From: Berlin Brown (bigbinc@hotmail.com)
Date: Mon 24 Feb 2003 - 02:34:49 IST
>From: Jay Link <jlink@ilbbs.com>
>To: Berlin Brown <bigbinc@hotmail.com>
>CC: <linux-svgalib@svgalib.org>
>Subject: Re: some flickering with svgalib and also opengl
>Date: Sun, 23 Feb 2003 18:25:24 -0600 (CST)
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> > First when I do movement with svgalib, I get some flickering only at the
>top
> > of the screen.
>
>Sometimes this can happen because of your video card and/or the driver --
>not because of faulty code.
>
>For example, I had an app once that would behave erratically, and I was
>going crazy trying to figure it out, but it ended up being my hardware.
>
>Can you try it on a different machine?
>
> > I am using vgagl and porting it to standard vga and get the
> > same result. And I already used similar code in vgagl. And this is
> > basically a line that crawls down the screen. The only problem is that
> > there is some weird flickering when it travels down the screen. Any
>ideas?
> > I think this a graphics programming problem maybe not a svgalib problem.
>
>See above.
>
> > Also, I was thinking, since svgalib has some x-windows code in it. is
>it
> > possible to add the opengl support for hardware acceleration. I know
>this
> > is an extra-extra feature. I figure if X-windows does it, svgalib
>should be
> > able.
>
>There is no real SVGAlib staff -- most requests such as this must be
>fulfilled by the "requester".
You are kidding me right? Actually I am working on a small version of
svgalib with uClibc, I hope to get the library to 20-30k.
And my flickering problem was because of page flipping. I added some more
code to perform page flipping using vga, like the code in vgagl.
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