ppb_graphics3d: fix transparency issue
ppb_graphics3d: fix transparency issue

Papapashu/freshplayerplugin,reuben/freshplayerplugin,reuben/freshplayerplugin,grevutiu-gabriel/freshplayerplugin,grevutiu-gabriel/freshplayerplugin,reuben/freshplayerplugin,Papapashu/freshplayerplugin,Papapashu/freshplayerplugin