Navigation nodes in 3D level design  by
"What I call 'nodes,' in the context of level design, is a place where we know what the player is seeing. Identifying and creating nodes in our 3D level design is a great tool which serves many purposes."
VR distortion correction using vertex displacement8 by
"One of the biggest challenges in VR development is high framerate at high resolution. By transforming vertices into 'lens-space' we remove the need for full-screen render textures, massively improving mobile performance."