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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 const bool hasExplicitLocalCoords = -1 != header.fLocalCoordAttributeIndex; | |
449 | 450 |
450 bool needsVertexShader = true; | 451 // Get the coeffs for the Mode-based color filter, determine if color is nee ded. |
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 ); | |
451 | 460 |
452 GrGLShaderBuilder builder(fGpu->ctxInfo(), fUniformManager, fDesc, needsVert exShader); | 461 // Create the GL effects. |
462 bool requiresVertexShader = true; | |
463 | |
464 SkTArray<GrDrawEffect> colorDrawEffects(needColor ? fDesc.numColorEffects() : 0); | |
bsalomon
2013/09/06 14:10:03
A couple small style things.. we try to wrap at 10
Chris Dalton
2013/09/06 17:17:24
Will do.
| |
465 if (needColor) { | |
466 for (int e = 0; e < fDesc.numColorEffects(); ++e) { | |
467 SkASSERT(NULL != colorStages[e] && NULL != colorStages[e]->getEffect ()); | |
468 SkNEW_APPEND_TO_TARRAY(&colorDrawEffects, GrDrawEffect, (*colorStage s[e], hasExplicitLocalCoords)); | |
469 fColorEffects[e].fGLEffect = | |
470 (*colorStages[e]->getEffect())->getFactory().createGLInstance(co lorDrawEffects[e]); | |
471 requiresVertexShader = requiresVertexShader | |
472 || fColorEffects[e].fGLEffect->requiresVertex Shader(colorDrawEffects[e]); | |
473 } | |
474 } | |
475 | |
476 SkTArray<GrDrawEffect> coverageDrawEffects(fDesc.numCoverageEffects()); | |
477 for (int e = 0; e < fDesc.numCoverageEffects(); ++e) { | |
478 SkASSERT(NULL != coverageStages[e] && NULL != coverageStages[e]->getEffe ct()); | |
479 SkNEW_APPEND_TO_TARRAY(&coverageDrawEffects, GrDrawEffect, (*coverageSta ges[e], hasExplicitLocalCoords)); | |
480 fCoverageEffects[e].fGLEffect = | |
481 (*coverageStages[e]->getEffect())->getFactory().createGLInstance(cov erageDrawEffects[e]); | |
482 requiresVertexShader = requiresVertexShader | |
483 || fCoverageEffects[e].fGLEffect->requiresVertexS hader(coverageDrawEffects[e]);; | |
484 } | |
485 | |
486 GrGLShaderBuilder builder(fGpu->ctxInfo(), fUniformManager, fDesc, requiresV ertexShader); | |
453 | 487 |
454 if (GrGLShaderBuilder::VertexBuilder* vertexBuilder = builder.getVertexBuild er()) { | 488 if (GrGLShaderBuilder::VertexBuilder* vertexBuilder = builder.getVertexBuild er()) { |
455 const char* viewMName; | 489 const char* viewMName; |
456 fUniformHandles.fViewMatrixUni = builder.addUniform(GrGLShaderBuilder::k Vertex_Visibility, | 490 fUniformHandles.fViewMatrixUni = builder.addUniform(GrGLShaderBuilder::k Vertex_Visibility, |
457 kMat33f_GrSLType, "V iewM", &viewMName); | 491 kMat33f_GrSLType, "V iewM", &viewMName); |
458 | 492 |
459 vertexBuilder->vsCodeAppendf("\tvec3 pos3 = %s * vec3(%s, 1);\n" | 493 vertexBuilder->vsCodeAppendf("\tvec3 pos3 = %s * vec3(%s, 1);\n" |
460 "\tgl_Position = vec4(pos3.xy, 0, pos3.z);\ n", | 494 "\tgl_Position = vec4(pos3.xy, 0, pos3.z);\ n", |
461 viewMName, vertexBuilder->positionAttribute ().c_str()); | 495 viewMName, vertexBuilder->positionAttribute ().c_str()); |
462 | 496 |
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479 declared_color_output_name(), | 513 declared_color_output_name(), |
480 &colorOutput); | 514 &colorOutput); |
