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Subject: Vampires in My Runtime

shorterbus opened this issue on Mar 01, 2012 · 12 posts
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shorterbus ( ) posted Thu, 01 March 2012 at 11:27 AM · edited Mon, 23 December 2024 at 1:53 PM

I'm trying to do a reflection of V4 in a mirror, but nothing shows up in the render - no reflection is cast. P-2012, raytracing checked, reflective material in the mirror, firefly render, IDL and a single specular light. What gives?

shorterbus ( ) posted Thu, 01 March 2012 at 1:00 PM

I'm checking my breath and sniffing my armpits.

LaurieA ( ) posted Thu, 01 March 2012 at 1:03 PM · edited Thu, 01 March 2012 at 1:03 PM

file_479047.jpg

Try this for your mirror material. And make sure you have some raytrace bounces in your render settings ;).

That material was posted by BB awhile back.


Eric Walters ( ) posted Thu, 01 March 2012 at 1:22 PM

How many bounces? Do you have transparency? It is 4 for reflection through transparency.

 

Quote - I'm trying to do a reflection of V4 in a mirror, but nothing shows up in the render - no reflection is cast. P-2012, raytracing checked, reflective material in the mirror, firefly render, IDL and a single specular light. What gives?


shorterbus ( ) posted Thu, 01 March 2012 at 1:28 PM

Thanks Laurie, I'm giving it a try now.

shorterbus ( ) posted Thu, 01 March 2012 at 1:30 PM

Eric, I'm trying Lauie's settings, so no transparency. I've got it set for 8 bounces. (?)

hborre ( ) posted Thu, 01 March 2012 at 2:06 PM

Visible in raytracing?

LaurieA ( ) posted Thu, 01 March 2012 at 3:01 PM

8 bounces is too many. 2 should be sufficient since the glass is a mirror and not transparent ;).

Laurie


shorterbus ( ) posted Thu, 01 March 2012 at 3:29 PM

Okay, I thinkI have it figured out. The angle of the mirror - though right in front of the character I was trying to reflect, was wrong. Had to turn the mirror to a much less than obvious angle. At least it is working in test renders.

aRtBee ( ) posted Sat, 03 March 2012 at 3:15 PM

is this just an angle-of-incidence = angle-of-reflection thing? Then the normal of the mirror should point to something in the middle of Vicky and the camera. Just try it at home, with a real girl and a real mirror. It's basic optics / geometry.

As the material is concerned, I don't know why one should have reflection = 1  AND Specular = 2 as all channels together should not exceed 1 in the first place. I would say: reflection = 0.95 + specular = 0.05 and the reflection color might be a bit cyanic dus to the glass (again, try this at home; put a colored object in front of a mirror and compare the colors).

 

- - - - - 

Usually I'm wrong. But to be effective and efficient, I don't need to be correct or accurate.

visit www.aRtBeeWeb.nl (works) or Missing Manuals (tutorials & reviews) - both need an update though

SteveJax ( ) posted Sat, 03 March 2012 at 3:40 PM

file_479113.jpg

Depending on how many "Mirrors" you use your bounces should be set to between 2 and 5. A Room with four walls of mirrors would be 5 bounces. Two walls is 3 bounces. etcetra... this way they reflect not just the scene but also each other.

Eric Walters ( ) posted Sat, 03 March 2012 at 3:47 PM

WAIT! Are you saying that Vicky is not real??

Interesting details- does the glass absorb some of the red? I'd not noticed that.

Quote - i Just try it at home, with a real girl and a real mirror. It's basic optics / geometry.

As the material is concerned, I don't know why one should have reflection = 1  AND Specular = 2 as all channels together should not exceed 1 in the first place. I would say: reflection = 0.95 + specular = 0.05 and the reflection color might be a bit cyanic dus to the glass (again, try this at home; put a colored object in front of a mirror and compare the colors).

 


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