Hi Michael,

the qtgears.exe is available from http://lab.bachem-it.com/opengl/qtgears
It is based on mesa's glxgears and also provides the source code there. Unfortunately I am not fluent enough in C++ to tell, sorry...

If you happen to know a simple Wine Direct3D/OpenGL application that renders into a regular X window I could probably make a test from the "other side"...

Which versions of Wine and XQuartz/X11 have you been testing with? What type of Mac and OS X version are you running on, if I may ask?

Thank you for all those efforts!
Chyman