Problems rendering glass transparent

[stephen.melhuish]

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.

[hmunsell]

what is your Glass material settings?

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

[barthbradley]

Great Video here!  

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

[stephen.melhuish]

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

[barthbradley]

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:

[stephen.melhuish]

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

[barthbradley]

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! 

[stephen.melhuish]

Afraid not Bath. Tried it. Sorry

[barthbradley]

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.   

[barthbradley]

Maybe turn on the lights?  

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

😉

[stephen.melhuish]

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 !! ??

[stephen.melhuish]

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

[barthbradley]

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/H...

…...

[hmunsell]

@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.

 

[georgehobel]

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

[barthbradley]

@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.       

[hmunsell]

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.

[barthbradley]

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@georgehobel wrote:

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

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

😉

[georgehobel]

Dude... I was talking about my mouse!