RetroFont to RenderTexture problem

[jjcapellan]

Version

• Phaser Version: +3.85.00
• Operating system: Debian 11
• Browser: Chrome v128.0.6613.84

Description

Bad rendering occurs when a BitmapText obtained from a RetroFont object is drawn into a RenderTexture.
The problem only occurs when these conditions are met:

1. The font uses a configuration offset other than 0.
2. pixelart == true

Example Test Code

const FONT = "font1";

class MainScene extends Phaser.Scene {
    constructor() {
        super('mainScene');
    }

    preload() {
        // Needs offsetY = 831
        this.load.image("atlas", "imgs/invader.png");
        // Does not needs offset
        this.load.image("font7x10", "imgs/font7x10.png");
    }

    create() {
        const rt = this.add.renderTexture(0, 0, config.width, config.height)
            .setOrigin(0).setPosition(0, 0);

        this.createFont();
        const txt = this.make.bitmapText({
            font: FONT,
            text: "left  .......  a,left\n" +
                "right ....... d,right\n" +
                "shoot .......   space\n" +
                "or use gamepad"
        }, false)
            .setOrigin(0.5)
            .setTint(0xababab);

        const cx = rt.width / 2;
        const cy = rt.height / 2;
        rt.draw(txt, cx, cy);
    }

    createFont() {
        const config1 = {
            image: "atlas",
            width: 7,
            height: 10,
            chars: "0123456789abcdefghijklmnopqrstuvwxyz?!.,+-*%:= ",
            charsPerRow: 10,
            offset: { x: 0, y: 831 },
            spacing: { x: 1, y: 1 }
        };
        this.cache.bitmapFont.add(FONT, Phaser.GameObjects.RetroFont.Parse(this, config1));
    }
}

var config = {
    type: Phaser.WEBGL,
    backgroundColor: '0x121212',
    width: 320,
    height: 180,
    pixelArt: true,
    zoom: 2,
    scene: [MainScene],
    loader: {
        baseURL: "https://jjcapellan.github.io/phaser3-games/assets/",
        crossOrigin: "anonymous"
    }
};

var game = new Phaser.Game(config);

https://phaser.io/sandbox/uBEpvQ1j

Additional Information

This code works as expected in versions prior to 3.85.00