light cache vrs quasi

[h.kroeber]

I think the main reason for for the difference in rendering speed is that in the first image you used hsph=50 and in the second image hsph=25 for the first bounce..

Regards H.Kroeber

[DaForce]

Ahh yeah i didnt even look for that.
But i dont think that would account for a 2 hour time difference.

gilicom:
Also make sure you have store with IR map unticked for the lights.
Well you could try ticking it put you will need a lot more subs, and wont work if you have only LC and QMC for rendering.

<edit> double negative

[gilicom]

store direct light = unticked

2 questions

If i would like to pre calculate on half size i would have to tick that right?
when using a saved ir map that was calculted using ir/lc , when i render it from file i have to choose for sec bounce - none right?

[gilicom]

Also make sure you dont have store with IR map unticked for the lights.

wouldn't it make my render time go way too long??

[DaForce]

2 questions

If i would like to pre calculate on half size i would have to tick that right?
when using a saved ir map that was calculted using ir/lc , when i render it from file i have to choose for sec bounce - none right?

Yes, you would tick that.
Yes i believe that is also correct.

wouldn't it make my render time go way too long??

Longer... yes, more accurate.. yes. Depends on what your after.
I would leave it unticked and then turn the subs abit lower. But if you turn it on you need to turn the subs up to get a cleaner/accurate shadow.
It would be that much longer...but definitly longer

[gilicom]

Ok
will try all of that soon and keep you posted with renders and render times.
Thanks.

[DaForce]

Ok cool.

Standing by

[gilicom]

Daforce
one last quastion
i'm gonna try later on with the store with irr map unticked and u said i should lower my vray light subdv .
8 is good for that case?

[DaForce]

If its unticked i would still use between 10-20
If its ticked i would use 20-50 depending on scene.

[jujubee]

i have glossy on the walls and it is 3 subdv

3 Subdivisions is way too low on a material IMO. That setting speeds things up but causes unwanted noise (unless you really want it or have an object at a considerable distance.) 8 is the default for Vray - try raising it to a little above 10 and see what happens.

[efx2004]

'Check sample visibility' option is good for the points like your beam touches to wall.. I think, turning it on would solve the lighting problem at that place.
Thanks.

[meanadam]

what is this 1/2 size IRR map business?
Isn't that making a lot of grain at full-res?

Can you show one with full-size IRR?

And for goddsakes take the cds out of the lighting tests.

[gilicom]

what is this 1/2 size IRR map business

it means that you can calculate the irr map at 1/2 the size of the final render , as far as i know this is a recommended methhood by chaos.

here are what i came up with after all your comments ,keep in mind that this is still wip.
all of them share DaForce lc settings.
pic 1: vray light - store with irr map = ticked, no pre calculated ir, render time = 4.52 hrs.

pic 2 :vray light - store with irr map = ticked, pre calculated ir at 1/2 size, render time = 31 min for ir calc , 32 min for render.

pic 3 : vray light - store with irr map = ticked, pre calculated ir at 1/2 size, render time = 31 min for ir calc , 32 min for render.

pic 4 : vray light - store with irr map = unticked, pre calculated ir at 1/2 size, render time = 28 min for ir calc , 5.00 hrs for render.

pic 5 : vray light - store with irr map = ticked, pre calculated ir at 1/2 size, render time = 34 min for ir calc , 1.10 min for render.
on this one i raised the light subdv to 40 and glossy to 10.

tell me what you think and which way is the best you think.
Gili

[DaForce]

The last one is by far the best.

As you can see by raising up the wall glossy subdivs it makes it look alot better. I would suggest (as a test) try turning of the glossy on the wall and lower the vray light subdivs to 25 and then render again. Ideally it should turn out a nice smooth wall. Im just curious if it was the vraylight subdivs or the glossy subdivs that fixed it. (and im pretty certain it was the glossy subdivs, as 3 is way to low)

oo and that girl at the front is way to bright (and im not talking about her intelligence)

[gilicom]

I think that as far as shadows the one with store with irr map = unticked is the best.( look at the door handle)
as far as 1/2 size irr map , i don't see it making any changes..and its faster.