[Bug 33885] New: Left4dead glitchy execution

http://bugs.winehq.org/show_bug.cgi?id=33885

Bug #: 33885
           Summary: Left4dead glitchy execution
           Product: Wine
           Version: unspecified
          Platform: x86-64
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
    Classification: Unclassified

when i start the first level, this error appears every second. everything about
the graphics looks fine, the game starts with no problem, except that with that
error coming out every second the game is running weirdly.

fixme:d3d:gl_blend_op Unhandled blend op 0.
err:d3d:state_blendop >>>>>>>>>>>>>>>>> GL_INVALID_ENUM (0x500) from
glBlendEquation @ ../../../wine-1.6.rc3/dlls/wined3d/state.c / 336

any idea what it could be?.

currently using: Slackware 64bits
wine: 1.6.rc3
video card: AMD Radeon HD 6520G