<br>
To accelerate any glossy reflection involved in your shader I strongly sugg=
est to use Arch-mat shader and add it to the SSS shader.<br>
Have a look to MasterZap blog for that.<br>
<br>
<br>
<br>
<br>
Harry Bardak<br>
TD / Compositor.<br>
<a href=3D"Http://www.From owner-xsi(at)Softimage.COM Wed May 28 23:14:32 2008
Return-Path: <owner-xsi(at)Softimage.COM>
Received: from softgate1.softimage.com (SoftGate1.Softimage.COM [198.168.8.130])
by zeus.itg.uiuc.edu (8.13.1/8.13.1) with ESMTP id m4T4EVnL007081
(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO)
for <softmail(at)hera.itg.uiuc.edu>; Wed, 28 May 2008 23:14:32 -0500
Received: from paperboy.global.avidww.com (IDENT:U2FsdGVkX18Z/B+MzowlcVmU133e8PNy/+0S+lvqZ5w(at)localhost.localdomain [127.0.0.1])
by softgate1.softimage.com (8.12.11/8.12.1) with ESMTP id m4T3WqmS017941;
Wed, 28 May 2008 23:32:52 -0400
Received: from paperboy.global.avidww.com (localhost.localdomain [127.0.0.1])
by paperboy.global.avidww.com (8.12.9/8.12.6) with ESMTP id m4T3uj4w018470;
Wed, 28 May 2008 23:56:45 -0400
Received: (from majordom(at)localhost)
by paperboy.global.avidww.com (8.12.9/8.12.9/Submit) id m4T3ujdR018469;
Wed, 28 May 2008 23:56:45 -0400
X-Authentication-Warning: paperboy.global.avidww.com: majordom set sender to owner-xsi(at)Softimage.COM using -f
Received: from softgate1.softimage.com (roundrobin.global.avidww.com [172.24.33.30])
by paperboy.global.avidww.com (8.12.9/8.12.6) with SMTP id m4T3uj4w018466
for <XSI(at)softimage.com>; Wed, 28 May 2008 23:56:45 -0400
Received: from psmtp.com (IDENT:U2FsdGVkX194MBk0JsLvUQ8fXCFlUX+E4bZBybEbNXY(at)localhost.localdomain [127.0.0.1])
by softgate1.softimage.com (8.12.11/8.12.1) with SMTP id m4T3VMuk017899
for <XSI(at)softimage.com>; Wed, 28 May 2008 23:31:22 -0400
Received: from source ([209.85.198.250]) by exprod5mx241.postini.com ([64.18.4.10]) with SMTP;
Wed, 28 May 2008 22:56:44 CDT
Received: by rv-out-0708.google.com with SMTP id f25so3368942rvb.14
for <XSI(at)softimage.com>; Wed, 28 May 2008 20:56:44 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=gmail.com; s=gamma;
h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references;
bh=qte5+LO6df1+bakthSB1AgUnEPXO+LdoupQLVGNGF+8=;
b=xkdnmej/ivFLHXqwhA8qMC/ug5SigEJbO1RzC2DY7kxHBzB9eF5moKtIZqumWiu/vhiq8ayuzARgktaWq4qhtoIARirgjcw9NfZMTEClTzYJNWt2GWMQiG7DWU818oHZ1+Yl6iHg/P5FzsAIUrdqel+JPilSa9fnyB/42d/qSK8=
DomainKey-Signature: a=rsa-sha1; c=nofws;
d=gmail.com; s=gamma;
h=message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references;
b=doS9H57GJ/5WI0CWDLwhS1jDCnZYA0aFEDbGuoKNxU4C23x36L15HreGdH2ReXRzGjLL7HE8ilQ2yQrwADw3fmBwlHz5xPG5S9d9pGAg+akTPyp3n+mZDoLrCvdf8a46JE0IYaMhzae0OyWZIP0NwdEapwXfCSQSoRcxzfbkQdA=
Received: by 10.140.126.14 with SMTP id y14mr1781402rvc.59.1212033403623;
Wed, 28 May 2008 20:56:43 -0700 (PDT)
Received: by 10.141.177.19 with HTTP; Wed, 28 May 2008 20:56:43 -0700 (PDT)
Message-ID: <143a9f860805282056j123f8310s537f42b0d05db624(at)mail.gmail.com>
Date: Wed, 28 May 2008 23:56:43 -0400
From: "Kris Rivel" <krisrivel(at)gmail.com>
To: XSI(at)Softimage.COM
Subject: Re: 3dlight - FryRender - anyone using them?
