[Bug] - Indigo_0.6T1-Bidirectional_kills_Phong_&_bumpmap

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psor
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[Bug] - Indigo_0.6T1-Bidirectional_kills_Phong_&_bumpmap

Post by psor » Sun Jul 30, 2006 10:30 am

Bug - Indigo v0.6 Test 1 - bidirectional/phong

Edited for better reading and to save the searchsystem of phpBB. *fg*

Heya Nick! :D :D :D

The bidirectional support is mocking the phong lobe ... :P :D ;)

If I try to render a scene with bidirectional enabled and phong materials
in the scene I get strange artifacts. Without bidir no problem. ;o)

Here is the example that is showing the artifacts and the download of the scenefile:
Image

note: No primitive is being used, meshes only.

Thanks for reading! :D ;)

edit: btw. big thanx for the phong speedup! The noise clears up
faster then in Indigo v0.5 Test 7. :D :D :D ;)

edit 2: The provided scene renders fine with and without bidir
in Indigo v0.5 Test7. ;)

edit 3: Tested the same scene without Meshlights and used
a HDRI for lighting. Result: No problem with bidirectinal support.

This Image shows HDRI with bidirectional ...
Image

edit 4:Test with Skylight and background element: Same problem
with bidir ... artefacts are showing up fast.

This Image shows Background element with bidirectional ...
Image

... to be continued. :D ;)



take care
psor
Last edited by psor on Tue Aug 15, 2006 12:20 pm, edited 1 time in total.

sprocket
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Post by sprocket » Thu Aug 10, 2006 10:09 am

I also have this problem, but I found that using phong with NK data removes the artifacts... weird.
Here's part of an image (after about 12 hours rendering) with normal phong materials:
Image

Ithen changed the metal backplate to use NKdata and it rendered fine, though the plug plastic still had artifacts.
Image

Edit: also had this problem majorly with skylights and meshes, though everything looks fine in v5 test7

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psor
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Post by psor » Tue Aug 15, 2006 12:13 pm

Nick? I need some feedback. Is the bumpmapping support broken with
phong at this time? I tried to do a lil investigation and was on the way
to help a mate out with a testscene. ... but bumpmapping seems to be
off - at least for me. ;o)

Phong - w/o bidir
Image

Diffuse - w/bidir
Image

Specular - w/bidir
Image

There is nothing special about the scene, just three meshlights a
background and a leather-bumpmap ... :P :D :D ;)

As you can see the diffuse and specular shader getting faceted if I use
a bumpmap ... any update on this issue is very welcome ... thanx! ;o)


take care
psor

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ThatDude33
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Post by ThatDude33 » Tue Aug 15, 2006 12:20 pm

but nick said that bump for phongs is screwed up

interesting finds though psor :shock:
Matt B. >>Maya To Indigo<<
Image

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psor
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Post by psor » Tue Aug 15, 2006 12:22 pm

Ups, ... thanks mate! I couldn't recall that ... but was wondering
what is going on with my scene ... *LOL*

:D :D ;)


take care
psor

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