I've looked a bit around and in particular in the poppler library code to see how it works, they use QRawFont in the Qt backend to exploit subpixel antialiasing

I've looked a bit around and in particular in the poppler library code to see how it works, they use QRawFont in the Qt backend to exploit subpixel antialiasing and native font technologies for each platform. We could do the same, essentially replace our glyph rendering code with something similar to their code. In this way we will make TeXmacs rendering similar to that of Okular, for example.