Da soglasen s vishe skazanim, to chto ochen malo pamyati, nado po kraine mere 3 giga dlya MR jelatelno.
Nadeyus eto tebe pomojet.
Ya rabotayu v Maya, i otkrovenno govorya MentalRay ochen kachestvennii i ochen bistrii po sravneniyu s tdrugimi renderami.
Poskolku nado pravelno nastraivat ego i optimizirovat ego dlya bistrogo i kachestvnogo images.
Vot moi sovet, ya vsegda ispolzuyu Spot Light dlya dnevnogo osveshenie, prichina v tom chto omni light ispuskaet 6 istochnikov luchei, kogda spot light ispuskaet tolko odin istochnik, tem bolee s directional light, ego ne sovetuyut ispolzovat i ispuskat iz nego photoni, hotya govoryat s novoi versiei 3.4 eto problemu pochenili s DirectionalLight i mojno spokoino ispolzovat, nado samomu ubeditsya v etom.
Dlya exterior lighting obyazatelno nujno ispolzovat centimiters, exponent jelatelno ostavit kak 2 dlya tochnosti falloff v realnom mire, energiya mojet doiti do sumashedshih razmerov, v moei szene ya ispolzuyu okolo 50000000 i eto ne predel, chem bolshe fotonov ispuskaetsya tem bolshe nujno uvelichivat energiyu, takje kogda dostatochno fotonov naprimer 500.000 bivaet i bolshe, nujno uvelichivat Global Illum Accuracy ya ispolzuyu okolo 1.200 i Global Illum Radius 20, eto daet horoshii overlap photonov, uvelichivaya Accuracy pridaet ludshe resultat, nado sledit za tem skolko nujno Accuracy i kogda dostatochno.
Sootvetstvenno ispolzuya Final Gather sglajivaet photoni, no vi teryaete kachestvo i contrastnost, ne beda, dlya etogo est filtri, v moem sluchyae ya ispolzuyu Mitchel filter, tak je umenshayu Contrast Threshhold do minimume na glaz. Eshe horoshii sovet otklyuchyat Rebuild Photon Map kogda vi znaete, chto u vas dostatochno energii i photonov v scene, tolko dlya statichnih izobrajenii, takim obrazom uskoryaete render time i prodoljaete dalshe tweaking s FG.
Est eshe galochka pod FG nazivaetsya Precompute Photon Lookup, eto daet skorost v prashete rendera, naprimer ego ludshe ispolzovat kogda vi ispolzuete FG i GI sovmestno, chto eto daet, FG nachinaet proscheut photonov i takim obrazom on ispolzuet ih v proshete, eto ochen horosho, teper esli vi ispuskali na primer 100.000 fotonov, to teper v 3 raza menshe mojno ispusktat photoni 32.000 chem ranshe, kompensiruya takim obrazom proschet sceni i skorost rendera.
Ne zabivaite pro Min i Max Radius v FG slot, chem menshe Min i Max Radius tem jesche shadows budet ludshe i kachestvenoi kartinka, takje Fall off min and max radius, eto daet reshit artifakt v radiuse kogda vi videte na image. Vse eto izmeryaetsya s pomoshyu measure tool, kak dlya max radius ispolzuetsya realnii mashtab obekta a min radius v 10 raz menshe.