481 if (isColorDeclared) { | 515 if (isColorDeclared) { |
482 builder.fsOutputAppend(colorOutput); | 516 builder.fsOutputAppend(colorOutput); |
483 } | 517 } |
484 | 518 |
485 // incoming color to current stage being processed. | 519 // incoming color to current stage being processed. |
486 SkString inColor; | 520 SkString inColor; |
487 GrSLConstantVec knownColorValue = this->genInputColor(&builder, &inColor); | 521 GrSLConstantVec knownColorValue = this->genInputColor(&builder, &inColor); |
488 | 522 |
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 | |
499 // used in order for builder to return the per-stage uniform handles. | 523 // used in order for builder to return the per-stage uniform handles. |
500 typedef SkTArray<GrGLUniformManager::UniformHandle, true>* UniHandleArrayPtr ; | 524 typedef SkTArray<GrGLUniformManager::UniformHandle, true>* UniHandleArrayPtr ; |
501 int maxColorOrCovEffectCnt = GrMax(fDesc.numColorEffects(), fDesc.numCoverag eEffects()); | 525 int maxColorOrCovEffectCnt = GrMax(fDesc.numColorEffects(), fDesc.numCoverag eEffects()); |
502 SkAutoTArray<UniHandleArrayPtr> effectUniformArrays(maxColorOrCovEffectCnt); | 526 SkAutoTArray<UniHandleArrayPtr> effectUniformArrays(maxColorOrCovEffectCnt); |
503 SkAutoTArray<GrGLEffect*> glEffects(maxColorOrCovEffectCnt); | 527 SkAutoTArray<GrGLEffect*> glEffects(maxColorOrCovEffectCnt); |
504 | 528 |
505 if (needColor) { | 529 if (needColor) { |
506 for (int e = 0; e < fDesc.numColorEffects(); ++e) { | 530 for (int e = 0; e < fDesc.numColorEffects(); ++e) { |
531 glEffects[e] = fColorEffects[e].fGLEffect; | |
507 effectUniformArrays[e] = &fColorEffects[e].fSamplerUnis; | 532 effectUniformArrays[e] = &fColorEffects[e].fSamplerUnis; |
508 } | 533 } |
509 | 534 |
510 builder.emitEffects(colorStages, | 535 builder.emitEffects(glEffects.get(), |
536 colorDrawEffects.begin(), | |
511 fDesc.effectKeys(), | 537 fDesc.effectKeys(), |
512 fDesc.numColorEffects(), | 538 fDesc.numColorEffects(), |
513 &inColor, | 539 &inColor, |
514 &knownColorValue, | 540 &knownColorValue, |
515 effectUniformArrays.get(), | 541 effectUniformArrays.get()); |
516 glEffects.get()); | |
517 | |
518 for (int e = 0; e < fDesc.numColorEffects(); ++e) { | |
519 fColorEffects[e].fGLEffect = glEffects[e]; | |
520 } | |
521 } | 542 } |
522 | 543 |
523 // Insert the color filter. This will soon be replaced by a color effect. | 544 // Insert the color filter. This will soon be replaced by a color effect. |
524 if (SkXfermode::kDst_Mode != header.fColorFilterXfermode) { | 545 if (SkXfermode::kDst_Mode != header.fColorFilterXfermode) { |
525 const char* colorFilterColorUniName = NULL; | 546 const char* colorFilterColorUniName = NULL; |
526 fUniformHandles.fColorFilterUni = builder.addUniform(GrGLShaderBuilder:: kFragment_Visibility, | 547 fUniformHandles.fColorFilterUni = builder.addUniform(GrGLShaderBuilder:: kFragment_Visibility, |
527 kVec4f_GrSLType, "F ilterColor", | 548 kVec4f_GrSLType, "F ilterColor", |
528 &colorFilterColorUn iName); | 549 &colorFilterColorUn iName); |
529 | 550 |
530 builder.fsCodeAppend("\tvec4 filteredColor;\n"); | 551 builder.fsCodeAppend("\tvec4 filteredColor;\n"); |
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541 colorCoeff, colorFilterColorUniName, color); | 562 colorCoeff, colorFilterColorUniName, color); |
