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vec3 flakeNoiseBumpTexture( in texture_coordinate_info uvw, in float scale, in float strength, in vec3 normal )
{
vec3 tex = uvw.position / scale;
vec3 grad = miNoise( tex ).xyz;
// displace coordinate according to noise value
tex += 2.0f * grad;
// then use only integer coordinates, to make flakes transients harder and not wobbly
grad = miNoise( round( tex ) ).xyz;
vec3 n = normalize(vec3(strength * grad.x, strength * grad.y, 1.0));
n = n.x*uvw.tangent_u + n.y*uvw.tangent_v + n.z*normal;
return normalize(normal + n);
}
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