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1 /* | 1 /* |
2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 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 "GrGLProgram.h" | 8 #include "GrGLProgram.h" |
9 | 9 |
10 #include "GrAllocator.h" | 10 #include "GrAllocator.h" |
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439 } | 439 } |
440 | 440 |
441 return true; | 441 return true; |
442 } | 442 } |
443 | 443 |
444 bool GrGLProgram::genProgram(const GrEffectStage* colorStages[], | 444 bool GrGLProgram::genProgram(const GrEffectStage* colorStages[], |
445 const GrEffectStage* coverageStages[]) { | 445 const GrEffectStage* coverageStages[]) { |
446 SkASSERT(0 == fProgramID); | 446 SkASSERT(0 == fProgramID); |
447 | 447 |
448 const GrGLProgramDesc::KeyHeader& header = fDesc.getHeader(); | 448 const GrGLProgramDesc::KeyHeader& header = fDesc.getHeader(); |
449 bool hasExplicitLocalCoords = -1 != header.fLocalCoordAttributeIndex; | |
450 | 449 |
451 // Get the coeffs for the Mode-based color filter, determine if color is nee
ded. | 450 bool needsVertexShader = true; |
452 SkXfermode::Coeff colorCoeff; | |
453 SkXfermode::Coeff filterColorCoeff; | |
454 SkAssertResult( | |
455 SkXfermode::ModeAsCoeff(static_cast<SkXfermode::Mode>(header.fColorFilte
rXfermode), | |
456 &filterColorCoeff, | |
457 &colorCoeff)); | |
458 bool needColor, needFilterColor; | |
459 need_blend_inputs(filterColorCoeff, colorCoeff, &needFilterColor, &needColor
); | |
460 | 451 |
461 // Create the GL effects. | 452 GrGLShaderBuilder builder(fGpu->ctxInfo(), fUniformManager, fDesc, needsVert
exShader); |
462 bool hasVertexShaderEffects = false; | |
463 | |
464 SkTArray<GrDrawEffect> colorDrawEffects(needColor ? fDesc.numColorEffects()
: 0); | |
465 if (needColor) { | |
466 this->buildGLEffects(&GrGLProgram::fColorEffects, colorStages, fDesc.num
ColorEffects(), | |
467 hasExplicitLocalCoords, &colorDrawEffects, &hasVert
exShaderEffects); | |
468 } | |
469 | |
470 SkTArray<GrDrawEffect> coverageDrawEffects(fDesc.numCoverageEffects()); | |
471 this->buildGLEffects(&GrGLProgram::fCoverageEffects, coverageStages, fDesc.n
umCoverageEffects(), | |
472 hasExplicitLocalCoords, &coverageDrawEffects, &hasVerte
xShaderEffects); | |
473 | |
474 GrGLShaderBuilder builder(fGpu->ctxInfo(), fUniformManager, fDesc, hasVertex
ShaderEffects); | |
475 | 453 |
476 if (GrGLShaderBuilder::VertexBuilder* vertexBuilder = builder.getVertexBuild
er()) { | 454 if (GrGLShaderBuilder::VertexBuilder* vertexBuilder = builder.getVertexBuild
er()) { |
477 const char* viewMName; | 455 const char* viewMName; |
478 fUniformHandles.fViewMatrixUni = builder.addUniform(GrGLShaderBuilder::k
Vertex_Visibility, | 456 fUniformHandles.fViewMatrixUni = builder.addUniform(GrGLShaderBuilder::k
Vertex_Visibility, |
479 kMat33f_GrSLType, "V
iewM", &viewMName); | 457 kMat33f_GrSLType, "V
iewM", &viewMName); |
480 | 458 |
481 vertexBuilder->vsCodeAppendf("\tvec3 pos3 = %s * vec3(%s, 1);\n" | 459 vertexBuilder->vsCodeAppendf("\tvec3 pos3 = %s * vec3(%s, 1);\n" |
482 "\tgl_Position = vec4(pos3.xy, 0, pos3.z);\
n", | 460 "\tgl_Position = vec4(pos3.xy, 0, pos3.z);\
n", |
483 viewMName, vertexBuilder->positionAttribute
