When apply a material from the material bundle directly to a model in
the 3D scene, check frist if there is an existing material that has no
properties set, if so apply it instead of creating a new instance.
Also few tweaks.
Change-Id: I4ddadfd84442164b671645af5e4f5d9e8dcb7cb0
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>
The use of 'auto' here is the simplest way out and should not be
taked a precedence for other code.
Change-Id: I4435e7211139bccfca4b10ed2407ba39afe0b400
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
(cherry picked from commit b852886763)
Reviewed-by: hjk <hjk@qt.io>
