Thin plastic chair - Ghost = How?

[Polymax]

Compare Corona vs Vray. Glass more realistic in the Corona, than in the Vray!

[cecofuli]

Mmm... in Corona the glass, on the bottom, is too dark,. Maybe absorption low?
But this is not the problem)) The question is that, with CoronaSun or CoronaLight, it isn't possible to obtain a transparent shadows. =)
We need transparent shadows!!! For design and architectural projects.

[maru]

Compare Corona vs Vray. Glass more realistic in the Corona, than in the Vray!

I think it's a matter of proper shaders an you can achieve similar results with different renderers. But it may be true it's easier and faster to set up a nice glass shader in corona.

[Polymax]

I think it's a matter of proper shaders an you can achieve similar results with different renderers.

try compare  vray Glass shader vs Corona glass shader ;)!

[cecofuli]

Keymaster? What do you say about this thread? =)  We need "Affect shadow" parameter like in VRay ;-)

[Polymax]

Unbiased caustic
PT+PT, MSI=0, PT sampl=32

[cecofuli]

Great, great test O_O !  But...  11 hours =)

[pionier]

Did you use Bidir/VCM or Progressive method for that render?

[Polymax]

Did you use Bidir/VCM or Progressive method for that render?

Progressive

[Ondra]

I'll get to it...

[cecofuli]

Great!!! =)

[maru]

I think it's a matter of proper shaders an you can achieve similar results with different renderers.

try compare  vray Glass shader vs Corona glass shader ;)!

Ok. Here are my tests. I can't see any significant difference. You can achieve same result with both renderers.
I mean, if a renderer supports: refraction, fresnel reflections, glossiness and fog or absorption - what other parameters would cause differences between goo glass shaders?

Models and setup are crappy but it's not important in this comparison.

Noticed a bad thing: low MSI makes reflections on backsides invisible (red circles).

[cecofuli]

Maru, look the image in  attachment:
In the first test, the material is transparent, but the shadow no :(
In VRay, in this case, we use "affect shadows" in VRayMat.
The correct result is like in Bidir, but Bidir doesn't support absorption and, i think, is less robust and fast

[maru]

I know. I'm refering to this Polymax's post only:

Compare Corona vs Vray. Glass more realistic in the Corona, than in the Vray!

[Polymax]

I know. I'm refering to this Polymax's post only:

Compare Corona vs Vray. Glass more realistic in the Corona, than in the Vray!

ok, and in this case?:
Can you set up a glass-shader in the  Vray so it look like in the Corona?
Share scene: http://www.cgvision.ru/temp/Glass_shader.rar