---
title: nodes-sample-ddx-table
---

<tr>
<td><strong>DDX</strong></td>
<td>Float</td>
<td>DDY</td>
<td><div class="NOTE"><h5>NOTE</h5><p>The <strong>DDX</strong> Input port only displays if <strong>Mip Sampling Mode</strong> is <strong>Gradient</strong>. For more information, see <a href="#additional-node-settings">Additional node settings</a>.</p></div> The specific DDX value to use to calculate the texture's mip when sampling. For more information on DDX values for mipmaps, see <a href="https://docs.unity3d.com/Documentation/Manual/texture-mipmaps-introduction.html">Mipmaps introduction</a> in the Unity User Manual.</td>
</tr>