Alpha Blend and Normal improvements

As it turns out, the main reason why textures (and light) weren't looking quite right was that there weren't enough vertices and normals on the plane I was rendering onto.  Recreating the plane to be basically a flat slab of 256x256 terrain made a big improvement in lighting, alpha blending and texturing.  The alpha blending now properly shows the terrain below water and properly obscures areas of higher velocity.