Camera.cullingMask @ Runtime

Unity Engine
1

Hi again. Alright heres the thing, i know that in order to assign cullingMask at runtime , you can use the bitshift operator as shown in the docs to assign any one single , or, all but one single … but what about multiple layers. Honestly im not to cool with concept / logic behind bits and bytes yet, but i know that this …

camera.cullingMask = ~(1 << 8);

can and does draw all layers except for 8. But what if i want to assign at runtime, layers 8 and 2 for eg : to the mask? Help would be grrreat! Thanks.

EDITED :

hmm on second thought , bah nevermind , prolly jsut easier to change the layer at runtime , and alter it between as needed.

2 
camera.cullingMask = ~((1 << 8) + (1 << 2));
3

haha , ahh nice , that easy to add em together :stuck_out_tongue: Thaniks m8.

4

You shouldn’t be adding them together as that will most likely produce the wrong mask.
The bitwise OR operator is the one you need :smile:

camera.cullingMask = ~((1 << 2) | (1 << 8));

More info here: How do I use layermasks? - Questions & Answers - Unity Discussions

5

Ahh there we go , yea i though something was hokey about just adding them , cool now it makes much more sense. Thanks Aniani. BTW, opted to just change the layer the object was in, to a layer the camera was already currently ignoring. This solved everything just the same.

6

No problem, glad to hear it’s all sorted. For reference though, you could do the following to edit the mask at runtime:

var layerA : int = 1 << 2;
var layerB : int = 1 << 8;

// Add layerA to the mask
camera.cullingMask |= layerA;

// Remove layerB from the mask
camera.cullingMask = ~layerB;
7

Sweet , operator methods are not my strong point, those are great visual examples of how to use that. Nice , thanks for the updates :stuck_out_tongue: