[Interest] font smoothing gamma changes in Qt 5.9?

René J.V. Bertin rjvbertin at gmail.com
Fri Dec 22 17:49:10 CET 2017


On Thursday December 21 2017 17:05:45 Allan Sandfeld Jensen wrote:

>Note newer versions of freetype (since 2.7) already include the most of the 
>infinality changes as a runtime option. 

Yeah, Freetype has been getting better but in practice they didn't include the major changes. I think cost was cited as one of the reasons not to.

>
>It is possible something else changed for you. 

At the same time as changing the Qt version? Nothing that qualifies, and I tried going back to 5.8 too. 
I can of course have a look at that new stem darkening code, what files would I be looking at?

>The stem-darkening and gamma-
>correcting if gone wrong, would either make text look paler or bolder, but not 
>blurry, blurry sounds lcd-filtering or subpixel positioning changing.

Did I suggest blurry somewhere to refer to the changed font rendering in Qt? If I did it was probably because text does get to look a bit blurry when you make it pale or bold enough, but the issue here is mostly too-pale fonts with the default gamma setting.

R.



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