Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: domovoynafany on 2016-10-31, 06:16:04

Title: Refraction in reflection
Post by: domovoynafany on 2016-10-31, 06:16:04

Hi to all! I have some troubles with reflection of my glass in the table.
You can see it here.
(http://antonermak.ru/wp-content/uploads/2016/10/2016-10-31-2.png)

Title: Re: Refraction in reflection
Post by: maru on 2016-10-31, 14:54:38

Is there a chance this is physically correct and that the glass does look like this when viewed from below? (just place your camera below it, facing up, and see if it looks like that)

Title: Re: Refraction in reflection
Post by: domovoynafany on 2016-10-31, 19:27:00

Hah.... no, it's not phisically correct. If check "caustic (slow)" in glass material - it will works, as I want.... BUT
VERY-VERY slow. My last render time was 7 hours. =( (3000 x 4000 px) Without caustic - 2,5 hours.

Title: Re: Refraction in reflection
Post by: romullus on 2016-10-31, 20:03:25

Does your glass have refraction glossiness other than 1.0? If so, can you set it to 1.0 and see how it will render?

Title: Re: Refraction in reflection
Post by: domovoynafany on 2016-11-01, 00:47:10

No, glossy = 1 and on glass and on table.

Title: Re: Refraction in reflection
Post by: romullus on 2016-11-01, 15:06:01

Is it possible for you to upload stripped scene (just the glass and the table) for inspection?

Title: Re: Refraction in reflection
Post by: Jpjapers on 2016-11-02, 00:07:15

the more i look at this the more it looks like the one ontop isnt right. like the IOR or something. it feels like there should be more clear glass for the thickness thats demonstrated in the reflection. anyone else?

Title: Re: Refraction in reflection
Post by: Fluss on 2016-11-02, 02:06:49

Quote from: jpjapers on 2016-11-02, 00:07:15

the more i look at this the more it looks like the one ontop isnt right. like the IOR or something. it feels like there should be more clear glass for the thickness thats demonstrated in the reflection. anyone else?

Yeah i share your assumption. There is something weird with that glass

Title: Re: Refraction in reflection
Post by: burnin on 2016-11-03, 03:16:36

Mere speculations without an example.
Normals OK?
Clean geo... No overlapping, no doubles?
How is it modeled? Fluid in glass have at least three techniques i know of that ppl use.

So yup, have fun solving ;)