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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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