Hi Morten,
One option you have for cheating it is to render a pass from the
light's perspective then project that onto the shadow receiving
geometry to render a shadow pass.
Not great, but depending on what your options are...
Cheers,
Alan.
On 9/28/06, Morten Bartholdy <xsi(at)colorshopvfx.dk> wrote:
Holidays are to be respected at all times :)
I thought I rememberd this problem from the first BoolTrace version -
thought you had nailed it since then, since we plug in to shadow ports too.
Alas, I'll cheat it then.
It is soo much cleaner to use than booleans.
- Morten
----- Original Message -----
From: "Alan Jones" <skyphyr(at)gmail.com>
To: <XSI(at)Softimage.COM>
Sent: Thursday, September 28, 2006 10:56 AM
Subject: Re: Booltrace shadows?
> Sorry for the delay guys - been avoiding the list during holidays :-P
>
> I still haven't gotten the magic to work with shadows correctly. If
> anyone would like to take a swing at it I'm happy to pass the source
> their way.
>
> Cheers,
>
> Alan.
>
> On 9/26/06, kim aldis <kim(at)aldis.org.uk> wrote:
>> You'll have to let Alan confirm this but I think shadows was one of the
>> things he had problems with. From what I remember from when I used to
>> mess
>> with renders, it's quite tough to do with a ray tracer, easier with a
>> scanline renderer and a doddle with an A-buffer renderer.
>>
>>
>> > -----Original Message-----
>> > From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On
>> > Behalf Of dbarosin(at)optonline.net
>> > Sent: 25 September 2006 16:00
>> > To: XSI(at)Softimage.COM
>> > Subject: Re: Booltrace shadows?
>> >
>> > you could use a different piece of geo to cast the shadow and turn of
>> > shadows for the fence.
>> >
>> > ----- Original Message -----
>> > From: Morten Bartholdy <xsi(at)colorshopvfx.dk>
>> > Date: Monday, September 25, 2006 10:35 am
>> > Subject: Booltrace shadows?
>> >
>> > > I have a boolean scenario which the XSI boolean engine can't handle
>> > so
>> > > I turned to Alan Jones fine Boltrace shader. I have a wooden fence
>> > > which I have made a very irregular hole in, showing the fresh and
>> > > brighter wood inside. Trouble is I can't get the fence to cast
>> > shadows
>> > > without shadowing the cut hole - hope this makes sense. I have tried
>> > > the various combinations of shadow casting off for fence and hole
>> > > cutter but no go. What I would like is to shine a light through the
>> > > hole and have the fence woth hole cast a shadow on the objects behind
>> > > it and onto the edge inside the hole. See simplified test here:
>> > >
>> > > http://colorshopvfx.dk/XSI/BoolTrace_shadow.jpg
>> > >
>> > > Anybody know a way to achieve this?
>> > >
>> > > - Morten
>> > >
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