On 8/20/06, Jon Smirl <[EMAIL PROTECTED]> wrote:
What bus interface is the card going to have? PCI is hopelessly slow for graphics.
No, it's not. Yes, it's bloody slow, but we've already done the calculations, and it's just barely fast enough. But only if you use DMA. (DMA makes the transfer a few % faster, but mostly, it just frees up the rest of the system to do useful work.) I remember when PCI was the rage. Anyhow, I've been writing graphics drivers for PCI cards for a LONG time, even on systems with severe limitations like Sparc, and have been able to get excellent performance. If your bus is slow, you just have to make efficient use of it.
If you do AGP you also need AGP port support. PCI-express needs the PCI-express way of mapping VRAM into the CPU/GPU address spaces.
What is the "PCI-express way"? _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
