# fsRenderViewport<no value>
The **fsRenderViewport** function specifies the viewport to be used when drawing the gauge.

 

##### Syntax

``` wasm
void fsRenderViewport(
    FsContext ctx,
    float width,
    float height,
    float devicePixelRatio
    )
```

 

##### Members

<table><thead><tr class="header"><th>Parameters</th><th>Description</th></tr></thead><tbody><tr class="odd"><td><code>ctx</code></td><td>A value of type <code>FsContext</code> provided as an argument of the gauge callback.</td></tr><tr class="even"><td><code>width</code></td><td>The width of the viewport.</td></tr><tr class="odd"><td><code>height</code></td><td>The height of the viewport.</td></tr><tr class="even"><td><code>devicePixelRatio</code></td><td><p>The device pixel ratio.</p><p><strong>NOTE</strong>: This is not currently implemented.</p></td></tr></tbody></table>

 

##### Return Values

This function does not return a value.

 

##### Remarks

N/A