Benchmark: rgb vs rgba vs hex canvas

HTML Preparation code:

<canvas id="canvasOne" width="400" height="400"></canvas>
<canvas id="canvasTwo" width="400" height="400"></canvas>
<canvas id="canvasThr" 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");

var canvasThr = document.getElementById("canvasThr");
var ctxThr = canvasThr.getContext("2d");

Tests:

alpha
ctxTwo.fillStyle = 'rgba(255, 255, 255, 0.3)'; ctxTwo.fillRect(0, 0, 400, 400); ctxOne.beginPath(); ctxOne.fillStyle = 'rgba(231, 76, 60, 0.1)'; ctxOne.arc(200, 200, 100, 0, Math.PI * 2, true); ctxOne.fill();
no alpha
ctxTwo.fillStyle = 'rgba(255, 255, 255, 0.3)'; ctxTwo.fillRect(0, 0, 400, 400); ctxTwo.beginPath(); ctxTwo.fillStyle = 'rgb(249, 206, 201)'; ctxTwo.arc(200, 200, 100, 0, Math.PI * 2, true); ctxTwo.fill();
hex
ctxThr.fillStyle = 'rgba(255, 255, 255, 0.3)'; ctxThr.fillRect(0, 0, 400, 400); ctxThr.beginPath(); ctxThr.fillStyle = '#f9cec9'; ctxThr.arc(200, 200, 100, 0, Math.PI * 2, true); ctxThr.fill();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
alpha
no alpha
hex

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

**What is being tested on the provided JSON?**

The provided JSON represents a JavaScript microbenchmark test case, specifically comparing the performance of different color formats when drawing shapes on a canvas: `rgb`, `rgba`, and hexadecimal (`#hex`) colors.

**Options compared:**

1. **`ctxTwo.fillStyle = 'rgba(255, 255, 255, 0.3)'`**: Using `rgba` with alpha channel (transparency) value.
2. **`ctxOne.fillStyle = 'rgba(231, 76, 60, 0.1)'`**: Using `rgba` with an alpha channel and non-full opacity.
3. **`ctxTwo.fillStyle = 'rgb(249, 206, 201)'`**: Using pure RGB color without alpha channel.

**Pros and Cons of different approaches:**

* **`rgba` colors**:
	+ Pros:
		- Allow for transparency and fade effects.
		- Can improve performance in certain graphics applications.
	+ Cons:
		- Require the browser to support alpha blending, which can be slower than using pure RGB colors.
* **Pure `rgb` colors** (like `#f9cec9`):
	+ Pros:
		- Faster rendering, as no alpha channel is involved.
	+ Cons:
		- Lack transparency and fade effects.

**Library usage:**

None of the provided test cases explicitly use any external libraries. However, the use of `document.getElementById()` and `getContext()` suggests that the test is using the browser's built-in 2D drawing API.

**Special JavaScript features or syntax:**

The benchmark uses the following JavaScript feature:

* **Alpha blending**: The test cases demonstrate how to set up alpha channel for transparency in CSS styles (e.g., `rgba(255, 255, 255, 0.3)`).

**Other alternatives:**

If you wanted to compare performance using different color formats or drawing methods, some alternative approaches could be:

* Using `canvas` with other rendering contexts (e.g., WebGL, WebVR).
* Comparing the performance of different graphics APIs (e.g., OpenGL ES vs. DirectX).
* Creating a benchmark that focuses on specific features like anti-aliasing, stroking, or text rendering.

Keep in mind that creating such benchmarks would require significant effort and expertise to design and execute properly.

Related benchmarks:

rgb vs rgba vs hex canvas (version: 0)

Comparing performance of: alpha vs no alpha vs hex

Created: 8 years ago by: Guest

Jump to the latest result

alpha

no alpha

hex

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):