---
layout: stdlib-reference
---

# WaveIsFirstLane

## Description





## Signature 

<pre>
<span class="code_keyword">bool</span> <a href="waveisfirstlane-046b.html">WaveIsFirstLane</a>();

</pre>

## Availability and Requirements

Defined for the following targets:

#### hlsl
Available in all stages.

#### glsl
Available in all stages.

#### cuda
Available in all stages.

#### metal
Available in all stages.

#### wgsl
Available in all stages.

#### spirv
Available in all stages.

Requires capability: `spvGroupNonUniform`.