[osg-users] Migration from OSG 3.1.5 to 3.4.0 / Qt 4 to Qt 5

[Andrew Cunningham]

Hi,
Although I now have rendering of my objects happening in my Qt5/OSG 3.4.0 widget I am having a issue with simple polygonal objects rendering "on top of each other" as if there is no depth (Z) buffer in operation. I am using fairly vanilla OSG code to set up the model and camera that worked as expected in a MFC/OSG 3.0.1 world.

I am completely at a loss as to why a Z-buffer is not operating. GL_BLEND is definitively OFF.

Any ideas?
Thanks!

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