AnalyticalGraphicsInc/cesium — pull request #183 by pjcozzi (2012-08-28 16:49:27+00:00)
Title: Added 3x3 view matrices

Branched form pull request #182. Review and merge that first.

This introduces two automatic GLSL 3x3 matrix uniforms, one for the rotation part of the view matrix, and the other for the rotation part of the inverse-view matrix. This cleans up code that would convert a 3D point to a 4D point to use the 4x4 matrices, and then extract the `vec3`.