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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 "GrGLNvprProgramBuilder.h" | |
| 9 #include "../GrGpuGL.h" | |
| 10 | |
| 11 #define GL_CALL(X) GR_GL_CALL(this->gpu()->glInterface(), X) | |
| 12 #define GL_CALL_RET(R, X) GR_GL_CALL_RET(this->gpu()->glInterface(), R, X) | |
| 13 | |
| 14 GrGLNvprProgramBuilder::GrGLNvprProgramBuilder(GrGpuGL* gpu, | |
| 15 const GrOptDrawState& optState, | |
| 16 const GrGLProgramDesc& desc) | |
| 17 : INHERITED(gpu, optState, desc) | |
| 18 , fSeparableVaryingInfos(kVarsPerBlock) { | |
| 19 } | |
| 20 | |
| 21 void GrGLNvprProgramBuilder::emitTransforms(const GrProcessorStage& processorSta
ge, | |
| 22 GrGLProcessor::TransformedCoordsArra
y* outCoords, | |
| 23 GrGLInstalledProcessors* installedPr
ocessors) { | |
| 24 const GrProcessor* effect = processorStage.getProcessor(); | |
| 25 int numTransforms = effect->numTransforms(); | |
| 26 | |
| 27 SkTArray<GrGLInstalledProcessors::Transform, true>& transforms = | |
| 28 installedProcessors->addTransforms(); | |
| 29 transforms.push_back_n(numTransforms); | |
| 30 | |
| 31 for (int t = 0; t < numTransforms; t++) { | |
| 32 GrSLType varyingType = | |
| 33 processorStage.isPerspectiveCoordTransform(t, false) ? | |
| 34 kVec3f_GrSLType : | |
| 35 kVec2f_GrSLType; | |
| 36 | |
| 37 const char* varyingName = "MatrixCoord"; | |
| 38 SkString suffixedVaryingName; | |
| 39 if (0 != t) { | |
| 40 suffixedVaryingName.append(varyingName); | |
| 41 suffixedVaryingName.appendf("_%i", t); | |
| 42 varyingName = suffixedVaryingName.c_str(); | |
| 43 } | |
| 44 const char* vsVaryingName; | |
| 45 const char* fsVaryingName; | |
| 46 transforms[t].fHandle = this->addSeparableVarying(varyingType, varyingNa
me, | |
| 47 &vsVaryingName, &fsVar
yingName); | |
| 48 transforms[t].fType = varyingType; | |
| 49 | |
| 50 SkNEW_APPEND_TO_TARRAY(outCoords, GrGLProcessor::TransformedCoords, | |
| 51 (SkString(fsVaryingName), varyingType)); | |
| 52 } | |
| 53 } | |
| 54 | |
| 55 GrGLInstalledProcessors::ShaderVarHandle | |
| 56 GrGLNvprProgramBuilder::addSeparableVarying(GrSLType type, | |
| 57 const char* name, | |
| 58 const char** vsOutName, | |
| 59 const char** fsInName) { | |
| 60 addVarying(type, name, vsOutName, fsInName); | |
| 61 SeparableVaryingInfo& varying = fSeparableVaryingInfos.push_back(); | |
| 62 varying.fVariable = fFS.fInputs.back(); | |
| 63 return GrGLInstalledProcessors::ShaderVarHandle(fSeparableVaryingInfos.count
() - 1); | |
| 64 } | |
| 65 | |
| 66 void GrGLNvprProgramBuilder::resolveSeparableVaryings(GrGLuint programId) { | |
| 67 int count = fSeparableVaryingInfos.count(); | |
| 68 for (int i = 0; i < count; ++i) { | |
| 69 GrGLint location; | |
| 70 GL_CALL_RET(location, | |
| 71 GetProgramResourceLocation(programId, | |
| 72 GR_GL_FRAGMENT_INPUT, | |
| 73 fSeparableVaryingInfos[i].fVariab
le.c_str())); | |
| 74 fSeparableVaryingInfos[i].fLocation = location; | |
| 75 } | |
| 76 } | |
| 77 | |
| 78 GrGLProgram* GrGLNvprProgramBuilder::createProgram(GrGLuint programID) { | |
| 79 // this is just for nvpr es, which has separable varyings that are plugged i
n after | |
| 80 // building | |
| 81 this->resolveSeparableVaryings(programID); | |
| 82 return SkNEW_ARGS(GrGLNvprProgram, (fGpu, fDesc, fUniformHandles, programID,
fUniforms, | |
| 83 fColorEffects, fCoverageEffects, fSepara
bleVaryingInfos)); | |
| 84 } | |
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