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.
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So what's the problem with 3.7.5bx?
Also I'm not sure what you mean by your comment that earlier squeaks (image:? VM?) wouldn't recognize a 32bit screen depth?
On Nov 28, 2004, at 9:51 PM, Peace Jerome wrote:
-- 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.
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