The fglrx driver is an X11 only thing

It means "FireGL and Radeon for X".

Change-Id: I188fa03a113d9977a7a240bc0fc9f6dc9be054b8

slideshow/source/engine/OGLTrans/generic/OGLTrans_TransitionerImpl.cxx

@@ -330,9 +330,10 @@ void OGLTransitionerImpl::impl_initializeFlags( bool const bValidContext )
         SAL_INFO("slideshow.opengl", "GL version: " << mnGLVersion << "" );
 
         const GLubyte* vendor = glGetString( GL_VENDOR );
-
+#if defined( UNX ) && !defined( MACOSX )
         /* TODO: check for version once the bug in fglrx driver is fixed */
         mbBrokenTexturesATI = (vendor && strcmp( reinterpret_cast<const char *>(vendor), "ATI Technologies Inc." ) == 0 );
+#endif
     }
     CHECK_GL_ERROR();
 }