https://bugzilla.redhat.com/show_bug.cgi?id=1545149



--- Comment #11 from Pierre Ossman <[email protected]> ---
instead. (In reply to Nikolaus Waxweiler from comment #8)
> Do you mean subpixel rendering?
> 

Right, sorry. ftview does its own thing, so I started simply comparing GTK
applications. The setting I was referring to here is "Antialiasing: Subpixel"
in GNOME Tweaks.

> This is interesting. In ftview from that build, If I enable normal
> anti-aliasing (A) and forced autohinting (f) and switch to subpixel
> rendering (C) and forced autohinting, some glyphs seems to glitch by being a
> pixel or so wider at 16px (e.g. i, j, doubles quotes). Aside from that,
> nothing changes significantly?
> 

ftview's rendering doesn't seem to be representative of what GTK does, so it
might not be the best test case. Your image does show a bit of the tendencies
though as there are a lot of single pixel wide stems in the lower left example.

(and the glitch is mentioned on bug 1035486 comment #36)

> In the newest ftview from git, I can't seem to enable full autohinting with
> subpixel rendering.

Isn't that the problem though? Neither ftview nor GTK is able to get that mode
fully working.

(In reply to Nikolaus Waxweiler from comment #10)
> Going on a limb here, have you tried enabling warping? Only available in
> slight autohinting mode.

It seems to have some effect, but it doesn't even compensate for the extra blur
caused by going from full hinting to slight.

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