The WebGLRenderingContext.getBufferParameter()
method of the WebGL API returns information about the buffer.
WebGLRenderingContext.getBufferParameter()
Syntax
getBufferParameter(target, pname)
Parameters
- target
-
A
GLenum
specifying the target buffer object. 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.
-
-
- pname
-
A
GLenum
specifying information to query. Possible values:-
gl.BUFFER_SIZE
: Returns aGLint
indicating the size of the buffer in bytes. -
gl.BUFFER_USAGE
: Returns aGLenum
indicating the usage pattern of the buffer. This is either:-
gl.STATIC_DRAW
, -
gl.DYNAMIC_DRAW
, -
gl.STREAM_DRAW
. - When using a WebGL 2 context, the following values are available additionally:
-
gl.STATIC_READ
, gl.DYNAMIC_READ,
-
gl.STREAM_READ
, -
gl.STATIC_COPY
, gl.DYNAMIC_COPY,
-
gl.STREAM_COPY
.
-
-
-
Return value
Examples
gl.getBufferParameter(gl.ARRAY_BUFFER, gl.BUFFER_SIZE);
Specifications
Specification |
---|
WebGL Specification # 5.14.5 |
WebGL 2.0 Specification # 3.7.3 |
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 | |
getBufferParameter |
9
|
12
|
4
|
11
|
12
|
5.1
|
4.4.3
|
25
|
4
|
12
|
8
|
1.5
|
WebGL2 |
56
|
79
|
51
|
No
|
43
|
No
|
58
|
58
|
51
|
43
|
No
|
7.0
|
See also
© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/getBufferParameter