Calculating the Infinite Focal Plane ("skydome")

You're very welcome! I was chasing the information mostly out of an academic interest myself, but it can probably be useful in circumstances where a player will be focusing at distance for the majority of gameplay - such as a space shooter - by populating the foreground 0 - 300m range with small particles, debris, and other elements to enhance the sense of depth.

Also, in regards to optimisation, an environment sphere could represent anything outside the ~300m depth mark (at the Rift's current devkit resolution), with the following caveats:

• Any space in which the player can't move around a lot would probably benefit from significantly distant geometry, relative to the degree of player movement possible. Parallax at distances beyond ~300m is an important depth cue so environment spheres wouldn't work so well if the player has a moderate degree of positional freedom.


• Any textured environment dome would need to very closely match fidelity, contrast, perspective, etc. with the real-time environment, again to help the brain process depth from 2D information