some little changes in bump shader
Merge branch 'feat_Ti_Ca' of https://github.com/FUSEEProjectTeam/Fusee into feat_Ti_Ca
Merge branch 'feat_Ti_Ca' of https://github.com/FUSEEProjectTeam/Fusee into feat_Ti_Ca
shader update
Merge branch 'feat_Ti_Ca' of https://github.com/FUSEEProjectTeam/Fusee into feat_Ti_Ca