libvlc_unity_get_texture is called by the Unity loop and
we need to make sure the player is actually playing to avoid it causing freezes

- remove m_d3dctxUnity
- remove locks in StartRendering
- enable multithread on m_d3dctxVLC

ba5af5da

display is not smooth, need more investigations

Steve Lhomme authored Aug 20, 2020 and Martin Finkel committed Jul 21, 2021

We read and reset under lock so we should do the same when writing it

Martin Finkel authored Aug 19, 2020 and Martin Finkel committed Jul 21, 2021

The texture is already shared between VLC and Unity

This reverts commit 4ffe2e93.