>Psychtoolbox>PsychGLImageProcessing

rval = kPsychNeedOutputConversion

Return a flag that you can pass to the ‘imagingmode’ parameter of
Screen(‘OpenWindow’) in order to request support for special output
conversion operations needed to driver special output devices.

If requested, Psychtoolbox will configure itself to support special
OpenGL shader plugins for all kinds of on-the-fly conversions of final
image data into the special data format needed by special output devices.

FIXME: More info…

It is part of the Psychtoolbox imaging pipeline and only works on modern
graphics hardware, e.g., ATI Radeon 9600 and later, NVidia GeforceFX 5000
and later. Check the www.psychtoolbox.org Wiki for graphics hardware
recommendations and for a description of PTB’s image processing
capabilities.