[d3d9] Source Filmmaker replay flicker

[Blisto91]

Now that #4201 is fixed the flicker issue is back.

When you replay a film in Source Filmmaker the viewport will flicker black including HUD and all. This does not happen with wined3d.
To reproduce open Source Filmmaker via Proton Bleeding Edge and start a session with a film. I usually just open Meet The Heavy. When you pres play you should notice that the film viewport will flicker.

Video example: https://youtu.be/vqmNxFMg9SY

Software information

Source Filmmaker.
Loading a session with a film to replay e.g Meet The Heavy

System information

• GPU: RTX 4080
• Driver: 550.40.71
• Wine version: Proton Bleeding Edge
• DXVK version: Master

Apitrace file(s)

TBD if useful

Log files

steam-1840.log