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| 1 /* | |
| 2 * Copyright 2013 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 "GrGLPathProcessor.h" | |
| 9 | |
| 10 #include "GrPathProcessor.h" | |
| 11 #include "GrGLGpu.h" | |
| 12 #include "GrGLPathRendering.h" | |
| 13 | |
| 14 GrGLPathProcessor::GrGLPathProcessor() | |
| 15 : fColor(GrColor_ILLEGAL) {} | |
| 16 | |
| 17 void GrGLPathProcessor::emitCode(EmitArgs& args) { | |
| 18 GrGLGPBuilder* pb = args.fPB; | |
| 19 GrGLFragmentBuilder* fs = args.fPB->getFragmentShaderBuilder(); | |
| 20 const GrPathProcessor& pathProc = args.fGP.cast<GrPathProcessor>(); | |
| 21 | |
| 22 // emit transforms | |
| 23 this->emitTransforms(args.fPB, args.fTransformsIn, args.fTransformsOut); | |
| 24 | |
| 25 // Setup uniform color | |
| 26 if (pathProc.opts().readsColor()) { | |
| 27 const char* stagedLocalVarName; | |
| 28 fColorUniform = pb->addUniform(GrGLProgramBuilder::kFragment_Visibility, | |
| 29 kVec4f_GrSLType, | |
| 30 kDefault_GrSLPrecision, | |
| 31 "Color", | |
| 32 &stagedLocalVarName); | |
| 33 fs->codeAppendf("%s = %s;", args.fOutputColor, stagedLocalVarName); | |
| 34 } | |
| 35 | |
| 36 // setup constant solid coverage | |
| 37 if (pathProc.opts().readsCoverage()) { | |
| 38 fs->codeAppendf("%s = vec4(1);", args.fOutputCoverage); | |
| 39 } | |
| 40 } | |
| 41 | |
| 42 void GrGLPathProcessor::GenKey(const GrPathProcessor& pathProc, | |
| 43 const GrGLSLCaps&, | |
| 44 GrProcessorKeyBuilder* b) { | |
| 45 b->add32(SkToInt(pathProc.opts().readsColor()) | | |
| 46 SkToInt(pathProc.opts().readsCoverage()) << 16); | |
| 47 } | |
| 48 | |
| 49 void GrGLPathProcessor::setData(const GrGLProgramDataManager& pdman, | |
| 50 const GrPrimitiveProcessor& primProc) { | |
| 51 const GrPathProcessor& pathProc = primProc.cast<GrPathProcessor>(); | |
| 52 if (pathProc.opts().readsColor() && pathProc.color() != fColor) { | |
| 53 GrGLfloat c[4]; | |
| 54 GrColorToRGBAFloat(pathProc.color(), c); | |
| 55 pdman.set4fv(fColorUniform, 1, c); | |
| 56 fColor = pathProc.color(); | |
| 57 } | |
| 58 } | |
| 59 | |
| 60 void GrGLPathProcessor::emitTransforms(GrGLGPBuilder* pb, const TransformsIn& ti
n, | |
| 61 TransformsOut* tout) { | |
| 62 tout->push_back_n(tin.count()); | |
| 63 fInstalledTransforms.push_back_n(tin.count()); | |
| 64 for (int i = 0; i < tin.count(); i++) { | |
| 65 const ProcCoords& coordTransforms = tin[i]; | |
| 66 fInstalledTransforms[i].push_back_n(coordTransforms.count()); | |
| 67 for (int t = 0; t < coordTransforms.count(); t++) { | |
| 68 GrSLType varyingType = | |
| 69 coordTransforms[t]->getMatrix().hasPerspective() ? kVec3f_Gr
SLType : | |
| 70 kVec2f_Gr
SLType; | |
| 71 | |
| 72 SkString strVaryingName("MatrixCoord"); | |
| 73 strVaryingName.appendf("_%i_%i", i, t); | |
| 74 GrGLVertToFrag v(varyingType); | |
| 75 fInstalledTransforms[i][t].fHandle = | |
| 76 pb->addSeparableVarying(strVaryingName.c_str(), &v).toIndex(
); | |
| 77 fInstalledTransforms[i][t].fType = varyingType; | |
| 78 | |
| 79 SkNEW_APPEND_TO_TARRAY(&(*tout)[i], GrGLProcessor::TransformedCoords
, | |
| 80 (SkString(v.fsIn()), varyingType)); | |
| 81 } | |
| 82 } | |
| 83 } | |
| 84 | |
| 85 void GrGLPathProcessor::setTransformData( | |
| 86 const GrPrimitiveProcessor& primProc, | |
| 87 const GrGLProgramDataManager& pdman, | |
| 88 int index, | |
| 89 const SkTArray<const GrCoordTransform*, true>& coordTransforms) { | |
| 90 const GrPathProcessor& pathProc = primProc.cast<GrPathProcessor>(); | |
| 91 SkSTArray<2, Transform, true>& transforms = fInstalledTransforms[index]; | |
| 92 int numTransforms = transforms.count(); | |
| 93 for (int t = 0; t < numTransforms; ++t) { | |
| 94 SkASSERT(transforms[t].fHandle.isValid()); | |
| 95 const SkMatrix& transform = GetTransformMatrix(pathProc.localMatrix(), | |
| 96 *coordTransforms[t]); | |
| 97 if (transforms[t].fCurrentValue.cheapEqualTo(transform)) { | |
| 98 continue; | |
| 99 } | |
| 100 transforms[t].fCurrentValue = transform; | |
| 101 | |
| 102 SkASSERT(transforms[t].fType == kVec2f_GrSLType || | |
| 103 transforms[t].fType == kVec3f_GrSLType); | |
| 104 unsigned components = transforms[t].fType == kVec2f_GrSLType ? 2 : 3; | |
| 105 pdman.setPathFragmentInputTransform(transforms[t].fHandle, components, t
ransform); | |
| 106 } | |
| 107 } | |
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Chromium Code Reviews
Issue 1333423003:
move GrGLPathProcessor back into GrPathProcessor (Closed)
Base URL: https://skia.googlesource.com/skia.git@pathgp2