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Dribble tests and renders
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Dribble tests and renders // Roundtable
Post by splinters // Oct 10, 2007, 4:37am
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splinters
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Okay, seemed like it deserved it's own thread.
First an attempt at SSS which looks like a fireball. Secondly, attempts at recreating milk end up with a ball of rice pudding...:D |
Post by 3dfrog // Oct 10, 2007, 6:06am
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How did you get that sss? can you share some settings? I can't get it. |
Post by SiW // Oct 10, 2007, 7:18am
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lol, I love that rice pudding, it looks quite convincing!
I'll start work on the SSS-specific shader, it'll work in a similar way (but NOT match) the V-Ray shader. This will allow you to experiment with different "models" of subsurface scattering. The current state is that you're always working with a vaguely marble-like model, which is one reason you're having to unrealistically blow out the lights. |
Post by splinters // Oct 10, 2007, 11:54am
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splinters
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How did you get that sss? can you share some settings? I can't get it.
Translucent plastic shader, any bump if you want displacement but keep amp low (about 0.1) put a local light behind and turn intensity up to about 4.0.
Set diffusion high and translucency to around 5. Voila...:D |
Post by splinters // Oct 10, 2007, 11:55am
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lol, I love that rice pudding, it looks quite convincing!
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I will start posting any interesting materials I come up with, surely no-one can beat rice pudding for surreal...:D
Maybe time to collate a material library for dribble..I am happy to help you with that SIW. |
Post by Jack Edwards // Oct 10, 2007, 11:58am
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Nice results, Splinters. The SSS is looking good :) |
Post by Burnart // Oct 10, 2007, 1:01pm
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In answer to splinters challenge from the dribble first impressions thread - I did a render using some brick columns with the initial dribble release: 24 seconds. I then uninstalled dribble. Installed the new version restarted the computerr and re-rendered with the same dribble settings: 95 seconds. However because of changes to displacement, the objects were massively and strangely swollen so I tweaked down the settings from an amp of 1 to .1 and re-rendered: 37 seconds. The displacement settings may still be slightly more exaggerated compared to the original - I'm not sure.
I'm more concerned about the way area lights still work. On the left of the attached image we see the render (the improved gi/occlusion rendering is very nice) on the right we see a screen capture of the tS display and its all blown out because the area lights settings include an intensity of 50 and no fall-off. Why can't there be a setting on dribble's lights tab under the area lights sample controlling area lights intensity from there? That way we can have our normal area lights setting in our working screen and ramp it up for the render within dribble itself. |
Post by splinters // Oct 10, 2007, 1:08pm
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splinters
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Couldn't resist playing with that rice pudding texture a little more. I hope to mess with this until it is photorealistic and a showcase of what Dribble can do...:D |
Post by splinters // Oct 11, 2007, 6:44am
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splinters
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I just love rice pudding...:D |
Post by splinters // Oct 11, 2007, 7:43am
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splinters
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In my mission to explore Dribble and test out it's feature set I am trying for my own holy grail of SSS; realistic milk.
looks like Dribble might be a contender if my milky rice pudding is anything to go by.
For speed I wondered if anyone had a high quality glass with liquid model they could share so I can mess with lighting and shader settings. Credit will be given to you in the event of any publication of said image.
I just ned to mess with the render rather than trying to make a great mesh too.
Can anyone help? |
Post by SiW // Oct 11, 2007, 8:17am
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Skim, whole, or latex paint?
http://www.coolpowers.com/lab/data/skim_whole_diffuse.jpg |
Post by splinters // Oct 11, 2007, 8:35am
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splinters
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Aside from the dodgy colour the left one is just about there...:D
Got the glass for me Simon? |
Post by prodigy // Oct 11, 2007, 8:42am
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Wow Siw! You made that picture?? the left glass looks cool!! i try to create something like that months ago with vray without a good result.. That SSS looks convincent! :) |
Post by splinters // Oct 11, 2007, 9:02am
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splinters
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Not sure if the DOF helps here but I'm still messing...;)
EDIT: by the way Simon, this took well over an hour to render at 640x40 adaptive AA and no GI, just the HDRI and one local light. Am I doing something wrong or is that about right?
