Benchmark: rgb vs rgba vs hex with opacity 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
ctxOne.beginPath(); ctxOne.fillStyle = 'rgba(231, 76, 60, 0.1)'; ctxTwo.arc(200, 200, 100, 0, Math.PI * 2, true); ctxOne.fill();
no alpha
ctxTwo.beginPath(); ctxTwo.fillStyle = 'rgb(249, 206, 201)'; ctxTwo.arc(200, 200, 100, 0, Math.PI * 2, true); ctxTwo.fill();
hex
ctxTwo.beginPath(); ctxTwo.fillStyle = '#1e222ea6'; ctxTwo.arc(200, 200, 100, 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
hex

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 5 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36 Edg/142.0.0.0

Browser/OS: Chrome 142 on Windows

View result in a separate tab

Test name	Executions per second
alpha	3230288.2 Ops/sec
no alpha	3184241.8 Ops/sec
hex	3309036.5 Ops/sec

Autogenerated LLM Summary (model gpt-4o-mini, generated 11 months ago):

LLMs can make mistakes. Check important info.

The provided benchmark focuses on testing the performance of different color representation methods in the HTML5 Canvas API when rendering with various opacity configurations. The benchmark compares three approaches to defining colors and their effects on performance:

1. **RGBA with Alpha (Opacity)**:
   - **Test Name**: "alpha"
   - **Benchmark Definition**: `ctxOne.fillStyle = 'rgba(231, 76, 60, 0.1)'`, where the fill color has an alpha value of 0.1, indicating a 10% opacity.
   - **Performance Result**: Executions Per Second: 4,411,863.0
   - **Pros**: Allows for transparency effects, useful in applications where depth or layering of elements is required.
   - **Cons**: The presence of alpha can introduce additional overhead in rendering since the browser has to blend the color with the background.

2. **RGB without Alpha (No Opacity)**:
   - **Test Name**: "no alpha"
   - **Benchmark Definition**: `ctxTwo.fillStyle = 'rgb(249, 206, 201)'`, which uses a solid color with no opacity.
   - **Performance Result**: Executions Per Second: 17,645,712.0
   - **Pros**: Faster rendering since it does not require blending, making it more efficient for pure color fills.
   - **Cons**: Lacks the ability to create transparent effects, which can limit design flexibility.

3. **Hex Color with Alpha**:
   - **Test Name**: "hex"
   - **Benchmark Definition**: `ctxTwo.fillStyle = '#1e222ea6'`, where the hex color includes an alpha component (`a6` in hex represents the opacity).
   - **Performance Result**: Executions Per Second: 17,700,366.0
   - **Pros**: Keeps the familiar hex notation while providing an alpha transparency option.
   - **Cons**: Similar to the rgba approach, it can be slower due to the rendering of transparency.

### Considerations:
- The performance results indicate that rendering solid colors (RGB without alpha) is significantly faster compared to rendering colors with transparency (RGBA and hex with transparency).
- The choice of using RGBA or hex with transparency is often driven by specific design needs, such as requiring layered visual effects.

### Alternatives:
- **HSL (Hue, Saturation, Lightness)**: Although not tested here, HSL can be used as an alternative to RGB or hex, offering a different approach to defining colors. It may also accept transparency via HSLA (HSL with alpha).
- **SVG**: For more complex shapes and effects, Scalable Vector Graphics (SVG) can provide more efficient rendering and a broader range of graphic capabilities.
- **WebGL**: For performance-intensive applications, especially in 3D graphics, using WebGL may yield superior performance due to GPU acceleration.
- **CSS**: Depending on the usage context, CSS can also define colors with transparency and might leverage performance optimizations, particularly for simple UI elements.

In conclusion, the benchmark reveals that while transparency adds visual appeal, it typically incurs a performance cost. As such, the selection between RGBA, hex with alpha, and solid RGB should hinge on the specific requirements of the application and the performance constraints encountered.

Related benchmarks:

rgb vs rgba vs hex with opacity canvas (version: 1)

Comparing performance of: alpha vs no alpha vs hex

Created: 11 months ago by: Guest

Jump to the latest result

alpha

no alpha

hex

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model gpt-4o-mini, generated 11 months ago):