Benchmark: OffscreenCanvas measureText

Script Preparation code:

var canvas = document.createElement('canvas');
var context = canvas.getContext('2d');

var offscreenCanvas = document.createElement('canvas');
var offscreenContext = offscreenCanvas.getContext('2d');

Tests:

Canvas
context.measureText('m');
OffscreenCanvas
offscreenContext.measureText('m');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Canvas
OffscreenCanvas

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 28 days ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark JSON and explain what's being tested, compared, and the pros/cons of each approach.

**Benchmark Overview**

The benchmark is designed to compare the performance of `measureText` method on `Canvas` and `OffscreenCanvas`. The test measures how many times the `measureText` method can be executed per second in each browser.

**Options Compared**

Two options are being compared:

1. **Canvas**: This is a standard HTML5 canvas element that draws graphics directly onto the screen.
2. **OffscreenCanvas**: This is an HTML5 canvas element created outside of the document flow, allowing for faster rendering and reduced memory usage.

**Pros/Cons of each approach:**

* **Canvas**:
	+ Pros:
		- Familiarity with Canvas API
		- Can be used for real-time graphics rendering
	+ Cons:
		- Can cause performance issues if not optimized correctly
		- Memory-intensive due to need to store rendered frames
* **OffscreenCanvas**:
	+ Pros:
		- Reduces memory usage and can improve performance
		- Allows for faster rendering by bypassing the DOM
	+ Cons:
		- Requires more setup and context management
		- Less familiar API, may require additional learning

**Library/Script Used**

The benchmark uses the `2d` drawing context of HTML5 Canvas. This is a standard JavaScript library that provides basic drawing and graphics capabilities.

**Special JS Feature/Syntax**

There are no special JavaScript features or syntax being tested in this benchmark. The focus is on comparing the performance of two different canvas rendering approaches.

**Other Alternatives**

If you're looking for alternatives to Canvas, some popular options include:

* **SVG**: Scalable Vector Graphics can be used for graphics rendering and may offer better performance than Canvas.
* **WebGL**: Web OpenGL is a more powerful graphics API that allows for more complex rendering, but requires more expertise and hardware support.
* **V8 Canvas alternative libraries**: There are some third-party libraries like `svg.js` or `gl-matrix` that can be used as an alternative to Canvas.

In summary, this benchmark compares the performance of `measureText` method on Canvas and OffscreenCanvas, highlighting the pros and cons of each approach.

Latest run results:

Run details: (Test run date: 7 days ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Browser/OS: Chrome 130 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Canvas	1904803.8 Ops/sec
OffscreenCanvas	1941038.9 Ops/sec

Related benchmarks:

OffscreenCanvas measureText (version: 0)

DomCanvas vs OffscreenCanvas

Comparing performance of: Canvas vs OffscreenCanvas

Created: 3 years ago by: Guest

Jump to the latest result

Canvas

OffscreenCanvas

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 28 days ago):