public float getTexScale() {
        return texScale;
    }
returns the scale of the normal/dudv texture, default = 1. Note that the
waves should be scaled by the texture coordinates of the quad to avoid
animation artifacts, use mesh.scaleTextureCoordinates(Vector2f) for that.

@return the textures scale
jme3-effects/src/main/java/com/jme3/water/SimpleWaterProcessor.java