Spheres specified with sssspppphhhhddddrrrraaaawwww after sssspppphhhhbbbbggggnnnnbbbbiiiittttmmmmaaaapppp and before sssspppphhhheeeennnnddddbbbbiiiittttmmmmaaaapppp
are drawn with bitmapped spheres. The bitmap contains an image of a
phong-shaded sphere. The diffuse color of the sphere may be specified by
sssspppphhhhccccoooolllloooorrrr.
Between sssspppphhhhbbbbggggnnnnbbbbiiiittttmmmmaaaapppp and sssspppphhhheeeennnnddddbbbbiiiittttmmmmaaaapppp, only calls to sssspppphhhhccccoooolllloooorrrr and sssspppphhhhddddrrrraaaawwww
are permitted and including any GL calls or other Sphere Library calls
will produce undefined results.
NNNNOOOOTTTTEEEE
Bitmapped spheres are currently only implemented on the RealityEngine,
and with several restrictions.
The framebuffer must be configured for RGBmode with the standard buffer,
ie. the zbuffer must not be deallocated with zzzzbbbbssssiiiizzzzeeee.... Multisample buffers
must not be allocated. The projection matrix for bitmapped spheres must
be orthographic and use of perspective, such as calls to ppppeeeerrrrssssppppeeeeccccttttiiiivvvveeee or
wwwwiiiinnnnddddoooowwww will produce undefined results.
The following operations are not obeyed when drawing bitmap spheres: