'gl' forces the use of the new GL based sinks, and will raise an exception if the
appropriate GL support does not exist.
'auto' currently equates to 'nongl'; however, in release 3.2, this will change to
use GL if possible and if not, fallback to the non-GL versions.
'gl' forces the use of the new GL based sinks, and will raise an exception if the
appropriate GL support does not exist.
'auto' currently equates to 'nongl'; however, in release 3.2, this will change to
use GL if possible and if not, fallback to the non-GL versions.