[FFmpeg-cvslog] dxva2: get the slice number directly from the surface in D3D11VA

ffmpeg | branch: master | Steve Lhomme | Wed Jan 4 13:44:12 2017 +0100| [f67235a28cef44fcd97ae74ad53bbbc0d7f63d60] | committer: Anton Khirnov dxva2: get the slice number directly from the surface in D3D11VA No need to loop through the known surfaces, we'll use the requested surface anyway. T

[FFmpeg-cvslog] dxva2: get the slice number directly from the surface in D3D11VA

ffmpeg | branch: master | Steve Lhomme | Fri Jan 13 14:01:06 2017 +0100| [153b36fc62849e0e1540a43829794e0503994ebb] | committer: Michael Niedermayer dxva2: get the slice number directly from the surface in D3D11VA No need to loop through the known surfaces, we'll use the requested surface anyw