| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "GrGLSLPrimitiveProcessor.h" |
| |
| #include "GrCoordTransform.h" |
| #include "glsl/GrGLSLFragmentShaderBuilder.h" |
| #include "glsl/GrGLSLUniformHandler.h" |
| #include "glsl/GrGLSLVertexShaderBuilder.h" |
| |
| SkMatrix GrGLSLPrimitiveProcessor::GetTransformMatrix(const SkMatrix& localMatrix, |
| const GrCoordTransform& coordTransform) { |
| SkMatrix combined; |
| // We only apply the localmatrix to localcoords |
| if (kLocal_GrCoordSet == coordTransform.sourceCoords()) { |
| combined.setConcat(coordTransform.getMatrix(), localMatrix); |
| } else { |
| combined = coordTransform.getMatrix(); |
| } |
| if (coordTransform.reverseY()) { |
| // combined.postScale(1,-1); |
| // combined.postTranslate(0,1); |
| combined.set(SkMatrix::kMSkewY, |
| combined[SkMatrix::kMPersp0] - combined[SkMatrix::kMSkewY]); |
| combined.set(SkMatrix::kMScaleY, |
| combined[SkMatrix::kMPersp1] - combined[SkMatrix::kMScaleY]); |
| combined.set(SkMatrix::kMTransY, |
| combined[SkMatrix::kMPersp2] - combined[SkMatrix::kMTransY]); |
| } |
| return combined; |
| } |
| |
| void GrGLSLPrimitiveProcessor::setupUniformColor(GrGLSLFragmentBuilder* fragBuilder, |
| GrGLSLUniformHandler* uniformHandler, |
| const char* outputName, |
| UniformHandle* colorUniform) { |
| SkASSERT(colorUniform); |
| const char* stagedLocalVarName; |
| *colorUniform = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility, |
| kVec4f_GrSLType, |
| kDefault_GrSLPrecision, |
| "Color", |
| &stagedLocalVarName); |
| fragBuilder->codeAppendf("%s = %s;", outputName, stagedLocalVarName); |
| } |