Headless mode crashes if antialiasing is disabled.

[moufmouf]

Version

• Phaser Version: 3.60.0
• Operating system: any
• Browser: any

Description

Using Phaser in headless mode + disabling antialiasing causes Phaser to crash.

Example Test Code

const config = {
    type: Phaser.HEADLESS,
    parent: 'phaser-example',
    width: 800,
    height: 600,
    render: {
      pixelArt: true,
      antialias: false,
    },
    scene: [ ]
};
const game = new Phaser.Game(config);

JSFiddle: https://jsfiddle.net/6so8qry9/

Additional Information

The issue comes from the fact we try to detect if webgl is enabled in the renderer. But the renderer is null.

                setFilter: function(t) {
                    this.renderer.gl && this.renderer.setTextureFilter(this.glTexture, t),
                    this.scaleMode = t
                },

I'm not a Phaser expert, but I think the root issue is that the renderer is "null" when Headless mode is used.
It is very easy to assume in Phaser code (or in user-land code) that there will always be a renderer (the Typescript types say that the renderer is not nullable). Instead of setting the renderer to null, could it be possible to actually code a "HeadlessRenderer" object that features all the methods of a classic renderer, but that does nothing?
This approach of a "void object" is fairly common in object oriented programming. What do you think?

[photonstorm]

Thank you for submitting this issue. We have fixed this and the fix has been pushed to the master branch. It will be part of the next release. If you get time to build and test it for yourself we would appreciate that.