Benedikt Kessler (bjk++at++benedikt.munich.sgi.com)
Tue, 10 Dec 1996 14:57:52 +0100
Hi!
It seems your not the first one with this problem (see old messages
attached below). But there's a solution!
Du scheinst nicht der erste mit diesem Problem zu sein (siehe Mail weiter
unten). Allerdings gabe es zu dieser Mail auch noch keine Antwort.
That's what happening:
- When you activate ivfix in ivview you will see the same problem you have
in Performer
- the following (among other things) happens when the Inventor Loader in
Performer har read your file:
// Optimize converted scene graph
pfNotify(PFNFY_INFO, PFNFY_MORE, " Optimizing Performer scene
graph");
if (DoFlatten)
{
result = pfdFreezeTransforms(result, NULL);
result->flatten(0);
}
if (DoClean)
result = pfdCleanTree(result, NULL);
perfly has the option perfly -y iv,4,0 xxx.iv which sets DoClean to 0.
This way the pre- and post-traversal callbacks which turn on and off
env-mapping are left intact (it seems pfdCleanTree is removind/replacing
the node that had the callbacks attached).
But there's a second problem; the loader seems to retesselate the object's
geosets. There are also a few options to correct this:
All three possibilities (maybe there are even more) provide correct
results (even if the options look a little bit inconsistent):
-o 3 disable PFDBLDR_MESH_MAX_TRIS
-O 3 enable PFDBLDR_MESH_MAX_TRIS
-O 5 enable PFDBLDR_MESH_LOCAL_LIGHTING
all together: perfly -O 3 -y iv,4,0 xxx.iv
Ciao! Benedikt
On Oct 16, 10:03pm, Axel Sammet wrote:
> Subject: Inventor loader problems
> Hi
>
> I have problem getting environment mapped geometries to work in perfly.
> the models are inventor based and work perfect in performer 2.0 on RE2
> under 5.3. On iR (Performer 2.1+Patch 1355), however, the environment
> mapping won't work. Modifying perfly to environment-map the entire scene
> works, but of course that's not what I want. ivview on the iR also shows
> the correct mappings.
> I know there was the same kind of problem with env.mapping in the old
> inventor loader under IRIX 5.3. Did the bug slip back in?
>
> has anybody experienced a similar behaviour?
>
> ONYX RE2 DS/4xR4400 150MHz/512MB RAM/4 RM5/MCO ---> WORKS
> ONYX iR RACK 2-Pipe/TKO/DG4-8/8xR10K/1GB RAM/2x4 RM6-64 ---> DOESN'T
WORK
>
>
> Thanks, Axel
>
Sender: purschke++at++audi.de
Date: Mon, 23 Sep 1996 09:28:44 +0200
From: Frank Purschke <frank.purschke++at++audi.de>
To: info-performer++at++sgi.com
Subject: EnvMapping with Inventor files in perfly
Here is another one on perfly:
I have problems to get an environment mapping on inventor objects in
perfly. The following inventor sample describes a little bit closer what
I mean:
Inventor file: test.iv
---------------------------
#Inventor V2.0 ascii
Separator {
TextureCoordinateEnvironment {
}
Texture2Transform {
center 0.5 0.5
}
Texture2 {
filename "/usr/share/data/textures/reflect/cafe.rgb"
model MODULATE
}
Cube {
}
}
This small example works fine with ivview but it fails with perfly.
Any hints would be very helpful!
Frank
-- Frank Purschke Volkswagen AG Virtual Reality Lab
-- +---------------------------------+----------------------------------+ |Benedikt J. Kessler | Silicon Graphics GmbH | |Training Munich | Am Hochacker 3 - Technopark | |Silicon Graphics Computer Systems| 85630 Grasbrunn-Neukeferloh, FRG | | --- __o ,__o | | | ------_ \<,_ _-\_<, | Phone: (+int) 89 46108-212 or -0 | |----- (*)/ (*) (*)/'(*) | Fax: (+int) 89 46108-190 or 222| +---------------------------------+----------------------------------+ |Network: <bjk++at++munich.sgi.com> | +--------------------------------------------------------------------+ ======================================================================= List Archives, FAQ, FTP: http://www.sgi.com/Technology/Performer/ Submissions: info-performer++at++sgi.com Admin. requests: info-performer-request++at++sgi.com
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