Add reference frames to D3D11 hardware decoding so that adaptive and motion compensation deinterlace works

[Aktanusa]

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meta:feature-request

Expected behavior of the wanted feature

Currently, it seems the D3D11 deinterlacing is set to bob. According to this MS link, this is due to not having enough reference frames. When comparing vf_d3d11vpp.c to a sample of other D3D11 deinterlacing code like MPC Video Renderer here and VLC here, it seems to be missing usage of PastFrames and FutureFrames, which I believe they are used for reference frames. Going by MPC-HC, I think 4 frames are needed at least.

Alternative behavior of the wanted feature

Log file

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[Aktanusa]

I'm not sure what you are asking. VLC has varies deinterlace modes, and the naming depends on using DXVA or D3D11. As far as I can tell, it does support 2x FPS mode.