Playing with glass and visible light again_ discovery

Started by bobbystahr, July 29, 2016, 07:03:24 PM

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bobbystahr

Another ask...how to make it work on leaves? Maybe I'm asking too soon as Ulco mentioned he was off to play with that idea...
something borrowed,
something Blue.
Ring out the Old.
Bring in the New
Bobby Stahr, Paracosmologist

masonspappy

Way to go Bobby.  Makes me wonder how else this might be applied.

bobbystahr

Quote from: masonspappy on July 30, 2016, 11:14:47 AM
Way to go Bobby.  Makes me wonder how else this might be applied.

Trying on a pop of a tree but am having no luck....so far
something borrowed,
something Blue.
Ring out the Old.
Bring in the New
Bobby Stahr, Paracosmologist

Dune

You have to set opacity to 0.501 and you get more light passing through. Works, though the impact is modest.

luvsmuzik

Check your object files, I think some plants already have a translucency image as I recall? Lily maybe...


bobbystahr

Quote from: j meyer on July 30, 2016, 12:36:07 PM
8) Finally.   Glad it was you. ;D

And thanks to you Jochen, for getting me thru the first bit all those months ago.
something borrowed,
something Blue.
Ring out the Old.
Bring in the New
Bobby Stahr, Paracosmologist

bobbystahr

Quote from: Dune on July 30, 2016, 11:41:52 AM
You have to set opacity to 0.501 and you get more light passing through. Works, though the impact is modest.

Here's what I get...what am I doing dumb/wrong?
something borrowed,
something Blue.
Ring out the Old.
Bring in the New
Bobby Stahr, Paracosmologist

Matt

Quote from: Dune on July 30, 2016, 11:41:52 AM
You have to set opacity to 0.501 and you get more light passing through. Works, though the impact is modest.

Just be aware that TG will support proper transparency in future, where an opacity of 0.501 will truly be semi-transparent to the camera, which leaves aren't. Don't build up a library of objects using this technique.

Matt
Just because milk is white doesn't mean that clouds are made of milk.

bobbystahr

Quote from: Matt on July 30, 2016, 04:34:52 PM
Quote from: Dune on July 30, 2016, 11:41:52 AM
You have to set opacity to 0.501 and you get more light passing through. Works, though the impact is modest.

Just be aware that TG will support proper transparency in future, where an opacity of 0.501 will truly be semi-transparent to the camera, which leaves aren't. Don't build up a library of objects using this technique.

Matt


Heh heh, no problem, I can't even get it to work as good as Ulco's test
something borrowed,
something Blue.
Ring out the Old.
Bring in the New
Bobby Stahr, Paracosmologist

AP

Quote from: Matt on July 30, 2016, 10:45:44 AM
Nice result :) Glad I could help.

@AP: yes, this only became possible in TG4, as far as I know. Maybe there are some tricks possible with TG3 but nothing has been demonstrated to work that I recall.

Matt

Ah, OK.    :)

bobbystahr

Quote from: AP on July 30, 2016, 07:38:20 PM
Quote from: Matt on July 30, 2016, 10:45:44 AM
Nice result :) Glad I could help.

@AP: yes, this only became possible in TG4, as far as I know. Maybe there are some tricks possible with TG3 but nothing has been demonstrated to work that I recall.

Matt

Ah, OK.    :)

IIRC the 2nd object invisible for glass shadows was added in the 3.04 update...
something borrowed,
something Blue.
Ring out the Old.
Bring in the New
Bobby Stahr, Paracosmologist

Dune

QuoteDon't build up a library of objects using this technique
I'll repeat this again, and I was aware of it. It will work temporarily, but also after full transparency would work, it would be good to have a way in which shadows can be lighter depending on some variable, perhaps the translucency of the leaves. So canopies may be lighter than they are now.

luvsmuzik

You all probably know all the ins and outs of all this, I do not. Like others I know you can adjust shadow settings in other programs. I did a small test, one with AO, the other GI. The shadows are lighter using AO on my render.

I will find all the disscussion and read up on that as well, but may there is a way?

Dune

Yes, that will lighten up shadows as well, but I was talking about the opacity settings of a tree leaf. But better forget about it  ;)