blenderart_mag-3_eng.pdf

Us ing Y afray in

profe s s ional

e nvironm e nt.

Le arn h ow to us e

S unfow re nde ring

s y s te m .

Y afray caus tics

e xpaine d.

Le arn m ore about

Y afray G I.

D PI de m y s tifie d

Re nde ring

optim iz ation.

CO NTENTS

EDITO R

Gaurav Naw ani

M ANAGING EDITO R

Sandra Gibe rt

W RITERS

Sandra Gibe rt

Caas Eick e K uh ne n

Danie l LaBarge

Ch ris toph e r K ua

Z s ot Ste fan

DESIGN & GRAPH ICS

Gaurav Naw ani

W EBSITE DESIGN

Nam Ph am

CO PYRIGH T© ‘Be nde rart M agaz ine ’,

‘be nde rart’ and be nde rart ogo are

copyrigh t Gaurav Naw ani. ‘As k Be ntuu’

and ‘be ntuu ogo’ are copyrigh t Sandra

Gibe rt. Al products and com pany nam e s

fe ature d in th e pubication are trade m ark

or re gis te re d trade m ark of th e ir re s pe ctive

ow ne rs .

w w w .be nde rart.org

ED ITO RIA L

You’ve s tudie d al th e tutorias , you buit th e pe rfe ct m ode , adde d th e pe rfe ct m ate ria, now its

tim e to re nde r your w ork of art. You h it th e big “Re nde r” button, w ait for w h at s e e m s ik e fore ve r

. . . and w h e n it finay finis h e s . . . w e l to be h one s t, th e e nd re s ut ook s noth ing ik e w h at you

h ad im agine d. W h at w e nt w rong?

M os t ik e y, q uite a bit w e nt w rong. Re nde ring is th e re s ut of e ve ryth ing th at cam e be fore and

as s uch th e re are a ot of factors th at can m ak e or bre ak you final im age . Is your igh ting jus t

righ t, are your s e ttings corre ct, did you account for al th e s pe cial e ffe cts you adde d. Eve n if you

ge t al th e above righ t, you m igh t s pe nd h ours or days w aiting for th e final re nde r to finis h , ony

to dis cove r you ne e d to tw e ak s om e th ing jus t a itte .

W e com e to Is s ue #3 “Re nde ring”. In th is is s ue w e w il be cove ring s om e of th e is s ue s th at

affe ct your final re nde r, bringing carity and be tte r unde rs tanding to ach ie ve th e be s t re nde r

pos s ibe .

In addition to ook ing into th ings th at can im prove your re nde rs , w e w il as o ook at w ays to

de cre as e your re nde r tim e s as w e l as tak e a ook at s om e of th e Re nde r e ngine s avaiabe for

Be nde r. O f w h ich q uite a fe w h ave be e n de ve ope d re ce nty and w arrant a ook s e e .

W e as o h ave 3 s e parate artice s on h ow to us e Yafray, w ith e ach s h ow ing a diffe re nt te ch niq ue

and m e th od of us e .

Ch e e rs !

Sandra

s andra@ be nde rart.org

Be ntuu s ay s

Re nde ring is an ofte n

m is unde rs tood proce s s and until

w e ge t th e “m ak e re nde r be autiful

button” ;) code d, w e h ave to do it

th e h ard w ay. And th at w oud be by

unde rs tanding w h at goe s into a

re nde r and w h at affe cts th e

re nde ring proce s s .

To s e t one up is e as y: Add>M e s h >Icos ph e re , s ubdivis ion 2

De e te th e bottom h af of th e Icos ph e re

Add a s pot igh t, and pare nt it to th e Icos ph e re

H it F7, (O bje ct Se ttings w indow ) W ith th e Icos ph e re s e e cte d,

pre s s th e dupive rt button.

Se e ct th e s pot igh t and adjus t th e Ene rgy w ay dow n (around

.01)

Adjus t th e re s t of your s e ttings as ne e de d to ge t th e am ount of

igh t and s h adow you are ook ing for.

Th e s h ort ans w e r is th at EVERYTH ING affe cts th e re nde ring

proce s s . Th at w oud incude m ate rias , igh ting, s pe cial e ffe cts

and th e s ce ne its e f. And w h ie dis cus s ing re nde ring coud fil a

w h oe book , for th is artice w e are going to tak e a ook at tips and

trick s th at can incre as e or de cre as e your re nde r tim e s and

q uaity.

O th e r th ings th at can ow e r re nde r tim e s : Ge ne ray us e z -buffe r

am ps ove r raytrace d one s . Se t th e s am pe s and s h adow buffe r

as ow as pos s ibe for th e q uaity you ook ing for.

