WebGLRenderingContext.drawingBufferWidth

The read-only WebGLRenderingContext.drawingBufferWidth property represents the actual width of the current drawing buffer. It should match the width attribute of the <canvas> element associated with this context, but might differ if the implementation is not able to provide the requested width.

Syntax

gl.drawingBufferWidth;

Examples

Given this <canvas> element:

<canvas id="canvas"></canvas>

You can get the width of the drawing buffer with the following lines:

var canvas = document.getElementById('canvas');
var gl = canvas.getContext('webgl');
gl.drawingBufferWidth; // 300

Specifications

Specification Status Comment
WebGL 1.0
The definition of 'WebGLRenderingContext.drawingBufferWidth' in that specification.
Recommendation Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome Full support 9Edge Full support 12Firefox Full support 4IE Full support 11Opera Full support 12Safari Full support 5.1WebView Android Full support YesChrome Android Full support 25Edge Mobile Full support YesFirefox Android Full support YesOpera Android Full support 12Safari iOS Full support 8.1Samsung Internet Android Full support Yes

Legend

Full support  
Full support

See also

Document Tags and Contributors

Contributors to this page: fscholz, nmve, teoli
Last updated by: fscholz,