help on light leaks?
5 posters
help on light leaks?
Hello cgp!
I often encounter this problem on lighting. Parang may nagleleak na light pero kong ichechek ko yong model e wala namang butas. Baka may idea po kayo mga master kong paano ito maiwasan. Time consuming pa kasi pag edit pa sa photoshop.
Thanks in advance!
I often encounter this problem on lighting. Parang may nagleleak na light pero kong ichechek ko yong model e wala namang butas. Baka may idea po kayo mga master kong paano ito maiwasan. Time consuming pa kasi pag edit pa sa photoshop.
Thanks in advance!
jen_tol84- CGP Apprentice
- Number of posts : 539
Age : 39
Location : baguio city, philippines
Registration date : 19/10/2010
Re: help on light leaks?
Sir ginawa ko yong sabi niyo pero ayaw parin. I also tried changing the material to vray override matl and even shifting my camera and sun position gaya ng nasearch ko sa web pero ayaw parin.bokkins wrote:babaan mo ang shadow bias ng ilaw from 0.2 to 0.002.
Then I found out, through trial and error, that by changing the vray Irradiance map current preset from 'very low' to 'medium' or 'high' the light leak is solved.. Pero tumagal kasi konti rendering time ko.
Baka po may nakakaalam sa mga masters natin technical explanation nito? Thanks!
Ito po pala result (Irr current preset= medium)
jen_tol84- CGP Apprentice
- Number of posts : 539
Age : 39
Location : baguio city, philippines
Registration date : 19/10/2010
Re: help on light leaks?
Pwedeng very low pa din, taasan mo lang ang HSph subdivs at interp samples. 60 30 pwede na.
Re: help on light leaks?
try this approach, and experiment with low settings.
just a hunch
it just means try modelling 1 solid mesh for the wall and awning.
just a hunch
it just means try modelling 1 solid mesh for the wall and awning.
celes- Pogi
- Number of posts : 2958
Age : 52
Location : Singapore
Registration date : 25/11/2008
Re: help on light leaks?
Sir ginawa ko nang 80 40 pero ayaw padin..bokkins wrote:Pwedeng very low pa din, taasan mo lang ang HSph subdivs at interp samples. 60 30 pwede na.
By trial and error ulit, nalaman ko na pag binago ko yong ibang values ng basic parameters ng current preset e nawawala yong light leak (see below), and halos pareho lang render time ko sa 'very low' na setting (a minute difference).
Thanks.
jen_tol84- CGP Apprentice
- Number of posts : 539
Age : 39
Location : baguio city, philippines
Registration date : 19/10/2010
Re: help on light leaks?
celes wrote:try this approach, and experiment with low settings.
just a hunch
it just means try modelling 1 solid mesh for the wall and awning.
Wow this one works! Even in a 'very low setting'. Since I'm modelling in revit, I did this by hitting 'join geometry' in revit and updating my scene in 3dmax, hit render and the leak is gone. Thanks Sir!
jen_tol84- CGP Apprentice
- Number of posts : 539
Age : 39
Location : baguio city, philippines
Registration date : 19/10/2010
Re: help on light leaks?
ah I see. so it's a bug pala from a revit model. I think that's it. Thanks for sharing this. This is a good reference for future revit to 3ds exports.
Re: help on light leaks?
Good luck jen, happy rendering
celes- Pogi
- Number of posts : 2958
Age : 52
Location : Singapore
Registration date : 25/11/2008
Re: help on light leaks?
light leaks are cause by poor light cache solution, pag artifacts sa irradiance map .
ciaoriki- CGP Newbie
- Number of posts : 76
Age : 64
Location : united states
Registration date : 15/08/2009
Re: help on light leaks?
jen_tol84 wrote:Sir ginawa ko nang 80 40 pero ayaw padin..bokkins wrote:Pwedeng very low pa din, taasan mo lang ang HSph subdivs at interp samples. 60 30 pwede na.
By trial and error ulit, nalaman ko na pag binago ko yong ibang values ng basic parameters ng current preset e nawawala yong light leak (see below), and halos pareho lang render time ko sa 'very low' na setting (a minute difference).
Thanks.
na-encounter ko na rin ito bro, ina-udjust ko from low to medium ang preset kaya naaayus ang leak pero tama ka medyo tumatagal ang rendering time. Thanks sa new info. try ko ito sa next work ko...
Bosepvance- CGP Apprentice
- Number of posts : 462
Age : 43
Location : Makati
Registration date : 20/10/2008
Re: help on light leaks?
bokkins wrote:ah I see. so it's a bug pala from a revit model. I think that's it. Thanks for sharing this. This is a good reference for future revit to 3ds exports.
in addition lang sir Bokkins pati din po from cad to 3dmax may leak din po. Pero yun nga pag inadjust pataas ang current preset ng irradiance map nawawala ang leak yun lang tumatagal ang rendering time...
Bosepvance- CGP Apprentice
- Number of posts : 462
Age : 43
Location : Makati
Registration date : 20/10/2008
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