Sim iary, turn th e s am pe s dow n on e ve ryth ing as ow as you

can ge t aw ay w ith th at pe ope probaby w il not notice (igh ts ,

s ubs urf, rayde pth , e tc.).Re nde r in pas s e s w h e n pos s ibe , you

can re -com pos ite th e pas s e s in GIM P or Ph otos h op, not ony w il

it ow e r re nde r tim e s , you w il h ave m ore control ove r h ow e ach

aye r goe s toge th e r w ith th e oth e rs .

W h e n it com e s to re nde ring, s om e th ings jus t tak e onge r. If you

jus t h ave to h ave th at ce rtain e ffe ct, by al m e ans go for it, but

e xpe ct to w ait a w h ie for your re nde r to com pe te . H e re is a is t

of s om e th ings th at are iabe to incre as e your re nde r tim e :

Raytracing, Am bie nt O ccus ion Ligh ting Se tups

H e avy us e of partice s

Extre m e y de taie d s ce ne s

O ny m ode l th os e de tais th at are ne e de d, UV m apping and

prope r us e of te xture s can s ave on your poygon count. W h e n it

is al s aid and done , us e ony th os e options and te ch niq ue s th at

you actuay ne e d to m ak e your im age or

anim ation ook good. If you can ch e at or fak e it,

th e n do s o, it w il s ave on your re nde r tim e s . If

you jus t h ave to us e it, th e n be pre pare d for th e

w ait. W h ie w aiting I s ugge s t re axing w ith a

nice cup of coffe e and a good book .

O n th e oth e r h and, CG art is ful of trick s and

w ork -a rounds to ow e r re nde r tim e s , s uch as

th e us e of th e fak e GI dom e . Long us e d in

be nde r be fore AO w as code d into be nde r. It

is s im pe to s e tup, e as y to adjus t and not as

com putation h e avy as th e AO option.

NEW S Fas h

day in M onte vide o (K e iz e rs grach t 264,

Am s te rdam ) for furth e r vie w ing and

dis cus s ion of th e proje ct. For m ore

inform ation on th e pre m ie r and th e

foow ing pre s e ntations of th e m ovie

ch e ck h ttp://orange .be nde r.org/.

be nde r. In addition to YafRay, PO V-Ray,

M e gaPO V, th e re are now e xport s cripts

avaiabe for th e foow ing ne w e ngine s :

Th e bigge s t e ve nt in th e Be nde r w ord is

jus t around th e corne r. Proje ct O range is

ne ar com pe tion and th e pre m ie r of

“Ee ph ants Dre am ” h as be e n s ch e due d

for M arch 24, 2006. Cine m a K e te h uis , a

w e l k now n cine m a for docum e ntarie s and

art-h ous e m ovie s in Am s te rdam , h as

be e n ch os e n as th e ocation for th e ong

aw aite d pre m ie r.

K e rk yth e a

Site :

h ttp://w w w .s oftab.e ce .ntua.gr/~ jpanta/Gra

ph ics /K e rk yth e a/

Be nde r h as be com e an e ve r ch anging

program , w ith ne w fe ature s cons tanty

be e n w ritte n and re vis e d for be tte r and

ce ane r functionaity. O ve r th e as t tw o

m onth s , m ajor coding e ffort h as be e n

focus e d into th e “Noode s ” s ys te m (node

e ditor) and th e re nde r e ngine . Th e

Noode s s ys te m aow s for th e cre ation of

h igh y advance d m ate rias and

com pos iting e ffe cts . Th e re nde r e ngine is

be ing s tre am ine d and m odifie d to w ork

ce ane r and m ore e fficie nty, aow ing for

fas te r and m ore e rror fre e re nde ring.

To ch e ck a te s t buid w ith th e s e ne w

fe ature s , drop by th e te s t buid forum at

w w w .be nde r.org.

Sunfow

Site : h ttp://s unfow .s ource forge .ne t/

Th e cine m a ope ns at 17:30 and th e

s h ow ing w il s tart at 18:00. In addition to

th e s cre e ning of “Ee ph ants Dre am ”, th e re

w il as o be a pre vie w of th e “M ak ing of”

docum e ntary. If you m is s th e firs t

s h ow ing, th e re w il be anoth e r at 18:45.

Indigo

Site :

h ttp://h om e page s .paradis e .ne t.nz /nick am y

/indigo.h tm l

3De igh t

Site : h ttp://w w w .3de igh t.com /

Afte r th e pre m ie r, th e re is a ce e bration

panne d at one of th e h ippe s t nigh tcubs ,

ironicay nam e d “Be nde r”. W h ie th e

pre m ie r is fre e of ch arge , th e re is an

e ntrance fe e to th e “afte r party”.

Saturday 25 and Sunday 26 M arch , th e

Proje ct O range te am w il be on h and al

M e tropoigh t

Site : h ttp://w w w .3dvirtuaigh t.com /m t/

Since th is is s ue is focus ing on re nde ring,

th is is a good tim e to e xpore al th e

re nde r e ngine s avaiabe for us e w ith

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