{"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\/da\/blog\/news\/google-i-binomial-otkryli-kod-sistemy-szhatiya-tekstur-basis-universal","title":{"rendered":"Google og Binomial har \u00e5bnet kildekoden til tekstursystemet Basis Universal","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Google og Binomial har \u00e5bnet<\/a><\/noindex> nettekster Basis Universal<\/a><\/noindex>, en codec til effektiv kompression af teksturer og et relateret universelt filformat «.basis» til distribution af teksturer baseret p\u00e5 billeder og videoer. referenceimplementeringskoden er skrevet i C++ og leveres<\/a><\/noindex> er under Apache 2.0-licensen. <\/p>\n

Basis Universal supplerer tidligere offentliggjorte<\/a><\/noindex> system til komprimering af 3D-data Draco og fors\u00f8ger at l\u00f8se problemet med levering af teksturer til GPU. Hidtil har udviklere v\u00e6ret begr\u00e6nset til valget mellem lav-niveau formater, der muligg\u00f8r h\u00f8j ydeevne, men er specifikke for GPU og optager meget diskplads, og andre formater, der tilbyder st\u00f8rrelse reduktion, men ikke kan konkurrere med GPU-teksturer p\u00e5 ydeevne.<\/p>\n

Basis Universal formatet muligg\u00f8r ydeevne p\u00e5 niveau med native GPU teksturer, men giver en h\u00f8jere komprimeringsgrad.
\nBasis er et mellemliggende format, der giver hurtig omkodning til forskellige lav-niveau GPU teksturformater, der anvendes b\u00e5de p\u00e5 desktop systemer og mobile enheder. I \u00f8jeblikket underst\u00f8ttes overs\u00e6ttelse til formaterne PVRTC1 (4bpp RGB), BC7 (tilstand 6 RGB), BC1-5, ETC1, og ETC2. I fremtiden forventes det, at formatet ASTC (RGB eller RGBA) og tilstande 4\/5 RGBA for formatet BC7 og 4bpp RGBA for PVRTC1 vil blive underst\u00f8ttet.<\/p>\n

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

Teksturer i basis formatet kr\u00e6ver 6-8 gange mindre videohukommelse og kr\u00e6ver en overf\u00f8rsel af omtrent det dobbelte af data sammenlignet med standard teksturer baseret p\u00e5 JPEG og 10-25% mindre end teksturer i RDO-tilstand. For eksempel, med en JPEG-billedst\u00f8rrelse p\u00e5 891 Kb, og en ETC1 tekstur i 1 Mb, er datast\u00f8rrelsen i Basis formatet 469 Kb i h\u00f8jeste kvalitet. N\u00e5r teksturen placeres i videohukommelsen, kr\u00e6vede de teksturer i JPEG og PNG, der blev brugt i testene, 16 Mb hukommelse, mens teksturer i formatet
\nBasis kr\u00e6vede 2 Mb hukommelse ved overs\u00e6ttelse til BC1, PVRTC1 og ETC1, og 4 Mb ved overs\u00e6ttelse til BC7.<\/p>\n

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

Processen med at konvertere eksisterende applikationer til Basis Universal er relativt enkel. Det er nok at omkode de eksisterende teksturer eller billeder til det nye format ved hj\u00e6lp af det medf\u00f8lgende v\u00e6rkt\u00f8j «basisu», mens du v\u00e6lger det \u00f8nskede kvalitetsniveau. Derefter skal applikationen f\u00f8r rendering koden initialisere basisu-omkoderen, som er ansvarlig for at overs\u00e6tte det mellemliggende format til et format, der underst\u00f8ttes af den aktuelle GPU. Under hele behandlingsk\u00e6den forbliver billederne komprimerede, inklusive at de indl\u00e6ses i komprimeret form i GPU'en. I stedet for at forudkode billedet helt, dekoder GPU'en selektivt kun de n\u00f8dvendige dele af billedet. <\/p>\n

Det underst\u00f8ttes at gemme heterogene teksturarrays (cubemap), volumetriske teksturer, teksturarrays, mipmap-niveauer, video-sekvenser eller vilk\u00e5rlige tekstureafsnit i \u00e9n fil. For eksempel er det muligt at pakke en r\u00e6kke billeder i \u00e9n fil for at skabe sm\u00e5 videoer eller at kombinere flere teksturer ved at bruge en f\u00e6lles farvepalet og deduplikerede typiske billedm\u00f8nstre. Implementeringen af Basis Universal-koderen underst\u00f8tter flertr\u00e5det kodning ved hj\u00e6lp af OpenMP. Omkoderen fungerer indtil videre kun i en enkelt tr\u00e5d.<\/p>\n

Yderligere tilg\u00e6ngelig<\/a><\/noindex> Basis Universal-dekoderen til browsere leveres i WebAssembly-format, som kan bruges i webapplikationer baseret p\u00e5 WebGL. I sidste ende \u00f8nsker Google at opn\u00e5 underst\u00f8ttelse af Basis Universal i alle st\u00f8rre browsere og fremme det som et b\u00e6rbart teksturformat til WebGL og den fremtidige specifikation WebGPU<\/a><\/noindex>, som konceptuelt ligner API Vulkan, Metal og Direct3D 12. <\/p>\n

Det bem\u00e6rkes, at muligheden for at indlejre video med efterf\u00f8lgende behandling kun p\u00e5 GPU-siden g\u00f8r Basis Universal til en interessant l\u00f8sning for at skabe dynamiske brugergr\u00e6nseflader i WebAssembly og WebGL, hvor hundredvis af sm\u00e5 videoer kan afspejles samtidigt med minimal belastning af CPU'en. Indtil muligheden for at bruge SIMD-instruktioner i WebAssembly blev en realitet, var et s\u00e5dant pr\u00e6stationsniveau med traditionelle kodeker endnu ikke opn\u00e5eligt, hvorfor video baseret p\u00e5 teksturer kan anvendes i omr\u00e5der, hvor almindelig video ikke kan bruges. Der er i \u00f8jeblikket et kodeprojekt under forberedelse til offentligg\u00f8relse med yderligere optimeringer til video, herunder muligheden for at bruge I-rammer og P-rammer<\/a><\/noindex> med st\u00f8tte til adaptiv udfyldning (CR). <\/p>\n

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

Kilde: 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\udd47Google og Binomial \u00e5bnede koden for komprimeringssystemet Basis Universal | ProHoster","description":"Virksomhederne Google og Binomial har offentliggjort kildeteksten","canonical_url":"https:\/\/prohoster.info\/da\/blog\/news\/google-i-binomial-otkryli-kod-sistemy-szhatiya-tekstur-basis-universal","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"da_DK","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47Google \u0438 Binomial \u043e\u0442\u043a\u0440\u044b\u043b\u0438 \u043a\u043e\u0434 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0441\u0436\u0430\u0442\u0438\u044f \u0442\u0435\u043a\u0441\u0442\u0443\u0440 Basis Universal | ProHoster","og:description":"\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","og:url":"https:\/\/prohoster.info\/da\/blog\/news\/google-i-binomial-otkryli-kod-sistemy-szhatiya-tekstur-basis-universal","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2019-10-31T18:58:13+00:00","article:modified_time":"2019-10-31T18:58:13+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"34420","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":null,"schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-01-21 19:13:20","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-03-01 02:21:35","updated":"2026-01-21 19:13:20","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/posts\/34420","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/comments?post=34420"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/posts\/34420\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/media\/25932"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/media?parent=34420"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/categories?post=34420"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/tags?post=34420"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}