pixelscommander / isantialiasingsupportedforwebgl

gl.antialias=true does not guarantee it is actually going to be ON because browser accepts antialias attribute just as a hint and decides on itself there. This library checks for actual AA availability.

Is Antialiasing Supported? For WebGL

You probably heard about WebGL context antialias property. The interesting fact is that having true as a value there does not guarantee antialiasing to be actually enabled. It works just as a hint for browser but there are many reasons it might be disabled and you d like to react on this. For example by enabling shader-based FSAA.

With this library you can actually check if AA works for this machine. Once executed it adds window.antialiasingSupported: boolean property which is true if AA is available.

Demo

Usage

npm install isantialiasingsupported

include into your project and after you may check for

if (window.antialiasingSupported) ...

How this works?

Library creates tiny detached canvas and draws triangle on it with WebGL.

If triangle have any pixels except white and black then it is antialiased and window.antialiasingSupported is set to true.

License

MIT: http://mit-license.org/

Copyright 2018 Denis Radin aka PixelsCommander

Credits

Inspired by my work at Evolution Gaming