sky rendering

[alex25]

i would like to have the horizon drawn at its actual size but centered on the current viewpoint, so as you drive around the track the horizon sort of encircles the car and follows it around

That is exactly how it currently works. There is no "skydome projection." All skyboxes work the way you described above.

i don't think so and i'll try to explain with a series of pictures from mosport. in this picture:

neither the sky nor the horizon were marked as skyboxes. i hope you can see the horizon is drawn in front of the sky and it's clearly visible.
in the second picture

both the sky and the horizon are marked as skybox objects. the horizon doesn't show up. the only explanation is that both the horizon and the sky are drawn at some arbitrary distance. in the third picture

i made the horizon a transparent blended texture and it shows up again. clearly when you mark objects as skyboxes they are not drawn the same size as when they are not, otherwise the horizon would've showed up without having to make it a transparent blended texture.

hope this helps.

--alex--