OLD | NEW |
1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 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 "gl/builders/GrGLProgramBuilder.h" | 8 #include "gl/builders/GrGLProgramBuilder.h" |
9 #include "GrDashingEffect.h" | 9 #include "GrDashingEffect.h" |
10 | 10 |
11 #include "../GrAARectRenderer.h" | 11 #include "../GrAARectRenderer.h" |
12 | 12 |
13 #include "effects/GrVertexEffect.h" | 13 #include "effects/GrGeometryProcessor.h" |
14 #include "gl/GrGLEffect.h" | 14 #include "gl/GrGLEffect.h" |
15 #include "gl/GrGLVertexEffect.h" | 15 #include "gl/GrGLGeometryProcessor.h" |
16 #include "gl/GrGLSL.h" | 16 #include "gl/GrGLSL.h" |
17 #include "GrContext.h" | 17 #include "GrContext.h" |
18 #include "GrCoordTransform.h" | 18 #include "GrCoordTransform.h" |
19 #include "GrDrawTarget.h" | 19 #include "GrDrawTarget.h" |
20 #include "GrDrawTargetCaps.h" | 20 #include "GrDrawTargetCaps.h" |
21 #include "GrEffect.h" | 21 #include "GrEffect.h" |
22 #include "GrGpu.h" | 22 #include "GrGpu.h" |
23 #include "GrStrokeInfo.h" | 23 #include "GrStrokeInfo.h" |
24 #include "GrTBackendEffectFactory.h" | 24 #include "GrTBackendEffectFactory.h" |
25 #include "SkGr.h" | 25 #include "SkGr.h" |
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62 return true; | 62 return true; |
63 } | 63 } |
64 | 64 |
65 namespace { | 65 namespace { |
66 | 66 |
67 struct DashLineVertex { | 67 struct DashLineVertex { |
68 SkPoint fPos; | 68 SkPoint fPos; |
69 SkPoint fDashPos; | 69 SkPoint fDashPos; |
70 }; | 70 }; |
71 | 71 |
| 72 extern const GrVertexAttrib gDashLineNoAAVertexAttribs[] = { |
| 73 { kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribBind
ing } |
| 74 }; |
| 75 |
72 extern const GrVertexAttrib gDashLineVertexAttribs[] = { | 76 extern const GrVertexAttrib gDashLineVertexAttribs[] = { |
73 { kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribBind
ing }, | 77 { kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribBind
ing }, |
74 { kVec2f_GrVertexAttribType, sizeof(SkPoint), kEffect_GrVertexAttribBindin
g }, | 78 { kVec2f_GrVertexAttribType, sizeof(SkPoint), kEffect_GrVertexAttribBindin
g }, |
75 }; | 79 }; |
76 | 80 |
77 }; | 81 }; |
78 static void calc_dash_scaling(SkScalar* parallelScale, SkScalar* perpScale, | 82 static void calc_dash_scaling(SkScalar* parallelScale, SkScalar* perpScale, |
79 const SkMatrix& viewMatrix, const SkPoint pts[2]) { | 83 const SkMatrix& viewMatrix, const SkPoint pts[2]) { |
80 SkVector vecSrc = pts[1] - pts[0]; | 84 SkVector vecSrc = pts[1] - pts[0]; |
81 SkScalar magSrc = vecSrc.length(); | 85 SkScalar magSrc = vecSrc.length(); |
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339 SkPathEffect::DashInfo devInfo; | 343 SkPathEffect::DashInfo devInfo; |
340 devInfo.fPhase = devPhase; | 344 devInfo.fPhase = devPhase; |
341 devInfo.fCount = 2; | 345 devInfo.fCount = 2; |
342 devInfo.fIntervals = devIntervals; | 346 devInfo.fIntervals = devIntervals; |
343 GrEffectEdgeType edgeType= useAA ? kFillAA_GrEffectEdgeType : | 347 GrEffectEdgeType edgeType= useAA ? kFillAA_GrEffectEdgeType : |
344 kFillBW_GrEffectEdgeType; | 348 kFillBW_GrEffectEdgeType; |
345 bool isRoundCap = SkPaint::kRound_Cap == cap; | 349 bool isRoundCap = SkPaint::kRound_Cap == cap; |
346 GrDashingEffect::DashCap capType = isRoundCap ? GrDashingEffect::kRound_
