The bug is easily reproducible. I am suspicious that it might have something to do with the application's use of FBO's, but I'm not entirely sure what the problem could be, as other apps that render to FBO's are known to work with VGL. The application is clearly calling glXSwapBuffers() (via glutSwapBuffers()) to swap the back buffer to the front buffer, so that means it has somehow transferred the image from the FBO into the back buffer already, and thus VirtualGL should be picking up the pixels. Obviously it isn't, but after 5 hours of poring over it, I have no clue. I would suggest maybe contacting the voreen developers to see if they can at least shed some light on how their application is drawing pixels to the canvas. That could give me a clue as to why it isn't working properly in VGL.
On 1/27/14 6:49 AM, Dr. Roman Grothausmann wrote: > Dear Mailinglist members, > > > Our virtualGL setup works perfectly so far (fiji, paraview, VTK-apps, ..), > except for the render canvas window of voreen (http://voreen.uni-muenster.de/ > self-compiled) which reacts to mouse input but is always black. When voreen > ist > started on a local desktop with a similar system set-up (Debian 7.1, > 3.2.0-4-amd64, NVIDIA Graphics card) the canvas window works flawlessly and > shows the actual render image. > > Could this be a virtualGL compatibility problem? > Or do we need some specific options for this application? > > Sadly, no error is reported by voreen (see log below). > > Many thanks for any help or hints > Roman ------------------------------------------------------------------------------ WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991&iu=/4140/ostg.clktrk _______________________________________________ VirtualGL-Users mailing list VirtualGL-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/virtualgl-users
