Draw symbolic icon on snapshot: antialias?

Platform
1

Hello,

I’m trying to draw my own widget, that means implementing snapshot() on it. When drawing on the snapshot, append_fill() works as expected. I also managed to draw symbolic icons, however they are completely not anti-aliased and therefore very ugly. I’m not sure what I’m doing wrong?

            let icon_paintable = gtk::IconTheme::default().lookup_icon(
                "view-reveal-symbolic",
                &[],
                16,
                16,
                gtk::TextDirection::Ltr,
                gtk::IconLookupFlags::FORCE_SYMBOLIC,
            );

            icon_paintable.snapshot_symbolic(snapshot, 16.0, 16.0, &[gdk::RGBA::BLACK]);

Thank you!

Emmanuel