{"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\/it\/blog\/novosti-interneta\/google-i-binomial-otkryli-kod-sistemy-szhatiya-tekstur-basis-universal","title":{"rendered":"Google e Binomial hanno rilasciato il codice del sistema di compressione delle texture Basis Universal","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Le aziende Google e Binomial hanno presentato<\/a><\/noindex> codici sorgente Basis Universal<\/a><\/noindex>, \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 \u00e8 distribuito<\/a><\/noindex> sotto licenza Apache 2.0. <\/p>\n

Basis Universal integra il sistema di compressione 3D Draco precedentemente<\/a><\/noindex> pubblicato<\/p>\n

e cerca di risolvere il problema della fornitura di texture per GPU. Finora, gli sviluppatori erano limitati nella scelta tra formati a basso livello che garantiscono alte prestazioni, ma sono specifici per GPU e occupano molto spazio su disco, e altri formati che permettono una riduzione delle dimensioni, ma non possono competere con le texture GPU in termini di prestazioni. Il formato Basis Universal consente prestazioni paragonabili a quelle delle texture native per GPU, ma offre un livello di compressione superiore.
\nBasis \u00e8 un formato intermedio che consente una rapida ricodifica in vari formati a basso livello per le texture GPU, utilizzate sia su sistemi desktop che su dispositivi mobili. Attualmente supporta la traslazione nei formati PVRTC1 (4bpp RGB), BC7 (modalit\u00e0 6 RGB), BC1-5, ETC1 e ETC2. In futuro, \u00e8 prevista la supporto del formato ASTC (RGB o RGBA) e delle modalit\u00e0 4\/5 RGBA per il formato BC7 e 4bpp RGBA per PVRTC1.<\/p>\n

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

Le texture nel formato Basis occupano da 6 a 8 volte meno memoria video e richiedono il trasferimento di circa la met\u00e0 dei dati rispetto alle texture standard basate su JPEG, e dal 10 al 25% in meno rispetto alle texture in modalit\u00e0 RDO. Ad esempio, con una dimensione dell'immagine JPEG di 891 KB e una texture ETC1 di 1 MB, la dimensione dei dati nel formato Basis ammonta a 469 KB nella modalit\u00e0 di massima qualit\u00e0. Durante il posizionamento delle texture nella memoria video, le texture utilizzate nei test in formato JPEG e PNG hanno consumato 16 MB di memoria, mentre per le texture nel formato
\nBasis sono stati necessari 2 MB di memoria nel caso della traslazione in BC1, PVRTC1 e ETC1, e 4 MB nel caso della traslazione in BC7.<\/p>\n

