template<class T> void setUniformArrayValue(QOpenGLShaderProgram *program,
                                       const QString& arrayName,
                                       const QString& varName,
                                       int index,
                                       const T& value)
{
    std::string name = QString("%1[%2].%3")
            .arg(arrayName)
            .arg(index)
            .arg(varName)
            .toStdString();
    program->setUniformValue(name.c_str(), value);
}