On Tue, Sep 24, 2002 at 05:06:13 +0100, Keith Whitwell wrote:
> Alan Hourihane wrote:
> >Keith,
> >
> >This should do it.
> >
> > {
> > PixmapPtr pspix;
> > pspix = (*pScreen->GetScreenPixmap) (pScreen);
> > (*pScreen->ModifyPixmapHeader)(pspix, 0, 0, 0, 0, 0,
> > info->FB + XXXXXXXOFFSETXXXXX );
> > }
> >
> >Alan.
>
> Alan, do you have a feel for how this will affect XAA and offscreen
> pixmaps, pixmap caches, etc?
>
> My guess is that it will break them, but I live in hope...
It might not break them, the pixmap cache gets cracked down via
the PutImage (or PutImage/CopyArea) path which gets passed
through to our ImageWrite/ScreenToScreen accelerator code.....
Um, might have to remove that GXCOPY_ONLY flag on ImageWrites though.
But, the alternative path is...
If we code up 'WriteBitmap' and 'WritePixmap' which deals with
pixmap cache loading and hook these into our _accel.c functions,
then we should be able to remove the pixmap cache flag called
LINEAR_FRAMEBUFFER. This is a more direct path and might be
slightly faster. That should do the trick if the above doesn't.
Alan.
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