WebGLRenderingContext: bindBuffer() method
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
Note: This feature is available in Web Workers.
The WebGLRenderingContext.bindBuffer() method of the WebGL API binds a given WebGLBuffer to a target.
Syntax
bindBuffer(target, buffer) Parameters
target-
A
GLenumspecifying 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
WebGLBufferto 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 |