[mythtv] deinterlacers on AMD/ATI VDPAU

[Warpme]

Hi all.

I'm working on adding AMD/ATI HW accell to my project.
Hw accel. works OK - but I have q about deinterlacers and VDPAU.
Currently MythTV for VDPAU allows to choose deinterlacers mainly from 
Nvidia hardware based set.
When user has AMD/ATI gfx and uses HW accell based on Mesa/UVD - Nvidia 
deinterlacers doesn't make sense.

My Q is: is limitation of aval. deint. in VDPAU (Nv subset) because of 
arbitrary choice or rather it is because supported data flow (in Nv 
decoder out is fed to deint. in Nv hw. For other setups it will need 
copy video frame to memory back and forth)?

br