This is an image I rendered as a material study for trying to achieve realistic raindrops on a glass surface. I wanted to use the Liquid material to take advantage of the realism offered by the combination of Refraction Index/Refraction Index Outside, for the water on glass. Since the Liquid material cannot be layered (applied as a label) over other materials, I took a reverse approach and layered an Advanced material with an opacity map (for the glass face) over a Liquid material (for the raindrops), using a combination of a normal map and procedural textures for the drops/streaks. Post production color grading done in Photoshop.
Cheers,
Eric
Amazing! I'm going to study this for quite a while, with my thanks!
Bill G
Quote from: Speedster on February 05, 2017, 12:29:31 PM
Amazing! I'm going to study this for quite a while, with my thanks!
Bill G
Thanks very much, Bill! Nice to hear from you, and...you're welcome! Any questions, feel free to ask :)
Cheers,
Eric
That's pretty impressive - Have you tested it with a beer bottle cliche scene ?
Martin
Clever trick as always, Eric!
However, I can't grasp how the 'surface backside mask' and 'color to number' is altering the bump height. Can you elaborate on what is happening there?
So, this trick doesn't work for water on opaque surfaces. Do you have a trick for that? 8) My best approach so far has been to do a duplicate of the model, scale it slightly and apply the water surface to the copy - which I don't think is optimal.
I love the results here! Great study.
Quote from: TpwUK on February 05, 2017, 02:57:07 PM
That's pretty impressive - Have you tested it with a beer bottle cliche scene ?
Martin
Thank you, Martin! I haven't yet tested it on a "beer bottle cliche", but I plan to.
Cheers,
Eric
Quote from: Esben Oxholm on February 05, 2017, 11:27:35 PM
Clever trick as always, Eric!
However, I can't grasp how the 'surface backside mask' and 'color to number' is altering the bump height. Can you elaborate on what is happening there?
So, this trick doesn't work for water on opaque surfaces. Do you have a trick for that? 8) My best approach so far has been to do a duplicate of the model, scale it slightly and apply the water surface to the copy - which I don't think is optimal.
Thanks very much, Esben! The Surface Backside Mask > Color To Number is controlling the bump height as seen from the front or back of the glass, with the "Output To" and "Output From" parameters (-.5, .5), reversing the bump direction when the glass is viewed from the other side (for instance as if looking from a window indoors, with raindrops on the outside), to hopefully enhance the illusion of the drops being on the outside surface of the glass and not look like they're inside the glass surface. I hope that makes sense...just one of my crazy detail ideas :)
I've been working on an opaque surface method, but don't know that I'll be able to come up with anything better than your current method of offsetting the water surface.
Cheers,
Eric
Quote from: Will Gibbons on February 06, 2017, 07:28:29 AM
I love the results here! Great study.
Thanks very much, Will! I appreciate the kind words :)
Cheers,
Eric
Really, really cool Eric... quite a unique and may I add, successful approach to achieve the effect.
Quote from: Despot on February 07, 2017, 07:06:34 AM
Really, really cool Eric... quite a unique and may I add, successful approach to achieve the effect.
John! Good to hear from you, man! Thanks very much for the kind words :)
Cheers,
Eric
LOVE IT. This looks great Eric.
Quote from: Josh Mings on February 08, 2017, 08:13:26 AM
LOVE IT. This looks great Eric.
Thank you, Josh! Much appreciated :)
Cheers,
Eric
Another great study Eric!
Thanks for sharing with us man!
Great use of the material graph!
I'll have to give it a try, when there will be some time to study.
Is the glas part one solid piece or splitted into front, back and side walls?
Quote from: Hossein Alfideh on February 13, 2017, 08:07:54 AM
Another great study Eric!
Thanks for sharing with us man!
Thanks, Hossein! Much appreciated :)
Cheers,
Eric
Quote from: LayC42 on February 13, 2017, 11:08:44 AM
Great use of the material graph!
I'll have to give it a try, when there will be some time to study.
Is the glas part one solid piece or splitted into front, back and side walls?
Thanks very much, Marco! The glass is split into two pieces: the front face with the raindrops, and the back/sides.
Cheers,
Eric