[geeks] Blender & Jashaka on IRIX

Frank Van Damme frank.vandamme at student.kuleuven.ac.be
Thu Jan 16 16:11:44 CST 2003


On Thursday 16 January 2003 22:38, Joshua D Boyd wrote:
> Are you sure it is really using a video card hardware texturing for the
> entire window?  At a decent resolution, you would run out of texture
> memory very quickly on a 16meg card, and it would limit portability.
> On the other hand, if you really did do it that way, I think that
> copying part of the screen to a texture is supposed to be faster than
> copying back to ram.

I am not sure. DirectFB was  originally designed for embedded devices. You 
can compile an app statically with the directfb libs and even with the 
device drivers, who all run in userspace! Ain't that a nifty technology :)

In any case: they don't redraw windows usually. But you can check it all out 
on http://www.directfb.org/ off course. Especially the screenshots :-) 

> Also, off screen buffers that are still stored in the video memory but
> aren't actual textures would be a possibility.  This would make for
> faster blitting usually.

Hm, this is somewhat beyond me...

Frank


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