DashCap : | 350 GrDashingEffect::DashCap capType = isRoundCap ? GrDashingEffect::kRound_
DashCap : |
347 GrDashingEffect::kNonRou
nd_DashCap; | 351 GrDashingEffect::kNonRou
nd_DashCap; |
348 drawState->setGeometryProcessor( | 352 drawState->setGeometryProcessor( |
349 GrDashingEffect::Create(edgeType, devInfo, strokeWidth, capType), 1)
->unref(); | 353 GrDashingEffect::Create(edgeType, devInfo, strokeWidth, capType))->u
nref(); |
| 354 |
| 355 // Set up the vertex data for the line and start/end dashes |
| 356 drawState->setVertexAttribs<gDashLineVertexAttribs>(SK_ARRAY_COUNT(gDash
LineVertexAttribs), |
| 357 sizeof(DashLineVerte
x)); |
| 358 } else { |
| 359 // Set up the vertex data for the line and start/end dashes |
| 360 drawState->setVertexAttribs<gDashLineNoAAVertexAttribs>( |
| 361 SK_ARRAY_COUNT(gDashLineNoAAVertexAttribs), sizeof(DashLineVerte
x)); |
350 } | 362 } |
351 | 363 |
352 // Set up the vertex data for the line and start/end dashes | |
353 drawState->setVertexAttribs<gDashLineVertexAttribs>(SK_ARRAY_COUNT(gDashLine
VertexAttribs), | |
354 sizeof(DashLineVertex)); | |
355 | |
356 int totalRectCnt = 0; | 364 int totalRectCnt = 0; |
357 | 365 |
358 totalRectCnt += !lineDone ? 1 : 0; | 366 totalRectCnt += !lineDone ? 1 : 0; |
359 totalRectCnt += hasStartRect ? 1 : 0; | 367 totalRectCnt += hasStartRect ? 1 : 0; |
360 totalRectCnt += hasEndRect ? 1 : 0; | 368 totalRectCnt += hasEndRect ? 1 : 0; |
361 | 369 |
362 GrDrawTarget::AutoReleaseGeometry geo(target, totalRectCnt * 4, 0); | 370 GrDrawTarget::AutoReleaseGeometry geo(target, totalRectCnt * 4, 0); |
363 if (!geo.succeeded()) { | 371 if (!geo.succeeded()) { |
364 GrPrintf("Failed to get space for vertices!\n"); | 372 GrPrintf("Failed to get space for vertices!\n"); |
365 return false; | 373 return false; |
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417 class GLDashingCircleEffect; | 425 class GLDashingCircleEffect; |
418 /* | 426 /* |
419 * This effect will draw a dotted line (defined as a dashed lined with round cap
s and no on | 427 * This effect will draw a dotted line (defined as a dashed lined with round cap
s and no on |
420 * interval). The radius of the dots is given by the strokeWidth and the spacing
by the DashInfo. | 428 * interval). The radius of the dots is given by the strokeWidth and the spacing
by the DashInfo. |
421 * Both of the previous two parameters are in device space. This effect also req
uires the setting of | 429 * Both of the previous two parameters are in device space. This effect also req
uires the setting of |
422 * a vec2 vertex attribute for the the four corners of the bounding rect. This a
ttribute is the | 430 * a vec2 vertex attribute for the the four corners of the bounding rect. This a
ttribute is the |
423 * "dash position" of each vertex. In other words it is the vertex coords (in de
vice space) if we | 431 * "dash position" of each vertex. In other words it is the vertex coords (in de
vice space) if we |
424 * transform the line to be horizontal, with the start of line at the origin the
n shifted to the | 432 * transform the line to be horizontal, with the start of line at the origin the
n shifted to the |
425 * right by half the off interval. The line then goes in the positive x directio
n. | 433 * right by half the off interval. The line then goes in the positive x directio
