Bug#451703: white screen of death under compiz

[David <david.maillists@gmail.com>]

Here the outputs:

$ glxinfo|grep direct
direct rendering: No (If you want to find out why, try setting LIBGL_DEBUG=verbose)
OpenGL renderer string: Mesa GLX Indirect

$ glxinfo|grep vendor
server glx vendor string: SGI
client glx vendor string: SGI
OpenGL vendor string: Mesa project: www.mesa3d.org

$ glxinfo|grep GLX_EXT_texture_from_pixmap
    GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_OML_swap_method,
    GLX_SGIX_visual_select_group, GLX_EXT_texture_from_pixmap
    GLX_SGIX_fbconfig, GLX_EXT_texture_from_pixmap

$ LIBGL_ALWAYS_INDIRECT=1 glxinfo|grep GLX_EXT_texture_from_pixmap
    GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_OML_swap_method,
    GLX_SGIX_visual_select_group, GLX_EXT_texture_from_pixmap
    GLX_SGIX_fbconfig, GLX_EXT_texture_from_pixmap