{"id":34420,"date":"2019-10-31T21:58:13","date_gmt":"2019-10-31T18:58:13","guid":{"rendered":"https:\/\/prohoster.info\/blog\/google-i-binomial-otkryli-kod-sistemy-szhatiya-tekstur-basis-universal\/"},"modified":"2019-10-31T21:58:13","modified_gmt":"2019-10-31T18:58:13","slug":"google-i-binomial-otkryli-kod-sistemy-szhatiya-tekstur-basis-universal","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/google-i-binomial-otkryli-kod-sistemy-szhatiya-tekstur-basis-universal","title":{"rendered":"A Google \u00e9s a Binomial nyilv\u00e1noss\u00e1gra hozta a Basis Universal text\u00fara t\u00f6m\u00f6r\u00edt\u0151 rendszer k\u00f3dj\u00e1t","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A Google \u00e9s a Binomial bejelentette<\/a><\/noindex> forr\u00e1ksz\u00f6vegek Basis Universal<\/a><\/noindex>, egy hat\u00e9kony text\u00far\u00e1k t\u00f6m\u00f6r\u00edt\u00e9s\u00e9re szolg\u00e1l\u00f3 kodek \u00e9s a kapcsol\u00f3d\u00f3 univerz\u00e1lis f\u00e1jlform\u00e1tum «.basis» az f\u00e9nyk\u00e9pek \u00e9s vide\u00f3k alap\u00fa text\u00far\u00e1k terjeszt\u00e9s\u00e9re. A referenciaimplement\u00e1ci\u00f3 k\u00f3dja C++ nyelven k\u00e9sz\u00fclt, \u00e9s sz\u00e1ll\u00edtva van<\/a><\/noindex> Apache 2.0 licenc alatt. <\/p>\n

a Basis Universal kieg\u00e9sz\u00edti a kor\u00e1bban k\u00f6zz\u00e9tett<\/a><\/noindex> 3D adat t\u00f6m\u00f6r\u00edt\u0151 rendszert, a Draco-t, \u00e9s megpr\u00f3b\u00e1lja megoldani a GPU-hoz sz\u00fcks\u00e9ges text\u00far\u00e1k biztos\u00edt\u00e1s\u00e1nak probl\u00e9m\u00e1j\u00e1t. Eddig a fejleszt\u0151k a teljes\u00edtm\u00e9ny szempontj\u00e1b\u00f3l magas, de a GPU-ra specifikus \u00e9s nagy lemezteret ig\u00e9nyl\u0151 alacsony szint\u0171 form\u00e1tumok \u00e9s olyan form\u00e1tumok k\u00f6z\u00f6tt voltak k\u00e9nytelenek v\u00e1lasztani, amelyek cs\u00f6kkentik a m\u00e9retet, de nem konkur\u00e1lhatnak a GPU text\u00far\u00e1k teljes\u00edtm\u00e9ny\u00e9vel.<\/p>\n

A Basis Universal form\u00e1tum lehet\u0151v\u00e9 teszi, hogy a GPU text\u00far\u00e1k nat\u00edv szint\u0171 teljes\u00edtm\u00e9ny\u00e9t \u00e9rj\u00fck el, mik\u00f6zben magasabb szint\u0171 t\u00f6m\u00f6r\u00edt\u00e9st biztos\u00edt.
\nA Basis egy k\u00f6zbens\u0151 form\u00e1tum, amely gyors \u00fajrak\u00f3dol\u00e1st biztos\u00edt k\u00fcl\u00f6nf\u00e9le alacsony szint\u0171 GPU text\u00faraform\u00e1tumokhoz, amelyek asztali rendszereken \u00e9s mobileszk\u00f6z\u00f6k\u00f6n egyar\u00e1nt alkalmazhat\u00f3k. Jelenleg t\u00e1mogatott a PVRTC1 (4bpp RGB), BC7 (6-os \u00fczemm\u00f3dban RGB), BC1-5, ETC1 \u00e9s ETC2 form\u00e1tumokba val\u00f3 \u00e1tkonvert\u00e1l\u00e1s. A j\u00f6v\u0151ben v\u00e1rhat\u00f3an t\u00e1mogatni fogja az ASTC (RGB vagy RGBA) form\u00e1tumot, valamint a 4\/5 RGBA \u00fczemm\u00f3dokat a BC7 form\u00e1tumban \u00e9s a 4bpp RGBA-t a PVRTC1 form\u00e1tumban.<\/p>\n

