A basic question, I think

[ablation]

Hello everyone, I would just like to know what bitmasks are, in layman terms, since I tried elsewhere and I still don't understand. Thanks

[spacegaier]

A bit mask basically is just a bit or byte string (e.g. 0xFFAABBDD) used to mask a certain object. That mask can later be used to compare against another mask to check whether a certain action should be executed.

For example Ogre uses mask to determine visible objects for a viewport. So you tell the viewport to only render objects that have a certain mask (an unsigned int in Ogre's case) set that matches the mask set for the viewport. Good example and explanation in this thread: http://www.ogre3d.org/forums/viewtopic. ... 87#p387087

[ablation]

Thank you very much that helped me a lot. Thanks