Comment 4 for bug 80921

Created an attachment (id=8715)
patched example 1

(In reply to comment #2)
> Here is a proof-of-concept kludge.

I gave it a shot and it works quite well (at least superficially).
I cannot add much for the implementation but I can try to document the change.

I’ll attach some examples with mixed copy in pairs; with (SR) and without the patch (noSR).

Switching back and forth helps seeing what differences there are.
For me small type has better contrast with subpixel rendering, but quite obvious kerning problems are apparent with SR. Those also appear elsewhere (e.g., GTK windows)
Ignore the graphics in the Nature example, they are not antilaliased because Ubuntu builds poppler with splash only.

TBH I expected a more salient effect, one that was immediately apparent patching Xft for browsing for instance. Perhaps this is due to the fact that in PDFs the point sizes vary so much.