I created 3D cube images with Povray - spherical images assembled from 6 images,
each of the images corresponding to one face of a cube. Without using radiosity
there are no problems. However, if radiosity is turned on, the six images do not
fit exactly, there are differences in brightness of the faces. The code is the
exactly the same for all faces, only the camera is rotated by 90 degs. Seems
that the result of rendering with radiosity turned on depends on the camera
direction.

To better understand, have a look at www.gunda.hu/cube/povray

Another perfect example, without using radiosity, is at www.gunda.hu/cube

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