Tim wrote:
Bert Freudenberg <bert at impara.de> wrote:

> Am 05.11.2004 um 22:15 schrieb Tim Rowledge:
> 
> > I've just been testing out something in a 3.8b
image on my pMac and
> > noticed a strange colour effect. The default for
the vanilla image is
> > 16bpp and it looked just awful on a 32bpp display
- very visible
> > dithering on the gradient backgrounds of the
menus, change in desktop
> > colour etc. Setting Squeak to 32bpp made it looked
ok.
> > On Acorn it looks the same in 16 or 32bpp
settings. :-)
> 
> John only recently fixed this, in 3.7.5b1.
SO it did. Looks much better now.

tim
--

addendum: I noticed this problem too and did a little
looking into it.
ON a 9.1 MacOS, I'm running sq 3.9a (seems to be in
all of them) on
 mostly the Squeak 3.7.4Beta1.app.
Gradient fills would have a sort of stepping effect if
squeaks screen depth setting did not match my macs
hdwe screen depth and go away if it did.

 
When I tried this with a Squeak 3.7.5Beta1.app vm. 
The same thing happened! ! ! 


I tried grabbing a rectange of the funny gradient and
exporting it as a jpg but when I later viewed it with
picture viewer it was perfectly normal.
So my suspicion was not the vm but the stuff inside
squeak that converts between screen depths on the way
to the display screen. I know there are other things
it doesn't do right so its high on my list of the
usual suspects.

My earlier squeaks wouldn't recognize a 32bit screen
depth only 16bit and I believe I turned my hardware
settings down to get better looking gradients.  So
that the bug has now appeared going the other way I
consider progress.




		
__________________________________ 
Do you Yahoo!? 
All your favorites on one personal page – Try My Yahoo!
http://my.yahoo.com