Graeme sketched a linearization method there:
https://lists.freedesktop.org/archives/wayland-devel/2019-March/040171.html
Sebastian prototyped there:
wayland-protocols!14 (commits)



Thanks to Pekka for great simplifications in implementation, like the xyz_dot_prod()
Quote: "should help untangle lots of the multiplications and summations by saying
we are computing dot products, etc".

The approach was validated using matrix-shaper and cLUT type of profiles.
If profile is matrix-shaper type then an optimization is applied.
The extracted EOTF is inverted and concatenated with VCGT, if it is availible.
Introduce function cmlcms_reasonable_1D_points which would be shared between
linearization method and number of points in 1DLUT for the transform.
Co-authored-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Co-authored-by: Sebastian Wick <sebastian@sebastianwick.net>
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>