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Big Sur Terragen Style
Big Sur Terragen Style
Comments: 5

03.12.2023, 13:40

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TIR settings
TIR settings


TIR settings
Description: A reminder for me as much as anyone. Turn on the TIR! The gun was a free model for DAZ's site. I wanted to give it the appearance of a water pistol. So I did a test render with a green glass like material and got the top image - and then, when I reolised that I had forgotten to set the TIR on, I did it again and got the bottom image. Judge for yourselves which you think is better. Note that the lower image took about six hours less time to render just by activating the TIR - that's got to be worth considering if nothing else.
Added by: davidbrinnen
Keywords: davidbrinnen, bryce5.5, DAZstudio, DAZ, gun, TIR, pistol
Date: 05.20.2005 08:46
Hits: 4348
Downloads: 177
Rating: 0.00 (0 Vote(s))
File size: 186.7 KB
Previous image: Canyon-Pillars
Next image: Plug

Author: Comment:

Join Date: 05.24.2004
Comments: 29
water gun

first thing that crossed my mind before reading description.. that looks like a water gun... good!
05.20.2005 09:14 Offline Gueran

Join Date: 12.27.2003
Comments: 80

What's that TIR you speak of? The only difference I can notice is the reflection of the gun...Is that it?

And I think the first one looks better in terms of realistic water gun. However the second one looks appealing(did I spelled this right?) too but in terms of a collection item(you know...having one along with a bunch of others like it).
05.20.2005 18:53 Offline boen_robot boen_robot at 148058941

Join Date: 10.01.2004
Comments: 163
TIR, is a setting in which.......

Ok In your render options ( to the lower right of the main render button, Looks liek a downards facing triangle. ) click that Go into render options you will see a setting titled TIR if you click that It makes Glassy Opjects or any object that Is transparent BTW TIR stands for -Total Internal Reflection- ok anyways TIR Kinda Micro Mages light Deterring how the bounce Of or in a object such as water, diamonds, gems, glass ect and will greatly reduce render time as david already said with TIR checked and IMO it looks better only took 6 less hours than without TIR checked, So really just keep it checked if you want lower render times it will help em out greatly :)
05.20.2005 19:09 Offline jesuis xxomnislashxx at

Join Date: 12.11.2003
Comments: 451

Looks better with the TIR! Are you sure you said it right, I think Jesuis is right, it takes 6 hours LONGER with TIR ON then without it? Is that correct?

Awesome work!
05.21.2005 05:54 Offline Nightst4r nightst4r at

Join Date: 10.01.2004
Comments: 163
I might be wrong

Dont take my word for it i might be wrong :(
05.21.2005 06:01 Offline jesuis xxomnislashxx at

Join Date: 01.03.2004
Comments: 2224
Render times

Setting the TIR wil reduce render times in scenes with transparent materials in it because the render depth for TIR is (in default setting) lower than the standard render depth. It all depends on what effect you are looking for - however if you are not too fussy then set TIR and take advantage of the lower render times.
05.21.2005 10:57 Offline davidbrinnen mail at

Join Date: 05.26.2004
Comments: 4720

To what value do you set TIR? Default is 2, which I think may be a bit narrow. It says, essentially, how many time a ray of light is reflected inside an object (like a prism, for ex.) Don't forget, you also have to set and adjust the Max. Ray Depth. Default 6 is adequate for most projects, but if you have reflecting objects facing themselfs, you might to have to increase it beyond 100. In this case, you could call it TER (total external reflections). While fully appreciating the savings in render time, I like the top water pistol better. Try to use TIR, but with a higher setting than 2.
05.21.2005 11:40 Offline Horo h.-r.h.wernli at

Join Date: 04.08.2005
Comments: 197

great I will have to look it to this... The gun on the top looks more realistic. It has a more plastic look to it. I hate to play with a glass water gun.
05.23.2005 14:53 Offline FoxBoy Schlechter_Fuchs at

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