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
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
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