GrDistanceFiel
dA8TextGeoProc>(); |
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363 fsBuilder->codeAppend(" dist_grad.x*Jdx.y + dist_gra
d.y*Jdy.y);"); | 364 fsBuilder->codeAppend(" dist_grad.x*Jdx.y + dist_gra
d.y*Jdy.y);"); |
364 | 365 |
365 // this gives us a smooth step across approximately one fragment | 366 // this gives us a smooth step across approximately one fragment |
366 fsBuilder->codeAppend("afwidth = " SK_DistanceFieldAAFactor "*length
(grad);"); | 367 fsBuilder->codeAppend("afwidth = " SK_DistanceFieldAAFactor "*length
(grad);"); |
367 } | 368 } |
368 fsBuilder->codeAppend("float val = smoothstep(-afwidth, afwidth, distanc
e);"); | 369 fsBuilder->codeAppend("float val = smoothstep(-afwidth, afwidth, distanc
e);"); |
369 | 370 |
370 fsBuilder->codeAppendf("%s = vec4(val);", args.fOutputCoverage); | 371 fsBuilder->codeAppendf("%s = vec4(val);", args.fOutputCoverage); |
371 } | 372 } |
372 | 373 |
373 void setData(const GrGLProgramDataManager& pdman, const GrPrimitiveProcessor
& proc) override { | 374 void setData(const GrGLSLProgramDataManager& pdman, const GrPrimitiveProcess
or& proc) override { |
374 SkASSERT(fTextureSizeUni.isValid()); | 375 SkASSERT(fTextureSizeUni.isValid()); |
375 | 376 |
376 GrTexture* texture = proc.texture(0); | 377 GrTexture* texture = proc.texture(0); |
377 if (texture->width() != fTextureSize.width() || | 378 if (texture->width() != fTextureSize.width() || |
378 texture->height() != fTextureSize.height()) { | 379 texture->height() != fTextureSize.height()) { |
379 fTextureSize = SkISize::Make(texture->width(), texture->height()); | 380 fTextureSize = SkISize::Make(texture->width(), texture->height()); |
380 pdman.set2f(fTextureSizeUni, | 381 pdman.set2f(fTextureSizeUni, |
381 SkIntToScalar(fTextureSize.width()), | 382 SkIntToScalar(fTextureSize.width()), |
382 SkIntToScalar(fTextureSize.height())); | 383 SkIntToScalar(fTextureSize.height())); |
383 } | 384 } |
384 | 385 |
385 const GrDistanceFieldPathGeoProc& dfpgp = proc.cast<GrDistanceFieldPathG
eoProc>(); | 386 const GrDistanceFieldPathGeoProc& dfpgp = proc.cast<GrDistanceFieldPathG
eoProc>(); |
386 | 387 |
387 if (!dfpgp.viewMatrix().isIdentity() && !fViewMatrix.cheapEqualTo(dfpgp.
viewMatrix())) { | 388 if (!dfpgp.viewMatrix().isIdentity() && !fViewMatrix.cheapEqualTo(dfpgp.
viewMatrix())) { |
388 fViewMatrix = dfpgp.viewMatrix(); | 389 fViewMatrix = dfpgp.viewMatrix(); |
389 GrGLfloat viewMatrix[3 * 3]; | 390 float viewMatrix[3 * 3]; |
390 GrGLGetMatrix<3>(viewMatrix, fViewMatrix); | 391 GrGLGetMatrix<3>(viewMatrix, fViewMatrix); |
391 pdman.setMatrix3f(fViewMatrixUniform, viewMatrix); | 392 pdman.setMatrix3f(fViewMatrixUniform, viewMatrix); |
392 } | 393 } |
393 | 394 |
394 if (dfpgp.color() != fColor) { | 395 if (dfpgp.color() != fColor) { |
395 GrGLfloat c[4]; | 396 float c[4]; |
396 GrColorToRGBAFloat(dfpgp.color(), c); | 397 GrColorToRGBAFloat(dfpgp.color(), c); |
397 pdman.set4fv(fColorUniform, 1, c); | 398 pdman.set4fv(fColorUniform, 1, c); |
398 fColor = dfpgp.color(); | 399 fColor = dfpgp.color(); |
399 } | 400 } |
400 } | 401 } |
401 | 402 |
402 static inline void GenKey(const GrGeometryProcessor& gp, | 403 static inline void GenKey(const GrGeometryProcessor& gp, |
403 const GrGLSLCaps&, | 404 const GrGLSLCaps&, |
404 GrProcessorKeyBuilder* b) { | 405 GrProcessorKeyBuilder* b) { |
405 const GrDistanceFieldPathGeoProc& dfTexEffect = gp.cast<GrDistanceFieldP
athGeoProc>(); | 406 const GrDistanceFieldPathGeoProc& dfTexEffect = gp.cast<GrDistanceFieldP
athGeoProc>(); |
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632 } | 633 } |
633 | 634 |
634 fsBuilder->codeAppend( | 635 fsBuilder->codeAppend( |
635 "vec4 val = vec4(smoothstep(vec3(-afwidth), vec3(afwidth),
distance), 1.0);"); | 636 "vec4 val = vec4(smoothstep(vec3(-afwidth), vec3(afwidth),
