With [vo=direct3d], mpv does not render osc/osd/logo when opening app without playing file (idle mode)

[Mark-Joy]

Important Information

Provide following Information:

• mpv version: 0.38.0
• Windows Version: Windows 10 IoT Enterprise LTSC
• Source of the mpv binary: sourceforge
• If known which version of mpv introduced the problem
• GPU model, driver and version: Intel(R) HD Graphics 530. Driver version: 31.0.101.2125
• Possible screenshot or video of visual glitches

vo-direct3d-bug.mp4

Reproduction steps

Create an empty mpv.conf and set vo=direct3d, then open mpv.exe

Expected behavior

Expect mpv to render controls osc/osd/logo when opening app without playing file (idle mode)

Actual behavior

Black screen, no osc/osd/logo was rendered
After loading a video file, osc/osd/logo was rendered correctly together with the video being played

Log file

vo-not-set-to-direct3d.txt
vo-direct3d-bug.txt

Sample files

No video file needed