Linear to Slog3 not working properly

[groucho86]

Hello,
I have a SGamut3.Cine Linear EXR. It seems like the Linear to Slog3 conversion is clipping in the highlights.

import vapoursynth as vs
import muvsfunc
core = vs.get_core()

input_path = 'source_sgamut

c = core.imwri.Read(input_path,float_output=True)
c = core.fmtc.transfer (clip=c, transs='linear', transd='slog3')
c.set_output()

I'm attaching:
source_sgamut3cine_linear.exr <-- source file
resolve_delinearized.tif <-- expected result
vs_delinearized.png <-- fmtconv result

linear_to_slog3_tb.zip

[EleonoreMizo]

Indeed.
This should be fixed with the r21 release.