Re: Re[4]: HDR \ AO pass

Date : Fri, 19 May 2006 10:23:04 +0200
To : <XSI(at)Softimage.COM>
From : "Tim Leydecker" <BauerOink(at)gmx.de>
Subject : Re: Re[4]: HDR \ AO pass
Hi Chris,

open the XSI help and search the index for HDRI.

Have a look at (especially) the entry >HDRI, lighting a scene with

For free (non-commercial use) HDRI images for testing,
search google for Paul Debevec, you´ll find several *.hdri
images somewhere on his site(s). To get the best out of
those, have a look at hdrshop.exe (also somewhere on
his site, or linked). The version 1 is free for non-commercial
use as well.

Cheers

tim



----- Original Message ----- From: "Chris" <walksfar(at)netscape.ca>
To: "Manny Papamanos" <XSI(at)Softimage.COM>
Sent: Friday, May 19, 2006 4:34 AM
Subject: Re[4]: HDR \ AO pass



Hello Manny, wait, so your saying render out a regular pass, then
render out just a pass with HDRI and (no adding the AO yet) comp the
two together but making sure that HDRI is OFF on one of the passes?

Christopher


Thursday, May 18, 2006, 12:59:59 PM, you wrote:

HDR PASS is the base image in the attachment it is made with New
Pass>>>Image Based Lighting, add uses an HDR image, you can find an hdri
map on the net... You must Enable Final gathering in the render
options/region opts.
Many may start their "beauty" pass with a conventional ray trace pass
with lights and traced shadows...
Then add the HDR pass = Image based lighting pass with an HDRI
environment map.
Then add AO.

Manny Papamanos
CREATE>>SOFTIMAGE>XSI


-----Original Message-----
From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On Behalf
Of Chris
Sent: Thursday, May 18, 2006 12:39 PM
To: Manny Papamanos
Subject: Re[2]: HDR \ AO pass

Hello Manny, I see your example, but how do you setup a HDR pass can
you even ? Or in those examples do you have a HDR image as a
enviroment then just render it out, then create a AO pass?

Christopher


Thursday, May 18, 2006, 12:11:53 PM, you wrote:

Pretty straight forward...
Usually use HDR as an environment map.. that way objects pick up fine
detail/color levels in their reflections. You can also use HDR images
with New Pass>>>Image Based Lighting this is combined with FG so the
"lighting" comes out of the HDR map for photoreal results.
Use the AO pass to add subtle shadow hints in comp that FG or trace
don't pick up, use this as a grey mask for a black base color when
comping. Test this on a grid and sphere on top of it, add it to a
group
and put the AO shader on the group or make a pass.
I have tested these two methods on my spare time and have attached an
image as an example;)


Manny Papamanos
CREATE>>>SOFTIMAGE>XSI


-----Original Message-----
From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On
Behalf
Of Chris
Sent: Thursday, May 18, 2006 7:55 AM
To: XSI(at)Softimage.COM
Subject: HDR \ AO pass

Hello, anyone know where I can get info on setting up both of these
kinds of passes? I have been searching 'the base' and other resouces
just to find deadlinks.

Christopher


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Best regards,
Chris                            mailto:walksfar(at)netscape.ca

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