[Bug 44985] Many applications using CEFv3 Angle OpenGL ES 2.0 for H/W Accelerated Canvas and WebGL display blank/black windows (disabling or removing 'libglesv2.dll' is a workaround)

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=44985

--- Comment #30 from Olivier F. R. Dierick <o.dierick at piezo-forte.be> ---
Hello,

Origin is also affected.
https://appdb.winehq.org/objectManager.php?sClass=version&iId=26175

Injecting --single-process helps but is not enough (errors in
qtwebengineprocess.exe keep popping endlessly).

I tried --single-process with --disable-gpu (inspired by similar bug 48618
affecting Wargaming.net Game Center).

With those two parameters, there are still a few qtwebengineprocess.exe errors,
but they don't come back when dismissed and the UI does render.

I also tried each --use-angle=* parameters, but none did help.

Injecting " --single-process --use-gl=desktop" gave the best result so far:
There are no qtwebengineprocess.exe errors until the application is closed.
Then there are 3 error dialog that can be dismissed.

The wineserver doesn't exit properly though, and I have to kill winedbg
leftover processes, but that's common to all parameters combinations.

I got the CEF parameters from:
https://peter.sh/experiments/chromium-command-line-switches/

Regards.

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