Bugs item #2835102, was opened at 2009-08-10 21:22 Message generated for change (Tracker Item Submitted) made by zmoelnig You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=2835102...

Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: None Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: IOhannes m zmlnig (zmoelnig) Assigned to: Nobody/Anonymous (nobody) Summary: pix_add yields incorrect results

Initial Comment: i noticed that a patch which adds to pixes (for a feedback) behaves differently on RGBA and YUV: running on YUV will create some saturated effects, while on RGBA it looks ok. a closer inspection of my patch showed, that i am pre-multiplying the two images one with 1.001 the other with 0.001; i guess i did this, because on RGBA (which is my default colourspace) the image started to fade-out if the 2 values sum-up to 1. so the problem seems to be in RGBA rather than YUV...

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You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=2835102...