When i compile this plugin in ue 4.15.0, i got following error.
'RHICmdList': is not a member of 'FRHICommandListImmediate'
'Clear': is not a member of 'FRHICommandListImmediate'
Seems like the function "RHICmdList.Clear()" has no longer existed in 4.15 version of UE.
But i didn't find a alternative to this function, so i just commented it.(after doing this, it works)