W3cubDocs

/DOM

WebGL2RenderingContext.transformFeedbackVaryings

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

The WebGL2RenderingContext.transformFeedbackVaryings() method of the WebGL 2 API specifies values to record in WebGLTransformFeedback buffers.

Syntax

void gl.transformFeedbackVaryings(program, varyings, bufferMode);

Parameters

program: A WebGLProgram.
varyings: An Array of DOMString specifying the the names of the varying variables to use.
bufferMode: A GLenum specifying the mode to use when capturing the varying variables. Either gl.INTERLEAVED_ATTRIBS or gl.SEPARATE_ATTRIBS.

Return value

None.

Examples

var transformFeedback = gl.createTransformFeedback();
gl.bindTransformFeedback(gl.TRANSFORM_FEEDBACK, transformFeedback);
var transformFeedbackOutputs = ['gl_Position', 'anotherOutput'];

gl.transformFeedbackVaryings(shaderProg, transformFeedbackOutputs,
                             gl.INTERLEAVED_ATTRIBS);
gl.linkProgram(shaderProg);

Specifications

Specification	Status	Comment
WebGL 2.0 The definition of 'transformFeedbackVaryings' in that specification.	Editor's Draft	Initial definition for WebGL.
OpenGL ES 3.0 The definition of 'glTransformFeedbackVaryings' 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