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Side by Side Diff: src/effects/SkColorMatrixFilter.cpp

Issue 1438003003: Move all ShaderBuilder files to GLSL (Closed) Base URL: https://skia.googlesource.com/skia.git@glslProgBuild
Patch Set: nits Created 5 years, 1 month ago
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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 "SkColorMatrixFilter.h" 8 #include "SkColorMatrixFilter.h"
9 #include "SkColorMatrix.h" 9 #include "SkColorMatrix.h"
10 #include "SkColorPriv.h" 10 #include "SkColorPriv.h"
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379 SkColorMatrix::SetConcat(concat, fMatrix.fMat, innerMatrix); 379 SkColorMatrix::SetConcat(concat, fMatrix.fMat, innerMatrix);
380 return SkColorMatrixFilter::Create(concat); 380 return SkColorMatrixFilter::Create(concat);
381 } 381 }
382 return nullptr; 382 return nullptr;
383 } 383 }
384 384
385 #if SK_SUPPORT_GPU 385 #if SK_SUPPORT_GPU
386 #include "GrFragmentProcessor.h" 386 #include "GrFragmentProcessor.h"
387 #include "GrInvariantOutput.h" 387 #include "GrInvariantOutput.h"
388 #include "gl/GrGLFragmentProcessor.h" 388 #include "gl/GrGLFragmentProcessor.h"
389 #include "gl/builders/GrGLProgramBuilder.h" 389 #include "glsl/GrGLSLFragmentShaderBuilder.h"
390 #include "glsl/GrGLSLProgramBuilder.h"
390 #include "glsl/GrGLSLProgramDataManager.h" 391 #include "glsl/GrGLSLProgramDataManager.h"
391 392
392 class ColorMatrixEffect : public GrFragmentProcessor { 393 class ColorMatrixEffect : public GrFragmentProcessor {
393 public: 394 public:
394 static const GrFragmentProcessor* Create(const SkColorMatrix& matrix) { 395 static const GrFragmentProcessor* Create(const SkColorMatrix& matrix) {
395 return new ColorMatrixEffect(matrix); 396 return new ColorMatrixEffect(matrix);
396 } 397 }
397 398
398 const char* name() const override { return "Color Matrix"; } 399 const char* name() const override { return "Color Matrix"; }
399 400
400 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; 401 GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
401 402
402 class GLProcessor : public GrGLFragmentProcessor { 403 class GLProcessor : public GrGLFragmentProcessor {
403 public: 404 public:
404 // this class always generates the same code. 405 // this class always generates the same code.
405 static void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKey Builder* b) {} 406 static void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKey Builder* b) {}
406 407
407 GLProcessor(const GrProcessor&) {} 408 GLProcessor(const GrProcessor&) {}
408 409
409 virtual void emitCode(EmitArgs& args) override { 410 virtual void emitCode(EmitArgs& args) override {
410 fMatrixHandle = args.fBuilder->addUniform(GrGLProgramBuilder::kFragm ent_Visibility, 411 fMatrixHandle = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFra gment_Visibility,
411 kMat44f_GrSLType, kDefault_GrSLP recision, 412 kMat44f_GrSLType, kDefault_GrSLP recision,
412 "ColorMatrix"); 413 "ColorMatrix");
413 fVectorHandle = args.fBuilder->addUniform(GrGLProgramBuilder::kFragm ent_Visibility, 414 fVectorHandle = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFra gment_Visibility,
414 kVec4f_GrSLType, kDefault_GrSLPr ecision, 415 kVec4f_GrSLType, kDefault_GrSLPr ecision,
415 "ColorMatrixVector"); 416 "ColorMatrixVector");
416 417
417 if (nullptr == args.fInputColor) { 418 if (nullptr == args.fInputColor) {
418 // could optimize this case, but we aren't for now. 419 // could optimize this case, but we aren't for now.
419 args.fInputColor = "vec4(1)"; 420 args.fInputColor = "vec4(1)";
420 } 421 }
421 GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBui lder(); 422 GrGLSLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderB uilder();
422 // The max() is to guard against 0 / 0 during unpremul when the inco ming color is 423 // The max() is to guard against 0 / 0 during unpremul when the inco ming color is
423 // transparent black. 424 // transparent black.
424 fsBuilder->codeAppendf("\tfloat nonZeroAlpha = max(%s.a, 0.00001);\n ", 425 fsBuilder->codeAppendf("\tfloat nonZeroAlpha = max(%s.a, 0.00001);\n ",
425 args.fInputColor); 426 args.fInputColor);
426 fsBuilder->codeAppendf("\t%s = %s * vec4(%s.rgb / nonZeroAlpha, nonZ eroAlpha) + %s;\n", 427 fsBuilder->codeAppendf("\t%s = %s * vec4(%s.rgb / nonZeroAlpha, nonZ eroAlpha) + %s;\n",
427 args.fOutputColor, 428 args.fOutputColor,
428 args.fBuilder->getUniformCStr(fMatrixHandle), 429 args.fBuilder->getUniformCStr(fMatrixHandle),
429 args.fInputColor, 430 args.fInputColor,
430 args.fBuilder->getUniformCStr(fVectorHandle)) ; 431 args.fBuilder->getUniformCStr(fVectorHandle)) ;
431 fsBuilder->codeAppendf("\t%s = clamp(%s, 0.0, 1.0);\n", 432 fsBuilder->codeAppendf("\t%s = clamp(%s, 0.0, 1.0);\n",
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550 str->append("matrix: ("); 551 str->append("matrix: (");
551 for (int i = 0; i < 20; ++i) { 552 for (int i = 0; i < 20; ++i) {
552 str->appendScalar(fMatrix.fMat[i]); 553 str->appendScalar(fMatrix.fMat[i]);
553 if (i < 19) { 554 if (i < 19) {
554 str->append(", "); 555 str->append(", ");
555 } 556 }
556 } 557 }
557 str->append(")"); 558 str->append(")");
558 } 559 }
559 #endif 560 #endif
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