I’ve encountered a problem about “Screen-oriented Text” in Rhino 6. Nothing is displayed in rendered view, but it’s working in the other view mode. I’ve checked the options in rendered view but nothing changed. Have you met the same problem like this?
This is not a bug, this is a change in how Rhino 6 rendered view treats Grasshopper geometry - only explicitly “rendered” geometry from the custom display component will show in a rendered viewport - note that even a normal grasshopper text tag does not display in the rendered viewport.
You can’t. The GH/Rhino developers would have to make fundamental changes to allow this. The only mechanism now would be to convert your text to outlines (scripts floating around or use wombat) and make surfaces from those and add them to a custom preview component - this is liable to be a bit slow and may not look great.