@Steempipe, thanks for sharing, nice (better) sky_cube for us fog lovers.

@CocaCola, you can use Steempipe's shader example for your ball. If just want to use your ball as a skyscene-like object and not as a hollow sphere, just use the lines in the vertexshader for your own shader or grab e.g. a shader from the shader tutorials examples and modify that ones vertexshader.