How does one get a reflection effect on a cubemap without mirroring?

[Jjman739]

I am creating a portal system for my game that uses 3D spheres for the portals. I have taken a scene capture cubemap at one of the portals and had it converted to a material to be used on the other portal. It has the visual effect that I intended, except that everything is mirrored. After some looking around, I figured out that the issue is the ReflectionVectorWS node in the material. I tried modifying it with other nodes, but the only ‘fix’ I found made it so that it appeared as a completely flat circular window instead of a sphere.

Here is a picture of the material blueprint. If you look at the platform in the preview, there is text that appears normal in the actual game.

What I want to know is whether or not I can modify the reflection vector so that it maintains its 3D effect while removing the mirror effect, or if there is some other way to accomplish this effect…

Until I have a solution, I will be using the workaround of flipping the player around when using the portal.

[Jjman739]

So, to any future people out there who want to use this idea, I just found the workaround I needed. The solution was to use 2D scene captures instead of cubemaps, and rotate the camera and the mesh based on the player’s relative location.

[Crono]

For anyone who comes across this in the future, if you want to view/sample a cubemap with a non-reflected perspective, you can subtract the camera position from the pixel world position to get the appropriate vector.