GLX_MESA_set_3dfx_mode
https://www.khronos.org/registry/egl/specs/eglspec.1.5.pdf
GLX_MESA_set_3dfx_mode

	GLX_3DFX_WINDOW_MODE_MESA 0x1
	GLX_3DFX_FULLSCREEN_MODE_MESA 0x2
	GLboolean glXSet3DfxModeMESA (GLint mode)