().c_str()); | 461 viewMName, vertexBuilder->positionAttribute
().c_str()); |
484 | 462 |
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501 declared_color_output_name(), | 479 declared_color_output_name(), |
502 &colorOutput); | 480 &colorOutput); |
503 if (isColorDeclared) { | 481 if (isColorDeclared) { |
504 builder.fsOutputAppend(colorOutput); | 482 builder.fsOutputAppend(colorOutput); |
505 } | 483 } |
506 | 484 |
507 // incoming color to current stage being processed. | 485 // incoming color to current stage being processed. |
508 SkString inColor; | 486 SkString inColor; |
509 GrSLConstantVec knownColorValue = this->genInputColor(&builder, &inColor); | 487 GrSLConstantVec knownColorValue = this->genInputColor(&builder, &inColor); |
510 | 488 |
| 489 // Get the coeffs for the Mode-based color filter, determine if color is nee
ded. |
| 490 SkXfermode::Coeff colorCoeff; |
| 491 SkXfermode::Coeff filterColorCoeff; |
| 492 SkAssertResult( |
| 493 SkXfermode::ModeAsCoeff(static_cast<SkXfermode::Mode>(header.fColorFilte
rXfermode), |
| 494 &filterColorCoeff, |
| 495 &colorCoeff)); |
| 496 bool needColor, needFilterColor; |
| 497 need_blend_inputs(filterColorCoeff, colorCoeff, &needFilterColor, &needColor
); |
| 498 |
511 // used in order for builder to return the per-stage uniform handles. | 499 // used in order for builder to return the per-stage uniform handles. |
512 typedef SkTArray<GrGLUniformManager::UniformHandle, true>* UniHandleArrayPtr
; | 500 typedef SkTArray<GrGLUniformManager::UniformHandle, true>* UniHandleArrayPtr
; |
513 int maxColorOrCovEffectCnt = GrMax(fDesc.numColorEffects(), fDesc.numCoverag
eEffects()); | 501 int maxColorOrCovEffectCnt = GrMax(fDesc.numColorEffects(), fDesc.numCoverag
eEffects()); |
514 SkAutoTArray<UniHandleArrayPtr> effectUniformArrays(maxColorOrCovEffectCnt); | 502 SkAutoTArray<UniHandleArrayPtr> effectUniformArrays(maxColorOrCovEffectCnt); |
515 SkAutoTArray<GrGLEffect*> glEffects(maxColorOrCovEffectCnt); | 503 SkAutoTArray<GrGLEffect*> glEffects(maxColorOrCovEffectCnt); |
516 | 504 |
517 if (needColor) { | 505 if (needColor) { |
518 for (int e = 0; e < fDesc.numColorEffects(); ++e) { | 506 for (int e = 0; e < fDesc.numColorEffects(); ++e) { |
519 glEffects[e] = fColorEffects[e].fGLEffect; | |
520 effectUniformArrays[e] = &fColorEffects[e].fSamplerUnis; | 507 effectUniformArrays[e] = &fColorEffects[e].fSamplerUnis; |
521 } | 508 } |
522 | 509 |
523 builder.emitEffects(glEffects.get(), | 510 builder.emitEffects(colorStages, |
524 colorDrawEffects.begin(), | |
525 fDesc.effectKeys(), | 511 fDesc.effectKeys(), |
526 fDesc.numColorEffects(), | 512 fDesc.numColorEffects(), |
527 &inColor, | 513 &inColor, |
528 &knownColorValue, | 514 &knownColorValue, |
529 effectUniformArrays.get()); | 515 effectUniformArrays.get(), |
| 516 glEffects.get()); |
| 517 |
| 518 for (int e = 0; e < fDesc.numColorEffects(); ++e) { |
| 519 fColorEffects[e].fGLEffect = glEffects[e]; |
| 520 } |
530 } | 521 } |
531 | 522 |
532 // Insert the color filter. This will soon be replaced by a color effect. | 523 // Insert the color filter. This will soon be replaced by a color effect. |
533 if (SkXfermode::kDst_Mode != header.fColorFilterXfermode) { | 524 if (SkXfermode::kDst_Mode != header.fColorFilterXfermode) { |
