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layout: stdlib-reference
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# attribute [maxtessfactor]

## Description

Used on an hull shader entrypoint to declare the upperbound of the tessellation factor that the hull shader can return.

## Signature

<pre>
[<a href="maxtessfactor.html">maxtessfactor</a>(<a href="maxtessfactor.html#decl-factor" class="code_param">factor</a> : <span class="code_keyword">float</span>)]
</pre>

## Parameters

####  <a id="decl-factor"></a>factor  : float
The maximum tessellation factor the hull shader can return.