How can I do that?

You should really get use to using the 'Search' feature with these forums. Steempipe has recently released his source of his Water Shader you can find here:
http://www.conitecserver.com/ubbthreads/showflat.php?Cat=&Board=SHADER&Number=446910&page=0&view=collapsed&sb=5&o=&fpart=1
And I am sure there have been at least one or two other releases in the past, but you shouldn't post without looking.

Hope that helps though.

Thanks, but this is not a Realtime water reflection shader.

To do realtime reflections, you must render the scence to a texture using a clipping plane at the surface of the water, this must be done in a DLL i think.
Then you map the result projectively on the water.

Why in a dll?

Could please, post the code?

The code is unpacked in the demo: water_shader.zip.
I will post the code with a "how to implement" text soon. But at the moment I have no time.

Quote:

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I will post the code with a "how to implement" text soon.

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Thank you. I will wait eagerly!

You'll have to use Render To Texture only available in the pro demo to get realtime reflection in the water in your open source demo. Right Oliver?

Or have you got an dll like the zeraphine x3 engine plugin to do this?