SoftMaskForUGUI
===
UI Soft Mask is a smooth masking component for Unity UI (uGUI) elements.
[](https://openupm.com/packages/com.coffee.softmask-for-ugui/)
[](https://github.com/mob-sakai/SoftMaskForUGUI/releases)
[](https://github.com/mob-sakai/SoftMaskForUGUI/releases)
[](https://github.com/mob-sakai/SoftMaskForUGUI/blob/upm/LICENSE.txt)
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<< [Description](#Description) | [WebGL Demo](#demo) | [Installation](#installation) | [Usage](#usage) | [For Your Custom Shader](#support-soft-masks-with-your-custom-shaders) | [Contributing](#contributing) >>
## Description
By using SoftMask instead of the default Mask component, you can beautifully represent the rounded edges of UI elements.
#### Features
* SoftMask is compatible with Mask.
* You can adjust the visible part.
* Text, Image, RawImage can be used as a masking.
* Support multiple-sprites and SpriteAtlas.
* Support up to 4 nested soft masks.
* Support scroll view.
* Support inversed soft mask.
* Support overlay, camera space and world space.
* (Option) Raycast is filtered only for the visible part.
* Contain soft maskable UI shader.
* Support soft masks in your custom shaders by adding just 3 lines. For details, please see [Development Note](#support-soft-masks-in-your-custom-shaders).
* Adjust soft mask buffer size to improve performance.
* Convert existing Mask to SoftMask from context menu.
* Render the soft mask buffer only when needed to improve performance.
* Add a SoftMaskable component to the child UI elements of SoftMask from the inspector.
* Preview soft mask buffer in inspector.
* Make multiple holes on one background by 'Parts of parent' option.
* [Support TextMeshPro](#support-textmeshpro)
#### Components
| Component | Description | Screenshot |
| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------- |
| SoftMask | Use instead of Mask for smooth masking.
**Show Mask Graphic:** Show the graphic that is associated with the Mask render area.
**Desampling Rate:** The desampling rate for soft mask buffer. The larger the value, the better the performance but the lower the quality.
**Softness:** The value used by the soft mask to select the area of influence defined over the soft mask's graphic.
**Ignore Parent:** Should the soft mask ignore parent soft masks?
**Part Of Parent:** Is the soft mask a part of parent soft mask? | ![softmask][] |
| SoftMaskable | Add this component to Graphic under SoftMask for smooth masking.
**Use Stencil:** Use stencil buffer to mask. If disabled, the stencil buffer is ignored.
**RaycastFilter:** Use soft-masked raycast target. **This option is expensive.**
**Mask Interaction:** The interaction for each mask layers. | ![softmaskable][] |
[softmask]:https://user-images.githubusercontent.com/12690315/90349065-44e5e780-e073-11ea-8ca2-c005bff90def.png
[softmaskable]:https://user-images.githubusercontent.com/12690315/90349068-47e0d800-e073-11ea-9749-18df13b8cb87.png
## Demo
[WebGL Demo](http://mob-sakai.github.io/SoftMaskForUGUI)
## Installation
#### Requirement
* Unity 2017.1 or later (2018.x, 2019.x and 2020.x are included)
* No other SDK are required
#### Using OpenUPM (for Unity 2018.3 or later)
This package is available on [OpenUPM](https://openupm.com).
You can install it via [openupm-cli](https://github.com/openupm/openupm-cli).
```
openupm add com.coffee.softmask-for-ugui
```
#### Using Git (for Unity 2018.3 or later)
Find the manifest.json file in the Packages folder of your project and edit it to look like this:
```js
{
"dependencies": {
"com.coffee.softmask-for-ugui": "https://github.com/mob-sakai/SoftMaskForUGUI.git",
...
},
}
```
To update the package, change suffix `#{version}` to the target version.
* e.g. `"com.coffee.softmask-for-ugui": "https://github.com/mob-sakai/SoftMaskForUGUI.git#1.0.0",`
Or, use [UpmGitExtension](https://github.com/mob-sakai/UpmGitExtension) to install and update the package.
