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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 "SkDisplacementMapEffect.h" | 8 #include "SkDisplacementMapEffect.h" |
9 #include "SkDevice.h" | 9 #include "SkDevice.h" |
10 #include "SkReadBuffer.h" | 10 #include "SkReadBuffer.h" |
11 #include "SkWriteBuffer.h" | 11 #include "SkWriteBuffer.h" |
12 #include "SkUnPreMultiply.h" | 12 #include "SkUnPreMultiply.h" |
13 #include "SkColorPriv.h" | 13 #include "SkColorPriv.h" |
14 #if SK_SUPPORT_GPU | 14 #if SK_SUPPORT_GPU |
15 #include "GrContext.h" | 15 #include "GrContext.h" |
16 #include "GrDrawContext.h" | 16 #include "GrDrawContext.h" |
17 #include "GrCoordTransform.h" | 17 #include "GrCoordTransform.h" |
18 #include "GrInvariantOutput.h" | 18 #include "GrInvariantOutput.h" |
19 #include "effects/GrTextureDomain.h" | 19 #include "effects/GrTextureDomain.h" |
20 #include "glsl/GrGLSLFragmentProcessor.h" | 20 #include "glsl/GrGLSLFragmentProcessor.h" |
21 #include "glsl/GrGLSLFragmentShaderBuilder.h" | 21 #include "glsl/GrGLSLFragmentShaderBuilder.h" |
22 #include "glsl/GrGLSLProgramBuilder.h" | |
23 #include "glsl/GrGLSLProgramDataManager.h" | 22 #include "glsl/GrGLSLProgramDataManager.h" |
| 23 #include "glsl/GrGLSLUniformHandler.h" |
24 #endif | 24 #endif |
25 | 25 |
26 namespace { | 26 namespace { |
27 | 27 |
28 #define kChannelSelectorKeyBits 3; // Max value is 4, so 3 bits are required at
most | 28 #define kChannelSelectorKeyBits 3; // Max value is 4, so 3 bits are required at
most |
29 | 29 |
30 template<SkDisplacementMapEffect::ChannelSelectorType type> | 30 template<SkDisplacementMapEffect::ChannelSelectorType type> |
31 uint32_t getValue(SkColor, const SkUnPreMultiply::Scale*) { | 31 uint32_t getValue(SkColor, const SkUnPreMultiply::Scale*) { |
32 SkDEBUGFAIL("Unknown channel selector"); | 32 SkDEBUGFAIL("Unknown channel selector"); |
33 return 0; | 33 return 0; |
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542 : fXChannelSelector(proc.cast<GrDisplacementMapEffect>().xChannelSelector()) | 542 : fXChannelSelector(proc.cast<GrDisplacementMapEffect>().xChannelSelector()) |
543 , fYChannelSelector(proc.cast<GrDisplacementMapEffect>().yChannelSelector())
{ | 543 , fYChannelSelector(proc.cast<GrDisplacementMapEffect>().yChannelSelector())
{ |
544 } | 544 } |
545 | 545 |
546 GrGLDisplacementMapEffect::~GrGLDisplacementMapEffect() { | 546 GrGLDisplacementMapEffect::~GrGLDisplacementMapEffect() { |
547 } | 547 } |
548 | 548 |
549 void GrGLDisplacementMapEffect::emitCode(EmitArgs& args) { | 549 void GrGLDisplacementMapEffect::emitCode(EmitArgs& args) { |
550 const GrTextureDomain& domain = args.fFp.cast<GrDisplacementMapEffect>().dom
ain(); | 550 const GrTextureDomain& domain = args.fFp.cast<GrDisplacementMapEffect>().dom
ain(); |
551 | 551 |
552 fScaleUni = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragment_Visibi
lity, | 552 fScaleUni = args.fUniformHandler->addUniform(GrGLSLUniformHandler::kFragment
_Visibility, |
553 kVec2f_GrSLType, kDefault_GrSLPrecisio
n, "Scale"); | 553 kVec2f_GrSLType, kDefault_GrSLP
recision, "Scale"); |
554 const char* scaleUni = args.fBuilder->getUniformCStr(fScaleUni); | 554 const char* scaleUni = args.fUniformHandler->getUniformCStr(fScaleUni); |
