Error when using saveGif() in instance mode and WEBGL mode

[ChimiSeanGa]

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

1.9.0

Web browser and version

Safari 17.1

Operating System

macOS Sonoma 14.1.1

Steps to reproduce this

Steps:

1. Run a sketch in instance mode and in WEBGL mode
2. Add a saveGif() command anywhere
3. Upon calling saveGif(), an error will be thrown saying ReferenceError: Can't find variable: height

Snippet:

let sketch = function(p) {
  p.setup = function() {
    p.createCanvas(500, 500, p.WEBGL);
  };

  p.draw = function() {
  };
  
  p.keyPressed = function() {
    if (p.key === 's') {
      p.saveGif('test', 5);
    }
  }
};

let myp5 = new p5(sketch);

You can run this in the web editor as well. If you remove the p.WEBGL parameter, saveGif() works just fine.

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[mohitbalwani]

Thanks for reporting the issue @ChimiSeanGa! I spent some time on this issue and found that we were not passing the width and height to the function. I made those changes and created PR #6726 which should resolve this issue.