…Don’t stop reading, but it’s for Visual Basic:) They Also have it for Delphi and .net I believe, although no C++ variants.
Here’s a quote from cfxweb.net:
TrueVision3D Engines Community has updated their whole website and released their 3d engine version 4.0 with amazing effects like “Reflective Cube Environment mapped Bezier path”, this results of this VB 3d engine is even so good that it’s better then a lot C++ engines, and of course with same fps or even better. The developing time of a game with a VB engine is even shorter, because the code is easier to learn and faster to write.
…You can visit TrueVision3D at: http://www.TrueVision3DSDK.com.
Note: Their mirror is down, but you can download it in 5 pieces if you scroll down to the bottom of their news section on the main page.