Compute Stochastic Screen Space Reflections
Compute Stochastic Screen Space Reflections for Unity post processing. Utilizing shared memory for performance. Should be mostly production ready, except for a few Hierarchical Z-depth casting artifacts.
Contents
- Features
- Requirements
- Installation
- Usage
- References
- Showcase
- Real life usage
- Screenshots
- Before and After
- Performance
Features
- Hierarchical Z-depth casting
- Temporal reflection depth reprojection
- Median Filtering for extra denoising
- Reflection Color Mipmap Pyramid
- Raycast and resolve pass downsampling
- Frame reprojection for faking multiple bounces
- Specular elongation
- Contact hardening
Requirements
- Works only with deferred rendering
- Compute shader capable video card
- Unity Post Processing v2
- Tested with Unity 2018.2
Installation
In a unity project go to your Packages folder. Open manifest.json and add into the dependencies the following line:
"com.simeonradivoev.stochastic-reflections": "https://github.com/simeonradivoev/ComputeStochasticReflections.git"
It should look something like this:
{
"dependencies": {
"com.unity.ugui": "1.0.0",
"com.unity.modules.ui": "1.0.0",
"com.simeonradivoev.stochastic-reflections": "https://github.com/simeonradivoev/ComputeStochasticReflections.git",
}
}
Usage
Just add a new effect in a post processing profile under Custom/Stochastic Screen Space Reflections
For VR use the test branch called StereoRendering. It currently only supports multi pass rendering.
References
- Rewritten from Xerxes1138
- Based mainly on Tomasz Stachowiak and Yasin Uludag, Siggraph15
Showcase
Real life usage
Screenshots
Before and After
Performance
Tested on a GTX 1070 at 1080p
-
Highest Quality, High Quality Blur
- Raycasting: 1.4 ms
- Blur: 0.73 ms
- Temporal: 0.67 ms
- Resolve: 0.55 ms
- Total + Others: 4.15 ms
-
Raycast and Resolved downsampled, Low Quality Blur
- Raycasting: 0.5 ms
- Temporal: 0.19 ms
- Resolve: 0.19 ms
- Total + Others: 1.7 ms