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SceneCapture 2D doesnt show planar reflection

There is a problem. The scene capture doesnt show the planar relections. Is it a bug or there is something I miss?

Thank you in advance,


Product Version: UE 4.19
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asked Jul 05 '18 at 01:39 PM in Bug Reports

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Planar reflection works like another scene capture which mirrors your (player) camera movement in world space according to mirror plane normal vector. And it doesn't know that you look at it through some another scene capture, it still using player camera coordinates and orientation.

So, here is very specific case with runtime captures and cameras.

Maybe you need to simulate reflection by some other way - with simple texture cubemap, or something.

Or just ignore this problem at all.

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answered Jul 05 '18 at 07:08 PM

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avatar image Narcyssus Jul 08 '18 at 11:52 PM

Is it not a bug? Because screen space reflections work, in a bad way but work.

avatar image redbox Jul 09 '18 at 05:21 AM

It is kind of limitation, not a bug.

avatar image Narcyssus Jul 09 '18 at 10:19 AM

Ok, I've understood. I hope the developers will add the possibility to bind planar reflections to a scene capturer.

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So I have no idea how you set it up, but maybe I can give you some general advice on SceneCapture 2D.

Here is a good video explaining SceneCapture 2D, just make sure your settings in the Material you're using are correct and that your texture target is set properly in the SceneCapture component.


You'll need to provide at least a screenshot of the issue you're having for us to help you further than general advice.

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answered Jul 05 '18 at 01:51 PM

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avatar image Narcyssus Jul 05 '18 at 02:41 PM

This is the image captured by a SceneCatpure2D and rendered on a material: alt text This is the captured scene: alt text As you can see, the reflections on the water (made with PlanarReflection), are not captured by the SceneCapture 2D.

sce.jpg (890.4 kB)
sce2.jpg (1.1 MB)
avatar image Zilphy Jul 05 '18 at 08:25 PM

Alright so I do think what redbox said is accurate. I do not think this is going to be possible in a convenient way. However I made a test scene for this and found that Sphere Reflection captures do update in the SceneCapture2D. You could use a very large sphere reflection capture temporarily when looking through the door, and if you transition out you could switch back to the planar reflection for higher quality.

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