[Bug 50235] Broken rendering in Sniper Elite 3

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50235

Olivier F. R. Dierick <o.dierick at piezo-forte.be> changed:

           What    |Removed                     |Added
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                 CC|                            |o.dierick at piezo-forte.be

--- Comment #4 from Olivier F. R. Dierick <o.dierick at piezo-forte.be> ---
Hello,

I noticed a fps drop in The Elder Scrolls Online after updating from wine 5.21
to 6.0-rc3.

The regression test shows that the performance issue is first introduced by
commit 77f0149 and after reverting that, secondly by commit 8b3cc57. That led
me to this bug.

Reverting 77f0149 fixes the issues until commit 8b3cc57. After that commit,
reverting both, with a tweak, makes the application render as fast as before,
up to wine 6.0-rc3. The tweak reintroduces the definition of
WINED3D_BUFFER_APPLESYNC and 'coherent' to the members of 'struct
wined3d_bo_gl', used by later commits, to avoid compilation errors.

I also tested the hack and the patch:

With the hack from comment 1, all the memory was consumed before getting to
actual gameplay, the game got stuck loading the saved character, presumably
using disk swapping, and I had to kill the process.

The patch from comment 2 didn't have any visible effect on the performance
issue.

On Nvidia RTX 2070 with proprietary driver 450.80.02.

Regards.

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