[Bf-committers] Color correction in sequencer.

[Xavier Thomas]

Hello,

Lately, I was trying to implicate me in blender developement,  and begining
with small things (after the keyr node) I  desided to correct this bug:
http://projects.blender.org/tracker/index.php?func=detail&aid=18010&group_id=9&atid=125

Basicly the lift parameter of color correction in sequencer works more like
a "value" color correction than a "lift" (exept that it work on RGB channel
separately so I think "ofset" is more apropriate then "value")

Fixing it would be simple but old files that use this parameter will have a
diferent render result, and after discussing with Matt Ebb on IRC it seems
that this is not acceptable.
So the only solution to have a proper color correction in the sequencer is
to add an "ofset" parameter. Is this OK ? (maybe the UI will get too
compact)

Further, why do not put this kind of function in an image library so it will
be accesible form other part of the program (nodes and maybe image editor)
like the quick blur function in the nodes CMP_util.h

Sorry to disturb, I know lot of you are really buzzy but I prefer to get
good directions before coding.

Thanks

Xavier
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