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This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The WebGL2RenderingContext.getTransformFeedbackVarying() method of the WebGL 2 API returns information about varying variables from WebGLTransformFeedback buffers.


WebGLActiveInfo gl.getTransformFeedbackVarying(program, index);


A WebGLProgram.
A GLuint specifying the index of the varying variable whose information to retrieve.

Return value

A WebGLActiveInfo object.


activeInfo = gl.getTransformFeedbackVarying(program, 0);


Specification Status Comment
WebGL 2.0
The definition of 'getTransformFeedbackVarying' in that specification.
Editor's Draft Initial definition for WebGL.
OpenGL ES 3.0
The definition of 'glGetTransformFeedbackVarying' in that specification.
Standard Man page of the (similar) OpenGL API.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support56 No51 No43 No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support5858 No5143 No7.0

See also

Document Tags and Contributors

Contributors to this page: fscholz, teoli
Last updated by: fscholz,