I think PS also uses a trick to excite the impression of an instant update: It updates the screen nearly instantly at low resolution, and then continues in the background to refine the screen display up to full resolution (please correct me, if I'm wrong).
Photoshop apparently uses a pyramid-style tiled internal storage scheme rather than traditional linear raster storage. That means that for each supported magnification level a single pixel may represent a complete tile, or a grouping of tiles. Only the displayed pixel needs to be converted for display. Photoshop is multithreaded, so while the user is idle, it may be pre-computing some information.
Bob ====================================== Bob Friesenhahn [EMAIL PROTECTED] http://www.simplesystems.org/users/bfriesen
-------------------------------------------------------
SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/
_______________________________________________
Lcms-user mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/lcms-user
