C++ (Cpp) GrPendingFragmentStage::isPerspectiveCoordTransform Examples

Example #1

File: GrGLNvprProgramBuilder.cpp Project: OS-Corp/skia

void GrGLNvprProgramBuilder::emitTransforms(const GrPendingFragmentStage& processorStage,
                                            GrGLProcessor::TransformedCoordsArray* outCoords,
                                            GrGLInstalledFragProc* ifp) {
    const GrFragmentProcessor* effect = processorStage.getProcessor();
    int numTransforms = effect->numTransforms();

    ifp->fTransforms.push_back_n(numTransforms);

    for (int t = 0; t < numTransforms; t++) {
        GrSLType varyingType =
                processorStage.isPerspectiveCoordTransform(t) ?
                        kVec3f_GrSLType :
                        kVec2f_GrSLType;

        const char* varyingName = "MatrixCoord";
        SkString suffixedVaryingName;
        if (0 != t) {
            suffixedVaryingName.append(varyingName);
            suffixedVaryingName.appendf("_%i", t);
            varyingName = suffixedVaryingName.c_str();
        }
        GrGLVertToFrag v(varyingType);
        ifp->fTransforms[t].fHandle = this->addSeparableVarying(varyingName, &v);
        ifp->fTransforms[t].fType = varyingType;

        SkNEW_APPEND_TO_TARRAY(outCoords, GrGLProcessor::TransformedCoords,
                               (SkString(v.fsIn()), varyingType));
    }
}