n. |
426 */ | 434 */ |
427 class DashingCircleEffect : public GrVertexEffect { | 435 class DashingCircleEffect : public GrGeometryProcessor { |
428 public: | 436 public: |
429 typedef SkPathEffect::DashInfo DashInfo; | 437 typedef SkPathEffect::DashInfo DashInfo; |
430 | 438 |
431 static GrEffect* Create(GrEffectEdgeType edgeType, const DashInfo& info, SkS
calar radius); | 439 static GrEffect* Create(GrEffectEdgeType edgeType, const DashInfo& info, SkS
calar radius); |
432 | 440 |
433 virtual ~DashingCircleEffect(); | 441 virtual ~DashingCircleEffect(); |
434 | 442 |
435 static const char* Name() { return "DashingCircleEffect"; } | 443 static const char* Name() { return "DashingCircleEffect"; } |
436 | 444 |
| 445 const GrShaderVar& inCoord() const { return fInCoord; } |
| 446 |
437 GrEffectEdgeType getEdgeType() const { return fEdgeType; } | 447 GrEffectEdgeType getEdgeType() const { return fEdgeType; } |
438 | 448 |
439 SkScalar getRadius() const { return fRadius; } | 449 SkScalar getRadius() const { return fRadius; } |
440 | 450 |
441 SkScalar getCenterX() const { return fCenterX; } | 451 SkScalar getCenterX() const { return fCenterX; } |
442 | 452 |
443 SkScalar getIntervalLength() const { return fIntervalLength; } | 453 SkScalar getIntervalLength() const { return fIntervalLength; } |
444 | 454 |
445 typedef GLDashingCircleEffect GLEffect; | 455 typedef GLDashingCircleEffect GLEffect; |
446 | 456 |
447 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; | 457 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; |
448 | 458 |
449 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; | 459 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; |
450 | 460 |
451 private: | 461 private: |
452 DashingCircleEffect(GrEffectEdgeType edgeType, const DashInfo& info, SkScala
r radius); | 462 DashingCircleEffect(GrEffectEdgeType edgeType, const DashInfo& info, SkScala
r radius); |
453 | 463 |
454 virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE; | 464 virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE; |
455 | 465 |
456 GrEffectEdgeType fEdgeType; | 466 GrEffectEdgeType fEdgeType; |
| 467 const GrShaderVar& fInCoord; |
457 SkScalar fIntervalLength; | 468 SkScalar fIntervalLength; |
458 SkScalar fRadius; | 469 SkScalar fRadius; |
459 SkScalar fCenterX; | 470 SkScalar fCenterX; |
460 | 471 |
461 GR_DECLARE_EFFECT_TEST; | 472 GR_DECLARE_EFFECT_TEST; |
462 | 473 |
463 typedef GrVertexEffect INHERITED; | 474 typedef GrGeometryProcessor INHERITED; |
464 }; | 475 }; |
465 | 476 |
466 ////////////////////////////////////////////////////////////////////////////// | 477 ////////////////////////////////////////////////////////////////////////////// |
467 | 478 |
468 class GLDashingCircleEffect : public GrGLVertexEffect { | 479 class GLDashingCircleEffect : public GrGLGeometryProcessor { |
469 public: | 480 public: |
470 GLDashingCircleEffect(const GrBackendEffectFactory&, const GrDrawEffect&); | 481 GLDashingCircleEffect(const GrBackendEffectFactory&, const GrDrawEffect&); |
471 | 482 |
472 virtual void emitCode(GrGLFullProgramBuilder* builder, | 483 virtual void emitCode(GrGLFullProgramBuilder* builder, |
473 const GrDrawEffect& drawEffect, | 484 const GrDrawEffect& drawEffect, |
474 const GrEffectKey& key, | 485 const GrEffectKey& key, |
