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WebGL2RenderingContext.beginTransformFeedback

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

The WebGL2RenderingContext.beginTransformFeedback() method of the WebGL 2 API starts a transform feedback operation.

Syntax

void gl.beginTransformFeedback(primitiveMode);

Parameters

primitiveMode

A GLenum specifying the output type of the primitives that will be recorded into the buffer objects that are bound for transform feedback. Possible values:

gl.POINTS
gl.LINES
gl.TRIANGLES

Return value

None.

Examples

var transformFeedback = gl.createTransformFeedback(); 
gl.bindTransformFeedback(gl.TRANSFORM_FEEDBACK, transformFeedback);
gl.beginTransformFeedback(gl.TRIANGLES);
gl.drawArrays(gl.TRIANGLES, 0, 3);

Specifications

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

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	56	No	51	No	43	No

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	58	58	No	51	43	No	7.0