Type in the possible values and hit ENTER to apply them. Clearing the input field and hitting ENTER again brings back the default value.

Overrides the colour space the shader uses for its calculations.
Possible values of interest are CSP_HDR10 for HDR10 and CSP_SCRGB for scRGB.
Sanity check the values the shader outputs as this is a manual override.

Choose between the CIE 1931 xy diagram or the CIE 1976 UCS u'v' diagram.
Possible values are CIE_1931 and CIE_1976.