\"A<\/a><\/noindex><\/center><\/p>\n

A basis form\u00e1tum\u00fa text\u00far\u00e1k 6-8-szor kevesebb videomem\u00f3ri\u00e1t ig\u00e9nyelnek, \u00e9s k\u00f6r\u00fclbel\u00fcl k\u00e9tszer kevesebb adat\u00e1tvitelt ig\u00e9nyelnek, mint a tipikus JPEG form\u00e1tum\u00fa text\u00far\u00e1k, \u00e9s 10-25%-kal kevesebb, mint az RDO \u00fczemm\u00f3dban l\u00e9v\u0151 text\u00far\u00e1k. P\u00e9ld\u00e1ul, ha a JPEG k\u00e9p m\u00e9rete 891 Kb, az ETC1 text\u00fara 1 Mb, akkor a Basis form\u00e1tumban l\u00e9v\u0151 adat m\u00e9rete a legmagasabb min\u0151s\u00e9g mellett 469 Kb. A tesztek sor\u00e1n a JPEG \u00e9s PNG form\u00e1tum\u00fa text\u00far\u00e1k 16 Mb mem\u00f3ri\u00e1t haszn\u00e1ltak el, m\u00edg a Basis form\u00e1tum\u00fa text\u00far\u00e1k eset\u00e9ben BC1, PVRTC1 \u00e9s ETC1 \u00e1tkonvert\u00e1l\u00e1s\u00e1val 2 Mb mem\u00f3ria volt sz\u00fcks\u00e9ges, \u00e9s a BC7 \u00e1tkonvert\u00e1l\u00e1s\u00e1val 4 Mb.
\nA Basis form\u00e1tum\u00fa text\u00far\u00e1k eset\u00e9n a mem\u00f3ri\u00e1nak 2 Mb-ra volt sz\u00fcks\u00e9ge a BC1, PVRTC1 \u00e9s ETC1 \u00e1tkonvert\u00e1l\u00e1sa eset\u00e9n, \u00e9s 4 Mb-ra a BC7 \u00e1tkonvert\u00e1l\u00e1s\u00e1hoz.<\/p>\n

\"A<\/a><\/noindex><\/center><\/p>\n

A megl\u00e9v\u0151 alkalmaz\u00e1sok Basis Universal form\u00e1tumra t\u00f6rt\u00e9n\u0151 \u00e1tkonvert\u00e1l\u00e1s\u00e1nak folyamata meglehet\u0151sen egyszer\u0171. Csak annyira van sz\u00fcks\u00e9g, hogy a megl\u00e9v\u0151 text\u00far\u00e1kat vagy k\u00e9peket a projekt \u00e1ltal biztos\u00edtott «basisu» seg\u00e9dprogram seg\u00edts\u00e9g\u00e9vel \u00faj form\u00e1tumba konvert\u00e1ljuk, a k\u00edv\u00e1nt min\u0151s\u00e9gi szint kiv\u00e1laszt\u00e1s\u00e1val. Ezt k\u00f6vet\u0151en az alkalmaz\u00e1sban a rajzol\u00e1si k\u00f3d el\u0151tt inicializ\u00e1lni kell a basisu \u00e1tkonvert\u00e1l\u00f3t, amely felel\u0151s a k\u00f6ztes form\u00e1tum \u00e1tkonvert\u00e1l\u00e1s\u00e1\u00e9rt a jelenlegi GPU \u00e1ltal t\u00e1mogatott form\u00e1tumba. Ez id\u0151 alatt a k\u00e9pek az eg\u00e9sz feldolgoz\u00e1si l\u00e1ncban t\u00f6m\u00f6r\u00edtve maradnak, bele\u00e9rtve azt is, hogy t\u00f6m\u00f6r\u00edtve t\u00f6lt\u0151dnek be a GPU-ba. Az eg\u00e9sz k\u00e9pet el\u0151re t\u00f6m\u00f6r\u00edt\u0151 k\u00f3dol\u00e1s helyett a GPU szelekt\u00edven csak a sz\u00fcks\u00e9ges k\u00e9p r\u00e9szleteit dek\u00f3dolja. <\/p>\n

T\u00e1mogatott a k\u00fcl\u00f6nf\u00e9le text\u00farat\u00f6mb\u00f6k (cubemap), 3D text\u00far\u00e1k, text\u00farat\u00f6mb\u00f6k, mipmap szintek, vide\u00f3sorozatok vagy tetsz\u0151leges text\u00fardarabok egy f\u00e1jlba val\u00f3 ment\u00e9se. P\u00e9ld\u00e1ul lehets\u00e9ges egy f\u00e1jlban egy k\u00e9psorozat \u00f6sszepakol\u00e1sa kis vide\u00f3k k\u00e9sz\u00edt\u00e9s\u00e9hez, vagy t\u00f6bb text\u00fara \u00f6sszekapcsol\u00e1sa egy k\u00f6z\u00f6s palett\u00e1val \u00e9s a tipikus k\u00e9pmint\u00e1zatok deduplik\u00e1l\u00e1s\u00e1val. A Basis Universal k\u00f3dol\u00f3 megval\u00f3s\u00edt\u00e1sa t\u00f6bb sz\u00e1l\u00fa k\u00f3dol\u00e1st t\u00e1mogat OpenMP haszn\u00e1lat\u00e1val. A dek\u00f3dol\u00f3 jelenleg csak egysz\u00e1l\u00fa m\u00f3dban m\u0171k\u00f6dik.<\/p>\n

