Qt Quick 3D - Principled Material Example
 QT += quick quick3d
 target.path = $$[QT_INSTALL_EXAMPLES]/quick3d/principledmaterial
 INSTALLS += target
 SOURCES += \
     main.cpp \
     imagehelper.cpp
 HEADERS += \
     imagehelper.h
 RESOURCES += \
     assets.qrc \
     qml.qrc
 OTHER_FILES += \
     doc/src/*.*
 CONFIG += qmltypes
 QML_IMPORT_NAME = Example
 QML_IMPORT_MAJOR_VERSION = 1