LC animation issues,

[tom182]

I am trying to setup an animation of the exterior scene (camera pans from left to right and the doors of the building open), It is just a 120 frame animation at the moment, I have set both engines to LC and have the LC set to 2000, flythrough mode, scale: screen.

When doing it this way I have noticed that the illuminated areas look terrible (see image)

Any ideas what I am doing wrong,


Thanks,
Tom

[glorybound]

LC

It looks like it need more samples. Can you up the subdivisions on those lights?

[DanielBrew]

I think you need to change the filter from 'nearest' to 'fixed' when you use LC for your primary GI.

Another way would be to disable 'store direct light' in your lightcache. It will make you render times longer though.

Dan

[Neilg]

Are you using a vray edge tex in your bump to get a filleting effect? It does that exact effect if your normals are facing the wrong way with that setup.

Your 'looks like crap' red marker reminds me of a client I had once when I was first starting out... haha.

[tom182]

cheers guys,
changing it to 'fixed' did the trick


thanks
T

[tom182]

Actually now that I have tried a few test renders another prob has reared its ugly head, I am animating the Sun position over the 100frames so I get a daytime to night animation, the interior and garden lights are timed to come on at frames 40-60.
I am doing a precalc for the LC @ frame 50 , (set to fly through) the resulting render for that frame is fine, however when I go to the first frame and do a render with primary as IR, Sec'rd as LC from file it is way too dark, subsequently if I change the LC to single frame it is correct. Hence I cannot get the precalc lc to work as it just gives me dark renders,
So I am looking at doing this (LC) per frame which will take for aaagggeessss
any ideas

[jujubee]

In the past I've tried using LC/LC for animations and ran into too many issues of flickering. I just can't recommend that mode for it.

[tom182]

here is a sample test mov, cam is not moving but I am getting a flickering on the roof tiles of the cream house, http://www.coastal-cottage.com/rende...st%20soren.mov
After this appeared I rendered out an IR map using multiframe incremental, Nth was set at 10 and I got a 20mb irmap, I left the LC as single frame (because of the porblem in my previous post), then tried that and the quality was pi$$ poor.
As I have a few days left to sort this I then tried the IRmap and LC as single frame, did a region render on a few frames and its still flickering in this localised area
Have my setting here http://www.coastal-cottage.com/renders/settings.jpg
My gut feeling is that there is a simle solution to this, would greatly appreciate any info/help as I think the animation will look nice one I sort that out. Havent really tried animation with Vray before, cant say i am enjoying at the moment.
I am not even going to attemp DR with this,

Cheers,
Tom

[Subburb]

i would suggest some settings for your anim :
at least, it will gain time

adaptive Rqmc : i would suggest 2-4 or 2-6 if you need extra fine AA with noise thr between 0.005 and 0.1.

rqmc sampler :
noise thr = 0 ??? strange setting. i think 0.005 can be a good value (it will speedup things)

Irrmap :
medium-anim slows down things and gives some artifacts, except with ultra strong settings.
I would suggest medium, or even low, works very well...

multiframe incremental is not the good choice when other things than camera are changing. Multiframe increm (or incremental add to current map) are suitable only for walkthrough mode.
if lighting is changing, you need to use single frame mode (for LC, too) or animation prepass if you use Vray 1.5 or greater (sp1)

LC :
i would suggest to reduce a little LC subdivs (i.e 600-800 for a 800*600 output) to gain time
and use something like 24 in prefilter (and, optinnaly, none for filter)

i hope this settings will help to get a clean render in less time.

[natty]

Actually now that I have tried a few test renders another prob has reared its ugly head, I am animating the Sun position over the 100frames so I get a daytime to night animation, the interior and garden lights are timed to come on at frames 40-60.
I am doing a precalc for the LC @ frame 50 , (set to fly through) the resulting render for that frame is fine, however when I go to the first frame and do a render with primary as IR, Sec'rd as LC from file it is way too dark, subsequently if I change the LC to single frame it is correct. Hence I cannot get the precalc lc to work as it just gives me dark renders,
So I am looking at doing this (LC) per frame which will take for aaagggeessss
any ideas

If your camera isn't moving then fly through mode wont work! for any moving entities including lights you must calc ever frame!
Answer, give it to a render farm to do it for you .. the cheek of the lad..

[tom182]

hehe, it all else fails well maybe,
Original problem of crappy looking lights Solved Cheers, Dan
2nd problem of dark renders solved- due to me using LC as 'fly though' when I had animated lights, LC is now set to single- cheers Subburb

Remaining problem Flickering animation - pretty much localised to the one area of the scene, i.e. where the two roofs meet each other, I will upload a stripped down version if anyone is willing to take a look and help me out,

I am currently rendering out with Subburb's suggestions - fingers crossed.

Thanks,
Tom

[Subburb]

me too
waiting for you results now...

[tom182]

Flickering issues

ok folks, still having issues with the flickering where the two roofs meet, the stripped down file can be grabbed from http://www.coastal-cottage.com/max%20files
Camera position is animated (nothing drastic- modest movement), Lights and sun are also animated.

any help would be much appreciated,
Thanks
Tom

[Subburb]

i'll have a look to your scene.
can you tell us which vray version u use ?

[tom182]

cheers,
I'm still on 1.5 RC3,

thanks,