Re: [Gimp-developer] Some blend modes break in unbounded mode sRGB

This thread is huge and I’m not going to attempt to address
everything, but in the context of:

1. Multiplying and dividing by any color other than gray, black, or white.
2. Any blend mode that involves multiplying or dividing, including burn, dodge, soft light, hard light.
3. The lighten only, darken only, hue, saturation, color, and value blend modes.

It is *completely trivial* to make the working space user selectable
as long as it is some form of red-green-blue-alpha. The current gamma
vs linear layer mode is an if statement in
app/operations/gimpoperationpointlayermode.c :
gimp_operation_point_layer_mode_prepare(); in paintcore it would
involve changing the linear_mode boolean into a Babl format object.

This does not apply to GEGL as a whole which is very fond of picking
specific formats, but Gimp being able to switch between linear/gamma
mode means most of the instrumentation for supporting custom working
profiles is already there.

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