[maemo-developers] [maemo-developers] SDL vertical blank (vbl) sync.

From: Frantisek Dufka dufkaf at seznam.cz
Date: Mon May 29 17:50:50 EEST 2006
Juha Yrjölä wrote:

> Unfortunately we don't provide user-space with the vsync information (or 
> "Tearing Effect" signal, as it's called in LCD land).
> If there's large enough need for this, we might consider implementing 
> the support.  The tearing effects should be minimal on the 770, however, 
> because of the high (around 55 Hz) refresh rate of the display.


well the effect is visible even when playing the Ice Age Trailer (I 
suppose it is not already in the movie data). I think such feature is 
quite useful for games and movie playback. BTW how big is the 
framebuffer memory? Is there space for 2 frames so double-buffering is 
possible? Also is there some datasheet for the Epson hwa742 chip? Can 
you make it public? I tried to google for it (and for lph8923 too) but 
found nothing useful. Thanks.


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