distance), 1.0);"); |
636 // set alpha to be max of rgb coverage | 637 // set alpha to be max of rgb coverage |
637 fsBuilder->codeAppend("val.a = max(max(val.r, val.g), val.b);"); | 638 fsBuilder->codeAppend("val.a = max(max(val.r, val.g), val.b);"); |
638 | 639 |
639 fsBuilder->codeAppendf("%s = val;", args.fOutputCoverage); | 640 fsBuilder->codeAppendf("%s = val;", args.fOutputCoverage); |
640 } | 641 } |
641 | 642 |
642 void setData(const GrGLProgramDataManager& pdman, | 643 void setData(const GrGLSLProgramDataManager& pdman, |
643 const GrPrimitiveProcessor& processor) override { | 644 const GrPrimitiveProcessor& processor) override { |
644 SkASSERT(fDistanceAdjustUni.isValid()); | 645 SkASSERT(fDistanceAdjustUni.isValid()); |
645 | 646 |
646 const GrDistanceFieldLCDTextGeoProc& dflcd = processor.cast<GrDistanceFi
eldLCDTextGeoProc>(); | 647 const GrDistanceFieldLCDTextGeoProc& dflcd = processor.cast<GrDistanceFi
eldLCDTextGeoProc>(); |
647 GrDistanceFieldLCDTextGeoProc::DistanceAdjust wa = dflcd.getDistanceAdju
st(); | 648 GrDistanceFieldLCDTextGeoProc::DistanceAdjust wa = dflcd.getDistanceAdju
st(); |
648 if (wa != fDistanceAdjust) { | 649 if (wa != fDistanceAdjust) { |
649 pdman.set3f(fDistanceAdjustUni, | 650 pdman.set3f(fDistanceAdjustUni, |
650 wa.fR, | 651 wa.fR, |
651 wa.fG, | 652 wa.fG, |
652 wa.fB); | 653 wa.fB); |
653 fDistanceAdjust = wa; | 654 fDistanceAdjust = wa; |
654 } | 655 } |
655 | 656 |
656 if (!dflcd.viewMatrix().isIdentity() && !fViewMatrix.cheapEqualTo(dflcd.
viewMatrix())) { | 657 if (!dflcd.viewMatrix().isIdentity() && !fViewMatrix.cheapEqualTo(dflcd.
viewMatrix())) { |
657 fViewMatrix = dflcd.viewMatrix(); | 658 fViewMatrix = dflcd.viewMatrix(); |
658 GrGLfloat viewMatrix[3 * 3]; | 659 float viewMatrix[3 * 3]; |
659 GrGLGetMatrix<3>(viewMatrix, fViewMatrix); | 660 GrGLGetMatrix<3>(viewMatrix, fViewMatrix); |
660 pdman.setMatrix3f(fViewMatrixUniform, viewMatrix); | 661 pdman.setMatrix3f(fViewMatrixUniform, viewMatrix); |
661 } | 662 } |
662 | 663 |
663 if (dflcd.color() != fColor) { | 664 if (dflcd.color() != fColor) { |
664 GrGLfloat c[4]; | 665 float c[4]; |
665 GrColorToRGBAFloat(dflcd.color(), c); | 666 GrColorToRGBAFloat(dflcd.color(), c); |
666 pdman.set4fv(fColorUniform, 1, c); | 667 pdman.set4fv(fColorUniform, 1, c); |
667 fColor = dflcd.color(); | 668 fColor = dflcd.color(); |
668 } | 669 } |
669 } | 670 } |
670 | 671 |
671 static inline void GenKey(const GrGeometryProcessor& gp, | 672 static inline void GenKey(const GrGeometryProcessor& gp, |
672 const GrGLSLCaps&, | 673 const GrGLSLCaps&, |
673 GrProcessorKeyBuilder* b) { | 674 GrProcessorKeyBuilder* b) { |
674 const GrDistanceFieldLCDTextGeoProc& dfTexEffect = gp.cast<GrDistanceFie
ldLCDTextGeoProc>(); | 675 const GrDistanceFieldLCDTextGeoProc& dfTexEffect = gp.cast<GrDistanceFie
ldLCDTextGeoProc>(); |
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750 uint32_t flags = kUseLCD_DistanceFieldEffectFlag; | 751 uint32_t flags = kUseLCD_DistanceFieldEffectFlag; |
751 flags |= d->fRandom->nextBool() ? kUniformScale_DistanceFieldEffectMask : 0; | 752 flags |= d->fRandom->nextBool() ? kUniformScale_DistanceFieldEffectMask : 0; |
752 flags |= d->fRandom->nextBool() ? kBGR_DistanceFieldEffectFlag : 0; | 753 flags |= d->fRandom->nextBool() ? kBGR_DistanceFieldEffectFlag : 0; |
753 return GrDistanceFieldLCDTextGeoProc::Create(GrRandomColor(d->fRandom), | 754 return GrDistanceFieldLCDTextGeoProc::Create(GrRandomColor(d->fRandom), |
754 GrTest::TestMatrix(d->fRandom), | 755 GrTest::TestMatrix(d->fRandom), |
755 d->fTextures[texIdx], params, | 756 d->fTextures[texIdx], params, |
756 wa, | 757 wa, |
757 flags, | 758 flags, |
758 d->fRandom->nextBool()); | 759 d->fRandom->nextBool()); |
759 } | 760 } |
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