[PD] chroma key with PD?

Mathieu Bouchard matju at artengine.ca
Sun May 14 01:15:05 CEST 2006


On Thu, 11 May 2006, Marius Schebella wrote:

> in (new versions of) GEM you have pix_chroma_key - works for RGB and YUV, if
> you have black background you could also use alphablending.
> and there are also good pdp objects.

Make sure you use the correct ranges with [pix_chroma_key] because it's
rather non-standard. It wants values from 16 to 239 in YUV, instead of
from 0.0 to 1.0 in RGB. (I don't recall whether this is supposed to change 
in the next version of GEM)

 _ _ __ ___ _____ ________ _____________ _____________________ ...
| Mathieu Bouchard - tél:+1.514.383.3801 - http://artengine.ca/matju
| Freelance Digital Arts Engineer, Montréal QC Canada




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