Opacity bug (alpha shadow issue)

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Opacity bug (alpha shadow issue)

Postby javierluisbravo » Mon Jun 21, 2021 8:35 pm

javierluisbravo Mon Jun 21, 2021 8:35 pm
issues.jpg


Hi,

here again with this bug that seems silly but it's not...

it seems it's something related to the alpha shadow calculation as it's not well calculated when there are intersectios.
I will share the scene in next post.

It should not happen this...

thanks!
Javier
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Re: Opacity bug (alpha shadow issue)

Postby javierluisbravo » Mon Jun 21, 2021 8:38 pm

javierluisbravo Mon Jun 21, 2021 8:38 pm
here previous max scene...

hope you can find a solution... as for a bird or grass or whaterver where you use opacity maps... this is needed to be rendered properly where the geo intersects (but the alpha channel not)...

thanks
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test_opacity_fail02.zip
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Re: Opacity bug (alpha shadow issue)

Postby paride4331 » Tue Jun 22, 2021 1:53 pm

paride4331 Tue Jun 22, 2021 1:53 pm
Hi javierluisbravo,
in this case try to set the Ray epsilon (Kernel Panel) to 0,000001
Regards
Paride
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Re: Opacity bug (alpha shadow issue)

Postby javierluisbravo » Tue Jun 22, 2021 7:35 pm

javierluisbravo Tue Jun 22, 2021 7:35 pm
Thanks..

Octane does not allow me to put so many ceros there.. but i put it in 1.. and then i put in 0.. and it got fixed....
there's a bug in the spinner there... just to let you know.

thanks for the fix!
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Re: Opacity bug (alpha shadow issue)

Postby paride4331 » Wed Jun 23, 2021 7:32 am

paride4331 Wed Jun 23, 2021 7:32 am
Hi javierluisbravo,
Regards
Paride
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