Method _GetFallbackScalarSwizzleString

pxr/imaging/hdSt/codeGen.cpp:7030–7054

}

std::string
HdSt_CodeGen::_GetFallbackScalarSwizzleString(TfToken const &returnType,
                                              TfToken const &paramName)
{
    if (!_IsScalarType(returnType)) {
        return "";
    }

    // TODO: More efficient way of either specifying this at a higher level
    // or calculating it in codeGen
    TfToken fallbackParamName(paramName.GetString() +
        HdSt_ResourceBindingSuffixTokens->fallback.GetString());
    TF_FOR_ALL (it, _metaData->shaderData) {
        TF_FOR_ALL (dbIt, it->second.entries) {
            if (dbIt->name == fallbackParamName) {
                if (!_IsScalarType(dbIt->dataType)) {
                    return ".x";
                }
                return "";
            }
        }
    }

    return "";
}

PXR_NAMESPACE_CLOSE_SCOPE