w blurred array instead of modifying in-place.</p>
<ul class="simple">
<li><p><strong>`blur4bloom_c(surface_, npass, tmp_array)`</strong>:</p></li>
</ul>
<p>Likely used for bloom effects, enhancing bright areas.</p>
<p>Several internal <strong>Cython-optimized</strong> versions (<cite>blur3d_c</cite>, <cite>blur1d_c</cite>, etc.) run without the <strong>Global Interpreter Lock (GIL)</strong> for multi-threading support.</p>
<p><strong>Gaussian Filtering</strong></p>
<ul class="simple">
<li><p><stron