475 const char* outputColor, | 486 const char* outputColor, |
476 const char* inputColor, | 487 const char* inputColor, |
477 const TransformedCoordsArray&, | 488 const TransformedCoordsArray&, |
478 const TextureSamplerArray&) SK_OVERRIDE; | 489 const TextureSamplerArray&) SK_OVERRIDE; |
479 | 490 |
480 static inline void GenKey(const GrDrawEffect&, const GrGLCaps&, GrEffectKeyB
uilder*); | 491 static inline void GenKey(const GrDrawEffect&, const GrGLCaps&, GrEffectKeyB
uilder*); |
481 | 492 |
482 virtual void setData(const GrGLProgramDataManager&, const GrDrawEffect&) SK_
OVERRIDE; | 493 virtual void setData(const GrGLProgramDataManager&, const GrDrawEffect&) SK_
OVERRIDE; |
483 | 494 |
484 private: | 495 private: |
485 GrGLProgramDataManager::UniformHandle fParamUniform; | 496 GrGLProgramDataManager::UniformHandle fParamUniform; |
486 SkScalar fPrevRadius; | 497 SkScalar fPrevRadius; |
487 SkScalar fPrevCenterX; | 498 SkScalar fPrevCenterX; |
488 SkScalar fPrevIntervalLength; | 499 SkScalar fPrevIntervalLength; |
489 typedef GrGLVertexEffect INHERITED; | 500 typedef GrGLGeometryProcessor INHERITED; |
490 }; | 501 }; |
491 | 502 |
492 GLDashingCircleEffect::GLDashingCircleEffect(const GrBackendEffectFactory& facto
ry, | 503 GLDashingCircleEffect::GLDashingCircleEffect(const GrBackendEffectFactory& facto
ry, |
493 const GrDrawEffect& drawEffect) | 504 const GrDrawEffect& drawEffect) |
494 : INHERITED (factory) { | 505 : INHERITED (factory) { |
495 fPrevRadius = SK_ScalarMin; | 506 fPrevRadius = SK_ScalarMin; |
496 fPrevCenterX = SK_ScalarMin; | 507 fPrevCenterX = SK_ScalarMin; |
497 fPrevIntervalLength = SK_ScalarMax; | 508 fPrevIntervalLength = SK_ScalarMax; |
498 } | 509 } |
499 | 510 |
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510 // the total interval length of the dash. | 521 // the total interval length of the dash. |
511 fParamUniform = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility
, | 522 fParamUniform = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility
, |
512 kVec3f_GrSLType, | 523 kVec3f_GrSLType, |
513 "params", | 524 "params", |
514 ¶mName); | 525 ¶mName); |
515 | 526 |
516 const char *vsCoordName, *fsCoordName; | 527 const char *vsCoordName, *fsCoordName; |
517 builder->addVarying(kVec2f_GrSLType, "Coord", &vsCoordName, &fsCoordName); | 528 builder->addVarying(kVec2f_GrSLType, "Coord", &vsCoordName, &fsCoordName); |
518 | 529 |
519 GrGLVertexShaderBuilder* vsBuilder = builder->getVertexShaderBuilder(); | 530 GrGLVertexShaderBuilder* vsBuilder = builder->getVertexShaderBuilder(); |
520 const SkString* attr0Name = | 531 vsBuilder->codeAppendf("\t%s = %s;\n", vsCoordName, dce.inCoord().c_str()); |
521 vsBuilder->getEffectAttributeName(drawEffect.getVertexAttribIndices()[0]
); | |
522 vsBuilder->codeAppendf("\t%s = %s;\n", vsCoordName, attr0Name->c_str()); | |
523 | 532 |
524 // transforms all points so that we can compare them to our test circle | 533 // transforms all points so that we can compare them to our test circle |
525 GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); | 534 GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
526 fsBuilder->codeAppendf("\t\tfloat xShifted = %s.x - floor(%s.x / %s.z) * %s.
z;\n", | 535 fsBuilder->codeAppendf("\t\tfloat xShifted = %s.x - floor(%s.x / %s.z) * %s.
