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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 "SkLinearGradient.h" | 8 #include "SkLinearGradient.h" |
| 9 | 9 |
| 10 static inline int repeat_bits(int x, const int bits) { | 10 static inline int repeat_bits(int x, const int bits) { |
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| 482 | 482 |
| 483 typedef GrGLGradientEffect INHERITED; | 483 typedef GrGLGradientEffect INHERITED; |
| 484 }; | 484 }; |
| 485 | 485 |
| 486 ///////////////////////////////////////////////////////////////////// | 486 ///////////////////////////////////////////////////////////////////// |
| 487 | 487 |
| 488 class GrLinearGradient : public GrGradientEffect { | 488 class GrLinearGradient : public GrGradientEffect { |
| 489 public: | 489 public: |
| 490 | 490 |
| 491 static GrFragmentProcessor* Create(GrContext* ctx, | 491 static GrFragmentProcessor* Create(GrContext* ctx, |
| 492 GrShaderDataManager* shaderDataManager, |
| 492 const SkLinearGradient& shader, | 493 const SkLinearGradient& shader, |
| 493 const SkMatrix& matrix, | 494 const SkMatrix& matrix, |
| 494 SkShader::TileMode tm) { | 495 SkShader::TileMode tm) { |
| 495 return SkNEW_ARGS(GrLinearGradient, (ctx, shader, matrix, tm)); | 496 return SkNEW_ARGS(GrLinearGradient, (ctx, shaderDataManager, shader, mat
rix, tm)); |
| 496 } | 497 } |
| 497 | 498 |
| 498 virtual ~GrLinearGradient() { } | 499 virtual ~GrLinearGradient() { } |
| 499 | 500 |
| 500 const char* name() const override { return "Linear Gradient"; } | 501 const char* name() const override { return "Linear Gradient"; } |
| 501 | 502 |
| 502 virtual void getGLProcessorKey(const GrGLSLCaps& caps, | 503 virtual void getGLProcessorKey(const GrGLSLCaps& caps, |
| 503 GrProcessorKeyBuilder* b) const override { | 504 GrProcessorKeyBuilder* b) const override { |
| 504 GrGLLinearGradient::GenKey(*this, caps, b); | 505 GrGLLinearGradient::GenKey(*this, caps, b); |
| 505 } | 506 } |
| 506 | 507 |
| 507 GrGLFragmentProcessor* createGLInstance() const override { | 508 GrGLFragmentProcessor* createGLInstance() const override { |
| 508 return SkNEW_ARGS(GrGLLinearGradient, (*this)); | 509 return SkNEW_ARGS(GrGLLinearGradient, (*this)); |
| 509 } | 510 } |
| 510 | 511 |
| 511 private: | 512 private: |
| 512 GrLinearGradient(GrContext* ctx, | 513 GrLinearGradient(GrContext* ctx, |
| 514 GrShaderDataManager* shaderDataManager, |
| 513 const SkLinearGradient& shader, | 515 const SkLinearGradient& shader, |
| 514 const SkMatrix& matrix, | 516 const SkMatrix& matrix, |
| 515 SkShader::TileMode tm) | 517 SkShader::TileMode tm) |
| 516 : INHERITED(ctx, shader, matrix, tm) { | 518 : INHERITED(ctx, shaderDataManager, shader, matrix, tm) { |
| 517 this->initClassID<GrLinearGradient>(); | 519 this->initClassID<GrLinearGradient>(); |
| 518 } | 520 } |
| 519 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; | 521 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
| 520 | 522 |
| 521 typedef GrGradientEffect INHERITED; | 523 typedef GrGradientEffect INHERITED; |
| 522 }; | 524 }; |
| 523 | 525 |
| 524 ///////////////////////////////////////////////////////////////////// | 526 ///////////////////////////////////////////////////////////////////// |
| 525 | 527 |
| 526 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrLinearGradient); | 528 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrLinearGradient); |
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| 562 this->emitUniforms(builder, ge); | 564 this->emitUniforms(builder, ge); |
