Hi Lex,

I suffer the same problem in my video stuff.

Cheers,

Diego

> asFormOfDepth: doesn't fixup the alpha chanel on conversion from 16
> bits to 32 bits.  Similarly, drawing a 16-bit form onto a Form using a
> FormCanvas has the same problem.  Conversion from 8 bits to 32 bits has
> no trouble.
>
> What's up?  I notice a method called fixAlpha:with: with a very
> suggestive comment, but I don't know how to use it.  I post this in the
> hopes someone can suggest a one-line fix, before I delve deeper.
>
> My image is 3.5-5174 , though non-standard changes may well have crept
> in
> My VM is Ian's 3.4 release
>
>
>
> Lex
>
>
> =====
>
>
> form0 := ImageReadWriter formFromStream:
> 'http://www.squeakland.org/images/logo.jpg' asUrl retrieveContents
> contentStream.
>
> form32 := form0  asFormOfDepth: 32.
> form32 colorAt: 50 at 50    "transparent!!"
>
> form32 := (Form extent: form0 extent depth: 32).
> (FormCanvas on: form32) drawImage: form0 at: 1 at 1.
> form32 colorAt: 50 at 50   "also transparent"
>
>
> form32 := (form0 asFormOfDepth: 8) asFormOfDepth: 32.
> form32 colorAt: 50 at 50   "this is fine -- the problem seems peculiar to
> 16->32 conversions"