[Bug 31297] New: Device can't draw to d3dfmt_A16B16G16R16f

http://bugs.winehq.org/show_bug.cgi?id=31297

Bug #: 31297
           Summary: Device can't draw to d3dfmt_A16B16G16R16f
           Product: Wine
           Version: 1.5.8
          Platform: x86-64
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: directx-d3dx9
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
                CC: [e-mail]
    Classification: Unclassified

Created attachment 41130
  --> http://bugs.winehq.org/attachment.cgi?id=41130
Output from WINEDEBUG=+d3d wine grimrock.exe

Game Legend of Grimrock will not start.  Fails with "Device can't draw to
d3dfmt_A16B16G16R16F."  
Output of WINEDEBUG=+d3d wine grimrock.exe and glxinfo attached.
Note that LoG plays fine under Win7.
Graphics card is Nvidia GT 555M 2048MB with Optimus.
Note that Steam starts before the game does.