how to merge two XImage ?

[Franck Juers]

hello,


I need to merge two XImage, one will be the background and the other will be
the foreground.
I need to set a color as 'transparent' for the foreground...

Right now, what I'm doing is a loop on the pixels,
for each pixel I check if the color is or not the "transparent" color and I
set the pixel of the final image with the right one...

I'm using XGetPixel and XPutPixel... the whole process seems a little
slow... images are 1280x1024x24,
is there a fastest way to do it ???


thank you,


Franck
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