Try using Yaw(180-csc.dAzimuth) and Pitch (270-csc.dZenithAngle). I use LookAt to set the direction, that’s why I was saying to negate the vector.
Is this a github fork with this update on it? not sure if it’s in 1.6
Someone already tried to implement clouds on this?
Something simple like this: https://www.researchgate.net/publication/220982572_Clouds_and_stars_efficient_real-time_procedural_sky_rendering_using_3D_hardware