[Bug 38879] New: wbemprox fill_videocontroller calls are expensive

https://bugs.winehq.org/show_bug.cgi?id=38879

Bug ID: 38879
           Summary: wbemprox fill_videocontroller calls are expensive
           Product: Wine
           Version: 1.7.41
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: wmi&wbemprox
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 51812
  --> https://bugs.winehq.org/attachment.cgi?id=51812
wbemprox: cache videocontroller queries

Specifically League of Legends likes to continuously ask for video controller
specs while in game (every 4 seconds or so).

On my (old?) box this leads to a pretty big framedrop (~15fps when capped at
60) due to dxgi being initialized every time (and thus wined3d) by the
fill_videocontroller function.

The proposed solution caches results for subsequent calls, but I'm not sure
about the implications (i.e. do we expect any of those fields to change in the
lifespan of a wine application?)

Comments welcome

Greets