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uniform float amplitude;
attribute float displacement;
varying vec3 vNormal;
void main() {
vNormal = normal;
// multiply our displacement by the
// amplitude. The amp will get animated
// so we'll have animated displacement
vec3 newPosition = position +
normal *
vec3(displacement *
amplitude);
gl_Position = projectionMatrix *
modelViewMatrix *
vec4(newPosition,1.0);
}