Messages in this thread | | | Subject | Re: Merging DRM and fbdev | From | Alan Cox <> | Date | Sun, 03 Oct 2004 23:19:24 +0100 |
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On Sul, 2004-10-03 at 16:50, Vladimir Dergachev wrote: > In particular, I can contribute the code that does Framebuffer->System Ram > transfers over PCI/AGP. It is currently GPL licensed, but there is no > problem if BSD folks want it too.
This will do *wonders* to X render performance if used properly on those cards we can't do render in hardware.
> This is also potentially useful for any Mesa functions that want to > transfer data back from video RAM - using plain reads for this is really slow.
Agreed - and Mesa tends to skip even tricks like SSE2 that can quadruple read performance. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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