Black "shadows" issue

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snorky
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Black "shadows" issue

Post by snorky » Mon Apr 22, 2019 8:29 pm

hi ti all!
when I try to render a tree image, I see a strange black shadow inside the foliage, so I try to render a test image with simple plane and the result is the same...
if I don't use gpu render the result is correct .....but it's so sloooooow :)
what is the solution?
thanks
prova.jpg
prova1.jpg
prova2.jpg
prova3.jpg

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pavoda
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Re: Black "shadows" issue

Post by pavoda » Mon Apr 22, 2019 11:05 pm

hi, there is "max path depth" in indigo. If you set more, the result will be better. Try set about 20 or more.

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pixie
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Re: Black "shadows" issue

Post by pixie » Tue Apr 23, 2019 12:24 am

Indeed, the thing is this kind of texturing where there's tons of leafs behind each other slows down massively, since you have to trade up for path depth. You'd be better if you could get straight geometry. I've tried a solution where I build the geometry out of alpha channel and then I explode the faces where it is applied into instances.

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snorky
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Re: Black "shadows" issue

Post by snorky » Tue Apr 23, 2019 12:42 am

THANKS!!!!

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snorky
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Re: Black "shadows" issue

Post by snorky » Tue Apr 23, 2019 4:30 am

:/ no solution yet, high numbers on max depth don't solve completely... and over 40 gpu is slow like cpu (with low "max depth")
I've to make do without it
I'll get over it

burnin
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Re: Black "shadows" issue

Post by burnin » Tue Apr 23, 2019 6:37 am

rather use geometry for twigs & leaves instead of opacity, it's lighter and also much faster to render
at first, it may seem more work, but in the end it all pays off, especially in a case like yours or with grasslands

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snorky
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Re: Black "shadows" issue

Post by snorky » Wed Apr 24, 2019 4:06 am

burnin wrote:
Tue Apr 23, 2019 6:37 am
rather use geometry for twigs & leaves instead of opacity, it's lighter and also much faster to render
at first, it may seem more work, but in the end it all pays off, especially in a case like yours or with grasslands
:twisted: is a nightmare..
_ok.jpg
with the help of inkscape trace bitmaps and dxf export
Senza titolo.jpg
the difficult is to change the old geometry with the new one :?

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