However when I used the texture within a post-process material and view it in a render target I notice that the image is clipped / shifted by a bit. Why is this happening? What can I do to rectify it?
Here’s the post process material I created to simply connect the texture to the emissive
Finally, found the issue. The default UV Coordinates are the UV coordinates for the ViewSize which “may not” be the coordinates needed from the texture. So a simple UV scaling operation like the one shown below yields the expected result in the scene render target. Perhaps this could be made a bit more clear in the documentation of UE.
Thanks very much for posting the solution! This saved me some time, tested and working in UE4.15.2. I agree, it would be great if this was mentioned in the documentation for Post Process Materials.