Richard Grenville 4a4f857cc2 Misc: Fix wrong description & DEBUG_GLX_ERR
- Fix description of "opengl" VSync.

- Add DEBUG_GLX_ERR to check for OpenGL errors.

- Update man page.
2013-04-25 09:27:14 +08:00
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2012-11-09 09:33:41 +08:00