In-Reply-To: <6EB652BF05BEE44FA2A29B23F3A715280E3D5AB0(at)UBIMAIL1.ubisoft.org>
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="----=_Part_25550_8097116.1212033403618"
References: <6EB652BF05BEE44FA2A29B23F3A715280E3D5AB0(at)UBIMAIL1.ubisoft.org>
X-pstn-neptune: 0/0/0.00/0
X-pstn-levels: (S:99.90000/99.90000 CV:99.0000 R:95.9108 P:95.9108 M:97.0282 C:98.6951 )
X-pstn-settings: 2 (0.5000:0.5000) s cv gt3 gt2 gt1 r p m c
X-pstn-addresses: from <krisrivel(at)gmail.com> [db-null]
Sender: owner-xsi(at)Softimage.COM
Precedence: bulk
Reply-To: XSI(at)Softimage.COM
X-Loop: XSI(at)Softimage.COM
------=_Part_25550_8097116.1212033403618
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
3Delight is pretty awesome but I imagine that many smaller pipelines getting
by with MR won't want to pay the extra fees for another renderer unless it
proved to be massively faster ( which it may be to some degree :-) I'm
looking forward to what Vray and/or Final Render might be able to
contribute.
Kris
On Wed, May 28, 2008 at 12:26 PM, Marc-Andre Carbonneau <
marc-andre.carbonneau(at)ubisoft.com> wrote:
> Hi all,
>
>
>
> Was just wondering, everyone seemed SOOO happy when 3Dlight came out, did
> anyone made the switch? How do you like it? How did the transition worked
> out?
>
>
>
> Also, FryRender came out with another update yesterday. Anyone tried that
> one?
>
>
>
> *MAC*
>
>
>
------=_Part_25550_8097116.1212033403618
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
3Delight is pretty awesome but I imagine that many smaller pipelines getting by with MR won't want to pay the extra fees for another renderer unless it proved to be massively faster ( which it may be to some degree :-) I'm looking forward to what Vray and/or Final Render might be able to contribute.<br>
<br>Kris<br><br><div class="gmail_quote">On Wed, May 28, 2008 at 12:26 PM, Marc-Andre Carbonneau <<a href="mailto:marc-andre.carbonneau(at)ubisoft.com">marc-andre.carbonneau(at)ubisoft.com</a>> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div link="blue" vlink="purple" lang="EN-US">
<div>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">Hi all,</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> </span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">Was just wondering, everyone seemed SOOO happy when 3Dlight
came out, did anyone made the switch? How do you like it? How did the
transition worked out?</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> </span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">Also, FryRender came out with another update yesterday. Anyone
tried that one?</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> </span></font></p>
<p><b><b><font color="#004080" face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana; color: rgb(0, 64, 128);" lang="FR">MAC</span></font></b></b></p>
<p><font face="Times New Roman" size="3"><span style="font-size: 12pt;"> </span></font></p>
</div>
</div>
</blockquote></div>
------=_Part_25550_8097116.1212033403618--
---
Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in body:
unsubscribe xsi
harrybardak.co.uk/" target=3D"_blank">Http://www.harr=
ybardak.co.uk/</a><br>
<br>
+44 781 661 4147<br>
<br>
----------------------------------------<br>
<blockquote class=3D"gmail_quote" style=3D"border-left: 1px solid rgb(204, =
204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
From: <a href=3D"mailto:peter_b(at)skynet.be" target=3D"_blank">peter_b(at)skynet=
.be</a><br>
To: XSI(at)Softimage.COM<br>
Subject: Re: rendermap / lightmap SSS shader<br>
Date: Wed, 28 May 2008 11:03:52 +0200<br>
<br>
You can bake illumination with regular rendermap too - looks much better to=
<br>
me - with the bump and geometric detail and displacement. You're loosin=
g<br>
most of that with vertexmap.<br>
And with the density of meshes I had it was crashing all the time.<br>
For a human face I'm down to 3-4 maps as is - and the comped results ar=
e<br>
fine. For full body it can be 8 or so and for quadrupeds 10 and upwards.<br=
>
With a lightmap working in UVspace this would be one single rendermap -<br>
doenst seem all that far fetched to me.<br>
<br>
<br>
<br>
----- Original Message ----- From: "Andreas Bystrom"<br>
To:<br>
Sent: Tuesday, May 27, 2008 11:09 PM<br>
Subject: Re: rendermap / lightmap SSS shader<br>
<br>
<br>
you can also try baking the illumination into a vertexmap, and then<br>
"comp" the textures on top of that.<br>
<br>
if you need lots of detail you can subdivide the mesh a bit. I found<br>
this method to be working rather well, I still had to rendermap from<br>
3-4 different camea-locations but it was much easier to get nice<br>
smooth results compared to rendermapping into textures.<br>
<br>
<br>
On Tue, May 27, 2008 at 9:07 PM, peter boeykens wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"border-left: 1px solid rgb(204, =
204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Thanks for the link.<br>
<br>