| 563 SkString t = builder->getFragmentShaderBuilder()->ensureFSCoords2D(coords, 0
); | 565 SkString t = builder->getFragmentShaderBuilder()->ensureFSCoords2D(coords, 0
); |
| 564 t.append(".x"); | 566 t.append(".x"); |
| 565 this->emitColor(builder, ge, t.c_str(), outputColor, inputColor, samplers); | 567 this->emitColor(builder, ge, t.c_str(), outputColor, inputColor, samplers); |
| 566 } | 568 } |
| 567 | 569 |
| 568 ///////////////////////////////////////////////////////////////////// | 570 ///////////////////////////////////////////////////////////////////// |
| 569 | 571 |
| 570 bool SkLinearGradient::asFragmentProcessor(GrContext* context, const SkPaint& pa
int, | 572 bool SkLinearGradient::asFragmentProcessor(GrContext* context, const SkPaint& pa
int, |
| 571 const SkMatrix& viewm, const SkMatrix
* localMatrix, | 573 const SkMatrix& viewm, const SkMatrix
* localMatrix, |
| 572 GrColor* paintColor, GrShaderDataMana
ger*, | 574 GrColor* paintColor, |
| 575 GrShaderDataManager* shaderDataManage
r, |
| 573 GrFragmentProcessor** fp) const { | 576 GrFragmentProcessor** fp) const { |
| 574 SkASSERT(context); | 577 SkASSERT(context); |
| 575 | 578 |
| 576 SkMatrix matrix; | 579 SkMatrix matrix; |
| 577 if (!this->getLocalMatrix().invert(&matrix)) { | 580 if (!this->getLocalMatrix().invert(&matrix)) { |
| 578 return false; | 581 return false; |
| 579 } | 582 } |
| 580 if (localMatrix) { | 583 if (localMatrix) { |
| 581 SkMatrix inv; | 584 SkMatrix inv; |
| 582 if (!localMatrix->invert(&inv)) { | 585 if (!localMatrix->invert(&inv)) { |
| 583 return false; | 586 return false; |
| 584 } | 587 } |
| 585 matrix.postConcat(inv); | 588 matrix.postConcat(inv); |
| 586 } | 589 } |
| 587 matrix.postConcat(fPtsToUnit); | 590 matrix.postConcat(fPtsToUnit); |
| 588 | 591 |
| 589 *paintColor = SkColor2GrColorJustAlpha(paint.getColor()); | 592 *paintColor = SkColor2GrColorJustAlpha(paint.getColor()); |
| 590 *fp = GrLinearGradient::Create(context, *this, matrix, fTileMode); | 593 *fp = GrLinearGradient::Create(context, shaderDataManager, *this, matrix, fT
ileMode); |
| 591 | 594 |
| 592 return true; | 595 return true; |
| 593 } | 596 } |
| 594 | 597 |
| 595 #else | 598 #else |
| 596 | 599 |
| 597 bool SkLinearGradient::asFragmentProcessor(GrContext*, const SkPaint&, const SkM
atrix&, | 600 bool SkLinearGradient::asFragmentProcessor(GrContext*, const SkPaint&, const SkM
atrix&, |
| 598 const SkMatrix*, GrColor*, GrShaderDa
taManager*, | 601 const SkMatrix*, GrColor*, GrShaderDa
taManager*, |
| 599 GrFragmentProcessor**) const { | 602 GrFragmentProcessor**) const { |
| 600 SkDEBUGFAIL("Should not call in GPU-less build"); | 603 SkDEBUGFAIL("Should not call in GPU-less build"); |
| 601 return false; | 604 return false; |
| 602 } | 605 } |
| 603 | 606 |
| 604 #endif | 607 #endif |
| 605 | 608 |
| 606 #ifndef SK_IGNORE_TO_STRING | 609 #ifndef SK_IGNORE_TO_STRING |
| 607 void SkLinearGradient::toString(SkString* str) const { | 610 void SkLinearGradient::toString(SkString* str) const { |
| 608 str->append("SkLinearGradient ("); | 611 str->append("SkLinearGradient ("); |
| 609 | 612 |
| 610 str->appendf("start: (%f, %f)", fStart.fX, fStart.fY); | 613 str->appendf("start: (%f, %f)", fStart.fX, fStart.fY); |
| 611 str->appendf(" end: (%f, %f) ", fEnd.fX, fEnd.fY); | 614 str->appendf(" end: (%f, %f) ", fEnd.fX, fEnd.fY); |
| 612 | 615 |
| 613 this->INHERITED::toString(str); | 616 this->INHERITED::toString(str); |
| 614 | 617 |
| 615 str->append(")"); | 618 str->append(")"); |
| 616 } | 619 } |
| 617 #endif | 620 #endif |
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