XeFG redundant resource barrier transition causing a crash

[FakeMichau]

According to the documentation, for resources with the RV_ONLY_NOW validity, the ideal state should be COPY_SOURCE.
When providing a resource with such state, XeFG seems to not be checking if the resource is already in the COPY_SOURCE state and tries to place a transition barrier COPY_SOURCE -> COPY_SOURCE which is not allowed and causes the application to crash.

D3D12 ERROR: ID3D12CommandList::ResourceBarrier: Before and after states must be different. [ RESOURCE_MANIPULATION ERROR #525: RESOURCE_BARRIER_MATCHING_STATES]

[mike-intel]

Thank you for reporting the problem! We will update the documentation and fix this optimization in the next patch.

[xess-intel]

Fix is available in https://github.com/intel/xess/releases/tag/v2.1.1