[BUG] forms with bad alpha values?

Ned Konz ned at bike-nomad.com
Sun Sep 7 18:54:40 UTC 2003


On Sunday 07 September 2003 11:36 am, Andreas Raab wrote:
> > It looks like the alpha channel is being set to 0:
>
> Yes. This problem has been reported several times in the past and
> there are at least three messages I wrote on this subject in the
> past (not that I have them handy though ;)

I found the following (in response to my mentioning this earlier):

On Thursday 27 February 2003 12:43 pm, Andreas Raab wrote:
> Ned,
>
> I think you're seeing a problem which I've seen in Croquet all the
> time. There are some rather obscure circumstances in which alpha
> extension from 16 to 32bpp is not correctly handled by BitBlt.
>

What's interesting to me is that it works in the Squeakland image 
(which is derived from 3.2), with the same VM.

So I'm a bit puzzled as to what may have changed since then.

-- 
Ned Konz
http://bike-nomad.com
GPG key ID: BEEA7EFE



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