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WebGLRenderingContext.drawingBufferWidth

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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

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 9 9.0 (9.0) 11 12 5.1
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) 25 9.0 (9.0) (Yes) 12 8.1

See also

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