The way I’ve done animated skyboxes is with a custom shader setup. This avoids performance problems from overdraw, makes sure skybox lighting is confined to only affecting the skybox, and generally optimizes everything. Because skyboxes can cover a significant percentage of the screen. A video here, using a custom engine.…
This seems to work: ///////////////////////////// Orthogonal camera toggle /////////////////////////////
// Script by Giacomo Colivicchi (AKA R3D)
//
// The script enables orthographic mode for the default persp camera
// and in order to avoid camera roll (which will happen if you pass your point
// of focus' zenith)…