[vdr] Improving DXR3 OSD

I've been thinking about the following idea for few weeks now. I'm not sure if it's possible to implement, but it's interesting thought though.

The idea is: is there an OSD frame buffer somewhere inside the DXR3, and would it be possible to write OSD data directly into it (without constructing dvd-compatible "osd-stream", which is the cause of all problems as far as I can see).

I really don't know if this is technically possible at all, but I saw at some page (which I cannot find anymore) a program, which wrote pictures (=video) directly into DXR3 frame buffer (i.e. decoded video outside of DXR3 and wrote rgb or yu12 (or whatever format was required) directly into the frame buffer inside DXR3).

Teemu