# URP-Iridescence-Example

**Repository Path**: ralphylee/URP-Iridescence-Example

## Basic Information

- **Project Name**: URP-Iridescence-Example
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: CC0-1.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-12-07
- **Last Updated**: 2024-05-10

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# URP Iridescence Example
![](/Images/sample-01.png)

An example of iridescence shader extending the Lit shader in Unity URP.

Single-layered thin-film BRDF by [Laurent Belcour and Pascal Barla's paper](https://hal.archives-ouvertes.fr/hal-01518344/document).

## TODO
- [x] Single-layered thin-film (Soap bubble)
- [ ] Multi-layered thin-film
- [ ] Diffraction grating (CD-ROM)
- [ ] Biological iridescence (Morpho butterfly wing scales)

I'll need to further study the underlying principle of these iridescences and find a way to modeling them that suitable for real-time rendering.

## Requirement
- Unity 2019.3.2f1 or higher
- Universal Rendering Pipeline 7.4.1

## Screenshots
#### Thin-film
![](/Images/sample-02.png)
![](/Images/screenshot-thinfilm-metals.png)

## Resources
- Model - UnityBall by Unity Technologies
- Skybox - [TV Studio](https://hdrihaven.com/hdri/?h=tv_studio) by Sergej Majboroda
- Skybox - [Spruit Sunrise](https://hdrihaven.com/hdri/?h=spruit_sunrise) by Greg Zaal

## License
#### Code
CC0-1.0

#### All HDRIs from HDRIHaven.com
CC0