Vray took less than 20 seconds....with GI on...:o
I know Dribble is much much cheaper and Vray does not do displacement mapping but that is some difference... |
Post by SiW // Oct 11, 2007, 10:58am
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That does seem slow, though the result is quite pretty :) What sort of numbers are you throwing at it - samples and so on? And what's your raytrace depth in tS? It defaults to 10/11 - try knocking it down to 2 and see if that changes dribble render time.
Re: the milk, it's not my scene, it's actually an example scene that comes with AIR. I tweaked the settings to get it render with 3Delight. So it's a command line render, not through dribble, but the 1.02 changes make it perfectly possible to duplicate. I need to make some UI code changes (and I haven't touched that code for years!) to better handle the finicky small values you typically work with though before I can put up a tS render. |
Post by splinters // Oct 11, 2007, 12:26pm
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All default settings Simon, I had enviro exposure at 0.2 and intensity at 0.15, otherwise I changed nothing. I can upload the scene but of course you will not have the HDRI image and all the settings are reset in dribble when I reload the scene...:(
Hitting Esc to stop renders causes my machine to freeze for around a minute and Windows tells me it has stopped working...at least once tonight it has ben right...:(:( Same happens when I first hit the render button...
I know it is not my machine alone as LW and VRay are very fast...but I suspect Vista might be to blame too...:( |
Post by splinters // Oct 11, 2007, 12:38pm
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And what's your raytrace depth in tS? It defaults to 10/11 - try knocking it down to 2 and see if that changes dribble render time.
Knocking the Raytrace depth down worked noticably but still long render times...cheers for the tip though...:)
Shame that HDRI and DOF settings aren't stored with the scene...makes it kinda hard to re-render again without it being different. |
Post by trebs // Oct 13, 2007, 6:57am
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ha, love that rice pudding effect :)
This progress is good to see to. I likey. |
Post by SiW // Oct 13, 2007, 7:03am
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Now that I have separate builds for older versions of trueSpace anyway, there's no real reason why I can't make use of the newer API functionality and store settings with the scene. It's just a matter of re-coding. |
Post by splinters // Oct 13, 2007, 11:53am
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splinters
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Now that is good news...and my PC is fixed so maybe I can mess some more tomorrow...:D |
Post by splinters // Oct 15, 2007, 1:19am
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So I did....mess that is...:rolleyes:
This is weird. Took earlier SSS experiment and actually placed the light inside the sphere which is solid, not a shell...a suprising but not unpleasant outcome methinks...especially for a nice combustion or lava effect...:D |
Post by Steinie // Oct 15, 2007, 1:32am
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Splinters, your discovery to find interesting materials is working, I would call your latest "molten metal":) |
Post by splinters // Oct 15, 2007, 2:10am
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splinters
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Well put Steinie, and on that note this is dedicated to you...:D
Next.....Mushy Peas...:D |
Post by 3dfrog // Oct 15, 2007, 4:34am
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that is wicked cool. I havent been able to reproduce this kind of result myself. I gotta wait for the shader for dummies like me ;) |
Post by splinters // Oct 15, 2007, 5:15am
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splinters
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Not a problem Mr. Frog, render this scene in dribble (no extra settings) then mess with it to get the fire effect...:D |
Post by splinters // Oct 15, 2007, 5:23am
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splinters
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Anyone got any pies while we wait... |
Post by 3dfrog // Oct 15, 2007, 5:25am
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Bewy Bewy Nice. Thank you.
That is some thick pea soup. |
Post by jayr // Oct 15, 2007, 7:45am
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If you're mussy peas and pies you have to do gravy, it's the law :D |
Post by splinters // Oct 15, 2007, 11:24am
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Dont forget the chips too...;) |
Post by rj0 // Oct 15, 2007, 11:36am
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Guacamole dip?
rj |
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