{{newinoldin|[[0.9.2]]|092|[[11.0]]|110|type=function|text=It has been replaced by [[Shader:hasUniform]]}}
Gets information about an 'extern' ('uniform') variable in the shader.

Returns nil if the variable name doesn't exist in the shader, or if the video driver's shader compiler has determined that the variable doesn't affect the final output of the shader.

== Function ==
=== Synopsis ===
<source lang="lua">
type, components, arrayelements = Shader:getExternVariable( name )
</source>
=== Arguments ===
{{param|string|name|The name of the extern variable.}}
=== Returns ===
{{param|ShaderVariableType|type (nil)|The base type of the variable.}}
{{param|number|components (nil)|The number of components in the variable (e.g. 2 for a vec2 or mat2.)}}
{{param|number|arrayelements (nil)|The number of elements in the array if the variable is an array, or 1 if not.}}
== See Also ==
* [[parent::Shader]]
* [[Shader:send]]
[[Category:Functions]]
{{#set:Description=Gets information about an 'extern' ('uniform') variable in the Shader.}}
== Other Languages ==
{{i18n|Shader:getExternVariable}}