sacha@coco:~/git/mesa/progs/xdemos$ ./texture_from_pixmap
GLX_EXT_texture_from_pixmap not supported.
sacha@coco:~/git/mesa/progs/xdemos$ LIBGL_ALWAYS_INDIRECT=1 ./texture_from_pixmap
Unable to find FBconfig for texturing
sacha@coco:~/git/mesa/progs/xdemos$