---
layout: stdlib-reference
---

# attribute [outputtopology]

## Description

Used on an hull shader entrypoint to declare the output primitive type of the tessellator.

## Signature

<pre>
[<a href="outputtopology.html">outputtopology</a>(<a href="outputtopology.html#decl-topology" class="code_param">topology</a>)]
</pre>

## Parameters

####  <a id="decl-topology"></a>topology
The output primitive type, must be one of "point", "line", "triangle_cw", and "triangle_ccw".