A film grain material (post effect) for Snapchat's Lens Studio.
It uses 0mb of your lens storage, so you don't need to use animated textures. (It only uses about 4mb RAM.) Also known as 'Cinematic Grain'.
To use: simply import the shader file and drag it into a "Post Effects -> Color Correction" scene object. Or on a Screen Image. Then tweak it by selecting the shader in the Resources panel.
Tip: In LS 3.0 and 3.1, the preview looks stretched on the front cam. Switching to the back cam in the preview window displays it correctly.