Re: [GM-help] png, transparency and composite

[Bob F. <bfr...@si...>]

On Tue, 22 Apr 2008, florian iragne wrote:
>> For the Q32 build it looks like the above line of code can overflow so 
>> thanks for drawing my eyes to this line of code.
>> 
>> If you always want to impose your own absolute opacity value, you can set 
>> the matte attribute to false prior to setting the opacity.
>
> Thanks for the clear explanation and the tips! It works perfectly.

I did some reasearch as to where else this underlying function is 
being used in GraphicsMagick.  It turns out that it is only being used 
in one obscure area of the drawing/rendering code.  For some reason 
there is no command line option to use it.

Bob
======================================
Bob Friesenhahn
bfr...@si..., http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/