pan> <span class="keyword">typename</span> texture_type::extent_type extent_type;</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;                <span class="keyword">typedef</span> interpolate_type level_type;</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;                <span class="keyword">typedef</span> tvec2&lt;interpolate_type, P&gt; normalized_type;</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span