Date: Sun, 08 Mar 1998 23:53:34 -0800 From: Amancio Hasty <hasty@rah.star-gate.com> To: sos@FreeBSD.ORG Cc: doconnor@gsoft.com.au (Daniel O'Connor), hackers@FreeBSD.ORG Subject: Re: Framebuffer access via libvgl Message-ID: <199803090753.XAA27972@rah.star-gate.com> In-Reply-To: Your message of "Mon, 09 Mar 1998 08:28:04 %2B0100." <199803090728.IAA01897@sos.freebsd.dk>
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Cool, how does this work for Matrox and S3 cards?
Tnks,
Amancio
> In reply to Daniel O'Connor who wrote:
> > Hi,
> > I was wondering if it was possible to get a pointer to the framebuffer on the
> > video card using libvgl, a la svgalib?
> > It would be handy for porting svgalib apps :)
>
> Sure is is, look at the example in /usr/share/examples/libvgl how to
> init etc, then you use the structure VGLDisplay which is of type:
>
> typedef struct {
> byte Type; /* type of display buffer ie 8bit planemode etc */
> int Xsize, Ysize; /* size of screen memory */
> byte *Bitmap; /* pointer to start of screen memory */
> } VGLBitmap;
>
> You want the Bitmap pointer...
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> Søren Schmidt (sos@FreeBSD.org) FreeBSD Core Team
> Even more code to hack -- will it ever end
> ..
>
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