singleton Material(White)
{
   mapTo = "unmapped_mat";
   diffuseMap[0] = "./white.png";
};

singleton Material(Grid_512_Gray)
{
   mapTo = "unmapped_mat";
   diffuseMap[0] = "./512_grey.png";
};

singleton Material(Orange512_lines)
{
   mapTo = "unmapped_mat";
   diffuseMap[0] = "./512_orange_lines.png";
};