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