542 inColor = "filteredColor"; | 563 inColor = "filteredColor"; |
543 } | 564 } |
544 | 565 |
545 /////////////////////////////////////////////////////////////////////////// | 566 /////////////////////////////////////////////////////////////////////////// |
546 // compute the partial coverage | 567 // compute the partial coverage |
547 SkString inCoverage; | 568 SkString inCoverage; |
548 GrSLConstantVec knownCoverageValue = this->genInputCoverage(&builder, &inCov erage); | 569 GrSLConstantVec knownCoverageValue = this->genInputCoverage(&builder, &inCov erage); |
549 | 570 |
550 for (int e = 0; e < fDesc.numCoverageEffects(); ++e) { | 571 for (int e = 0; e < fDesc.numCoverageEffects(); ++e) { |
572 glEffects[e] = fCoverageEffects[e].fGLEffect; | |
551 effectUniformArrays[e] = &fCoverageEffects[e].fSamplerUnis; | 573 effectUniformArrays[e] = &fCoverageEffects[e].fSamplerUnis; |
552 } | 574 } |
553 | 575 |
554 builder.emitEffects(coverageStages, | 576 builder.emitEffects(glEffects.get(), |
577 coverageDrawEffects.begin(), | |
555 fDesc.getEffectKeys() + fDesc.numColorEffects(), | 578 fDesc.getEffectKeys() + fDesc.numColorEffects(), |
556 fDesc.numCoverageEffects(), | 579 fDesc.numCoverageEffects(), |
557 &inCoverage, | 580 &inCoverage, |
558 &knownCoverageValue, | 581 &knownCoverageValue, |
559 effectUniformArrays.get(), | 582 effectUniformArrays.get()); |
560 glEffects.get()); | |
561 for (int e = 0; e < fDesc.numCoverageEffects(); ++e) { | |
562 fCoverageEffects[e].fGLEffect = glEffects[e]; | |
563 } | |
564 | 583 |
565 // discard if coverage is zero | 584 // discard if coverage is zero |
566 if (header.fDiscardIfZeroCoverage && kOnes_GrSLConstantVec != knownCoverageV alue) { | 585 if (header.fDiscardIfZeroCoverage && kOnes_GrSLConstantVec != knownCoverageV alue) { |
567 if (kZeros_GrSLConstantVec == knownCoverageValue) { | 586 if (kZeros_GrSLConstantVec == knownCoverageValue) { |
568 // This is unfortunate. | 587 // This is unfortunate. |
569 builder.fsCodeAppend("\tdiscard;\n"); | 588 builder.fsCodeAppend("\tdiscard;\n"); |
570 } else { | 589 } else { |
571 builder.fsCodeAppendf("\tif (all(lessThanEqual(%s, vec4(0.0)))) {\n\ t\tdiscard;\n\t}\n", | 590 builder.fsCodeAppendf("\tif (all(lessThanEqual(%s, vec4(0.0)))) {\n\ t\tdiscard;\n\t}\n", |
572 inCoverage.c_str()); | 591 inCoverage.c_str()); |
573 } | 592 } |
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983 | 1002 |
984 fMatrixState.fViewMatrix = drawState.getViewMatrix(); | 1003 fMatrixState.fViewMatrix = drawState.getViewMatrix(); |
985 fMatrixState.fRenderTargetSize = size; | 1004 fMatrixState.fRenderTargetSize = size; |
986 fMatrixState.fRenderTargetOrigin = rt->origin(); | 1005 fMatrixState.fRenderTargetOrigin = rt->origin(); |
987 | 1006 |
988 GrGLfloat viewMatrix[3 * 3]; | 1007 GrGLfloat viewMatrix[3 * 3]; |
989 fMatrixState.getGLMatrix<3>(viewMatrix); | 1008 fMatrixState.getGLMatrix<3>(viewMatrix); |
990 fUniformManager.setMatrix3f(fUniformHandles.fViewMatrixUni, viewMatrix); | 1009 fUniformManager.setMatrix3f(fUniformHandles.fViewMatrixUni, viewMatrix); |
991 } | 1010 } |
992 } | 1011 } |
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