You can find the source code and contribute to the source repository on GitHub.
In order to get started, just read these pages:
A Minecraft 1.7.10 mod that allows for a more flexible usage of depth of field and focus in Minecraft movies. It patches supported shaderpacks so that they work together with the mod.
You can find the source code and contribute to the source repository on GitHub.
In order to get started, just read these pages: