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| 1 /* | |
| 2 * Copyright 2014 Google Inc. | |
| 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 #include "GrGLPrimitiveProcessor.h" | |
| 9 | |
| 10 #include "glsl/GrGLSLProgramBuilder.h" | |
| 11 #include "glsl/GrGLSLFragmentShaderBuilder.h" | |
| 12 | |
| 13 SkMatrix GrGLPrimitiveProcessor::GetTransformMatrix(const SkMatrix& localMatrix, | |
| 14 const GrCoordTransform& coor
dTransform) { | |
| 15 SkMatrix combined; | |
| 16 // We only apply the localmatrix to localcoords | |
| 17 if (kLocal_GrCoordSet == coordTransform.sourceCoords()) { | |
| 18 combined.setConcat(coordTransform.getMatrix(), localMatrix); | |
| 19 } else { | |
| 20 combined = coordTransform.getMatrix(); | |
| 21 } | |
| 22 if (coordTransform.reverseY()) { | |
| 23 // combined.postScale(1,-1); | |
| 24 // combined.postTranslate(0,1); | |
| 25 combined.set(SkMatrix::kMSkewY, | |
| 26 combined[SkMatrix::kMPersp0] - combined[SkMatrix::kMSkewY]); | |
| 27 combined.set(SkMatrix::kMScaleY, | |
| 28 combined[SkMatrix::kMPersp1] - combined[SkMatrix::kMScaleY]); | |
| 29 combined.set(SkMatrix::kMTransY, | |
| 30 combined[SkMatrix::kMPersp2] - combined[SkMatrix::kMTransY]); | |
| 31 } | |
| 32 return combined; | |
| 33 } | |
| 34 | |
| 35 void GrGLPrimitiveProcessor::setupUniformColor(GrGLSLGPBuilder* pb, | |
| 36 const char* outputName, | |
| 37 UniformHandle* colorUniform) { | |
| 38 GrGLSLFragmentBuilder* fs = pb->getFragmentShaderBuilder(); | |
| 39 SkASSERT(colorUniform); | |
| 40 const char* stagedLocalVarName; | |
| 41 *colorUniform = pb->addUniform(GrGLSLProgramBuilder::kFragment_Visibility, | |
| 42 kVec4f_GrSLType, | |
| 43 kDefault_GrSLPrecision, | |
| 44 "Color", | |
| 45 &stagedLocalVarName); | |
| 46 fs->codeAppendf("%s = %s;", outputName, stagedLocalVarName); | |
| 47 } | |
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