message: require OSPRay v1.8.0
diff: @@ -35,7 +35,7 @@ find_package(glfw3 REQUIRED)
  set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
  set(THREADS_PREFER_PTHREAD_FLAG TRUE) # for gcc6
  find_package(Threads REQUIRED)
  -find_package(ospray 1.7.1 REQUIRED)
  +find_package(ospray 1.8.0 REQUIRED)
  include(${OSPRAY_USE_FILE})
  