SANDBOX - Clamp texture in view

Hi people, I’m trying to make a shader to apply an adress mode (clamp) on the whole view display. I don’t want to translate a texture, the clamp effect must be achieved thanks to moved inputs (x & y). So how can I combine the input with renderer view?

See what I mean? I might not be clear enough…

Thanks very much,
Alecz

PS: Just as an information: would it be possible to apply this texture clamping effect to a mesh? Someting like Clamp(3D) with outside vertices pulled outside the renderer…