[quake3-bugzilla] [Bug 5511] New: r_ignorehwgamma 1 does not actually turn on software gamma

[bugzilla-daemon at icculus.org]

https://bugzilla.icculus.org/show_bug.cgi?id=5511

           Summary: r_ignorehwgamma 1 does not actually turn on software
                    gamma
           Product: ioquake3
           Version: SVN HEAD
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P3
         Component: Video
        AssignedTo: zakk at icculus.org
        ReportedBy: belyshev at depni.sinp.msu.ru
         QAContact: quake3-bugzilla at icculus.org


Created attachment 3143
  --> https://bugzilla.icculus.org/attachment.cgi?id=3143
Fix "r_ignorehwgamma 1" and support for "r_ignorehwgamma -1"

Due to poor support for hardware SDL gamma (see
http://bugzilla.libsdl.org/show_bug.cgi?id=971 ), software gamma is important,
but currently there is no way to actually turn s/w gamma on if SDL pretends to
support h/w.

Currently, r_ignorehwgamma 1 just turns off calls to GLimp_SetGamma() without
resetting glConfig.deviceSupportsGamma to zero, which results in dim output.

Fixed by a simple patch that also adds support for forcing hardware gamma via
"r_ignorehwgamma -1".

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