On Tuesday, June 15th, 2021 at 12:16, Pekka Paalanen <ppaalanen@xxxxxxxxx> wrote: > Good reminder about CRCs. CRCs have zero tolerance, so they are not > useful for testing properties that have any leeway, are they? IIRC, IGT's alpha blending test currently computes the CRC for all possible roundings, then checks that the hw returns one of the acceptable CRCs. With more complex color management properties, this approach might not be possible and write-back support in hw drivers would really help.
