I'm experiencing a strange issue where I'm seeing black in a metal drawable where it should be a different color. When I capture the frame and inspect the returned value from the fragment function, it's correct, but the drawable isn't. This screenshot hopefully illustrates the issue. I've not found any references to similar issues. I saw something about some out of bounds or NaN values being dropped to 0 (which would be black), but the debugger doesn't indicate this is happening.

I have to guess which command queue is the one I want to debug in Xcode here: I have label set, but it doesn't seem to affect this part of Xcode.

Is there a way in Xcode to change the image viewer to use nearest filtering instead of linear (which I think it uses by default)? I'd like to be able to example exact pixels in my images, similar to I do in the Metal debugger.