[Spherical Environment Mapping (Direct3D 9)](https://msdn.microsoft.com/en-us/library/windows/desktop/bb147401.aspx) [Sphere mapping](https://en.wikipedia.org/wiki/Sphere_mapping) Blinn & Newell, "Texture and Reflection in Computer Generated Images", _Communications of the ACM_. 1976. [link](https://www.microsoft.com/en-us/research/wp-content/uploads/1976/10/p542-blinn.pdf) [Converting to/from cubemaps](http://paulbourke.net/miscellaneous/cubemaps/index.html)
Spherical Environment Mapping (Direct3D 9)
Sphere mapping
Blinn & Newell, "Texture and Reflection in Computer Generated Images", Communications of the ACM. 1976.
link
Converting to/from cubemaps