z;\n", |
527 fsCoordName, fsCoordName, paramName, paramName); | 536 fsCoordName, fsCoordName, paramName, paramName); |
528 fsBuilder->codeAppendf("\t\tvec2 fragPosShifted = vec2(xShifted, %s.y);\n",
fsCoordName); | 537 fsBuilder->codeAppendf("\t\tvec2 fragPosShifted = vec2(xShifted, %s.y);\n",
fsCoordName); |
529 fsBuilder->codeAppendf("\t\tvec2 center = vec2(%s.y, 0.0);\n", paramName); | 538 fsBuilder->codeAppendf("\t\tvec2 center = vec2(%s.y, 0.0);\n", paramName); |
530 fsBuilder->codeAppend("\t\tfloat dist = length(center - fragPosShifted);\n")
; | 539 fsBuilder->codeAppend("\t\tfloat dist = length(center - fragPosShifted);\n")
; |
531 if (GrEffectEdgeTypeIsAA(dce.getEdgeType())) { | 540 if (GrEffectEdgeTypeIsAA(dce.getEdgeType())) { |
532 fsBuilder->codeAppendf("\t\tfloat diff = dist - %s.x;\n", paramName); | 541 fsBuilder->codeAppendf("\t\tfloat diff = dist - %s.x;\n", paramName); |
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575 void DashingCircleEffect::getConstantColorComponents(GrColor* color, uint32_t* v
alidFlags) const { | 584 void DashingCircleEffect::getConstantColorComponents(GrColor* color, uint32_t* v
alidFlags) const { |
576 *validFlags = 0; | 585 *validFlags = 0; |
577 } | 586 } |
578 | 587 |
579 const GrBackendEffectFactory& DashingCircleEffect::getFactory() const { | 588 const GrBackendEffectFactory& DashingCircleEffect::getFactory() const { |
580 return GrTBackendEffectFactory<DashingCircleEffect>::getInstance(); | 589 return GrTBackendEffectFactory<DashingCircleEffect>::getInstance(); |
581 } | 590 } |
582 | 591 |
583 DashingCircleEffect::DashingCircleEffect(GrEffectEdgeType edgeType, const DashIn
fo& info, | 592 DashingCircleEffect::DashingCircleEffect(GrEffectEdgeType edgeType, const DashIn
fo& info, |
584 SkScalar radius) | 593 SkScalar radius) |
585 : fEdgeType(edgeType) { | 594 : fEdgeType(edgeType) |
| 595 , fInCoord(this->addVertexAttrib(GrShaderVar("inCoord", |
| 596 kVec2f_GrSLType, |
| 597 GrShaderVar::kAttribute_TypeMod
ifier))) { |
586 SkScalar onLen = info.fIntervals[0]; | 598 SkScalar onLen = info.fIntervals[0]; |
587 SkScalar offLen = info.fIntervals[1]; | 599 SkScalar offLen = info.fIntervals[1]; |
588 fIntervalLength = onLen + offLen; | 600 fIntervalLength = onLen + offLen; |
589 fRadius = radius; | 601 fRadius = radius; |
590 fCenterX = SkScalarHalf(offLen); | 602 fCenterX = SkScalarHalf(offLen); |
591 | |
592 this->addVertexAttrib(kVec2f_GrSLType); | |
593 } | 603 } |
594 | 604 |
595 bool DashingCircleEffect::onIsEqual(const GrEffect& other) const { | 605 bool DashingCircleEffect::onIsEqual(const GrEffect& other) const { |
596 const DashingCircleEffect& dce = CastEffect<DashingCircleEffect>(other); | 606 const DashingCircleEffect& dce = CastEffect<DashingCircleEffect>(other); |
597 return (fEdgeType == dce.fEdgeType && | 607 return (fEdgeType == dce.fEdgeType && |
598 fIntervalLength == dce.fIntervalLength && | 608 fIntervalLength == dce.fIntervalLength && |
599 fRadius == dce.fRadius && | 609 fRadius == dce.fRadius && |
600 fCenterX == dce.fCenterX); | 610 fCenterX == dce.fCenterX); |
601 } | 611 } |
602 | 612 |
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628 | 638 |
629 /* | 639 /* |
630 * This effect will draw a dashed line. The width of the dash is given by the st
rokeWidth and the | 640 * This effect will draw a dashed line. The width of the dash is given by the st
rokeWidth and the |
631 * length and spacing by the DashInfo. Both of the previous two parameters are i
n device space. | 641 * length and spacing by the DashInfo. Both of the previous two parameters are i
n device space. |
632 * This effect also requires the setting of a vec2 vertex attribute for the the
four corners of the | 642 * This effect also requires the setting of a vec2 vertex attribute for the the
four corners of the |
