Hi,
SDL and OpenGL wrappers are working on WIN32 and has not been ported yet for Linux of MacOS.
OpenGL wrapper is quite simple, it just wraps OpenGL functions for JavaScript (including Shader Objects). eg.
http://www.youtube.com/watch?v=iXFGSAdUsyk
I don't know exactly how many percent of the OpenGL API is wrapped, but adding missing function can be done quickly.
I plane to add an OpenGL-based gui library only (any suggestion is welcome). For desktop-gui applications, you can refer to the GLUEscript (wxJavaScript) project.
Regards,
Franck.