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set(Optix_ROOT_DIR "" CACHE PATH "Path to an installed OptiX SDK")
# First try the git submodule location
find_path(
OptiX_INCLUDE_DIRS
NAMES optix.h
PATHS "${CMAKE_CURRENT_SOURCE_DIR}/external/optix-dev/include"
NO_DEFAULT_PATH
)
# If not found and a custom path is provided, try that
if(NOT OptiX_INCLUDE_DIRS AND Optix_ROOT_DIR)
find_path(
OptiX_INCLUDE_DIRS
NAMES optix.h
PATH_SUFFIXES include
PATHS "${Optix_ROOT_DIR}"
NO_DEFAULT_PATH
)
endif()
# Finally, try system paths as fallback
if(NOT OptiX_INCLUDE_DIRS)
find_path(OptiX_INCLUDE_DIRS NAMES optix.h)
endif()
find_package_handle_standard_args(OptiX REQUIRED_VARS OptiX_INCLUDE_DIRS)
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