Date: Mon, 9 Mar 1998 08:28:04 +0100 (MET) From: Søren Schmidt <sos@FreeBSD.ORG> To: doconnor@gsoft.com.au (Daniel O'Connor) Cc: hackers@FreeBSD.ORG Subject: Re: Framebuffer access via libvgl Message-ID: <199803090728.IAA01897@sos.freebsd.dk> In-Reply-To: <199803090650.RAA15815@cain.gsoft.com.au> from Daniel O'Connor at "Mar 9, 98 05:20:04 pm"
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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...
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Søren Schmidt (sos@FreeBSD.org) FreeBSD Core Team
Even more code to hack -- will it ever end
..
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