633 * bounding rect. This attribute is the "dash position" of each vertex. In other
words it is the | 643 * bounding rect. This attribute is the "dash position" of each vertex. In other
words it is the |
634 * vertex coords (in device space) if we transform the line to be horizontal, wi
th the start of | 644 * vertex coords (in device space) if we transform the line to be horizontal, wi
th the start of |
635 * line at the origin then shifted to the right by half the off interval. The li
ne then goes in the | 645 * line at the origin then shifted to the right by half the off interval. The li
ne then goes in the |
636 * positive x direction. | 646 * positive x direction. |
637 */ | 647 */ |
638 class DashingLineEffect : public GrVertexEffect { | 648 class DashingLineEffect : public GrGeometryProcessor { |
639 public: | 649 public: |
640 typedef SkPathEffect::DashInfo DashInfo; | 650 typedef SkPathEffect::DashInfo DashInfo; |
641 | 651 |
642 static GrEffect* Create(GrEffectEdgeType edgeType, const DashInfo& info, SkS
calar strokeWidth); | 652 static GrEffect* Create(GrEffectEdgeType edgeType, const DashInfo& info, SkS
calar strokeWidth); |
643 | 653 |
644 virtual ~DashingLineEffect(); | 654 virtual ~DashingLineEffect(); |
645 | 655 |
646 static const char* Name() { return "DashingEffect"; } | 656 static const char* Name() { return "DashingEffect"; } |
647 | 657 |
| 658 const GrShaderVar& inCoord() const { return fInCoord; } |
| 659 |
648 GrEffectEdgeType getEdgeType() const { return fEdgeType; } | 660 GrEffectEdgeType getEdgeType() const { return fEdgeType; } |
649 | 661 |
650 const SkRect& getRect() const { return fRect; } | 662 const SkRect& getRect() const { return fRect; } |
651 | 663 |
652 SkScalar getIntervalLength() const { return fIntervalLength; } | 664 SkScalar getIntervalLength() const { return fIntervalLength; } |
653 | 665 |
654 typedef GLDashingLineEffect GLEffect; | 666 typedef GLDashingLineEffect GLEffect; |
655 | 667 |
656 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; | 668 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; |
657 | 669 |
658 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; | 670 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; |
659 | 671 |
660 private: | 672 private: |
661 DashingLineEffect(GrEffectEdgeType edgeType, const DashInfo& info, SkScalar
strokeWidth); | 673 DashingLineEffect(GrEffectEdgeType edgeType, const DashInfo& info, SkScalar
strokeWidth); |
662 | 674 |
663 virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE; | 675 virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE; |
664 | 676 |
665 GrEffectEdgeType fEdgeType; | 677 GrEffectEdgeType fEdgeType; |
| 678 const GrShaderVar& fInCoord; |
666 SkRect fRect; | 679 SkRect fRect; |
667 SkScalar fIntervalLength; | 680 SkScalar fIntervalLength; |
668 | 681 |
669 GR_DECLARE_EFFECT_TEST; | 682 GR_DECLARE_EFFECT_TEST; |
670 | 683 |
671 typedef GrVertexEffect INHERITED; | 684 typedef GrGeometryProcessor INHERITED; |
672 }; | 685 }; |
673 | 686 |
674 ////////////////////////////////////////////////////////////////////////////// | 687 ////////////////////////////////////////////////////////////////////////////// |
675 | 688 |
676 class GLDashingLineEffect : public GrGLVertexEffect { | 689 class GLDashingLineEffect : public GrGLGeometryProcessor { |
677 public: | 690 public: |
678 GLDashingLineEffect(const GrBackendEffectFactory&, const GrDrawEffect&); | 691 GLDashingLineEffect(const GrBackendEffectFactory&, const GrDrawEffect&); |
679 | 692 |
680 virtual void emitCode(GrGLFullProgramBuilder* builder, | 693 virtual void emitCode(GrGLFullProgramBuilder* builder, |
681 const GrDrawEffect& drawEffect, | 694 const GrDrawEffect& drawEffect, |
682 const GrEffectKey& key, | 695 const GrEffectKey& key, |