#### For Unity 2018.2 or earlier
1. Download a source code zip file from [Releases](https://github.com/mob-sakai/SoftMaskForUGUI/releases) page
2. Extract it
3. Import it into the following directory in your Unity project
- `Packages` (It works as an embedded package. For Unity 2018.1 or later)
- `Assets` (Legacy way. For Unity 2017.1 or later)
## How to play demo
- For Unity 2019.1 or later
- Open `Package Manager` window and select `UI Soft Mask` package in package list and click `Demo > Import in project` button
- For Unity 2018.4 or earlier
- Click `Assets/Samples/UISoftMask/Import Demo` from menu
The assets will be imported into `Assets/Samples/UI Soft Mask/{version}/Demo`.
Open `UISoftMask_Demo` scene and play it.
## Usage
1. Add a SoftMask component instead of Mask component.
Or, convert an existing Mask component to SoftMask component from the context menu.
2. Add a SoftMaskable components to the child UI elements of the SoftMask component.
Or, add a SoftMaskable components from the inspector of the SoftMask component.
3. Adjust softness setting of SoftMask.
4. Enjoy!
## Support TextMeshPro
To use SoftMask with TextMeshPro, import a sample asset.
- For Unity 2019.1 or later
- Open `Package Manager` window and select `UI Soft Mask` package in package list and click `TextMeshPro Support > Import in project` button
- For Unity 2018.4 or earlier
- Click `Assets/Samples/UISoftMask/Import TextMeshPro Support` from menu
The assets will be imported into `Assets/Samples/UI Soft Mask/{version}/TextMeshPro Support`.
**NOTE:** You must import `TMP Essential Resources` before using. They include shaders, fonts, etc.
**NOTE:** If the shader error is not resolved, reimport the shader. Or, import the `TextMeshPro Support` again.
## Support soft masks with your custom shaders
Only a few steps are needed to support soft mask in your custom shaders!
1. Duplicate your shader file and add the ` (SoftMaskable)` suffix to the file name.
```
Your_Custom_Shader.shader
-> Your_Custom_Shader (SoftMaskable).shader
```
1. Modify the shader name (defined at the beginning of the shader file) as follows:
- Add `Hidden/` prefix
- Add ` (SoftMaskable)` suffix
```
Shader "UI/Your_Custom_Shader"
-> Shader "Hidden/UI/Your_Custom_Shader (SoftMaskable)"
```
1. Add `#pragma` and `#include` directives, where `SOFTMASK_EDITOR` is an editor-only keyword and is not included in the build.
If you didn't use package manager to install, include `SoftMask.cginc` in the appropriate path instead.
```
#include "Packages/com.coffee.softmask-for-ugui/Shaders/SoftMask.cginc"
#pragma shader_feature __ SOFTMASK_EDITOR
```
2. Apply a soft mask in the fragment shader.
This operation determines the final alpha according to the soft mask buffer.
- `IN.vertex`: the clip position
- `IN.worldPosition`: the world position
```
color.a *= SoftMask(IN.vertex, IN.worldPosition);
```
As an example of implementation, please see [UI-Default-SoftMask.shader](https://github.com/mob-sakai/SoftMaskForUGUI/blob/upm/Shaders/Resources/UI-Default-SoftMaskable.shader).
## Contributing
### Issues
Issues are very valuable to this project.
- Ideas are a valuable source of contributions others can make
- Problems show where this project is lacking
- With a question you show where contributors can improve the user experience
### Pull Requests
Pull requests are, a great way to get your ideas into this repository.
See [CONTRIBUTING.md](/../../blob/upm/CONTRIBUTING.md).
### Support
This is an open source project that I am developing in my spare time.
If you like it, please support me.
With your support, I can spend more time on development. :)
[](https://www.patreon.com/join/2343451?)
[](https://github.com/users/mob-sakai/sponsorship)
## License
* MIT
* © UTJ/UCL
## Author
[mob-sakai](https://github.com/mob-sakai)
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## See Also
* GitHub page : https://github.com/mob-sakai/SoftMaskForUGUI
* Releases : https://github.com/mob-sakai/SoftMaskForUGUI/releases
* Issue tracker : https://github.com/mob-sakai/SoftMaskForUGUI/issues
* Change log : https://github.com/mob-sakai/SoftMaskForUGUI/blob/upm/CHANGELOG.md