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Occlude actor through transparent material.

To sum up what I'm asking, I'd like to achieve the same effect as seen in the beginning of the Infiltrator Demo where the main actor is hiding behind a cloaking wall of sorts.

To me, it looks as though it is a poly plane, with a material on it that is getting a 2d render from a camera that is behind that main actor, and that material only shows up when the camera gets close, and it is somehow culling out the character out.

What I would like to know is how is the main actor culled out when viewing the cloaking wall from one side? This is the desired effect I am after.


I wanted to investigate how this was done in the demo itself, however the demo just crashes for me at 95% loading, so I gave up on that idea.

I have investigated a few ways of doing this, and every way I've looked at so far is convoluted and not too feasible, especially in a multiplayer environment.

The only way I could possibly see this working is by changing some of the rendering or culling code or something, but I won't lie, I do not have the skill or knowledge to dive into those waters.

I know the engine is capable of occlusion culling, however that only seems to occur when there is a solid material blocking the camera's view. I wonder how it could be done with a transparent material.

I am not so much looking for someone to tell me exactly how the effect is achieved, as I do like to work things out on my own (how else will I learn?), but I would like to know if that invisibility shield shown in the infiltrator demo was specifically set up for demonstration purposes, or if this is feasible to do real-time during game-play (specifically multiplayer)...

If I can't really do this, that's OK, I will more than likely just do something like making a specific target invisible instead, which is a little boring in comparison, but still functional....I just wanted to do something a bit more interesting than simply changing the player's material.

Thank you in advance. :)

Product Version: UE 4.10
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asked Mar 23 '16 at 11:29 PM in Rendering

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avatar image mrg7_ Aug 29 '16 at 03:27 AM

I am experimenting with this right now using the UnrealAR Plugin, unfortunately without success. Have you made any progress?

avatar image Otreum Aug 29 '16 at 07:53 AM

I never did, I pushed the idea aside in favor of just having an invisibility cloak for the character.

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Have you found an answer to this in the mean time? I'm looking for the exact same effect.

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answered Feb 13 '19 at 05:47 PM

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