Test against geometry rendering

Change-Id: I8a521882a04a8ab655d14b834d85f553591f3a98
Initial work to reformat the window level test

Change-Id: I6682a41da3857e306436f4ef5c93c9d4fee56f4e
Replaced old window level test for a better one

Change-Id: Ie783bd25ec685314059967c6808e39a8f3591d0e
Check if extensions are supported for the new window level test

Change-Id: Icf69c187898b09f962a5498d8b465fd7c9ac9cd1
Merge topic 'windowLevel_test' into master

48d23e21 Check if extensions are supported for the new window level test
c21a5ee3 Replaced old window level test for a better one
b65dde23 Initial work to reformat the window level test
c6a871a3 Test against geometry rendering