Benchmark: rgb vs rgba canvas

HTML Preparation code:

<canvas id="canvasOne" width="400" height="400"></canvas>
<canvas id="canvasTwo" width="400" height="400"></canvas>

Script Preparation code:

var canvasOne = document.getElementById("canvasOne");
var ctxOne = canvasOne.getContext("2d");

var canvasTwo = document.getElementById("canvasTwo");
var ctxTwo = canvasTwo.getContext("2d");

Tests:

alpha
ctxOne.beginPath(); ctxOne.fillStyle = 'rgba(231, 76, 60, 0.1)'; ctxOne.arc(20, 20, 12, 0, Math.PI * 2, true); ctxOne.fill();
no alpha
ctxTwo.beginPath(); ctxTwo.fillStyle = 'rgb(249, 206, 201)'; ctxTwo.arc(20, 20, 12, 0, Math.PI * 2, true); ctxTwo.fill();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
alpha
no alpha

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 6 months ago)

User agent: Mozilla/5.0 (Linux; Android 11; Redmi Note 10T Build/RP1A.200720.011) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.6312.118 Mobile Safari/537.36 XiaoMi/MiuiBrowser/14.40.2-gn

Browser/OS: Chrome Mobile 123 on Android

View result in a separate tab

Test name	Executions per second
alpha	169615.2 Ops/sec
no alpha	164539.7 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down what is being tested on the provided JSON.

**What is being tested?**

The benchmark is comparing the performance of two rendering approaches in 2D graphics using HTML5 Canvas:

1. **RGBA (Alpha Channel)**: This approach uses the `rgba()` function to specify a color with an alpha channel, which allows for transparency.
2. **RGB (No Alpha Channel)**: This approach uses the `rgb()` function without specifying an alpha channel.

**Options compared**

The benchmark is comparing the performance of these two approaches:

* **Fill style**: The fill style used for drawing the circle on the canvas. In this case, both approaches use a simple fill style.
* **Color values**: The color values used to draw the circle. In this case, one approach uses an RGBA color with alpha channel (0.1), while the other approach uses an RGB color without alpha channel.

**Pros and Cons of different approaches**

Using `rgba()` instead of `rgb()`:

Pros:

* Allows for transparency in graphics.
* Can be useful when rendering images or animations that require blending or layering.

Cons:

* May introduce additional computational overhead due to the need to handle alpha channels.
* Requires careful consideration of color values and blending modes.

Using `rgb()` instead of `rgba()`:

Pros:

* Faster rendering performance, as there is no need to handle alpha channels.
* Simpler color value handling.

Cons:

* Does not allow for transparency in graphics.
* May not be suitable for certain types of graphics or animations that require blending or layering.

**Library and its purpose**

In this benchmark, the library used is HTML5 Canvas. The Canvas API provides a 2D drawing context that allows developers to render graphics and images on the web page.

The `getContext()` method is used to get a reference to the canvas element's 2D drawing context, which is stored in the `ctxOne` and `ctxTwo` variables. This context is then used to draw the circle using various methods, such as `beginPath()`, `fillStyle`, `arc()`, and `fill()`.

**Special JS feature or syntax**

There is no special JavaScript feature or syntax being tested in this benchmark. The code is written in standard JavaScript, with the only notable exception being the use of HTML5 Canvas APIs.

**Other alternatives**

If you wanted to test similar benchmarks, you could consider testing other 2D graphics rendering approaches, such as:

* Using a library like Pixi.js or Three.js instead of HTML5 Canvas.
* Comparing the performance of different JavaScript engines, such as V8 (used by Google Chrome) and SpiderMonkey (used by Mozilla Firefox).
* Testing the performance of various graphics APIs, such as OpenGL ES or DirectX.

Keep in mind that each benchmark will have its own set of requirements and considerations, depending on the specific use case and hardware being targeted.

Related benchmarks:

rgb vs rgba canvas (version: 0)

Comparing performance of: alpha vs no alpha

Created: 8 years ago by: Guest

Jump to the latest result

alpha

no alpha

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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