Canvas Texture Composite Op

var config = {
    type: Phaser.CANVAS,
    parent: 'phaser-example',
    width: 800,
    height: 600,
    backgroundColor: '#2d2d88',
    scene: {
        preload: preload,
        create: create
    }
};

var game = new Phaser.Game(config);

function preload ()
{
        this.load.setBaseURL('https://cdn.phaserfiles.com/v355');
    this.load.image('brush', 'assets/particles/sparkle1.png');
    this.load.image('grass', 'assets/textures/grass.png');
    this.load.image('bg', 'assets/pics/turkey-1985086.jpg');
}

function create ()
{
    this.add.image(0, 0, 'bg').setOrigin(0);

    var texture = this.textures.createCanvas('canvastexture', 800, 600);

    var grass = this.textures.get('grass').getSourceImage();
    var brush = this.textures.get('brush').getSourceImage();

    texture.draw(0, 0, grass);
    texture.draw(512, 0, grass);
    texture.draw(0, 512, grass);
    texture.draw(512, 512, grass);

    //  Set the global composite op:
    texture.context.globalCompositeOperation = 'destination-out';

    //  Now anything drawn to the canvas will use this op
    texture.draw(0, 0, brush);
    texture.draw(150, 90, brush);
    texture.draw(300, 140, brush);

    //  Finally, display the Canvas Texture by adding it to an Image
    this.add.image(0, 0, 'canvastexture').setOrigin(0);
}
                        

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