Re: Some considerations

I see your point now. Still, it might be better to keep them in AGP memory 
anyway. You have to keep copying them over the AGP bus, but even at extremely 
high drawing rates you can't be taking more than 100MB/sec. However, if you 
want to be able to use the same glyph bitmaps for apps rendering to their 
window buffer via software, you don't want to keep downloading them from video 
memory. 
 
> > > A key performance question will be where does the font bitmap cache 
> live, 
> > AGP  
> > > or VRAM?  
> > Does it really matter? AGP texturing is reasonably fast, and I highly doubt 
>  
> > you're going to significantly eat into AGP's 1-2GB/sec of memory bandwidth 
> > just  
> > composing glyphs.  
> >  
>  
> It's the other way around. The performance is copying the composed glyphs 
> over 
> and over again into the app windows. 
>  
> ===== 
> Jon Smirl 
> jonsmirl-/[email protected] 
>  
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