Mac OSX display depth colour oddness

John M McIntosh johnmci at smalltalkconsulting.com
Mon Nov 29 20:15:38 UTC 2004


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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--
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===
John M. McIntosh <johnmci at smalltalkconsulting.com> 1-800-477-2659
Corporate Smalltalk Consulting Ltd.  http://www.smalltalkconsulting.com
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