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-   -   Etched Glass (http://www.flashflashrevolution.com/vbz/showthread.php?t=113082)

darkshark 10-15-2009 03:25 AM

Etched Glass
 
This is actually a -very- hard thing to get right. This was for a client of mine who allowed me permission to post this. The etchings are a procedural bump texture with an ever so slight irradiance/opacity map to really bring out the etch lines.

HDRI lighting and caustic refraction elements were used for reflections, as well as ambient occlusive dithering, and of course, depth of field lol.


Dr Tran 10-15-2009 03:47 AM

Re: Etched Glass
 
amazing

The5thMoon 10-15-2009 03:56 AM

Re: Etched Glass
 
Really ****ing cool.

NFD 10-15-2009 04:03 AM

Re: Etched Glass
 
Is it 3D or actual. I can't tell with your stuff anymore.

Renevatia 10-15-2009 04:06 AM

Re: Etched Glass
 
You've definite gotten really far with this. I love how I find no flaws. Depth of field is on the spot on this one as well as your level of contrast.

darkshark 10-15-2009 04:08 AM

Re: Etched Glass
 
Quote:

Originally Posted by NFD (Post 3258013)
Is it 3D or actual. I can't tell with your stuff anymore.

It's 3d, you would know this if you read anything in my post rofl.
Also I don't have a very good camera, so no picture I could ever take would come out that good.

funmonkey54 10-15-2009 05:25 AM

Re: Etched Glass
 
I read your post and still thought it was real. I really cannot believe how awesome your stuff is.

Mollocephalus 10-15-2009 05:54 AM

Re: Etched Glass
 
how did i know this thread would have been darkshark's design from the front page lmao

also stunning design. congratulations.

Afrobean 10-15-2009 06:46 AM

Re: Etched Glass
 
Seems unrealistic to me just due to the amount of work that would be required to create such glasswork in the real world. You might have had a hard time rendering that thing, but imagine the work it would take to really create it.

Looks photo-real though from what I can figure. And is it just me or is there some grain or something to the image to make it look subtly more real?

darkshark 10-15-2009 07:02 AM

Re: Etched Glass
 
The grain is actually caused by the VRay rendering engine itself when using Depth of Field options, I've just learned to tune the settings a bit so there's not as much grain like there was with the cat picture.

VRay needs to clean up this issue in their next release, hopefully it's on their to-do list. And wouldn't glass etching be fairly simple? My dad has a sandblaster and I've watched him do it many times, never tried myself, though it doesn't look hard, especially if you were to stick a vinyl stencil around the cup and then quickly sandblast through the lines.

Afrobean 10-15-2009 07:45 AM

Re: Etched Glass
 
Uh... grain isn't a problem. It's a good thing when used correctly. Like I said, the grain here makes it look subtly more real. Most people probably wouldn't consciously notice it (like the depth of field), but it would still influence their thoughts about how real it looks.

Remember: a real photograph is going to have grain. Even digital shots have a similar effect in digital noise. Only rendered graphics are PERFECTLY devoid of these "impurities".

And yeah, I'm no expert on glass design, but that sort of thing is uncommon in glassware as far as I know, so I assume it's a lot more difficult than your post implies. Maybe it's just one of those things that's easy for people who know how to do it and have the tools.

Mollocephalus 10-15-2009 07:47 AM

Re: Etched Glass
 
yeah afro how is that glasswork unrealistic, people around here make this stuff all the time. darksark, you're not gonna have the same outcome as your picture shows with a sandblaster, i'm pretty sure.

also professional photographies are nearly completely devoid of graning unless the photographer wants it for stylistical purposes.

Afrobean 10-15-2009 07:58 AM

Re: Etched Glass
 
Quote:

Originally Posted by Mollocephalus (Post 3258060)
also professional photographies are nearly completely devoid of graning unless the photographer wants it for stylistical purposes.

fine grain != no grain

ps I didn't mean the glasswork is unrealistic per se, just that it's not the sort of thing that is common among glass and it would probably ironically look more real without it, even though the whole point was to show how real that unique glassworking technique is rendered here.

Mollocephalus 10-15-2009 08:09 AM

Re: Etched Glass
 
Quote:

Originally Posted by Afrobean (Post 3258063)
fine grain != no grain

unintelligible grain by human sight = no grain

NFD 10-15-2009 09:07 AM

Re: Etched Glass
 
when you say client i think of hookers

Nullifidian 10-15-2009 12:34 PM

Re: Etched Glass
 
I noticed a seam on the left glass, circles are cut off there and it's visible at the bottom too.
But other than that, it looks amazing.

Spenner 10-15-2009 05:21 PM

Re: Etched Glass
 
Very realistic render, very nice.

OnixRose 10-15-2009 05:41 PM

Re: Etched Glass
 
Everything that I've seen from you looks great but the is right glass and everything that's kind of fuzzy supposed to be out of focus as if it were an actual photo or something? or is it unfinished, low quality due to being posted on ffr, what?

I also know little to nothing about the workings of 3d art so sorry if the question is a no brainer

Mythix 10-15-2009 06:27 PM

Re: Etched Glass
 
Quote:

Originally Posted by OnixRose (Post 3258410)
Everything that I've seen from you looks great but the is right glass and everything that's kind of fuzzy supposed to be out of focus as if it were an actual photo or something? or is it unfinished, low quality due to being posted on ffr, what?

I also know little to nothing about the workings of 3d art so sorry if the question is a no brainer

It's FOV- Field of View, and DS is quite in love with grain aswell so I guess that's slightly visible... FoV makes things in distance fade out, as if you're using a extremely focused camera, only putting what you want clear, not paying attention to anything outside a certain area.


On topic: Did you unwrap the glasses? On the left glass, top slightly to the right, looks like you've used UW map on the material, prolly planar or face, since it seems it's not correctly overlapping.

Then again, that would be the case if you're looking for antiques that are completely flawless. I can't get my bumpmap to appear realistic, I can do normal glasses, as everyone else following the paytuts, but I like this.

revolutionomega 10-15-2009 06:28 PM

Re: Etched Glass
 
Really cool man keep it up!


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