visibility bug for geometries in the same space / MB bug

Forums: visibility bug for geometries in the same space / MB bug
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visibility bug for geometries in the same space / MB bug

Postby coilbook » Mon Apr 02, 2018 3:22 am

coilbook Mon Apr 02, 2018 3:22 am
Hi Two bugs:
1. anyway when visibility is set to 0 octane will not render an artifact of two objects being in the same space. I know rendering unchecked fixes it but we have to use visibility because the way chunks of stone disappear during shooting. Thanks


2. When pflow is used or this particle system like in the scene and vertex MB is on these strange lines appear even though particles are not there. Please try the scene SPARKS MB BUG.max frame 95 thnaks
Attachments
sparks mb bug.zip
(576.83 KiB) Downloaded 63 times
sparks mb bug.jpg
opacity bug.zip
(215.31 KiB) Downloaded 62 times
visibility bug.jpg
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Re: visibility bug for geometries in the same space / MB bug

Postby coilbook » Mon Apr 02, 2018 4:02 am

coilbook Mon Apr 02, 2018 4:02 am
also if you go to frame 43 this mess happens with particles. Why cannot octane have right MB direction? one frame is ok next one is messed up
Attachments
ghghg0042.png
ghghg0043.png
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Re: visibility bug for geometries in the same space / MB bug

Postby paride4331 » Wed Apr 04, 2018 8:52 am

paride4331 Wed Apr 04, 2018 8:52 am
Hi coilbook,
the renders I get with your scene are different from the screenshots you posted, give me some time to figure out.
Said that, those triangles you see in render are an overlapping faces artifact; render engines do not like overlapping faces, especially unbiased render engines.
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Paride
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Re: visibility bug for geometries in the same space / MB bug

Postby coilbook » Wed Apr 04, 2018 2:53 pm

coilbook Wed Apr 04, 2018 2:53 pm
paride4331 wrote:Hi coilbook,
the renders I get with your scene are different from the screenshots you posted, give me some time to figure out.
Said that, those triangles you see in render are an overlapping faces artifact; render engines do not like overlapping faces, especially unbiased render engines.
Regards
Paride

Hi Paridie yes they are overlapping but the object's visibility is set to 0 so it should become nonrenderable . I also attached 2 max scenes in a previous post opacity bug and sparks bug Thanks
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Re: visibility bug for geometries in the same space / MB bug

Postby paride4331 » Wed Apr 04, 2018 4:14 pm

paride4331 Wed Apr 04, 2018 4:14 pm
Hi coilbook,
yes sorry, I told overlapping, but to be fair, I would say coplanar..
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