FUTURE DIRECTIONS 

Some upcoming features for VAPP include:

• Conditional presentation.  This would allow the experimenter to direct VAPP to execute different portions of the script depending on subject responses.
• High speed buffering of common images.  VAPP pre-renders all its images in video memory prior to presenting them, but once presented, they are discarded.  If the same image is needed again later, it is re-rendered from scratch.  This enhancement would maintain an inventory of recently used images that would recycle them automatically if the same image were needed again.  This would allow full frame rate alternating checkerboards.
• Adjustable refresh rates.  VAPP will be set up to take control of the refresh rate of your monitor, allowing faster presentation, or simply allowing you to ensure that the same frame rate is used on different computers.
• VVSP stim file syntax support.  The syntax of the VAPP stim files has diverged somewhat from the original VVSP specification.  This will be restored to make it possible to take existing VVSP experiments and reproduce them exactly in VAPP.
• TrueType font support.  The current font support in VAPP is limited to fixed height fonts and Windows 2.x style outline fonts, which do not scale well.  Support for TrueType fonts is needed.