[Bug 22303] Fallen Earth MMO : GL_APPLE_flush_buffer_range causes performance drop on OSX

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=22303

Stefan Dösinger <stefan at codeweavers.com> changed:

           What    |Removed                     |Added
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                 CC|                            |stefan at codeweavers.com

--- Comment #8 from Stefan Dösinger <stefan at codeweavers.com> ---
These lines exist at least since 2012 according to git blame (where e834c920e
moved them around), and if my memory serves me right I added them even earlier
when I added GL_ARB_map_buffer_range support. It's just a precaution that we
don't have both extensions enabled at the same time.

OSX only supports GL_ARB_map_buffer_range in core contexts, in legacy contexts
we use GL_APPLE_flush_buffer_range. Wine uses legacy contexts unless you
explicitly enabled core contexts (e.g. for d3d10/11) in the registry because
some rarely used blit operations still rely on immediate mode draws.

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