683 const char* outputColor, | 696 const char* outputColor, |
684 const char* inputColor, | 697 const char* inputColor, |
685 const TransformedCoordsArray&, | 698 const TransformedCoordsArray&, |
686 const TextureSamplerArray&) SK_OVERRIDE; | 699 const TextureSamplerArray&) SK_OVERRIDE; |
687 | 700 |
688 static inline void GenKey(const GrDrawEffect&, const GrGLCaps&, GrEffectKeyB
uilder*); | 701 static inline void GenKey(const GrDrawEffect&, const GrGLCaps&, GrEffectKeyB
uilder*); |
689 | 702 |
690 virtual void setData(const GrGLProgramDataManager&, const GrDrawEffect&) SK_
OVERRIDE; | 703 virtual void setData(const GrGLProgramDataManager&, const GrDrawEffect&) SK_
OVERRIDE; |
691 | 704 |
692 private: | 705 private: |
693 GrGLProgramDataManager::UniformHandle fRectUniform; | 706 GrGLProgramDataManager::UniformHandle fRectUniform; |
694 GrGLProgramDataManager::UniformHandle fIntervalUniform; | 707 GrGLProgramDataManager::UniformHandle fIntervalUniform; |
695 SkRect fPrevRect; | 708 SkRect fPrevRect; |
696 SkScalar fPrevIntervalLength; | 709 SkScalar fPrevIntervalLength; |
697 typedef GrGLVertexEffect INHERITED; | 710 typedef GrGLGeometryProcessor INHERITED; |
698 }; | 711 }; |
699 | 712 |
700 GLDashingLineEffect::GLDashingLineEffect(const GrBackendEffectFactory& factory, | 713 GLDashingLineEffect::GLDashingLineEffect(const GrBackendEffectFactory& factory, |
701 const GrDrawEffect& drawEffect) | 714 const GrDrawEffect& drawEffect) |
702 : INHERITED (factory) { | 715 : INHERITED (factory) { |
703 fPrevRect.fLeft = SK_ScalarNaN; | 716 fPrevRect.fLeft = SK_ScalarNaN; |
704 fPrevIntervalLength = SK_ScalarMax; | 717 fPrevIntervalLength = SK_ScalarMax; |
705 } | 718 } |
706 | 719 |
707 void GLDashingLineEffect::emitCode(GrGLFullProgramBuilder* builder, | 720 void GLDashingLineEffect::emitCode(GrGLFullProgramBuilder* builder, |
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722 const char *intervalName; | 735 const char *intervalName; |
723 // The interval uniform's refers to the total length of the interval (on + o
ff) | 736 // The interval uniform's refers to the total length of the interval (on + o
ff) |
724 fIntervalUniform = builder->addUniform(GrGLProgramBuilder::kFragment_Visibil
ity, | 737 fIntervalUniform = builder->addUniform(GrGLProgramBuilder::kFragment_Visibil
ity, |
725 kFloat_GrSLType, | 738 kFloat_GrSLType, |
726 "interval", | 739 "interval", |
727 &intervalName); | 740 &intervalName); |
728 | 741 |
729 const char *vsCoordName, *fsCoordName; | 742 const char *vsCoordName, *fsCoordName; |
730 builder->addVarying(kVec2f_GrSLType, "Coord", &vsCoordName, &fsCoordName); | 743 builder->addVarying(kVec2f_GrSLType, "Coord", &vsCoordName, &fsCoordName); |
731 GrGLVertexShaderBuilder* vsBuilder = builder->getVertexShaderBuilder(); | 744 GrGLVertexShaderBuilder* vsBuilder = builder->getVertexShaderBuilder(); |
732 const SkString* attr0Name = | 745 vsBuilder->codeAppendf("\t%s = %s;\n", vsCoordName, de.inCoord().c_str()); |
733 vsBuilder->getEffectAttributeName(drawEffect.getVertexAttribIndices()[0]
); | |
734 vsBuilder->codeAppendf("\t%s = %s;\n", vsCoordName, attr0Name->c_str()); | |
735 | 746 |
736 // transforms all points so that we can compare them to our test rect | 747 // transforms all points so that we can compare them to our test rect |
737 GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); | 748 GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
738 fsBuilder->codeAppendf("\t\tfloat xShifted = %s.x - floor(%s.x / %s) * %s;\n
", | 749 fsBuilder->codeAppendf("\t\tfloat xShifted = %s.x - floor(%s.x / %s) * %s;\n
", |
739 fsCoordName, fsCoordName, intervalName, intervalName)
; | 750 fsCoordName, fsCoordName, intervalName, intervalName)
; |
740 fsBuilder->codeAppendf("\t\tvec2 fragPosShifted = vec2(xShifted, %s.y);\n",
