Re: Bugreport from mozilla bug database

At 12:06 AM 7/7/2004 +0200, Gerard Juyn wrote:
>Glenn,
>
>There's a "smart" decision in the glue-code to use a different canvas-style (to 
>reduce memory-overhead) which is based on libmng prediction of an alpha-
>channel being present or not. These problems sound like there's something 
>fishy in that area.
> 

Thanks for the hint.  That was it.  The mistake is in libmng, however;
it is returning "iAlphadepth==0" instead of "1" for standalone PNG files
even when there is "cheap" binary transparency conveyed by the tRNS chunk.
I'll check in the fix today.

Glenn



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