Where is Cycles Border in 2.8 [screenshot included]

[anon62435837]

Where is this ?

Is it similar to “Render Region” in 2.8 ? or Some feature is missing/added ?

[jerzygorskiart (Jerzy Górski)]

for camera view it’s in the output → dimensions → render region

for the custom view it’s in the 3D viewport → view → Render region