[Bug 42141] Star Ruler 2 black screen on macOS and FreeBSD

wine-bugs at winehq.org wine-bugs at winehq.org
Wed Jan 4 10:06:55 CST 2017


https://bugs.winehq.org/show_bug.cgi?id=42141

--- Comment #12 from acescopezz at gmail.com ---
(In reply to Ken Thomases from comment #11)
> (In reply to acescopezz from comment #10)
> > What I don't understand is why it says my OpenGL version is 2.1, because I
> > looked around on Google, and my iMac with that GPU should have OpenGL 4.1,
> > but it could be that I'm not understanding something here.
> 
> Thanks for those other logs.  Unfortunately, they don't really tell us more.
> They confirm that the problem wasn't confined to that older version of macOS
> nor the GPU.
> 
> It's reporting OpenGL 2.1 because things got complicated with OpenGL 3.0 and
> later.  It's no longer the case that there's just a version number, there
> are now different flavors (known as "profiles") of OpenGL.  There's the core
> profile vs. the compatibility profile.  Within the core profile, there's the
> full profile vs. the forward-compatible profile.  If a platform offers a
> high version (e.g. 4.x) of the compatibility profile, an app will get that
> with no special steps on its part.  However, because the core profile has
> had functionality removed, the app won't get a core profile unless it
> specifically tells the system it can handled it.
> 
> MacOS only offers versions of OpenGL higher than 2.1 in the
> forward-compatible core profile.  Apps won't be able to get OpenGL 4.1
> support unless they specifically say they can accept the forward-compatible
> core profile.  The Mac driver supports an app requesting that, but Star
> Ruler 2 does not do so.  So, it's limited to OpenGL 2.1 on the Mac. 
> According to the minimum requirements for the game on its Steam page, that
> should be enough, but it apparently requires/assumes specific extensions.

Thank you very much for taking the time to explain all that. 
Should I change the status to 'INVALID', since it seems to be a game bug?

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