Hi,

> I think there is something odd in the OpenGL implementation.
> try this: Have two videotracks. In the bottom one there is video. On the
> top track there is a small piece of video like in this example:
> http://www.raldee.net/cinelerra.png
> 
> Now play this. At the point where the first track has information, the
> framerate drops from 25 to 7fps with OpenGL. With the X11-XV driver,
> performance is 25fps all the way.
> Now the same applies to a simple dissolve in one track. Framerate drops
> with OpenGL driver as well whereas the X11-XV driver has a constant
> framerate of 25.

This is exactly one of those problems I described in the thread "general
cinelerra performance".

> My Card is a Gforce 7800 with the latest NVidia drivers.

My card is a GForce, too. I think it's GForce MX 4000 together with
NVidia's binary drivers.

My suggestion is that all people with openGL-troubles post the card
model and driver. I wouldn't be surprised if most of them (including
myself) are using NVidia cards. There might be something fishy with
their closed-source drivers.



Yours sincerely,
Dennis Schulmeister

-- 
Dennis Schulmeister - Schliffkopfweg 12 - 76189 Karlsruhe  -  Germany
Tel: 0721/5978883 - Fax: 0721/5705992 - [EMAIL PROTECTED]

http://www.windows3.de - http://www.denchris.de
http://www.audiominds.com - http://www.motagator.net/bands/65


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