# One side transparency in building windows

**URL:** <https://forum.babylonjs.com/t/one-side-transparency-in-building-windows/20217>\
**Category:** Demos and projects\
**Tags:** tutorial\
**Created:** [April 22, 2021, 8:35am UTC](https://forum.babylonjs.com/t/one-side-transparency-in-building-windows/20217 "2021-04-22T08:35:35Z")\
**Posts on this page:** 1\
**Showing post:** 10

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**Author:** ![roland](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/roland/32/38940_2.png) [@roland](https://forum.babylonjs.com/u/roland)\
**Post date:** [April 23, 2021, 11:45am UTC](https://forum.babylonjs.com/t/one-side-transparency-in-building-windows/20217/10 "2021-04-23T11:45:03Z")

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Hey @mawa!

Thanks and thanks! 🙂

Yes, the reflections are far from real and I have just noticed, that the spheres are reflected upside down and the scaling ehm, it is another story, but I leave the remaining issues to be fixed by someone else, maybe even by you 🙂

Also it would be cool to calculate the relative position of reflected objects from the reflector origin and decide dynamically, which objects can be reflected by a given reflector.

Originally I wanted to share only the concept of the transparent custom shader and didn’t pay too much attention to the reflections, because as I already wrote, I don’t need them in my project, now. But I felt a bit dumb after demonstrating the shader with the cube reflection texture 😃 so I tried to fix it by the new PG.

To tell the truth, I don’t have too much time to play with these things now and the lack of knowledge of some concepts also bothers me, but I will get back to this reflections stuff sooner or later. As you have noticed, I am a newbie here, so please, if you or anyone else have any suggestions I will gladly implement them, or will try to, at least.

Thanks!

EDIT: I started a new thread on the new PG here: [Building windows with inside transparency and "real" outside reflections](https://forum.babylonjs.com/t/building-windows-with-inside-transparency-and-real-outside-reflections/20243)

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