Transparent materials and shadows

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mlru
Licensed Customer
Posts: 239
Joined: Sat May 29, 2010 9:26 pm

Hi there,
I have a question regarding transparent materials like glasses.
no matter what I do, they always produce shadows like a solid material, which is very disturbing on windows or transmapped objects.
I'm using a pretty basic specular settings.
Is this a matter of my quite poorly GeForce 8500 GT (i have the latest drivers, though) or am I just missing something?
Attachments
mat.jpg
table with glassplate but solid shadow
table with glassplate but solid shadow
SurfingAlien
Licensed Customer
Posts: 355
Joined: Thu Jan 21, 2010 12:05 am
Location: Italy

I think sunlight can't pass through glass (and transparent materials) atm (it will be fixed in one of the future beta release). please correct me if I'm wrong
MacBookPro unibody 2x2.4GHz | 4Gb | 9400M+9600GT 256Mb | OSX 10.6.8
i7 2600-K @3.4GHz | 8Gb | GTX560Ti 2Gb | Windows7x64 | Octane 1.0 b2.52
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kubo
Posts: 1377
Joined: Wed Apr 21, 2010 4:11 am
Location: Madrizzzz

use an HDRI instead and pathtracing
windows 7 x64 | 2xGTX570 (warming up the planet 1ºC at a time) | i7 920 | 12GB
mlru
Licensed Customer
Posts: 239
Joined: Sat May 29, 2010 9:26 pm

thanks for the replies.
kubo wrote:use an HDRI instead and pathtracing
hmm, i'll try that although i don't see a reason why daylight and hdri should work different in this case.
i'd expect the same behavior, maybe just less noticeable....
Win11/64Bit | GTX 4090 24GB | NVidia Driver 546.29 | Octane 4.05 | DAZ Studio 4.21
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kubo
Posts: 1377
Joined: Wed Apr 21, 2010 4:11 am
Location: Madrizzzz

it's because it's just sunlight which doesn't go thru translucent materials (glass or opacity mapped materials) enviroment maps do.
windows 7 x64 | 2xGTX570 (warming up the planet 1ºC at a time) | i7 920 | 12GB
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