> ... and presenting 0.0 as black and 1.0 as white internally is
> totally out of the question?

No. :-)

>  With your proposed studio swing
> mapping most compositing and filtering operations have to scale
> and bias to work right.  E.g. black + black + black will be a
> shade of gray, unless a bias is subtracted.

Yup.  I was suggesting it as something of a path of least resistance.
For the record, we already have this problem with studio swing.

> How much is a lot?  One conversion entering the pipeline, and another
> exiting the pipeline?

Any color filters that expect to operate on R'G'B' rather than RGB.  I
think in most cases, these operations only work on R'G'B' to avoid the
additional conversion, but there are probably at least a few that
really do want the gamma space.  They'd have to convert.

> The dilemmas just won't end, will they? :-/

If it was easy, it would be done already :-)

Monty

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