[Lcms-user] Profile linearization and softproofing

[Aurélien P. <re...@au...>]

Hi,

I'm working on the software darktable to enable a linear workflow (no
gamma correction from the display, this is done by a log2 function
internally), in order to visualize the data in the scene-referred space.

To convert from internal Lab to display RGB (or other spaces, for image
export), darktable uses :

    d->xform = cmsCreateProofingTransform(Lab, TYPE_LabA_FLT, output,
    output_format, softproof,
                                              out_intent,
    INTENT_RELATIVE_COLORIMETRIC, transformFlags);

I'm looking for a way to keep the RGB primaries but remove the
TCR/tonecurve from that xform in order to suppress the gamma correction.
So far, I'm clueless. Is that possible ?

Thank you,

Aurélien.