message: Make sure we don't index into empty RTs array with rtSingle. Refs
diff: @@ -192,7 +192,8 @@ void D3D12RenderState::ApplyState(ID3D12GraphicsCommandList *cmd) const
  D3D12_CPU_DESCRIPTOR_HANDLE rtHandles[8];
  D3D12_CPU_DESCRIPTOR_HANDLE dsvHandle = CPUHandleFromPortableHandle(GetResourceManager(), dsv);
  - UINT numActualHandles = rtSingle ? 1 : (UINT)rts.size();
  + UINT rtCount = (UINT)rts.size();
  + UINT numActualHandles = rtSingle ? RDCMIN(1U, rtCount) : rtCount;
  for(UINT i = 0; i < numActualHandles; i++)
  rtHandles[i] = CPUHandleFromPortableHandle(GetResourceManager(), rts[i]);
  