Web/API/WebGLRenderingContext/getRenderbufferParameter

The WebGLRenderingContext.getRenderbufferParameter() method of the WebGL API returns information about the renderbuffer.

Syntax

any gl.getRenderbufferParameter(target, pname);

Parameters

target: A Glenum specifying the target renderbuffer object. Possible values:

gl.RENDERBUFFER

Buffer data storage for single images in a renderable internal format.

pname: A Glenum specifying the information to query. Possible values:

gl.RENDERBUFFER_WIDTH

Returns a GLint indicating the width of the image of the currently bound renderbuffer.
gl.RENDERBUFFER_HEIGHT: Returns a GLint indicating the height of the image of the currently bound renderbuffer.
gl.RENDERBUFFER_INTERNAL_FORMAT: Returns a GLenum indicating the internal format of the currently bound renderbuffer. The default is gl.RGBA4. Possible return values:

gl.RGBA4

- 4 red bits, 4 green bits, 4 blue bits 4 alpha bits.
- gl.RGB565: 5 red bits, 6 green bits, 5 blue bits.
- gl.RGB5_A1: 5 red bits, 5 green bits, 5 blue bits, 1 alpha bit.
- gl.DEPTH_COMPONENT16: 16 depth bits.
- gl.STENCIL_INDEX8: 8 stencil bits.

gl.RENDERBUFFER_GREEN_SIZE

Returns a GLint that is the resolution size (in bits) for the green color.
gl.RENDERBUFFER_BLUE_SIZE: Returns a GLint that is the resolution size (in bits) for the blue color.
gl.RENDERBUFFER_RED_SIZE: Returns a GLint that is the resolution size (in bits) for the red color.
gl.RENDERBUFFER_ALPHA_SIZE: Returns a GLint that is the resolution size (in bits) for the alpha component.
gl.RENDERBUFFER_DEPTH_SIZE: Returns a GLint that is the resolution size (in bits) for the depth component.
gl.RENDERBUFFER_STENCIL_SIZE: Returns a GLint that is the resolution size (in bits) for the stencil component.
When using a WebGL 2 context, the following value is available additionally:

gl.RENDERBUFFER_SAMPLES

- Returns a GLint indicating the number of samples of the image of the currently bound renderbuffer.

Return value

Depends on the requested information (as specified with pname). Either a GLint or a GLenum.

Examples

gl.getRenderbufferParameter(gl.RENDERBUFFER, gl.RENDERBUFFER_WIDTH);

Specifications

Specification	Status	Comment
WebGL 1.0The definition of 'getRenderbufferParameter' in that specification.	Recommendation	Initial definition for WebGL.
OpenGL ES 2.0The definition of 'glGetRenderbufferParameteriv' in that specification.	Standard	Man page of the (similar) OpenGL API.
WebGL 2.0The definition of 'getRenderbufferParameter' in that specification.	Editor's Draft	Updated definition for WebGL 2.
OpenGL ES 3.0The definition of 'glGetRenderbufferParameteriv' in that specification.	Standard	Man page of the (similar) OpenGL ES 3 API. Adds a new `pname` value: `gl.RENDERBUFFER_SAMPLES`

Browser compatibility

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`getRenderbufferParameter`	Chrome Full support 9	Edge Full support 12	Firefox Full support 4	IE Full support 11	Opera Full support 12	Safari Full support 5.1	WebView Android Full support Yes	Chrome Android Full support 25	Firefox Android Full support Yes	Opera Android Full support 12	Safari iOS Full support 8	Samsung Internet Android Full support 1.5
`WebGL2`	Chrome Full support 56	Edge Full support 79	Firefox Full support 51	IE No support No	Opera Full support 43	Safari No support No	WebView Android Full support 58	Chrome Android Full support 58	Firefox Android Full support 51	Opera Android Full support 43	Safari iOS No support No	Samsung Internet Android Full support 7.0

Legend

Full support: Full support
No support: No support