Web/API/XRWebGLLayer/framebufferWidth

Secure contextThis feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The read-only XRWebGLLayer property framebufferWidth specifies the width of the framebuffer, in pixels.

You can get the height of the framebuffer using the framebufferHeight property.

Syntax

let bufferWidth = xrWebGLLayer.framebufferWidth;

Value

The width in pixels of the XR device's framebuffer. Each of the framebuffer's attachments (pixel, depth, color, and/or stencil buffers, for example) are all this many pixels wide.

Examples

This snippet simply fetches the framebuffer's width and height for later use.

let glLayer = xrSession.renderState.baseLayer;
gl.bindFramebuffer(gl.FRAMEBUFFER, glLayer.framebuffer);

frameWidth = glLayer.framebufferWidth;
frameHeight = glLayer.framebufferHeight;

Specifications

Specification	Status	Comment
WebXR Device APIThe definition of 'XRWebGLLayer.framebufferWidth' in that specification.	Working Draft	Initial definition.

Browser compatibility

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
`framebufferWidth`	Chrome Full support 79	Edge Full support 79	Firefox No support No	IE No support No	Opera No support No	Safari No support No	WebView Android No support No	Chrome Android Full support 79	Firefox Android No support No	Opera Android No support No	Safari iOS No support No	Samsung Internet Android Full support 11.2

Legend

Full support: Full support
No support: No support