setAttributes() invalidates references to earlier canvases

Most appropriate sub-area of p5.js?

• Accessibility
• Color
• Core/Environment/Rendering
• Data
• DOM
• Events
• Image
• IO
• Math
• Typography
• Utilities
• WebGL
• Build Process
• Unit Testing
• Internalization
• Friendly Errors
• Other (specify if possible)

p5.js version

1.5.0

Web browser and version

107.0.1

Operating System

macOS 12.5.1

Steps to reproduce this

Calling setAttributes in WebGL mode might end up recreating the underlying canvas and renderer object.

Say you're trying to position the element, e.g. like this:

let canvas = createCanvas(100, 100, sketch.WEBGL);
// ...
canvas.position(0,0);

Unfortunately, this stops working after a setAttributes call, because after that call, canvas !== _renderer. Currently, to fix it, one would have to do:

createCanvas(100, 100, sketch.WEBGL);
setAttributes({ alpha: true });
let canvas = _renderer;
// ...
canvas.position(0,0);

Start by tracing setAttributes in WebGL mode from createCanvas and the renderer recreation described in the report. Verify how the original canvas reference becomes disconnected, then confirm that positioning the canvas after setAttributes still works without reacquiring _renderer.