[cairo] Re: Using ADD operator to prevent seams

[Jon Smirl]

On Mon, 21 Mar 2005 21:02:25 -0500, MenTaLguY <mental at rydia.net> wrote:
> On Mon, 2005-03-21 at 14:18, Bill Spitzak wrote:
> > A special "aliased" backend can also be provided. This would be totally
> > unrelated to the normal device backend, it would not be hardware
> > accelerated, and would draw into an image buffer, and then copy that to
> > the device. If you can set the scale from the image to the device this
> > will also produce supersampled antialiasing.
> 
> Actually, no ... there are some subtle differences from what I was
> proposing; I think yours may be slightly better.

Would it work to draw to an offscreen 4x hardware accelerated buffer
and then sample down when displaying? I believe the radeon can support
up to 8K x 8K offscreen buffers if you have the VRAM.

Of course mesa needs to get gl FBO's working before this can be implemented.

-- 
Jon Smirl
jonsmirl at gmail.com