555 const char* dColor = "dColor"; | 555 const char* dColor = "dColor"; |
556 const char* cCoords = "cCoords"; | 556 const char* cCoords = "cCoords"; |
557 const char* nearZero = "1e-6"; // Since 6.10352e−5 is the smallest half floa
t, use | 557 const char* nearZero = "1e-6"; // Since 6.10352e−5 is the smallest half floa
t, use |
558 // a number smaller than that to approximate
0, but | 558 // a number smaller than that to approximate
0, but |
559 // leave room for 32-bit float GPU rounding e
rrors. | 559 // leave room for 32-bit float GPU rounding e
rrors. |
560 | 560 |
561 GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder; | 561 GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder; |
562 fragBuilder->codeAppendf("\t\tvec4 %s = ", dColor); | 562 fragBuilder->codeAppendf("\t\tvec4 %s = ", dColor); |
563 fragBuilder->appendTextureLookup(args.fSamplers[0], args.fCoords[0].c_str(), | 563 fragBuilder->appendTextureLookup(args.fSamplers[0], args.fCoords[0].c_str(), |
564 args.fCoords[0].getType()); | 564 args.fCoords[0].getType()); |
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603 case SkDisplacementMapEffect::kA_ChannelSelectorType: | 603 case SkDisplacementMapEffect::kA_ChannelSelectorType: |
604 fragBuilder->codeAppend("a"); | 604 fragBuilder->codeAppend("a"); |
605 break; | 605 break; |
606 case SkDisplacementMapEffect::kUnknown_ChannelSelectorType: | 606 case SkDisplacementMapEffect::kUnknown_ChannelSelectorType: |
607 default: | 607 default: |
608 SkDEBUGFAIL("Unknown Y channel selector"); | 608 SkDEBUGFAIL("Unknown Y channel selector"); |
609 } | 609 } |
610 fragBuilder->codeAppend("-vec2(0.5));\t\t"); | 610 fragBuilder->codeAppend("-vec2(0.5));\t\t"); |
611 | 611 |
612 fGLDomain.sampleTexture(fragBuilder, | 612 fGLDomain.sampleTexture(fragBuilder, |
| 613 args.fUniformHandler, |
613 args.fGLSLCaps, | 614 args.fGLSLCaps, |
614 domain, | 615 domain, |
615 args.fOutputColor, | 616 args.fOutputColor, |
616 SkString(cCoords), | 617 SkString(cCoords), |
617 args.fSamplers[1]); | 618 args.fSamplers[1]); |
618 fragBuilder->codeAppend(";\n"); | 619 fragBuilder->codeAppend(";\n"); |
619 } | 620 } |
620 | 621 |
621 void GrGLDisplacementMapEffect::onSetData(const GrGLSLProgramDataManager& pdman, | 622 void GrGLDisplacementMapEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
622 const GrProcessor& proc) { | 623 const GrProcessor& proc) { |
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634 const GrGLSLCaps&, GrProcessorKeyBuilder*
b) { | 635 const GrGLSLCaps&, GrProcessorKeyBuilder*
b) { |
635 const GrDisplacementMapEffect& displacementMap = proc.cast<GrDisplacementMap
Effect>(); | 636 const GrDisplacementMapEffect& displacementMap = proc.cast<GrDisplacementMap
Effect>(); |
636 | 637 |
637 uint32_t xKey = displacementMap.xChannelSelector(); | 638 uint32_t xKey = displacementMap.xChannelSelector(); |
638 uint32_t yKey = displacementMap.yChannelSelector() << kChannelSelectorKeyBit
s; | 639 uint32_t yKey = displacementMap.yChannelSelector() << kChannelSelectorKeyBit
s; |
639 | 640 |
640 b->add32(xKey | yKey); | 641 b->add32(xKey | yKey); |
641 } | 642 } |
642 #endif | 643 #endif |
643 | 644 |
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