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

\u041f\u0440\u043e\u0446\u0435\u0441\u0441 \u043f\u0435\u0440\u0435\u0432\u043e\u0434\u0430 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043d\u0430 Basis Universal \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u043f\u0440\u043e\u0441\u0442. \u0414\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u043f\u0435\u0440\u0435\u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0438\u043c\u0435\u044e\u0449\u0438\u0435\u0441\u044f \u0442\u0435\u043a\u0441\u0442\u0443\u0440\u044b \u0438\u043b\u0438 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u0432 \u043d\u043e\u0432\u044b\u0439 \u0444\u043e\u0440\u043c\u0430\u0442 \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u043c\u043e\u0439 \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u043c \u0443\u0442\u0438\u043b\u0438\u0442\u044b «basisu», \u0432\u044b\u0431\u0440\u0430\u0432 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u044b\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0430. \u0414\u0430\u043b\u0435\u0435 \u0432 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0438 \u043f\u0435\u0440\u0435\u0434 \u043a\u043e\u0434\u043e\u043c \u043e\u0442\u0440\u0438\u0441\u043e\u0432\u043a\u0438 \u043d\u0443\u0436\u043d\u043e \u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043f\u0435\u0440\u0435\u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0449\u0438\u043a basisu, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043e\u0442\u0432\u0435\u0447\u0430\u0435\u0442 \u0437\u0430 \u0442\u0440\u0430\u043d\u0441\u043b\u044f\u0446\u0438\u044e \u043f\u0440\u043e\u043c\u0435\u0436\u0443\u0442\u043e\u0447\u043d\u043e\u0433\u043e \u0444\u043e\u0440\u043c\u0430\u0442\u0430 \u0432 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u044b\u0439 \u0442\u0435\u043a\u0443\u0449\u0438\u043c GPU \u0444\u043e\u0440\u043c\u0430\u0442. \u041f\u0440\u0438 \u044d\u0442\u043e\u043c \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u043d\u0430 \u0432\u0441\u0435\u0439 \u0446\u0435\u043f\u043e\u0447\u043a\u0435 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u0441\u0442\u0430\u044e\u0442\u0441\u044f \u0441\u0436\u0430\u0442\u044b\u043c\u0438, \u0432 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 \u0437\u0430\u0433\u0440\u0443\u0436\u0430\u044e\u0442\u0441\u044f \u0432 \u0441\u0436\u0430\u0442\u043e\u043c \u0432\u0438\u0434\u0435 \u0432 GPU. \u0412\u043c\u0435\u0441\u0442\u043e \u0443\u043f\u0440\u0435\u0436\u0434\u0430\u044e\u0449\u0435\u0433\u043e \u043f\u0435\u0440\u0435\u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u0446\u0435\u043b\u0438\u043a\u043e\u043c, GPU \u0432\u044b\u0431\u043e\u0440\u043e\u0447\u043d\u043e \u0434\u0435\u043a\u043e\u0434\u0438\u0440\u0443\u0435\u0442 \u0442\u043e\u043b\u044c\u043a\u043e \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u044b\u0435 \u0447\u0430\u0441\u0442\u0438 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f. <\/p>\n

\u00c8 supportata la memorizzazione in un unico file di array di texture eterogenei (cubemap), texture volumetriche, array di texture, livelli mipmap, sequenze video o frammenti di texture arbitrari. Ad esempio, \u00e8 possibile impacchettare in un unico file una serie di immagini per creare brevi video o combinare pi\u00f9 texture utilizzando una palette comune per tutte le immagini e deduplicando modelli di immagini tipici. L'implementazione del codec Basis Universal supporta la codifica multithread con OpenMP. Attualmente, il ricodificatore funziona solo in modalit\u00e0 monothread.<\/p>\n

Inoltre \u00e8 disponibile<\/a><\/noindex> decodificatore Basis Universal per browser, fornito in formato WebAssembly, che pu\u00f2 essere utilizzato in applicazioni web basate su WebGL. In definitiva, Google intende garantire il supporto di Basis Universal in tutti i principali browser e promuoverlo come formato di texture portatile per WebGL e la futura specifica. WebGPU<\/a><\/noindex>, concettualmente simile alle API Vulkan, Metal e Direct3D 12. <\/p>\n

Si segnala che la possibilit\u00e0 di incorporare video con successiva elaborazione esclusivamente tramite GPU rende Basis Universal una soluzione interessante per la creazione di interfacce utente dinamiche su WebAssembly e WebGL, dove possono essere visualizzati contemporaneamente centinaia di piccoli video con un carico minimo sulla CPU. Fino all'introduzione delle istruzioni SIMD in WebAssembly, un livello di prestazioni simile non era raggiungibile con i codec tradizionali, pertanto i video basati su texture possono essere utilizzati in aree dove i video normali non sono applicabili. Attualmente, si sta preparando un codice con ulteriori ottimizzazioni per i video, inclusa la possibilit\u00e0 di utilizzare I-frame e P-frame<\/a><\/noindex> con supporto per il riempimento adattivo (CR). <\/p>\n

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

Fonte: 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-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\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\n","aioseo_head_json":{"title":"\ud83e\udd47Google e Binomial hanno rivelato il codice del sistema di compressione delle texture Basis Universal | ProHoster","description":"Le aziende Google e Binomial hanno reso disponibili i codici sorgente di Basis Universal, un codec per la compressione efficace delle texture e il relativo formato di file universale \".basis\" per la distribuzione di texture basate su immagini e video. 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