---
layout: stdlib-reference
---

# IsHelperLane

## Description





## Signature 

<pre>
<span class="code_keyword">bool</span> <a href="ishelperlane-028.html">IsHelperLane</a>();

</pre>

## Availability and Requirements

Defined for the following targets:

#### hlsl
Available in `fragment` stage only.

#### glsl
Available in `fragment` stage only.

#### metal
Available in `fragment` stage only.

#### spirv
Available in `fragment` stage only.

Requires capability: `spvDemoteToHelperInvocationEXT`.