Hi Tim,

Quoting tim Rowledge <tim at rowledge.org>:

> ...
>
> I think you’re right but it’s probably going to be ‘fun’ to fix. The  
> Scratch code is handling forms with transparency pretty well in  
> almost all cases (except this dratted banana bunch!) using ‘paint’.  
> I’ll have to see if the ARM specific bitblt improvements allow me to  
> use ‘blend’ without killing display performance. Hmm, maybe if I  
> ‘blend’ it into another Form and ‘paint’ that?

That will most likely leave R, G and B alone, not zeroing them. A  
rather crude hack you might use is calling #preMultiplyAlpha. This  
will fix this case. But it will ruin any Form with alpha values other  
than 0 or 255, i.e. actual translucency.

Something else that might work is blitting the Form on a new one, with  
an appropriate ColorMap.

>
> tim
> --
> tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
> "Oh bother" said Pooh, as he reached for the reset button

Cheers,
Juan Vuletich