add new utility class QueryObject for measuring number of rendered samples

8 jobs for QueryObject
Status Name Job ID Coverage
  Test
passed clang-c++11-Qt4 #814
Linux

00:34:35

passed clang-c++11-Qt5 #818
Linux

00:47:49

passed clang-c++98-Qt4 #816
Linux

00:28:01

passed clang-c++98-Qt5 #820
Linux

00:36:23

passed gcc-c++11-Qt4 #813
Linux

00:53:02

passed gcc-c++11-Qt5 #817
Linux

00:55:13

passed gcc-c++98-Qt4 #815
Linux

00:37:08

passed gcc-c++98-Qt5 #819
Linux

00:42:16