Re: Re: Question with regards to componentAlpha

On Sat, Sep 21, 2002 at 12:03:45PM +0400, Vadim Plessky wrote:
| Can you please post some screenshots?

If it's OK, I'd like to wait until I've got the multipass version
running, so that I can see how much improvement (if any) I get with
better filter kernels.  Improvement beyond that point will probably
require subpixel placement heuristics (or use of the existing hints).

Also, do you have a standard display calibration procedure (or hardware)
you use before comparing screenshots?

| Question: what kind of filtration XRENDER / text in AA uses?
| Isn't it Gaussian?

I haven't looked at the Xft code, but my understanding was that it uses
simple geometric coverage (a one-pixel-square box filter) with enough
precision to yield 256 levels in the final result.

That's oversimplified and possibly just wrong, so Keith, please correct
me as needed.

Allen