534 const char* colorFilterColorUniName = NULL; | 525 const char* colorFilterColorUniName = NULL; |
535 fUniformHandles.fColorFilterUni = builder.addUniform(GrGLShaderBuilder::
kFragment_Visibility, | 526 fUniformHandles.fColorFilterUni = builder.addUniform(GrGLShaderBuilder::
kFragment_Visibility, |
536 kVec4f_GrSLType, "F
ilterColor", | 527 kVec4f_GrSLType, "F
ilterColor", |
537 &colorFilterColorUn
iName); | 528 &colorFilterColorUn
iName); |
538 | 529 |
539 builder.fsCodeAppend("\tvec4 filteredColor;\n"); | 530 builder.fsCodeAppend("\tvec4 filteredColor;\n"); |
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550 colorCoeff, colorFilterColorUniName, color); | 541 colorCoeff, colorFilterColorUniName, color); |
551 inColor = "filteredColor"; | 542 inColor = "filteredColor"; |
552 } | 543 } |
553 | 544 |
554 /////////////////////////////////////////////////////////////////////////// | 545 /////////////////////////////////////////////////////////////////////////// |
555 // compute the partial coverage | 546 // compute the partial coverage |
556 SkString inCoverage; | 547 SkString inCoverage; |
557 GrSLConstantVec knownCoverageValue = this->genInputCoverage(&builder, &inCov
erage); | 548 GrSLConstantVec knownCoverageValue = this->genInputCoverage(&builder, &inCov
erage); |
558 | 549 |
559 for (int e = 0; e < fDesc.numCoverageEffects(); ++e) { | 550 for (int e = 0; e < fDesc.numCoverageEffects(); ++e) { |
560 glEffects[e] = fCoverageEffects[e].fGLEffect; | |
561 effectUniformArrays[e] = &fCoverageEffects[e].fSamplerUnis; | 551 effectUniformArrays[e] = &fCoverageEffects[e].fSamplerUnis; |
562 } | 552 } |
563 | 553 |
564 builder.emitEffects(glEffects.get(), | 554 builder.emitEffects(coverageStages, |
565 coverageDrawEffects.begin(), | |
566 fDesc.getEffectKeys() + fDesc.numColorEffects(), | 555 fDesc.getEffectKeys() + fDesc.numColorEffects(), |
567 fDesc.numCoverageEffects(), | 556 fDesc.numCoverageEffects(), |
568 &inCoverage, | 557 &inCoverage, |
569 &knownCoverageValue, | 558 &knownCoverageValue, |
570 effectUniformArrays.get()); | 559 effectUniformArrays.get(), |
| 560 glEffects.get()); |
| 561 for (int e = 0; e < fDesc.numCoverageEffects(); ++e) { |
| 562 fCoverageEffects[e].fGLEffect = glEffects[e]; |
| 563 } |
571 | 564 |
572 // discard if coverage is zero | 565 // discard if coverage is zero |
573 if (header.fDiscardIfZeroCoverage && kOnes_GrSLConstantVec != knownCoverageV
alue) { | 566 if (header.fDiscardIfZeroCoverage && kOnes_GrSLConstantVec != knownCoverageV
alue) { |
574 if (kZeros_GrSLConstantVec == knownCoverageValue) { | 567 if (kZeros_GrSLConstantVec == knownCoverageValue) { |
575 // This is unfortunate. | 568 // This is unfortunate. |
576 builder.fsCodeAppend("\tdiscard;\n"); | 569 builder.fsCodeAppend("\tdiscard;\n"); |
577 } else { | 570 } else { |
578 builder.fsCodeAppendf("\tif (all(lessThanEqual(%s, vec4(0.0)))) {\n\
t\tdiscard;\n\t}\n", | 571 builder.fsCodeAppendf("\tif (all(lessThanEqual(%s, vec4(0.0)))) {\n\
t\tdiscard;\n\t}\n", |
579 inCoverage.c_str()); | 572 inCoverage.c_str()); |
580 } | 573 } |
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689 fUniformHandles.fRTHeightUni = builder.getRTHeightUniform(); | 682 fUniformHandles.fRTHeightUni = builder.getRTHeightUniform(); |
