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Bryce F.A.Q (Last Updated: 2025 Jan 04 3:16 am)

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Subject: WIP Question


Apache2k ( ) posted Sun, 29 September 2002 at 6:47 AM · edited Mon, 13 January 2025 at 2:44 AM

Attached Link: http://members.tripod.co.uk/apachedesign

file_25412.jpg

Any comments? Had some problems with the glass the material isnt as i was thinking.. Rendering took 12 hour on a P4 2GHz :)). Does anyone know any good glass tutorials? thanks..


SAMS3D ( ) posted Sun, 29 September 2002 at 6:53 AM

Hey this is great...Sharen


cybrbeast ( ) posted Sun, 29 September 2002 at 7:04 AM

That's sooo realistic. Beautiful! Can't help ya with the glass


Rayraz ( ) posted Sun, 29 September 2002 at 11:35 AM

Don't know of a tutorial, but standard glass has a refraction-index of 1.58 (Setting in bryce=158). Crystal glass has a higher refraction setting. You can play with the specular settings, to get bright highlights. How many lights are placed at the exact top of the light-dome? if you have only one light there make sure it gives (much) more light than the other lights in the dome. otherwise your specularity get's to dim and blurry to give the glass a nice shiny effect. I'll make a small test-render if I have time to show you what I mean exactly.

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Apache2k ( ) posted Sun, 29 September 2002 at 11:51 AM

On the top of the dome i have 10 lights and total of 800 lights. but it still looks like dirty or very old cheap glass :) .. Ill try that refraction-index. thanks..


madmax_br5 ( ) posted Sun, 29 September 2002 at 3:11 PM

Attached Link: http://www.renderring.com/hdri/indoormaps.html

AHHHHHHH! 800 lights!!!!! you do not need these! Make sure to turn TIR in the render options. You also need to stick a huge hollow sphere around your scene with a good looking picture applied...this will greatly help the look and reflections of the glass...but don't even try it with a light dome. The link takes you to some pictures that will look good when put on the sphere. The above image Was a quick test. Glass material is 75% transparent, 40% reflective, 210 refraction. It looks better on a good glass like yours..mine sucks..lol


Apache2k ( ) posted Sun, 29 September 2002 at 3:53 PM

ummm, ok... this one is also in a sphere but the image wasnt the best.. so with this system how can i get the shadows like real? If i dont use the light dome?


madmax_br5 ( ) posted Sun, 29 September 2002 at 5:01 PM

Make around 20 radial lights and cluster them around your scene, give them a fairly low intensity and no cast shadows. Then make one conical light and place it so that it is big enough to cover the whole area you want and enable shadows. Then render with soft shadows.


SevenOfEleven ( ) posted Sun, 29 September 2002 at 5:32 PM

Can you post the final result here? I would like to see it.


EricofSD ( ) posted Sun, 29 September 2002 at 7:38 PM

Play with your glass textures. The diamond one is the best but also one of the longest to render. The simple glass is the fastest.


cshaftoe ( ) posted Sun, 29 September 2002 at 8:59 PM

Mercury? Quicksilver? Now there's a reflective substance.....How about mercury leaking from a thermometer? Regards The Bryster


AgentSmith ( ) posted Sun, 29 September 2002 at 9:42 PM

Wow....uh, I'm sure that array of 800 lights looks impressive, but (and, no offense) it seems to be a little overkill. Lighting arrays are more to simulate GI (Global Illumination) and that can be done with anywhere from 20-60 lights. And, since you have Bryce 5, if you want, turn the soft shadows on just a little bit on those lights(25%). This is if you are wanting to simulate soft shadows. 40 lights with a small amount of soft shadow, would probably render faster than 800 lights. Glass is tricky, it takes a bit of experiment with increasing the TIR and refraction. AgentSmith

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EricofSD ( ) posted Sun, 29 September 2002 at 11:05 PM

One thing I do to reduce the number of lights is to elongate them. If I can get one radial which is elongated to do the job of 5, I do it. Fewer lights in your case is better.


Apache2k ( ) posted Mon, 30 September 2002 at 3:11 AM

Ok, thanks for those information.. I did use soo much light cos i dont know what is the bast amount.. looks like i have to learn much about lights.. ill try to do a new version,, hope the rendering time wont be as much as the first one.. thanks again..


AgentSmith ( ) posted Mon, 30 September 2002 at 3:21 AM

file_25413.jpg

This setup uses "e" (bottom pic on madmax_br5's page). It has only 8 lights and rendered on an AMD Athlon XP 1.5ghz in 90 minutes, and (lol) in only 9 minutes after removing that flat glass covering the wood. Just keep experimenting.

Contact Me | Gallery | Freestuff | IMDB Credits | Personal Site
"I want to be what I was when I wanted to be what I am now"


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