Archived from groups: alt.comp.periphs.videocards.matrox (
More info?)
"Arthur Hagen" <art@broomstick.com> wrote in message news:cg8llb$79g$1@cauldron.broomstick.com...
> AJ <ng@newsgroups.net> wrote:
>> Is Clear Type glyph antialiasing in software? Is
>> hardware antialiasing better? Should I turn off
>> Clear Type if I have a Matrox P650?
>
> ClearType is a subpixel anti-aliasing method that really only works well if
> you have a TFT display with horisontally arranged subpixels.
It works VERY well on my CRT thanks to the ClearType tuner on the web. Text
at 1600x1200 on my 19" G90fb Viewsonic is very clear. Much more readable
than without it or with "standard smoothing".
> If you do, it
> allows for much smoother anti-aliasing. Matrox' glyph anti-aliasing is far
> better for CRT displays, both because it allows you to adjust the amount of
> aliasing, and because it uses the graphics card anti-aliasing routines,
> meaning better results with less CPU use.
That would be nice on my current CPU, I don't think it'll be a problem on
my new one though.
> Summary: If you have a flat panel monitor *and* it has its subpixels
> arranged like below, go for ClearType. If not, go with Matrox Glyph
> anti-aliasing.
Are you speaking from experience or just theory? Have you tested both
scenarios on the same monitor/OS?
> ClearType compatible subpixel setup -- look *real* close, or use a
> magnifying glass to see if it matches:
>
> R G B|R G B|R G B|R G B|R G B
> R G B|R G B|R G B|R G B|R G B
> R G B|R G B|R G B|R G B|R G B
> R G B|R G B|R G B|R G B|R G B
> R G B|R G B|R G B|R G B|R G B
> R G B|R G B|R G B|R G B|R G B
>
> ClearType *incompatible* subpixel setup -- if you have this, ClearType will
> make things worse, with distinct coloured edges on letters:
>
> R R R|R R R|R R R|R R R|R R R
> G G G|G G G|G G G|G G G|G G G
> B B B|B B B|B B B|B B B|B B B
> R R R|R R R|R R R|R R R|R R R
> G G G|G G G|G G G|G G G|G G G
> B B B|B B B|B B B|B B B|B B B
I don't get any colored edges on letters thanks to the ClearType Tuner. Without
the tuner, I've seen what you're talking about though. My fonts are fat and dark
black. I run 1600x1200 with font sizes scaled up to around 135%. Text on my
screen is very close if not exactly the size of 10 pt font printed. (My G90fb is a
shadow mask monitor and not an aperature grill type).
AJ