Scene Capture Cause Crash on IOS 12 with Metal

Thanks for this @chasester1234

Still worked in 2022. I was experiencing a crash with SceneCaptureComponent.

Setting CaptureSource to “SceneColorHDR in RGB 0 in A” made it work.
I think the supported modes are in MobileSceneCaptureRendering.cpp SetCaptureToTargetShaders().