Hello Florent, On 04/26/2011 07:53 AM, Florent Berthaut wrote: > But I am having problems with the quad buffered stereo (with a Quadro FX > 3700 and Nvidia Vision). > > As usual, I use two StereoBufferViewPorts. > > When I run the application, and only if I deactivate the opposite > buffers (setLeftBuffer(false) on right viewport ...) , I get this > warning over and over: > > OSGLightChunk.cpp, 136 : light:activate:precheck failed: invalid > operation (0x502) .
the fact this comes from OSGLightChunk is probably a bit of a red herring here, it is most likely just the first time glError() gets called after the real problem occurs. > It doesn't crash the application but i think it slows it down a lot. yes, it can hurt quite a bit. > What can I do to prevent that ? the man page for glReadBuffer (http://www.opengl.org/sdk/docs/man4/xhtml/glReadBuffer.xml) says it will generate GL_INVALID_OPERATION if used with a buffer that does not exist. Are you certain to request (and get) a stereo capable OpenGL context? If that is not the problem, could you try running your application under an OpenGL debugger (e.g. bugle, glIntercept, gDEBugger) to find the GL call that causes the error? Cheers, Carsten ------------------------------------------------------------------------------ WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd _______________________________________________ Opensg-users mailing list Opensg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/opensg-users
