now lets be serious

General discussion about 3D DCC and other topics
wesserbro
Posts: 160
Joined: 27 Oct 2012, 18:05

now lets be serious

Post by wesserbro » 23 Jan 2017, 14:03

If you are a render-guy, please. Do not do this.
Image
AO(or soft GI shadows from the sky) is NOT visible in sun-lit areas

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Bellsey
Posts: 686
Joined: 19 Apr 2010, 11:50
Location: London, UnitedKingdom

Re: now lets be serious

Post by Bellsey » 23 Jan 2017, 15:03

erm, are you sure what Ambient Occusion is? It's not just about soft shadows.

Ambient occlusion is a method to compute lighting on a surface of an object that takes into account light brightness due to occlusion of the surface in relation to light source.

wesserbro
Posts: 160
Joined: 27 Oct 2012, 18:05

Re: now lets be serious

Post by wesserbro » 23 Jan 2017, 15:08

Yes, i know what AO is. And i'm pretty sure you know what i mean in this thread saying "AO or soft GI shadows from the sky". Probably thats not AO on that screenshot, but it still looks like dirt from AO pass.
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ok, maybe i wasn't very informative with the statement, so i'll try to elaborate. What i see on that picture is: too soft sun-shadow (comparing to footage hard shadows) + AO pass OR most likely just lack of GI contribution in the ground contact area under the turtles.

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xsi_fanatic
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Joined: 06 Jun 2011, 03:08

Re: now lets be serious

Post by xsi_fanatic » 24 Jan 2017, 19:26

You're right. The shadows are too soft compared to the environment around them.
Also, it doesn't look like they're making contact with the ground. But to make a better judgement on that, one would have to examine it frame by frame.

wesserbro
Posts: 160
Joined: 27 Oct 2012, 18:05

Re: now lets be serious

Post by wesserbro » 24 Jan 2017, 20:25

I didn't emphasize on the shadows being to soft or bad contact because its obvious and happens very rare. But what is more subtle and happens more often is this:
fff.jpg
And if its not the problem with combining GI (or AO) pass with direct light pass, give it a name you like. Yes, i'm talking about that dark stain under the sphere, and yes, that's what i see on that turtles screenshot.
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mirkoj
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Skype: mirko-jankovic

Re: now lets be serious

Post by mirkoj » 04 Feb 2017, 19:05

Well you just have to look on the shadows on the left.. :)