Shader creates a small viewport on DX10/11

Hey.

So, i have ported a shader some time ago, and when i moved it to ReShade 3.0, it creates a small viewport if the ReShade overlay is not on screen.

Does anyone have a clue on what to do to fix this?



It only happens on DX10/11 and with this shader.

Don't know how I did it but it is a cool side effect.