[ Thanks to Ramsai
for this link. ]
“Lights and shadows are very important techniques for producing
a great presentation. Proper scene lighting sets the mood and also
adds depth to an otherwise flat-looking scene, while shadows add
more realism, and more importantly, root the shadow-casting objects
to the ground, destroying the impression of models floating in
mid-air.“This recipe will show you how to add lights to your game scenes
and make objects cast shadows to boost your visuals.”