# Vignette

The **Vignette** effect darkens the edges of an image. This simulates the effect in a real-world camera lens caused by thick or stacked filters, secondary lenses, or an improper lens hood. You can use the **Vignette** effect to draw attention to the center of an image.

![Scene without Vignette](images/PostProcessing-Vignette-1.png)
Scene without **Vignette** effect.

![Scene with Vignette](images/PostProcessing-Vignette-2.png)
Scene with **Vignette** effect.

The Vignette effect in the post-processing stack has two modes:

- [Classic](#classic)
- [Masked](#masked)

<a name="classic"></a>
## Classic

**Classic** mode has parametric controls for the position, shape and intensity of the Vignette. This is the most common way to use the effect.

### Properties

| Property   | Function                                                 |
| :-------------- | :------------------------------------------------------------ |
| Mode       | Select the type of **Vignette** to use. |
| Color      | Set the color of the Vignette.      |
| Center     | Set the Vignette center point (screen center is [0.5,0.5]). |
| Intensity  | Set the amount of vignetting on screen.                              |
| Smoothness | Set the smoothness of the Vignette borders.                          |
| Roundness  | Set the value to round the Vignette. Lower values will make a more squared vignette.              |
| Rounded    | Enable this checkbox to make the vignette perfectly round. When disable, the Vignette effect is dependent on the current aspect ratio. |

<a name="masked"></a>
## Masked

**Masked** mode uses a custom texture mask and multiplies it over the scene to create a Vignette effect. This mode can be used to create less common or irregular vignetting effects.

### Properties

| Property  | Function                                            |
| :------------- | :------------------------------------------------------- |
| Mode      | Select the type of **Vignette** to use. |
| Color     | Set the color of the Vignette. Use the alpha channel for transparency. |
| Mask      | Select a black and white mask to use as a vignette.            |
| Opacity   | Set the mask opacity value.                                           |

### Requirements

- Shader Model 3
