[Direct3D] Never ending ripples in water

Tested with 0.31RC2

When going into and out of water, the ripples never dissipates until you get out of "sight range" of the ripples.

The only setting in options that has any effect is reflection on/off, the other ones doesn't matter.

http://i.imgur.com/LnSikkw.jpg

(RM-1649 from redmine: created on 2014-07-13 by Lars Söderberg, , closed on 2015-02-09 by scrawl ., duplicates #1383 (closed), duplicates #1988 (closed))

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