merge
Merge branch 'master' of github.com:hkust-psan1/FYP
added support for specular map
Merge pull request #22 from guanlun/master

specular map
reflection bug fixed
Merge pull request #23 from guanlun/master

reflection bug fixed
added glossy reflection
Merge pull request #24 from guanlun/master

added glossy reflection
multithreading implemented
Merge pull request #25 from guanlun/master

multithreading implemented
multithreading bug fixed
added some interactivity...
Merge pull request #26 from guanlun/master

added some interactivity...
rendering starts from the middle
Merge pull request #27 from guanlun/master

rendering starts from the middle
more interactive
Merge pull request #28 from guanlun/master

more interactive
glossy refraction implemented
Merge pull request #29 from guanlun/master

glossy refraction implemented
better mouse control