I have been using Pov-ray to generate textures for my Direct3D game and thought
it would be perfect for creating the 6 textures to be mapped to the skybox in
my game. Using a sky_sphere, I have the camera with a FOV of 90 degrees and
rotated the camera as needed and can line up all by the top and bottom textures
to the front texture.

This is how each texture generated by Pov-Ray with the camera rotated are lined
up:

      top
        |
left-front-right-back
        |
     bottom

The left texture lines up perfectly with the front, the front with the right and
the right with the back. But the top and bottom do not line up with the front
texture of the sky sphere.

These are the camera rotation angles I have used:

front=(0,180,0)
left=(0,-90,0)
back=(0,0,0)
right=(0,90,0)
up=(-90,90,0)
down=(90,90,0)

The camera setup I have is this:

camera {
    location <0,0,0>
    direction 0.5*z right x up 0.75*y
    look_at <0,0,1>
    rotate <0,0,0>}

Which is meant to give a FOV of 90 degrees.

Please help.

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