1 /* 2 * Copyright 2020 Google LLC 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef GrMatrixEffect_DEFINED 9 #define GrMatrixEffect_DEFINED 10 11 #include "include/core/SkM44.h" 12 #include "include/core/SkTypes.h" 13 14 #include "src/gpu/GrFragmentProcessor.h" 15 16 class GrMatrixEffect : public GrFragmentProcessor { 17 public: 18 static std::unique_ptr<GrFragmentProcessor> Make(const SkMatrix& matrix, 19 std::unique_ptr<GrFragmentProcessor> child); 20 21 std::unique_ptr<GrFragmentProcessor> clone() const override; name()22 const char* name() const override { return "MatrixEffect"; } matrix()23 const SkMatrix& matrix() const { return fMatrix; } 24 25 private: 26 GrMatrixEffect(const GrMatrixEffect& src); 27 GrMatrixEffect(SkMatrix matrix,std::unique_ptr<GrFragmentProcessor> child)28 GrMatrixEffect(SkMatrix matrix, std::unique_ptr<GrFragmentProcessor> child) 29 : INHERITED(kGrMatrixEffect_ClassID, ProcessorOptimizationFlags(child.get())) 30 , fMatrix(matrix) { 31 SkASSERT(child); 32 this->registerChild(std::move(child), 33 SkSL::SampleUsage::UniformMatrix("matrix", matrix.hasPerspective())); 34 } 35 36 std::unique_ptr<GrGLSLFragmentProcessor> onMakeProgramImpl() const override; 37 void onGetGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder*) const override; 38 bool onIsEqual(const GrFragmentProcessor&) const override; constantOutputForConstantInput(const SkPMColor4f & inputColor)39 SkPMColor4f constantOutputForConstantInput(const SkPMColor4f& inputColor) const override { 40 return ConstantOutputForConstantInput(this->childProcessor(0), inputColor); 41 } 42 43 SkMatrix fMatrix; 44 45 GR_DECLARE_FRAGMENT_PROCESSOR_TEST 46 using INHERITED = GrFragmentProcessor; 47 }; 48 #endif 49