GLX_MESA_set_3dfx_mode
http://www.opengl.org/registry/specs/MESA/set_3dfx_mode.txt
GLX_MESA_set_3dfx_mode
	GLX_3DFX_WINDOW_MODE_MESA 0x1
	GLX_3DFX_FULLSCREEN_MODE_MESA 0x2
	GLboolean glXSet3DfxModeMESA (GLint mode)
