WebGL2RenderingContext: beginTransformFeedback() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2021.

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

Syntax

js
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 (undefined).

Examples

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

Specifications

Specification
WebGL 2.0 Specification
# 3.7.15

Browser compatibility

BCD tables only load in the browser

See also