The WebGLActiveInfo interface is part of the WebGL API and represents the information returned by calling the WebGLRenderingContext.getActiveAttrib() and WebGLRenderingContext.getActiveUniform() methods.


The read-only name of the requested variable.
The read-only size of the requested variable.
The read-only type of the requested variable.


A WebGLActiveInfo object is returned by:

WebGLActiveInfo? getActiveAttrib(WebGLProgram? program, GLuint index); 
WebGLActiveInfo? getActiveUniform(WebGLProgram? program, GLuint index);
WebGLActiveInfo? getTransformFeedbackVarying(WebGLProgram? program, GLuint index)


Specification Status Comment
WebGL 1.0
The definition of 'WebGLActiveInfo' in that specification.
Recommendation Initial definition.

Browser compatibility

Feature Chrome Edge Firefox Internet Explorer Opera Safari
Basic support 9 12 4 11 12 5.1
Available in workers No No 441 No No No
name 9 12 4 11 12 5.1
size 9 12 4 11 12 5.1
type 9 12 4 11 12 5.1
Feature Android webview Chrome for Android Edge mobile Firefox for Android IE mobile Opera Android iOS Safari
Basic support Yes 25 Yes Yes 11 12 8.1
Available in workers No No No No No No No
name Yes 25 Yes Yes 11 12 8.1
size Yes 25 Yes Yes 11 12 8.1
type Yes 25 Yes Yes 11 12 8.1

1. From version 44: this feature is behind the gfx.offscreencanvas.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.

See also

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