WebGLRenderingContext: drawingBufferWidth property

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 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.

Value

A number.

Examples

Given this <canvas> element:

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

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

js
const canvas = document.getElementById("canvas");
const gl = canvas.getContext("webgl");
gl.drawingBufferWidth; // 300

Specifications

Specification
WebGL Specification
# DOM-WebGLRenderingContext-drawingBufferWidth

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
drawingBufferWidth

Legend

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Full support
Full support

See also