[Bug 51848] Performance Regression in Secondhand Lands

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51848

Conor McCarthy <cmccarthy at codeweavers.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |cmccarthy at codeweavers.com
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1

--- Comment #6 from Conor McCarthy <cmccarthy at codeweavers.com> ---
I think this is a driver problem. The chosen GL pixel format with
WGL_SWAP_COPY_ARB is identical to the one chosen without this patch except for
the different swap attribute. I found nothing wrong with how the pixel format
is used. There were no GL errors and no assertion failures in a Mesa debug
build. No effect occurs in swapchain_gl_present() because
swapchain_present_is_partial_copy() is false anyway. The problem persists if
the changes to swapchain_gl_present() are reverted.

On my system with an RX580, it freezes the entire X window UI, so the exe must
be terminated from an alternate console. This problem is worse in Secondhand
Lands because X window doesn't unfreeze after I terminate the game.

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