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Flashlight and Night Vision not working

When I tap 3 times my so called Camera, Flashlight and Night Vision should switch on all together is working in Editor but when I played it on my phone and I tap 3 times the Camera is switch on only but the Flashlight and Night Vision is not workingalt text

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Product Version: UE 4.19
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camera-part-1.jpg (396.5 kB)
camera-part-2.jpg (406.0 kB)
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asked Jun 24 '18 at 11:40 AM in Using UE4

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Predator Aaron
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avatar image Predator Aaron Jun 24 '18 at 12:01 PM

I'm using night vision as Post Process

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2 answers: sort voted first

Have you read through this page: https://docs.unrealengine.com/en-us/Platforms/Mobile/PostProcessEffects

You should check what your post process is actually using and ensure that it supported on mobile platforms, and if it is you have the correct options enabled. Unfortunately post processing on mobile is slow, so you might need an alternative system.

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answered Jun 24 '18 at 12:36 PM

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phil_me_up
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avatar image Predator Aaron Jun 24 '18 at 01:08 PM

Nevermind about the Night Vision, My flashlight somehow not working xD, I'm using Spot light as my flashlight

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For some postprocess features to work on mobile platforms, you need to enable Mobile HDR - go to Project Settings > Engine > Rendering > Mobile and make sure that Mobile HDR is checked. If this doesn't work you'll need to make screenshots of the postprocess materials and their settings for us to figure out what's wrong.

That being said mobile post process has a lot of limitations. You can read about them here: https://docs.unrealengine.com/en-us/Platforms/Mobile/PostProcessEffects

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answered Jun 24 '18 at 12:44 PM

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Felix Leonhart
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avatar image Predator Aaron Jun 24 '18 at 01:08 PM

Nevermind about the Night Vision, My flashlight somehow not working xD, I'm using Spot light as my flashlight

avatar image Felix Leonhart Jun 24 '18 at 01:29 PM

Hope someone proves that I'm wrong but IIRC dynamic movable lightning was not supported on mobile platforms. Spotlights shouldn't work at all. Though there should be limited support for movable point lights (though they can't cast shadows).

Here's a topic that covers it: https://forums.unrealengine.com/development-discussion/rendering/99355-flashlight-on-mobile-device-or-fake-flashlight

avatar image Predator Aaron Jun 24 '18 at 01:33 PM

I'm not sure you would believe me but I have tried using Spotlight as my flashlight on my mobile and it works but now it isn't working again, Strange World

avatar image Felix Leonhart Jun 24 '18 at 01:40 PM

well, my mobile is too old to test that =/

avatar image Predator Aaron Jun 24 '18 at 01:43 PM

I feel something is wrong is either the engine or my phone

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