http://bugs.winehq.org/show_bug.cgi?id=9892
--- Comment #12 from Michal Seliga michal.seliga@visicom.sk 2008-03-09 18:44:38 --- sorry. glsl i am using always, with pbuffers it crashed, in appdb i found recommendation to use backbuffer...now i tried fbo and it works..rectangle is gone. thanks