Method remapEnumeration

source/MaterialXGenMsl/MslSyntax.cpp:351–390

}

bool MslSyntax::remapEnumeration(const string& value, TypeDesc type, const string& enumNames, std::pair<TypeDesc, ValuePtr>& result) const
{
    // Early out if not an enum input.
    if (enumNames.empty())
    {
        return false;
    }

    // Don't convert already supported types
    if (type != Type::STRING)
    {
        return false;
    }

    // Early out if no valid value provided
    if (value.empty())
    {
        return false;
    }

    // For MSL we always convert to integer,
    // with the integer value being an index into the enumeration.
    result.first = Type::INTEGER;
    result.second = nullptr;

    StringVec valueElemEnumsVec = splitString(enumNames, ",");
    for (size_t i = 0; i < valueElemEnumsVec.size(); i++)
    {
        valueElemEnumsVec[i] = trimSpaces(valueElemEnumsVec[i]);
    }
    auto pos = std::find(valueElemEnumsVec.begin(), valueElemEnumsVec.end(), value);
    if (pos == valueElemEnumsVec.end())
    {
        throw ExceptionShaderGenError("Given value '" + value + "' is not a valid enum value for input.");
    }
    const int index = static_cast<int>(std::distance(valueElemEnumsVec.begin(), pos));
    result.second = Value::createValue<int>(index);

    return true;
}

MATERIALX_NAMESPACE_END