I’m using ConstantProjection (DX11.Effect) to render from the view of the spectator.
The surfaces that is being projected onto are plain rectangular screens. The way I can see how to get the image I need to feed to the projector is to place a camera seeing a whole screen and sending that to the corresponding projector.
In this case that is quite a hassle, considering that the projected image is just a flat rectangular image.
I would like to avoid setting up a camera and in stead just get the texture that is on the quad, how can I do that?
UPDATE: I have a functioning setup using cameras, but I think there are some pixel precision that does not align precisely.