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Side by Side Diff: src/gpu/gl/GrGLPrimitiveProcessor.cpp

Issue 1441683008: Move GrGLPrimitive/GeometryProc to GLSL (Closed) Base URL: https://skia.googlesource.com/skia.git@xferProcs
Patch Set: nits Created 5 years, 1 month ago
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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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