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Stars Starfield Texture
Type:  Color, Filter.

This texture converts a primitive plane into a window looking out on
a starfield.
This window interacts completely with the camera (position/angle/FOV).
If you move the window around, it will seem like the window is moving
through the starfield.
-Imagine- a spaceship with this texture applied to all of its windows,
when the spaceship flies around, the stars will be moving accordingly.
The depthcue alters color/filter change according to distance from the
window, this way you can also make falling snow effect.

Requester:

Spacing:                        Spacing between the stars.
Density  (0..1):                Number of stars turned on (1 will make
                                a 3D matrix of stars.
Size     (0..1):                Relative size of stars (1 will make
                                neighbouring stars touch.
Depth (1,2,3..):                How many stars deep you can see.
                                (higher number is longer render.)
X/Y/Z Speed (u/f):              Speed of the stars in world coordinate
                                system (units per frame) You can use
                                it to make snow, or simulate movement.
Time (f):                       Time in frames.
Color R/G/B:                    Star color value (or -1).
Filter R/G/B:                   Star filter value (or -1).
Depth Cue (0..1):               Fade distant stars into object
                                color/filter (low or 0 for snow
                                effect).
                                Note that the depthcue has as many
                                levels as the depth setting above,
                                this is for speed.

sample object: Primitive plane