Shader Recipe Series
Pano pano muzipangizo zamagetsi, maphikidwe samapanga nzeru zambiri, koma zinandichitikira usiku wina pamene ndinali kukumba uphungu wophika nkhuku ndi mandimu kuti ndikayambe mndandanda womwe uli ndi mitundu yosiyana siyana - zokuzira maphikidwe .
Zonse "mabuku ophika" alembedwa pa zipangizo ndi mithunzi ku Maya, UDK, 3DS Max, Vray, ndi zina zotero.
Ndizoyambitsa ambiri oyamba kumene amakhala ndi mavuto, ndipo chifukwa chabwino! Kugwiritsa ntchito mapepala a "arcane" monga "mphamvu zowonongeka" ndi "kuchepa" poyesa kutsanzira zenizeni zakuthupi monga matabwa, galasi, miyala, kapena tileamic si ntchito yovuta.
Kotero, pano ife tiri.
Kuyambira ndi malo amodzi , timayamba kufotokozera zochitika zina zomwe zimakhala zovuta kuti zikhomere. Tidzakhala tikugwiritsa ntchito Amaya mndandandawu, ngakhale kuti tikhoza kulowa mu Unreal Development Kit nthawi kapena ziwiri. Tili okondwa ndi mndandandawu ndikuyembekeza kuti tiphunzire zambiri polemba izi.
01 a 02
Kodi Ambient Occlusion ndi chiyani?
Musalole kuti dzina lopusa inu -lowetsedweratu ndilo chinthu cholunjika bwino kuti mumange, ndipo ndi chofunika kwambiri.
Osati kokha AO amagwiritsa ntchito (wokongola kwambiri) kuti apange zithunzi zogwira ntchito, zimagwiritsidwanso ntchito mobwerezabwereza ngati kumapeto kwa composting ndi zojambulajambula chifukwa zimathandiza kutulutsa zinthu zowonjezereka ndi zinthu "pansi" powonetsa mithunzi .
Kuchokera kwachidziwitso ndi mawonekedwe achidziwitso, kutanthauza kuti kumagwira ntchito ngakhale ngati kulibe kuwala kulikonse. Mwachidziwitso, ndikulingalira kwakukulu kwa kuunika kwa dziko lapansi, ndipo akuyenera kutsanzira momwe kuwala kukufalikira kuzungulira chipinda kapena chilengedwe.
Zomwe zimakhala zosaoneka bwino zimakhala ndi chiwonetsero chokhala ndi "mthunzi wofewa" ndi zobisika zosaoneka paliponse paliponse malo awiri amakhala pafupi (kapena kumbali ya chipinda, pansi pa zinthu, mfundo zabwino, ndi zina zotero). Zithunzi zosaoneka bwino nthawi zina zimatchedwa "dongo limamasuliridwa" chifukwa chofanana ndi dongo.
Pano pali chitsanzo chomwe ndapanga kuti ndikhale ndi msonkhano watsopano chaka chatha chomwe chimagwiritsa ntchito malo ozungulira kuti asonyeze mawonekedwe a chitsanzo (Diego Armazan).
02 a 02
Kupanga Zochitika Zambiri Zozizwitsa Shader:
Kupanga zithunzi zosaoneka bwino zojambula zithunzi ndizosavuta, ndipo sizimasowa mapu a UVs, mapangidwe , kapena kuunikira.
Pali njira zambiri zowonjezera zotsatira za zotsatira zosiyana, koma zomwe ndikufotokozera apa ndi zabwino komanso zowongoka, zomwe zimafuna nthenda imodzi yokha ya Mental Ray ndi mfundo yamakono Lambert.
Pano pali ndondomeko yochepa pang'onopang'ono.
Tsegulani zenera la Hypershade ndikupanga zinthu zatsopano za Lambert.
Apatseni dzinali-ine nthawi zambiri ndimagwiritsa ntchito zinthu monga zosavutaOcclusion_mat .
Lembani kabuku kawiri kuti mutsegule zida zake zakuthupi. Apa ndi pamene tidzakhazikitsa magawo ambiri a mthunzi.
Mwachidziwitso mtundu wa mtunduwu ndi wautsi, koma sitikufuna kuti zilembo zathu ziwoneke, kotero ife tikuti tiwonetsere mtundu wa malonda mpaka kumapeto kwa mdima. Tikugwiritsa ntchito 0, 0, .38 chifukwa cha mtengo wa HSV pa chikhalidwe cha mtundu , koma izi ndi nkhani ya zokonda zanu.
Chinthu chotsatira chimene tikuyenera kuchita ndikutsegula chidziwitso chodziwika bwino mu zinthu zakuthupi.
Dinani bokosi lochezera pafupi ndi kulowetsa kwa incandescence . Izi zidzabweretsa ndondomeko yomasulira zenera.
Pansi pa tsamba la Ray Mental , dinani zojambulazo ndi kupeza ma_m_kukhalapo pa mndandanda. Dinani izo, ndipo node idzatsegulidwa mu mkonzi wawonekedwe kumbali yoyenera ya skrini yanu.
Muyenera kuwona mndandanda wa zikhumbo-zomwe zomwe ziri zofunika kwa ife ndi zitsanzo, zowala / zakuda, kufalikira, ndi kutalika kwamtunda, komabe chinthu chokha chomwe tidzasintha ndicho chiwerengero cha zitsanzo.
M'kati mwa malo ozungulira, chiwerengero cha zitsanzo zimayang'anira phokoso la phokoso.
Kusiya zitsanzo pa 16 kapena 32 zidzakhala zochepa, pamene kuyika mtengo ku chinachake ngati 64 kapena 128 chidzawonekera bwino kwambiri. Zitsanzo 32 ndi zabwino kuti ndiyesedwe, koma ngati ndikukonzekera pawonetsera chithunzi ndimagwiritsa ntchito 64 kapena 128.
Yesani zolemba zingapo zosiyana siyana kuti mutenge kusiyana-mungakupeze ngati momwe maonekedwe akuonekera kumapeto kwake.
Pano pali chithunzi chomwe ndinachigwiritsa ntchito pogwiritsa ntchito malo akunja. Ndinawonetsa kamodzi kanthawi kumbuyo kusonyeza kusiyana pakati pa mawu a Maya otembenuzidwa, ndipo kutuluka kozungulira kumakhala ndi zitsanzo 64 ndi 128. Onani momwe chiwonetserochi chikuwoneka bwinoko ndi mawonekedwe ozungulira?
Mutha kusewera mozungulira ndi zizindikiro zina ngati mukufuna:
Kuwala ndi mdima kumayendetsa zochepetsetsa ndi zoyenera zomwe mumapereka. Ngati mutapeza kuti mfundo zanu zazikulu zowonongeka kapena mithunzi yanu ikuphwanyidwa, mungagwiritse ntchito ogwiritsira ntchitoyi kuti muthe kulipira. Kufalikira ndi kutalika kwakukulu kudzasintha mtunda / kuchoka mtunda pakati pa kuunika kwanu ndi mdima.
Apo inu mupite! Tikukhulupirira kuti mwaphunzira pang'ono za malo owonetsera komanso momwe angagwiritsire ntchito ngati maonekedwe abwino pazithunzi zanu 3d. Mundidziwitse pa blog ngati muli ndi mafunso alionse!