ACES Preview LUTs for Substance Painter

(⏬ LUTs and HDA available on Gumroad! https://gum.co/aplfsp)

I made two LUTs for previewing ACES ODTs Rec. 709 and sRGB in Substance Painter's material display.

This solution relies on the Reinhard tonemapping available in Painter. The resulting LUTs give good color accuracy, and good handling of highlights, when compared against pre-rendered images. The LUT maker is packaged as a Houdini Digital Asset.