Turning performance of signature hashing

[magick]

We get the same signature for Q8, Q16, and Q16HDRI for your image:

Code: Select all

signature: 91460fb1d8dd878bbfb0ea82281c46aa7493b82bf11ac5ca47120adb403d8728

[mbrijun]

@magick - I have re-run the tests with the version "7.0.8-45 2019-05-13" and the result is identical to yours for both Q8 and Q16. The issue has been successfully fixed. Thank you very much!