Adopt ddraw-Rendering_Targets patch from staging

[tannisroot]

Apparently, many old DX3-7 games rely on being able to create a rendering target in system memory rather than video memory, and mainline Wine does not support that. This patch from Staging solves this issue by creating the render target in video memory instead.
Some notable games that depend on this according to WineHQ: *The Sims, Zoo Tycoon, TOCA Touring Car Championship, Conquest: Frontier Wars (the latter is available on Steam and has a demo)
However, there might be many more games out there that depend this feature, there are just the ones that were reported to use it.
I can personally confirm that it works very well with The Sims and that game was stable for hours and hours.
The patch: https://github.com/wine-staging/wine-staging/tree/master/patches/ddraw-Rendering_Targets
The WineHQ issue: https://bugs.winehq.org/show_bug.cgi?id=34906

[aeikum]

Thanks for the suggestion. I've asked for some input from our d3d devs, will keep you posted.

[jqadev]

Any update on this patch? I can see that there is a silence in the WineHQ issue. Maybe you should create a PR here.

[aeikum]

This bug was fixed in upstream Wine, and those commits have been backported in Proton 6.3-4. Can you retest and confirm that it is fixed?