fsCoordName); | 751 fsBuilder->codeAppendf("\t\tvec2 fragPosShifted = vec2(xShifted, %s.y);\n",
fsCoordName); |
741 if (GrEffectEdgeTypeIsAA(de.getEdgeType())) { | 752 if (GrEffectEdgeTypeIsAA(de.getEdgeType())) { |
742 // The amount of coverage removed in x and y by the edges is computed as
a pair of negative | 753 // The amount of coverage removed in x and y by the edges is computed as
a pair of negative |
743 // numbers, xSub and ySub. | 754 // numbers, xSub and ySub. |
744 fsBuilder->codeAppend("\t\tfloat xSub, ySub;\n"); | 755 fsBuilder->codeAppend("\t\tfloat xSub, ySub;\n"); |
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794 void DashingLineEffect::getConstantColorComponents(GrColor* color, uint32_t* val
idFlags) const { | 805 void DashingLineEffect::getConstantColorComponents(GrColor* color, uint32_t* val
idFlags) const { |
795 *validFlags = 0; | 806 *validFlags = 0; |
796 } | 807 } |
797 | 808 |
798 const GrBackendEffectFactory& DashingLineEffect::getFactory() const { | 809 const GrBackendEffectFactory& DashingLineEffect::getFactory() const { |
799 return GrTBackendEffectFactory<DashingLineEffect>::getInstance(); | 810 return GrTBackendEffectFactory<DashingLineEffect>::getInstance(); |
800 } | 811 } |
801 | 812 |
802 DashingLineEffect::DashingLineEffect(GrEffectEdgeType edgeType, const DashInfo&
info, | 813 DashingLineEffect::DashingLineEffect(GrEffectEdgeType edgeType, const DashInfo&
info, |
803 SkScalar strokeWidth) | 814 SkScalar strokeWidth) |
804 : fEdgeType(edgeType) { | 815 : fEdgeType(edgeType) |
| 816 , fInCoord(this->addVertexAttrib(GrShaderVar("inCoord", |
| 817 kVec2f_GrSLType, |
| 818 GrShaderVar::kAttribute_TypeMod
ifier))) { |
805 SkScalar onLen = info.fIntervals[0]; | 819 SkScalar onLen = info.fIntervals[0]; |
806 SkScalar offLen = info.fIntervals[1]; | 820 SkScalar offLen = info.fIntervals[1]; |
807 SkScalar halfOffLen = SkScalarHalf(offLen); | 821 SkScalar halfOffLen = SkScalarHalf(offLen); |
808 SkScalar halfStroke = SkScalarHalf(strokeWidth); | 822 SkScalar halfStroke = SkScalarHalf(strokeWidth); |
809 fIntervalLength = onLen + offLen; | 823 fIntervalLength = onLen + offLen; |
810 fRect.set(halfOffLen, -halfStroke, halfOffLen + onLen, halfStroke); | 824 fRect.set(halfOffLen, -halfStroke, halfOffLen + onLen, halfStroke); |
811 | |
812 this->addVertexAttrib(kVec2f_GrSLType); | |
813 } | 825 } |
814 | 826 |
815 bool DashingLineEffect::onIsEqual(const GrEffect& other) const { | 827 bool DashingLineEffect::onIsEqual(const GrEffect& other) const { |
816 const DashingLineEffect& de = CastEffect<DashingLineEffect>(other); | 828 const DashingLineEffect& de = CastEffect<DashingLineEffect>(other); |
817 return (fEdgeType == de.fEdgeType && | 829 return (fEdgeType == de.fEdgeType && |
818 fRect == de.fRect && | 830 fRect == de.fRect && |
819 fIntervalLength == de.fIntervalLength); | 831 fIntervalLength == de.fIntervalLength); |
820 } | 832 } |
821 | 833 |
822 GR_DEFINE_EFFECT_TEST(DashingLineEffect); | 834 GR_DEFINE_EFFECT_TEST(DashingLineEffect); |
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848 switch (cap) { | 860 switch (cap) { |
849 case GrDashingEffect::kRound_DashCap: | 861 case GrDashingEffect::kRound_DashCap: |
850 return DashingCircleEffect::Create(edgeType, info, SkScalarHalf(stro
keWidth)); | 862 return DashingCircleEffect::Create(edgeType, info, SkScalarHalf(stro
keWidth)); |
851 case GrDashingEffect::kNonRound_DashCap: | 863 case GrDashingEffect::kNonRound_DashCap: |
852 return DashingLineEffect::Create(edgeType, info, strokeWidth); | 864 return DashingLineEffect::Create(edgeType, info, strokeWidth); |
853 default: | 865 default: |
854 SkFAIL("Unexpected dashed cap."); | 866 SkFAIL("Unexpected dashed cap."); |
855 } | 867 } |
856 return NULL; | 868 return NULL; |
857 } | 869 } |
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