Urrrrgent, I need so much help, please

[gitano_anton]

This shit of image is only that i make in 13 hours of rendering, what´s wrong with this file?. Only has displacement map in the grass, 7 or 8 Speedtree models and HSV Exponential color mapping, IR preset is High,but with -3 /-1 min-max rate. How can i go faster?.The image has 3500x2800.I am DESPERADO like Antonio Banderas

[natty]

hi
are you calculating your irr map at that resolution ... -3/ -1 @ 3500x2800 ?

[gitano_anton]

Yes, but i don´t know the ideal solution

Yes Natty, -3 -1 in 3500x2800, can you teach me the correct settings for that resolution?
I´ll invite you to pescaito frito

[natty]

try calculating your map at -4 / -2 @ 1750x1400, save the map and then render @ the resolution that you need from the saved map.

[Max_4_Arch]

Yes double Hitech
what's your machine ??? grass displace is always so hard for render , your displace setting and units ????

[gitano_anton]

Yes it´s so hard

I agree with u, the diplacement map it´s so hard to render, but my problem was the speedtree models and i´ve found a great solution, render takes middle of time,for each tree.

[deneb26]

hi gitano
if your pic is a still, why not composite the trees in post with
pics of real trees/grass ? your render will significantly be much faster!
try to disable 'generate GI' for small objects in your scene, which won't contribute to the overall lighting anyway (i.e. fences, handrails).

greez
ale

[gitano_anton]

Trees with PS?

Thanks Deneb26, but this is the way that i´ve used over the past 5 years, it´s obsolete. All the clients said the same "It look like stickers".
With speedtree and a good vray mtl for it, is so much better.
Thanks

[natty]

have a look at onyx tree or natfx... much better than speed tree..

[tom schuelke]

Hi gitano_anton

first, like natty said, decrease your gi settings, .-3-1 still is very high for such a big image. use much smaler settings, they still would lead to a good gi solution.

secound, of cours, displacement can give you millions of polygons for your grass. decrease it inside of the displ. modifier settings. this still might lead to a grass impression still good.

do you youse glossys ? this also can make it slower.

We´ve made many equal images for a client, with small houses, very detailed roof, everything in 3d, grass displacement, and with xfrog trees and also onyx trees. What also is difficult especialy for vray is opacity. opacity is calculated with true refractions wich takes lot of time. Try to use real geomitry (onyx tree´s like told for example) when ever you can.

our image still takes lot of time rendering solution of 1800x1200 and 2 Hours of rendertime (settings decreased to the ponit our client just stops seeing artifacts which means, we 3d guys do see them). Try to see your image with the eye of your client, and you may lower seettings once again, if you don´t mind.


Tom from Hamburg


www.lichtecht.de

[giraffe]

asfar as I understand from your messages, I suppose the presets work well for 640x480 resolution.
So how do you handle them for bigger resolutions- is there a formula? or are there any hints for this?
can you give some info?

[gitano_anton]

To Giraffe

I don´t understand your question

[gitano_anton]

To Natty

For me OnyxTree generates so many faces, and texture it is a nightmare,
i´ll take a look to NatFX, thank you.

[deneb26]

yes, i agree with the 'stickers' you mentionned.
but take a look at this pic:



the grass is composited in post (PS).
the time your scenes/projects take for displacement or all other kinda 'maps' like rpc or 2d-trees, i personnaly would invest for composite.
if you know how to avoid or correct the bad-lighting-'thing' on people, i guess you will end up with good results.

well that is what i think...sure this won't work for animations.

greez
ale

[flipside]

asfar as I understand from your messages, I suppose the presets work well for 640x480 resolution.
So how do you handle them for bigger resolutions- is there a formula? or are there any hints for this?
can you give some info?

Got to vray.info
There's lot's of info about this, and about this 'formula'