| From: | Paul Hill |
| Date: | 27 Apr 00 at 09:27:09 |
| Subject: | Re: AllocBitmap |
Martin McKenzie wrote:
>
> Hello Allan,
>
> On 25-Apr-00, Allan Odgaard wrote:
> > Without having seen the sources for CGX (nor used it for that matter ;-) )
> > I'd say that a bitmap is always allocated in graphics memory.
>
> not for CGX Im afraid...
> I did a quick search through old archives of the cybergraphics ML and found
> this: (the topic was the slow speed of swapping OS menus under CGX)
>
> "With P96, these buffer bitmaps are placed in gfxcard ram if
> possible, and the swapping can then be done by the blitter. CGX also
> supports bitmaps in gfxcard ram, but AFAIK Frank chose to require
> the BMF_DISPLAYABLE flag to be set for this to happen"
>
> Frank then replied, agreeing that this flag must be set if you want to
> allocate your data in the gfx board ram.
I wonder what would happen if a patch was written to always set the
BMF_DISPLAYABLE flag?
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