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WebGL2RenderingContext.beginTransformFeedback

This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

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 compatibility

Feature Chrome Edge Firefox Internet Explorer Opera Safari Servo
Basic Support 56 No support 51.0 No support 43 No support No support
Feature Android Chrome for Android Edge Mobile Firefox for Android IE Mobile Opera Mobile Safari Mobile
Basic Support No support No support No support No support No support No support No support

See also

Edit this page on MDN

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/beginTransformFeedback