Combining Cubic Environment Mapping & Dot 3?

I'd like to use cubic mapping for the water in my game but without adding geometry (which I don't want to do) it looks like a flat mirror. Is there any way I can use a Dot 3 normal map to provide the necessary noise.

I had a quick go but it doesn't seem to work.

Or am I barking up the wrong tree?

For the ocean I use a second plane with dot 3 normal map applied to it (and combined with the mesh with the cube map).
I think it is not possible to combine both in the same plane mesh.

How does that look? I can't see how a second plane can possibly affect the normals used by the cube-mapping.

No,you have to apply the dot3 to the second plane-mesh and the effect is good enough for me:
the cube mapped mesh is transparent and you can see the second plane-mesh(you can use either)with the dot3 normal map texture( like the noise of waves) through it.
I don´t know if it is what you meant, sorry , and also excuse my poor english.

Couldn't you just use multitexturing for this?

EntityTexture Mesh,cubemap_texture,0,0
EntityTexture Mesh,normalmap_texture,0,1

Yes. That's what I tried but it didn't really work. I want the normal map to affect the normals used by the cubic map. But that doesn't happen, the bump map is simply applied to the underlying image.

WHat you'll probably need to do, i saw this around these forums. It's a special cubemap, specifically shaded. So, then when blended with a normalmap, it produces the correct normals for the lighting on the DOT3 map. It was a test on an MD2 model... i'll try and see if i can find it :o)

You cannot use a dot3 map to distort the cubemap reflection, if that is what you wanted...You may be able to do it by fiddling with some DirectX stuff in a dll, Tom Speed has made a few modifications like that.

I think he wants the normal map to be distorted by a blended cubemap. And that to sit on top of the water cubemap... i think :S

That would be a nice thing to be able to do, for sure :)