generateCubeUVSize method

dynamic generateCubeUVSize(dynamic parameters)

Implementation

generateCubeUVSize(parameters) {
  var imageHeight = parameters.cubeUVHeight;

  if (imageHeight == null) return null;

  int maxMip = Math.log2(imageHeight).toInt() - 2;

  var texelHeight = 1.0 / imageHeight;

  var texelWidth = 1.0 / (3 * Math.max(Math.pow(2, maxMip), 7 * 16));

  return {"texelWidth": texelWidth, "texelHeight": texelHeight, "maxMip": maxMip};
}