47 lines
2.1 KiB
Markdown
47 lines
2.1 KiB
Markdown
# Chromatic Aberration
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The **Chromatic Aberration** effect splits color along boundaries in an image into their red, green, and blue channels. This reproduces the effect a real-world camera produces when light refracts and causes the wavelengths to disperse in the lens.
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Unity provides support for red/blue and green/purple fringing. You can define fringing colors by using an input texture.
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Scene with **Chromatic Aberration**.
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### Properties
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| Property | Function |
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| :------------ | :------------------------------------------------------------ |
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| Spectral Lut | Select the texture used for a custom fringing color. When left empty, Unity will use the default texture. |
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| Intensity | Set the strength of the **Chromatic Aberration** effect. |
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| Fast Mode | Use a faster variant of **Chromatic Aberration** effect for improved performance. |
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### Details
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**Chromatic Aberration** uses a `Spectral Lut` input for custom fringing. Four example spectral textures are provided in the repository:
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- Red/Blue (Default)
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- Blue/Red
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- Green/Purple
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- Purple/Green
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You can create custom spectral textures in any image editing software. While the resolution size of spectral textures are not limited, small sizes like the 3x1 textures provided work best.
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You can achieve a rougher effect by manually setting the **Filter Mode** of the input texture to **Point (no filter)** in the [Texture Import Settings](https://docs.unity3d.com/Manual/class-TextureImporter.html) window.
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### Performance
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The performance of the **Chromatic Aberration** effect depends on its `Intensity` value. If the `Intensity` value is high, the render uses more samples to render smooth chromatic aberrations. This makes the process take more time.
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**Fast Mode** is the quickest mode and recommended where possible. However, it's not as smooth as the regular mode.
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### Requirements
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- Shader Model 3
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