I did an install last week on a curved DJ booth last week with a single projector. I was surprised at how much of it I was able to cover. The edges of the booth are almost perpendicular to the projector so it stretched the projections out so much that I had 1" pixels on the X axis. I used the vignette effect to get rid of this issue on the top, bottom and right side. However it didnt work quite as expected on the left side. I suspect it may have been due to the projector being mounted to the right a bit. I ended up using another layer and a gradient. It'd be really awesome if we could get an edge fade effect with more control or be able to activate edge blending without a second monitor.
As I type this I realized I may be able to do the later solution. If I add another slice, can I activate edge blending without selecting an output monitor? If this is the case can this be done on all four sides of my output slice? I've done edge blending before but I've never done anything with this much distortion correction.... We had hundreds of points on the grid. In this case the top/bottom of the output slice looked like a U shape. If I use edge blending, will the fade follow the U or will it be straight?