/usr/share/psychtoolbox-3/PsychGLImageProcessing/kPsychNeedFastOffscreenWindows.m is in psychtoolbox-3-common 3.0.11.20131230.dfsg1-1build1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | function rval = kPsychNeedFastOffscreenWindows
% rval = kPsychNeedFastOffscreenWindows
% Return a flag that you can pass to the 'imagingmode' parameter of
% Screen('OpenWindow') in order to request use of fast support for Offscreen windows.
%
% If requested, Psychtoolbox will use an especially fast buffering scheme
% to implement Offscreen windows. This can significantly speed up drawing
% if you make heavy use of Offscreen windows.
%
% 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. If you need to use older hardware, Offscreen windows will
% still work, but at a significantly lower speed.
rval = 1024;
return
|