[PATCH v2 0/1] MR5978: winegstreamer: Optimise copy to DXGI buffer.

[Brendan McGrath (＠redmcg)]

Using IMF2DBuffer2_Lock2DSize with LockFlags_Write dramatically improves
performance over IMFMediaBuffer_Lock when using a DXGI buffer.

IMFMediaBuffer_Lock does not know that this buffer will not be read and
therefore performs an unnecessary transfer of the texture from GPU to CPU
before it is overwritten.

--
  v2: winegstreamer: Optimise copy to DXGI buffer.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/5978