Eners nice post made me want to try the shadows effect in the new Imprudence viewer. Somehow it sounded rather like a gimmick to me, but when I saw it in action it was actually kind of jaw-dropping. In the picture above, the shadow of the flags actually moves in sync with how the flag flows in the wind!
It works dynamically when you build too; the shadow changes when you twist prims around.
In this pic, even my avatar has a shadow, and that too follows the movements of the limbs, and behave correctly when you fly. (It does disappear after a minute or two, but hey, this is experimental software, remember? :-)
Best thing is; it seems this requires very little GPU overhead. But it's adding a whole new level of realism to scenes; I'm really looking forward to a stable version of this feature!
Talking about shadows; today (June 30th) is opening day of Eclipse - the third Twilight novel. Yeah, I know, it's all teenager love and romantism, I should be too old for that kind of stuff, but I have to admit that I loved the books, and the first 2 movies have been a thrill.
So, what we all want now, is not just any shadow, but an actual eclipse. That will not happen until the rather over-simpliefied pattern of the moon allways rising when the sun sets is made more realistic. Will this be another first of OpenSim?