I've got a little problem with the reflection and refraction textures that I'm using for my water. I use a clipping plane to avoid rendering stuff above the water line for reflection, but I also perturb the texture coordinates of my reflection map to simulate a rippling surface. This means that at the edges, the texture coordinates spill over and I get black showing up:
Is there an easy way to fix this? I can do it by moving the clip plane down slightly, but this causes things below the water line to be reflected.