Tov\u00e1bbi inform\u00e1ci\u00f3 el\u00e9rhet\u0151<\/a><\/noindex> WebAssembly form\u00e1tumban el\u00e9rhet\u0151 Basis Universal dek\u00f3dol\u00f3 b\u00f6ng\u00e9sz\u0151k sz\u00e1m\u00e1ra, amely webalkalmaz\u00e1sokban haszn\u00e1lhat\u00f3 WebGL alap\u00fa rendszerekhez. V\u00e9gs\u0151 soron a Google c\u00e9lja, hogy a Basis Universal t\u00e1mogat\u00e1s\u00e1t el\u00e9rhet\u0151v\u00e9 tegye minden nagyobb b\u00f6ng\u00e9sz\u0151ben, \u00e9s n\u00e9pszer\u0171s\u00edtse mint hordozhat\u00f3 text\u00faraform\u00e1tumot a WebGL-hez \u00e9s a j\u00f6v\u0151beni specifik\u00e1ci\u00f3khoz. WebGPU<\/a><\/noindex>, amely koncepcion\u00e1lisan hasonl\u00f3 a Vulkan, Metal \u00e9s Direct3D 12 API-hoz. <\/p>\n

Megjegyzik, hogy a vide\u00f3 be\u00e1gyaz\u00e1s\u00e1nak lehet\u0151s\u00e9ge, a feldolgoz\u00e1ssal egy\u00fctt kiz\u00e1r\u00f3lag a GPU oldal\u00e1n, \u00e9rdekess\u00e9 teszi a Basis Universal-t dinamikus felhaszn\u00e1l\u00f3i fel\u00fcletek l\u00e9trehoz\u00e1s\u00e1hoz WebAssembly \u00e9s WebGL alatt, ahol egyszerre t\u00f6bb sz\u00e1z kis vide\u00f3 t\u00fckr\u00f6z\u0151dhet minim\u00e1lis CPU terhel\u00e9ssel. Az SIMD utas\u00edt\u00e1sok WebAssembly-ben t\u00f6rt\u00e9n\u0151 alkalmaz\u00e1s\u00e1nak lehet\u0151s\u00e9ge el\u0151tt hasonl\u00f3 teljes\u00edtm\u00e9nyszint hagyom\u00e1nyos kodekekkel nem volt el\u00e9rhet\u0151, \u00edgy a text\u00far\u00e1kra alapul\u00f3 vide\u00f3k olyan ter\u00fcleteken haszn\u00e1lhat\u00f3k, ahol a norm\u00e1l vide\u00f3 nem alkalmazhat\u00f3. Jelenleg \u00faj kiad\u00e1sra k\u00e9sz\u00fcl a vide\u00f3k tov\u00e1bbi optimaliz\u00e1lt k\u00f3dja, amely lehet\u0151v\u00e9 teszi a haszn\u00e1lat\u00e1t. I-frame \u00e9s P-frame<\/a><\/noindex> adapt\u00edv kit\u00f6lt\u00e9s (CR) t\u00e1mogat\u00e1s\u00e1val. <\/p>\n

<\/a><\/noindex><\/p>\n

Forr\u00e1s: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Google \u0438 Binomial \u043e\u0442\u043a\u0440\u044b\u043b\u0438 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b Basis Universal, \u043a\u043e\u0434\u0435\u043a\u0430 \u0434\u043b\u044f \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u043e\u0433\u043e \u0441\u0436\u0430\u0442\u0438\u044f \u0442\u0435\u043a\u0441\u0442\u0443\u0440 \u0438 \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u043e\u0433\u043e \u0441 \u043d\u0438\u043c \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0433\u043e \u0444\u043e\u0440\u043c\u0430\u0442\u0430 «.basis» \u0434\u043b\u044f \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0442\u0435\u043a\u0441\u0442\u0443\u0440 \u043d\u0430 \u0431\u0430\u0437\u0435 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0439 \u0438 \u0432\u0438\u0434\u0435\u043e. \u041a\u043e\u0434 \u044d\u0442\u0430\u043b\u043e\u043d\u043d\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421++ \u0438 \u043f\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 Apache 2.0. Basis Universal \u0434\u043e\u043f\u043e\u043b\u043d\u044f\u0435\u0442 \u0440\u0430\u043d\u0435\u0435 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u043d\u0443\u044e \u0441\u0438\u0441\u0442\u0435\u043c\u0443 \u0441\u0436\u0430\u0442\u0438\u044f 3D-\u0434\u0430\u043d\u043d\u044b\u0445 Draco \u0438 \u043f\u044b\u0442\u0430\u0435\u0442\u0441\u044f \u0440\u0435\u0448\u0438\u0442\u044c […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":25932,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-34420","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47A Google \u00e9s a Binomial nyilv\u00e1noss\u00e1gra hozta a Basis Universal text\u00fara t\u00f6m\u00f6r\u00edt\u0151 rendszer k\u00f3dj\u00e1t | ProHoster","description":"A Google \u00e9s a Binomial nyilv\u00e1noss\u00e1gra hozta a 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