span><span>)

        -</span><span class="number-literal">1.0f</span><span> + </span><span class="number-literal">2.0f</span><span> *
          </span><span class="identifier">mix</span><span>(
            </span><span class="identifier">mix</span><span>(</span><span class="identifier">hash</span><span>(</span><span class="identifier">i</span><span> + </span><span class="identifier">vec2</span><span>(</span><span class="number-literal">0.0f</span><span>, </span><span class="number-literal">0.0f</span><span