topic Re: Problems rendering glass transparent in Revit Architecture Forum

Problems rendering glass transparent

stephen.melhuish — Thu, 21 May 2020 14:26:09 GMT

I appreciate there are posts that attempt to answer this problem, but I am simply at a loss to figure this out. When I view my model in 'realistic', my curtain wall glass is transparent. When I view it 'rendered' it isn't. I've tried everything. I've checked the material is transparent and reviewed previous help but without luck. I enclose images below on a pdf.

Re: Problems rendering glass transparent

hmunsell — Thu, 21 May 2020 16:17:15 GMT

what is your Glass material settings?

can you upload the model so we can look at the settings?

Re: Problems rendering glass transparent

barthbradley — Thu, 21 May 2020 17:40:49 GMT

Great Video here!

https://www.youtube.com/watch?v=RvB2fph5g3E

Re: Problems rendering glass transparent

stephen.melhuish — Thu, 21 May 2020 20:08:51 GMT

Hi J,

thanks for your offer of help. I enclose a purged and reduced model which includes the curtain wall and therefore material. Hope you - or someone can help

Re: Problems rendering glass transparent

barthbradley — Thu, 21 May 2020 20:32:34 GMT

Assign a Glass Asset to your Material. There's a boat-load of them to choose from. Just type "Glass" into Search Bar.

Ah! Here's your problem. The glazing Geometry is not associated to a Material Parameter that would allow you to assign a Project Material to it. You need to Edit Family and do this:

Re: Problems rendering glass transparent

stephen.melhuish — Thu, 21 May 2020 20:26:08 GMT

Barth. That's done. ive tried 3 different glass materials to the asset and all have the same result of a cloudy solid effect rather than transparent. As I said, it's transparent in 'realisitic' but not when rendered

Re: Problems rendering glass transparent

barthbradley — Thu, 21 May 2020 20:34:13 GMT

I added a little something to my post. All will be right as rain when you associate a Material Parameter to the glass geometry in the Family.

Have fun!

Re: Problems rendering glass transparent

stephen.melhuish — Thu, 21 May 2020 21:46:46 GMT

Afraid not Bath. Tried it. Sorry

Re: Problems rendering glass transparent

barthbradley — Thu, 21 May 2020 22:09:14 GMT

What Asset did you choose?

Maybe something got wigged out with the Material at your end. Try Creating a New Material, assign a Glass Asset to it and use that new one for your Curtain Panel glazing.

Re: Problems rendering glass transparent

barthbradley — Thu, 21 May 2020 22:54:15 GMT

Maybe turn on the lights?

All joking aside, have you tried a different Sun Setting?

😉

Re: Problems rendering glass transparent

stephen.melhuish — Fri, 22 May 2020 07:43:43 GMT

Barth, your efforts are appreciated. I've turned on internal lights. I've rendered with external sun and internal lighting. I've tried different phase filters. I have 3 types of glass with different assets. And the result is always the same.

The render you did of my model achieved transparent glass. Did you use my materials ? I've tried everything suggested now and beginning to wonder if there's something wrong with my Revit or I'm missing an update !! ??

Re: Problems rendering glass transparent

stephen.melhuish — Fri, 22 May 2020 09:35:20 GMT

Finally I have had some success. I downloaded a BIM object curtain wall with a glass titled NBS Glass which does seem very limited with it's assets (transparency, bump etc) but does seem to work. I'll continue to investigate this further and offer a conclusion to this post

Re: Problems rendering glass transparent

barthbradley — Fri, 22 May 2020 12:04:26 GMT

this is driving me fricking crazy!!! I have zero-zip-nada issues. I can't even purposely fail the render transparency. If you have tried everything I have suggested to no avail, then the issue has got to be a local one. Maybe the view or session got corrupted. Have you tried to Render Transparency in other Views/Projects? Have tried repairing, rebooting and restarting Revit. Applied latest updates yet? Maybe it's the Graphic Card? Does it meet specs? Got any third-party Add-ins? Disable them.

https://knowledge.autodesk.com/support/revit-products/learn-explore/caas/sfdcarticles/sfdcarticles/How-to-Disable-Add-Ins-for-Revit-Products.html

…...

Re: Problems rendering glass transparent

hmunsell — Fri, 22 May 2020 12:38:21 GMT

@barthbradley i was able to duplicate the issue on my end using the downloaded model.

its the material in the Wicona Panel family. the glass is not mapped to the material parameter.

edit the Panel family
- select the glass panels
  - in the properties, pick the box to the Right of the material
  - pick the Material option
- reload the panel into your model.
from there you can change the glass material as needed.

not sure where the Glass, Clear Glazing 2 & 3 came from but they are not duplicates of the Out or the Box "Glass, Clear Glazing". Duplicate the "Glass, Clear Glazing" material and adjust as needed.

Re: Problems rendering glass transparent

georgehobel — Fri, 22 May 2020 13:30:02 GMT

there are lots of us who have local issues...

Re: Problems rendering glass transparent

barthbradley — Fri, 22 May 2020 16:59:57 GMT

@hmunsell: We are both singing from the same hymn sheet. See my sentence in Message #3 that starts off with "AH!...", and see Message #7 in which I emphasize what I said in Message #3.

Re: Problems rendering glass transparent

hmunsell — Fri, 22 May 2020 17:14:29 GMT

As Usual, you are correct sir 🙂 i saw the downloaded file and just started playing with it. i did watch that video though, good stuff...

@stephen.melhuish do what Barth said... i did pretty much the same thing and it worked fine for me too. only difference is i didn't add the glass asset to Your material, i duplicated the existing "Glass, Clear Glazing" material.

Re: Problems rendering glass transparent

barthbradley — Fri, 22 May 2020 17:15:34 GMT

@georgehobel wrote:
there are lots of us who have local issues...

Sorry to hear, buddy. Happens to a lot of guys. I'm told it is actually quite common and nothing to be embarrassed about.

😉

Re: Problems rendering glass transparent

georgehobel — Thu, 28 May 2020 13:32:43 GMT

Dude... I was talking about my mouse!