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layout: stdlib-reference
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# attribute [vk::image\_format]

## Description

Specify the storage format of a read-write texture. Can only be used on a texture typed struct field or global parameter.
This is an alias of the <span class='code'>[<a href="vk_image_format.html#decl-format" class="code_param">format</a>]</span> attribute.

## Signature

<pre>
[vk::image_format(<a href="vk_image_format.html#decl-format" class="code_param">format</a> : <a href="../types/string-0/index.html" class="code_type">String</a>)]
</pre>

## Parameters

####  <a id="decl-format"></a>format  : [String](../types/string-0/index.html)
The storage format of the texture.


## See also

Please refer to <span class='code'><a href="../types/0texture-01/index.html" class="code_type">_Texture</a></span> for a complete list of allowed format strings.