I am trying to work with Affinity Photo for the first time for editing 360 equirectangular images in the live projection mode.
I want to cover a poster on the wall with a new graphic, however the poster exceeds the size of the vertical FOV, so the corners of the new layer fall outside the viewport.
I cannot pan the live projection with both layers retaining their positions relative to each other (only the equirectangular pans, but the graphic layer stays still).
I can only pan again with both layers after merging down the new graphic onto the equirectangular into a single layer (is this correct?).
But when I exit the live projection, the corners of the new graphic that fell outside the viewport are cut off.
I could only get the corners to fit in the viewport if I use the straighten tool and turn by 30 degrees.
But after merging down and exiting live projection, the image is no longer straight. If I use the straighten tool and turn by negative -30 degrees, then exit, it's not exactly as straight as before, and the yaw/pitch are not exactly the same.
Is there some way to get the corners to fit into the viewport, or expand the vertical FOV, without messing up the projection with the straightening tool?