cedricpinson/osgjs — pull request #22 by zqsd (2013-02-18 22:11:00+00:00)
Title: HDR and Cubemap examples improvements.

Environment mapping (cube and sphere) now uses a correct reflection.
HDR file format encoded into png images using alpha as common exponant.
HDR tone maping switched from linear to gamma.
Sphere map is simulated using a cube, and UV transformations inside a fragment shader.