Quote:
Originally Posted by mp3dom
ImageSource and ImageReader both gives the same output.
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Of course, for most input formats they are just aliases of one single function. A difference might exist if you change the decoder, e.g. using DevIL or not.
Do you have samples of such wrong results (original image + wrong overlay result in a script)? I wonder where such issues appear, I could imagine in areas which should be completely transparent: Here the alpha channel may hide the fact that there are areas of full transparent color A next to full transparent color B, which would appear visibly if the transparency is incomplete by mistake. But then it may be rather in Overlay than in ImageSource.
Just a wild guess: Alpha channels are usual rather in RGB formats and should not have coring applied, even when the overlay result is in YUV format.