## References


### Screen Space Ambient Occlusion

[http://ogldev.atspace.co.uk/www/tutorial45/tutorial45.html](http://ogldev.atspace.co.uk/www/tutorial45/tutorial45.html)

[https://learnopengl.com/Advanced-Lighting/SSAO](https://learnopengl.com/Advanced-Lighting/SSAO)

### Shadow Volumes

[http://developer.download.nvidia.com/books/HTML/gpugems/gpugems_ch09.html](http://developer.download.nvidia.com/books/HTML/gpugems/gpugems_ch09.html)

[http://ogldev.atspace.co.uk/www/tutorial40/tutorial40.html
](http://ogldev.atspace.co.uk/www/tutorial40/tutorial40.html)

### Percentage Closer Filtering

[http://ogldev.atspace.co.uk/www/tutorial42/tutorial42.html
](http://ogldev.atspace.co.uk/www/tutorial42/tutorial42.html)