advice required - frosted glass banner

rfollett · February 01, 2018, 11:11:12 AM

please see attached.. I guess a label?
Will be a large office so I could just split the geometry on the glass panels (glass top, frost middle, glass bottom)
working with rhino

Will Gibbons · February 01, 2018, 05:49:09 PM

I'd just use a roughness texture made from a procedural texture. Example scene attached.

rfollett · February 02, 2018, 12:56:20 AM

Hi Will,
many thanks, that works very well and easy to move banner up and down..
One question, I see i can change the colour to make frost darker, can I make frost less rough so you can see more outline of the object behind?

http://prntscr.com/i91bxy

many thanks

Will Gibbons · February 02, 2018, 09:52:28 AM

The color is driving the roughness parameter. Black = 0 and White = 1. Roughness of 0 is glossy, Roughness of 1 is very rough.

So, if you want to make the frosted part rougher, make the gray part of the gradient lighter (more white, closer to 1). If you want the frosted part smoother, then make the gray part darker (closer to black, closer to 0).

Does that make sense? The color is not changing. If you want to change the color of the frosted part (which does not make sense for a frosted glass), you would need to duplicate the color gradient and plug it into the diffuse channel and adjust it accordingly.

rfollett · February 08, 2018, 07:18:03 AM

Thanks for your help Will.
If I wanted to do something like this:
http://prntscr.com/ibxa40
is there an easy way? so remove frost to create logo

rfollett · February 08, 2018, 07:27:58 AM

http://prntscr.com/ibxgo3

Will Gibbons · February 08, 2018, 11:57:13 AM

Sure.

Have your logo (black on white with transparency) and use a color composite and set blending mode to multiply.

rfollett · February 08, 2018, 12:26:43 PM

Thanks Will - sorted...so many options now... never know where to start..

http://prntscr.com/ic248u

rfollett · February 11, 2018, 02:39:47 AM

here is the end result - thanks for your help

Will Gibbons · February 13, 2018, 08:55:59 AM

Looks good! I might increase the exposure (in post) just a tiny bit to give it a more typical architectural feeling to it.

toasty1435 · August 10, 2018, 08:33:15 AM

Question on this one, how did you keep the label from reflecting on the back of the glass or casting a shadow behind itself on the glass?

Thanks!

Will Gibbons · August 10, 2018, 01:20:15 PM

Quote from: toasty1435 on August 10, 2018, 08:33:15 AM
Question on this one, how did you keep the label from reflecting on the back of the glass or casting a shadow behind itself on the glass?

Thanks!

You might have luck with unchecking the box 'two-sided' or using center on part mode and adjusting the depth to be very small. If neither of those work for you, you can apply an occlusion texture to the opacity channel of the label and I believe you may need to invert its default settings.

The above should help you out.