Re: [PATCH v2 0/5] MR551: win32u: Complete support for display modes in nulldrv.

[Zhiyi Zhang (＠zhiyi)]

Zhiyi Zhang (@zhiyi) commented about dlls/win32u/sysparams.c:
> memset( &devmode->dmDriverExtra, 0, devmode->dmSize - offsetof(DEVMODEW, dmDriverExtra) );
>
> if (index == ENUM_REGISTRY_SETTINGS) ret = read_registry_settings( adapter_path, devmode );
> -    else ret = user_driver->pEnumDisplaySettingsEx( device_name, index, devmode, flags );
> +    else ret = user_driver->pEnumDisplaySettingsEx( device_name, ENUM_CURRENT_SETTINGS, devmode, flags );

If you're enumerating available modes and EDS_ROTATEDMODE is not specified. You don't need to query the current display mode, which is quite expensive and should be avoided.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/551#note_5240