A second method would be to Render the Shadow to the backbuffer and copy that rectangle to the xz location inside a huge Shadow/Floor texture. (thanks the new bit256 this is an option)
Hmmm... my floor texture is tiled. I don't suppose this would work with a 128x128 texture that is tiled to cover the whole floor?
I'm trying to go Rob's way of having a flat sprite that is underneath the character and moves with the character. However, the sprite is not being textured properly. In fact, it is not being textured at all. All I'm getting is a totally white sprite under the character.
I have the media and full source if anyone would like to have a peek at it and tell me what is wrong. Obviously, you will get full credit for the fix.