I’m developing an application for Windows that uses Qt and Open Inventor. On some PCs, complex objects or large scene graphs slow the frame rate to a frame every few seconds. These PC are mostly Core 2 Dells with NVidea graphics cards and dual monitors. OTOH, on my development PC (Core 2 Dell, ATI graphics card, dual monitors) the frame rate is acceptable with these scene graphs.
The interesting thing is that the slowdown happens with both VSG Open Inventor and Coin3D + Qt 4.5, but there is a very old legacy application that can display the same scene graphs which was built on SGI Open Inventor and FLTK; this works fine on all the PCs!
I’m not sure what I’m looking for. Do VSG OIV/Coin3D handle OpenGL differently than the legacy SGI library, or could SoQt and its libraries/DLLs be the difference?
Thanks in advance for any information!