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360° FOV - Equirectangular Projection

This addon renders your game to a Equirectangular Projection which gives you a full 360° Field of View.

You can find the settings in the Spawn menu under:
Right Panel > Options > Player > Equirectangular Projection

This addon should be compactible with the High Resolution Camera: 8k+ screenshots addon.

How this actually works:
The game renders the scene six times: up, down, left, right, front and back.
Then those renders will be used as textures on the model "models/cubemath/equirectangular.mdl".
That model will be drawn filling out your entire screen.