I’ve just made a few tests with gl_depth_clamp_nv extension from nvidia.
I shift my near and far clipping planes using or not this extension.
As expected, objects before the near clip plane are drawn in the frame buffer and clamped int the zbuffer.
But objects behind the far clip plane are clipped in the zbuffer but not all drawn in the framebuffer.A square and a sphere remain cut in the framebuffer !
Do you have any idea ?
Have you already seen that ?!!