690 fUniformHandles.fDstCopyTopLeftUni = builder.getDstCopyTopLeftUniform(); | 683 fUniformHandles.fDstCopyTopLeftUni = builder.getDstCopyTopLeftUniform(); |
691 fUniformHandles.fDstCopyScaleUni = builder.getDstCopyScaleUniform(); | 684 fUniformHandles.fDstCopyScaleUni = builder.getDstCopyScaleUniform(); |
692 fUniformHandles.fDstCopySamplerUni = builder.getDstCopySamplerUniform(); | 685 fUniformHandles.fDstCopySamplerUni = builder.getDstCopySamplerUniform(); |
693 // This must be called after we set fDstCopySamplerUni above. | 686 // This must be called after we set fDstCopySamplerUni above. |
694 this->initSamplerUniforms(); | 687 this->initSamplerUniforms(); |
695 | 688 |
696 return true; | 689 return true; |
697 } | 690 } |
698 | 691 |
699 void GrGLProgram::buildGLEffects(SkTArray<EffectAndSamplers> GrGLProgram::* effe
ctSet, | |
700 const GrEffectStage* stages[], | |
701 int count, | |
702 bool hasExplicitLocalCoords, | |
703 SkTArray<GrDrawEffect>* drawEffects, | |
704 bool* hasVertexShaderEffects) { | |
705 for (int e = 0; e < count; ++e) { | |
706 SkASSERT(NULL != stages[e] && NULL != stages[e]->getEffect()); | |
707 | |
708 const GrEffectStage& stage = *stages[e]; | |
709 SkNEW_APPEND_TO_TARRAY(drawEffects, GrDrawEffect, (stage, hasExplicitLoc
alCoords)); | |
710 | |
711 const GrDrawEffect& drawEffect = (*drawEffects)[e]; | |
712 GrGLEffect* effect = (this->*effectSet)[e].fGLEffect = | |
713 (*stage.getEffect())->getFactory().createGLInstance(drawEffect); | |
714 | |
715 if (!*hasVertexShaderEffects && effect->requiresVertexShader(drawEffect)
) { | |
716 *hasVertexShaderEffects = true; | |
717 } | |
718 } | |
719 } | |
720 | |
721 bool GrGLProgram::bindOutputsAttribsAndLinkProgram(const GrGLShaderBuilder& buil
der, | 692 bool GrGLProgram::bindOutputsAttribsAndLinkProgram(const GrGLShaderBuilder& buil
der, |
722 bool bindColorOut, | 693 bool bindColorOut, |
723 bool bindDualSrcOut) { | 694 bool bindDualSrcOut) { |
724 GL_CALL_RET(fProgramID, CreateProgram()); | 695 GL_CALL_RET(fProgramID, CreateProgram()); |
725 if (!fProgramID) { | 696 if (!fProgramID) { |
726 return false; | 697 return false; |
727 } | 698 } |
728 | 699 |
729 if (fVShaderID) { | 700 if (fVShaderID) { |
730 GL_CALL(AttachShader(fProgramID, fVShaderID)); | 701 GL_CALL(AttachShader(fProgramID, fVShaderID)); |
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1012 | 983 |
1013 fMatrixState.fViewMatrix = drawState.getViewMatrix(); | 984 fMatrixState.fViewMatrix = drawState.getViewMatrix(); |
1014 fMatrixState.fRenderTargetSize = size; | 985 fMatrixState.fRenderTargetSize = size; |
1015 fMatrixState.fRenderTargetOrigin = rt->origin(); | 986 fMatrixState.fRenderTargetOrigin = rt->origin(); |
1016 | 987 |
1017 GrGLfloat viewMatrix[3 * 3]; | 988 GrGLfloat viewMatrix[3 * 3]; |
1018 fMatrixState.getGLMatrix<3>(viewMatrix); | 989 fMatrixState.getGLMatrix<3>(viewMatrix); |
1019 fUniformManager.setMatrix3f(fUniformHandles.fViewMatrixUni, viewMatrix); | 990 fUniformManager.setMatrix3f(fUniformHandles.fViewMatrixUni, viewMatrix); |
1020 } | 991 } |
1021 } | 992 } |
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