cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Showing results for 
Search instead for 
Did you mean: 
Document & Visualize forum

Cinerender alpha channel in front of transparant surface

Does anyone know if there is a fix for this issue?

 

I've gone over a lot of settings, but can't seem to find one that fixes it.

 

If I have images with an alpha channel, they render just fine in front of surfaces without transparancy, but in front of glass they get white edges/borders.

 

It's not the end of the world, but I would like to get rid of it, if possible.

B959_exterieur_220720.jpg

Erwin Edel, Project Lead, Leloup Architecten
www.leloup.nl

ArchiCAD 9-24 NED FULL
Windows 10 Pro
Adobe Design Premium CS5
5 REPLIES 5

DGSketcher
Rockstar

@Erwin Edel the white on the glass looks to be more of an attempt at reflection rather than white borders. Perhaps a new glass with a lower reflectance value might improve the image?

Apple iMac macOS Monterey / AC26UKI (most recent builds)

I've tried all the different 'normal' glass surfaces from the catalogue and different type of alpha channel transparancy images. They all give a similar result.

Erwin Edel, Project Lead, Leloup Architecten
www.leloup.nl

ArchiCAD 9-24 NED FULL
Windows 10 Pro
Adobe Design Premium CS5

Small update. It does seem to be issue where the surface behind the glass is rendered without shadows, reflection etc

 

A few quick tests I did:

 

ErwinEdel_0-1658905814344.png

no walls behind the glass, no problem

 

ErwinEdel_1-1658905836087.png

a white wall with ceiling for shadow, you get the white spots again

 

ErwinEdel_2-1658905860551.png

I made the wall blue, now the spots are blue

Erwin Edel, Project Lead, Leloup Architecten
www.leloup.nl

ArchiCAD 9-24 NED FULL
Windows 10 Pro
Adobe Design Premium CS5

DGSketcher
Rockstar

Random suggestion of the day: I assume you are just using sunlight, what happens if you add a general light within the room still with the sunlight?

Apple iMac macOS Monterey / AC26UKI (most recent builds)

With some generic interior light and sun:

ErwinEdel_0-1658908345491.png

 

Without sun and only that generic light:

ErwinEdel_1-1658908367900.png

 

So sunlight does seem part of the problem.

Erwin Edel, Project Lead, Leloup Architecten
www.leloup.nl

ArchiCAD 9-24 NED FULL
Windows 10 Pro
Adobe Design Premium CS5

Start a new conversation!

Labels

Still looking?

Browse more topics

Back to forum

See latest solutions

Accepted solutions

Start a new discussion!