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Decal only appears on some surfaces?

Hey, I was creating a simple decal material which should show my generated QR code in a texture parameter. No problem at all. I created the material, and thats how it is finished (pretty simple): alt text Now, if I use this inside a deferred decal object, and point that on the floor, it looks as intended: alt text But if I point this against the wall (strange thing is that it works with the other walls, but not those ones..): alt text Why does this happen? Is this a problem with my shader? Thanks for help :)

Edit: Here is also a GIF showing the problem!

Product Version: UE 4.10
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asked Jan 26 '16 at 09:35 AM in Rendering

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iUltimateLP
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avatar image FilipeTessaro Jan 26 '16 at 12:39 PM

Hi

did you rebuilt light to see if it appears?

avatar image iUltimateLP Jan 26 '16 at 02:13 PM

I just tried that out, but still the same problem. Also, that would'nt be the perfect solution as I need to place those decals dynamicially at runtime.

avatar image Jacky Jan 26 '16 at 03:35 PM

Are you rotating the decal properly? That blue arrow should face opposite the surface.

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Hello iUltimateLP -

You are rotating your Decal into indirect lighting and the type of decal you are using will not render in indirect lighting. Take a look at this Answer for details on how to get the decal to render the way you want it to:

https://answers.unrealengine.com/questions/25508/decals-not-rendered-without-direct-lighting.html

Thank You

Eric Ketchum

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answered Jan 26 '16 at 03:40 PM

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Lovecraft_K ♦♦ STAFF
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avatar image iUltimateLP Jan 26 '16 at 03:47 PM

That worked! So it needs to recompile 4000 shaders but however, it works!

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