Glass not reflective without high amounts of refraction?

[Zoddo]

How can I have reflectiosn on thin glass without bumping up the IOR of my glass shader?

I am using the Glass BSDF in combination with transparent bsdf.

With IOR set to 1.0

With IOR set to 1.4

Even setting the IOR to something like 1.1 doesn’t help.
I just want reflectivity on my glass without any refraction because my glass is so thin (1cm), so it doesn’t really refract anything behind it.

I’ve been struggling a lot with glass in Blender so some help would be nice.

[Okidoki]

More reflections → more lightbounces to compute… Different glass does have specific IOR (see BlenderBaseCamp …ior-of-glass… … so more like 1.4…) if you do use plenty of glass you might wanna look into *Render Properties → Sampling → LightPath → Max Bounces… * instead of changing the type (via IOR) of your glass . Making good glass (and especially architectural glass) is one of the most disccussed subjects out there (and here on BA… you may try do use the search function… top right… or whatever serch engine you like)… There are not only material experts but also special glass experts…

[Hikmet (Hikmet Koyuncu)]

Then you must make your own glass shader setup. You can use VSHADE.

VSHADE can separate Reflection and Refraction layers and you can use different IOR values.

[moony]

You don’t need to use refraction for thin glass panels.

Just use a transparent/glossy mix with the Fresnel or facing node in the fac slot.

[CarlG]

Use this for thin glass:

The level of reflection created is close enough to real fresnel - nobody will notice - and you don’t have to deal with backfacing faces and inverted IOR stuff. In addition you get fresnel like shadows without any extra cost/complexity.

I do a lot of office spaces myself, which sometimes calls for frosted glass or smart glass. Only on occasion do I need solid opened glass doors that does (well, may) need solid geometry, in which case solid panes may be desired just to produce the same look as the open door. So my real glass setup is quite a bit more complex in order to handle “all” considerations.

[Zoddo]

Thanks, i’ve tried searching in google/duckduckgo but i only get results for removing reflection from glass…

so I try to get help for my specific problem.

thanks for the link, i looked at it and it’s helpful!

[Zoddo]

Thanks, i copied your shader and it seems to work perfectly;