and please, indulge me: what is primitive in tone mapping in Corona? what is missing?
I wrote about the shortcomings more than a year ago and not only me
incorrect operation in Log mode - shadow areas simply disappear, shadows are covered with a black film, compression gives an unpleasant result, and so on
you can look through the forum, there are topics with discussions of tonemapping problems
an example: tonemapper part of ACEScg>sRGB transform simulated with CIE. curve. it's just a curve. attached as LUT.
Well, if it doesn't have any differents why Corona team spent more than one year for this development and explained why the dropped this feature for 8th release instead 7th?