Benchmark: canvas alpha channel2

HTML Preparation code:

<canvas id="canvas1" width="400" height="400"></canvas>
<canvas id="canvas2" width="400" height="400"></canvas>

Script Preparation code:

var canvas1 = document.getElementById('canvas1');
var ctx1 = canvas1.getContext("2d", {alpha: false});

var canvas2 = document.getElementById('canvas2');
var ctx2 = canvas2.getContext("2d");

Tests:

false
ctx1.fillStyle = "rgba(255, 255, 255, 0.3)"; ctx1.fillRect(0, 0, 400, 400); ctx1.beginPath(); ctx1.fillStyle = '#000'; ctx1.arc(100, 100, 6, 0, Math.PI * 2, true); ctx1.fill();
true
ctx2.fillStyle = "rgba(255, 255, 255, 0.3)"; ctx2.fillRect(0, 0, 400, 400); ctx2.beginPath(); ctx2.fillStyle = '#000'; ctx2.arc(100, 100, 6, 0, Math.PI * 2, true); ctx2.fill();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
false
true

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

Let's break down the provided JSON data for MeasureThat.net, which is used to create and run JavaScript microbenchmarks.

**Benchmark Definition:**

The benchmark definition consists of two main parts:

1. **Script Preparation Code:** This code sets up the test environment by retrieving two `<canvas>` elements and creating their respective 2D contexts (`ctx1` and `ctx2`). The `alpha` property is set to `false` for `ctx1`, indicating that it will not support alpha channel operations (transparency).
2. **Html Preparation Code:** This code generates the basic HTML structure with two `<canvas>` elements, each with a width and height of 400 pixels.

**Individual Test Cases:**

The benchmark definition includes two individual test cases:

1. The first test case (`"false"` in `Test Name`) uses `ctx1` (with alpha channel disabled) to fill a rectangle with an opaque white color and draw a black circle using the `arc` method.
2. The second test case (`"true"` in `Test Name`) uses `ctx2` (with alpha channel enabled) to perform the same operations as the first test case.

**Comparison of Options:**

The benchmark compares two approaches:

1. **alphaChannel:** Disabled for `ctx1`, which means it won't support transparent pixels or alpha blending.
	* Pros:
		+ Simplifies the rendering process, reducing overhead and improving performance.
	* Cons:
		+ May result in less accurate results, as some operations might not be optimized for this case.
2. **alphaChannel:** Enabled for `ctx2`, which means it will support transparent pixels and alpha blending.
	* Pros:
		+ Provides a more realistic representation of real-world rendering scenarios, where transparency is often required.
	* Cons:
		+ May introduce additional overhead due to the complexity of handling alpha channels.

**Library Usage:**

The benchmark does not explicitly mention any libraries. However, it's likely that the HTML and JavaScript code are part of the browser's standard library, with no external dependencies.

**Special JS Features or Syntax:**

None mentioned in the provided data.

**Other Considerations:**

* The benchmark assumes a desktop platform (Linux) running Chrome 101.
* The results are based on raw UA strings, which provide some information about the browser and device used for execution.

**Alternatives:**

If you'd like to create similar benchmarks or modify this one, consider exploring other options:

1. **Use different browsers:** Measure performance differences between various browsers (e.g., Chrome, Firefox, Safari) using the same benchmark.
2. **Modify test cases:** Alter the test cases to focus on specific rendering features, such as text rendering or 3D graphics.
3. **Increase complexity:** Introduce additional elements or more complex graphics to simulate real-world scenarios and measure performance under increased load.
4. **Compare other benchmarks:** Create new benchmarks using different approaches (e.g., webGL, WebGL2) or test specific features like GPU acceleration, CPU optimization, or memory management.

Keep in mind that the effectiveness of these alternatives depends on your specific goals and requirements.

Related benchmarks:

canvas alpha channel2 (version: 0)

Comparing performance of: false vs true

Created: 4 years ago by: Guest

Jump to the latest result

false

true

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):