I am doing multiple rendermaps with the camera in different positions, and<=
br>
recombining them - this gives me a fairly good result.<br>
<br>
It's just a lot of work - mostly because of the very slow rendering tim=
es<br>
and instability of rendermap.<br>
A 2k rendermap is 1.5 hours on average on the stuff I'm working on -<br=
>
regular<br>
2k renders are less than 15 minutes. I'm scripting overnight renders of=
<br>
several rendermaps which helps out a lot - but one night out of two<br>
rendermap either crashes, freezes or simply disappears.<br>
<br>
...<br>
<br>
<br>
----- Original Message ----- From: "Halfdan Ingvarsson"<br>
<br>
To:<br>
Sent: Tuesday, May 27, 2008 5:06 PM<br>
Subject: RE: rendermap / lightmap SSS shader<br>
<br>
<br>
It's not complicated what it does. It's basically a trick they used=
on<br>
Finding Nemo, described in some Siggraph notes, but using the camera's<=
br>
pov,<br>
rather than the light's pov. (see:<br>
<a href=3D"http://graphics.stanford.edu/facecourse/facecloning05/Presentati=
ons/scat.pdf" target=3D"_blank">http://graphics.stanford.edu/facecourse/fac=
ecloning05/Presentations/scat.pdf</a><br>
)<br>
<br>
The lightmap contains the interleaved illumination of the front and back<br=
>
surfaces (+depth of back) as seen from the camera, then the fast_sss<br>
shader<br>
simply blurs the image samples based on distance, for each sample lookup.<b=
r>
This is why this trick won't work in a wraparound mode. If you froze th=
e<br>
lightmap and then orbited, the SSS effect would look quite funky where you<=
br>
were viewing perpendicular to what the original camera's sampling posit=
ion<br>
was.<br>
<br>
The only decent way to do it would be something along the lines of what<br>
Alan<br>
describes.<br>
<br>
- =BD<br>
<br>
-----Original Message-----<br>
From: owner-xsi(at)Softimage.COM [mailto:<a href=3D"mailto:owner-xsi(at)Softimage=
.COM" target=3D"_blank">owner-xsi(at)Softimage.COM</a>] On Behalf<br>
Of<br>
Alan Jones<br>
Sent: 27-May-2008 10:55<br>
To: XSI(at)Softimage.COM<br>
Subject: Re: rendermap / lightmap SSS shader<br>
<br>
On Tue, May 27, 2008 at 3:20 PM, peter boeykens wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"border-left: 1px solid rgb(204, =
204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>
For "unsupporting" SSS - this seems lame - as it wouldn't tak=
e all<br>
that much to get it to work.<br>
The downfall is with the lightmap being camera dependent.<br>
I dont think that's a limitation of lightmaps - as color sampler<br>
lightmap is working with UV space.<br>
</blockquote>
<br>
The fast SSS shaders don't do anything akin to an ordinary lightmap in =
UV<br>
space.<br>
They use lots of strange trickery behind the scenes to do their work and<br=
>
Zap<br>
is very tight lipped on their secret sauce used. Don't forget that Half=
y<br>
is<br>
an exceptionally intelligent guy, if there was something on his end he<br>
could<br>
do to resolve this it would already be done.<br>
<br>
There's nothing stopping you from writing/employing someone to write yo=
ur<br>
own SSS shader which could achieve similar speed using lightmaps by doing<b=
r>
some nice trickery to store to a kdtree/bih instead of a UV space texutre<b=
r>
and then looking that up within the main shader. It'd be nice and fast =
and<br>
you'd avoid the camera dependency that makes fast SSS so unhappy.<br>
<br>
Though if you use SSS a lot grab a copy of 3Delight - their SSS is<br>
absolutely gorgeous, though I've not look at whether they support<br>
rendermapping in XSI, though I'm sure Aghiles would be more than happy =
to<br>
provide customers with something that does this within XSI in order to get<=
br>
3Delight into a new facility.<br>
<br>
Cheers,<br>
<br>
Alan.<br>
---<br>
Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in body:<=
br>
unsubscribe xsi<br>
<br>
---<br>
Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in body:<=
br>
unsubscribe xsi<br>
<br>
---<br>
Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in body:<=
br>
unsubscribe xsi<br>
<br>
</blockquote>
<br>
---<br>
Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in body:<=
br>
unsubscribe xsi<br>
<br>
<br>
---<br>
Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in body:<=
br>
unsubscribe xsi<br>
</blockquote>
<br>
_________________________________________________________________<br>
Explore the seven wonders of the world<br>
<a href=3D"http://search.msn.com/results.aspx?q=3D7+wonders+world&mkt=
=3Den-US&form=3DQBRE" target=3D"_blank">http://search.msn.com/results.a=
spx?q=3D7+wonders+world&mkt=3Den-US&form=3DQBRE</a><br>
---<br>
Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in body:<=
br>
unsubscribe xsi <br>
<br>
---<br>
Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in body:<=
br>
unsubscribe xsi<br>
</div></div></blockquote></div>
------=_Part_25543_12525633.1212032797546--
---
Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in body:
unsubscribe xsi
