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WebGLRenderingContext: bindBuffer() method

The WebGLRenderingContext.bindBuffer() method of the WebGL API binds a given WebGLBuffer to a target.

Syntax

bindBuffer(target, buffer)

Parameters

target

A GLenum specifying the binding point (target). Possible values:

gl.ARRAY_BUFFER: Buffer containing vertex attributes, such as vertex coordinates, texture coordinate data, or vertex color data.
gl.ELEMENT_ARRAY_BUFFER: Buffer used for element indices.

When using a WebGL 2 context, the following values are available additionally:

gl.COPY_READ_BUFFER: Buffer for copying from one buffer object to another.
gl.COPY_WRITE_BUFFER: Buffer for copying from one buffer object to another.
gl.TRANSFORM_FEEDBACK_BUFFER: Buffer for transform feedback operations.
gl.UNIFORM_BUFFER: Buffer used for storing uniform blocks.
gl.PIXEL_PACK_BUFFER: Buffer used for pixel transfer operations.
gl.PIXEL_UNPACK_BUFFER: Buffer used for pixel transfer operations.

buffer

A WebGLBuffer to bind.

Return value

None (undefined).

Exceptions

Only one target can be bound to a given WebGLBuffer. An attempt to bind the buffer to another target will throw an INVALID_OPERATION error and the current buffer binding will remain the same.

A WebGLBuffer which has been marked for deletion with deleteBuffer cannot be (re-)bound. An attempt to do so will generate an INVALID_OPERATION error, and the current binding will remain untouched.

Examples

Binding a buffer to a target

const canvas = document.getElementById("canvas");
const gl = canvas.getContext("webgl");
const buffer = gl.createBuffer();

gl.bindBuffer(gl.ARRAY_BUFFER, buffer);

Getting current bindings

To check the current buffer bindings, query the ARRAY_BUFFER_BINDING and ELEMENT_ARRAY_BUFFER_BINDING constants.

gl.getParameter(gl.ARRAY_BUFFER_BINDING);
gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING);

Specifications

Specification
WebGL Specification # 5.14.5
WebGL 2.0 Specification # 3.7.1

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`bindBuffer`	9	12	4	11	12	5.1	4.4.3	25	4	12	8	1.5