How draw primitives with antialias in offscreen context?

[Fregl]

Hello. Need draw some graph primitives like lines and circles in offscreen context with antialiasing. does anybody know, is it real to do and how? if not, where i can take source of antialias drawing? thanks

[micro]

The general primitives should be easy to draw, the antialiasing i am not sure off. Worst case you would have to do this yourself