{"id":101103,"date":"2021-08-27T10:23:05","date_gmt":"2021-08-27T08:23:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/emulyator-risc-v-v-forme-pikselnogo-shejdera-pozvolivshij-zapustit-linux-v-vrchat"},"modified":"2021-08-27T10:23:05","modified_gmt":"2021-08-27T08:23:07","slug":"emulyator-risc-v-v-forme-pikselnogo-shejdera-pozvolivshij-zapustit-linux-v-vrchat","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/emulyator-risc-v-v-forme-pikselnogo-shejdera-pozvolivshij-zapustit-linux-v-vrchat","title":{"rendered":"Emulator RISC-V sub form\u0103 de shader pixel, care a permis rularea Linux \u00een VRChat","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Au fost publicate rezultatele experimentului privind organizarea lans\u0103rii Linux \u00een interiorul unui spa\u021biu 3D virtual din jocul online multiplayer VRChat, care permite \u00eenc\u0103rcarea de modele 3D cu propriile \u0219abloane. Pentru realizarea ideii propuse, a fost creat un emulator al arhitecturii RISC-V, care ruleaz\u0103 pe GPU sub form\u0103 de shader pixel (VRChat nu suport\u0103 shaderi computa\u021bionali \u0219i UAV). Codul emulatorului a fost publicat sub licen\u021ba MIT. <\/p>\n

Emulatorul se bazeaz\u0103 pe o implementare \u00een limbajul C, care a utilizat la r\u00e2ndul s\u0103u dezvolt\u0103rile unui emulator minimalist riscv-rust, dezvoltat \u00een limbajul Rust. Codul C preg\u0103tit este transformat \u00eentr-un shader pixel \u00een limbajul HLSL, potrivit pentru \u00eenc\u0103rcarea \u00een VRChat. Emulatorul ofer\u0103 suport complet pentru arhitectura setului de instruc\u021biuni rv32imasu, blocul de control al memoriei SV32 \u0219i un set minim de periferice (UART \u0219i temporizator). Func\u021bionalit\u0103\u021bile preg\u0103tite sunt suficiente pentru \u00eenc\u0103rcarea nucleului Linux 5.13.5 \u0219i a mediului de linie de comand\u0103 BusyBox, cu care se poate interac\u021biona direct din lumea virtual\u0103 VRChat.

\"Emulator<\/center>
\"Emulator<\/center> <\/p>\n

Emulatorul este implementat \u00een shader sub forma unei texturi dinamice personalizate (Unity Custom Render Texture), completat\u0103 cu scripturile Udon furnizate pentru VRChat, utilizate pentru a controla emulatorul \u00een timpul execu\u021biei sale. Con\u021binutul memoriei RAM \u0219i starea procesorului sistemului emulat sunt salvate sub form\u0103 de textur\u0103, cu dimensiunea de 2048×2048 pixel. Procesorul emulat func\u021bioneaz\u0103 la o frecven\u021b\u0103 de 250 kHz. Pe l\u00e2ng\u0103 Linux, \u00een emulator poate fi rulat \u0219i Micropython.

\"Emulator<\/center> <\/p>\n

Pentru a organiza stocarea permanent\u0103 a datelor cu suport pentru citire \u0219i scriere, este utilizat un truc legat de utilizarea unui obiect Camera, legat de o zon\u0103 dreptunghiular\u0103 generat\u0103 de shader \u0219i direc\u021bia de ie\u0219ire a texturii desenate c\u0103tre intrarea shaderului. Astfel, orice pixel scris \u00een procesul de execu\u021bie a shaderului pixel poate fi citit la procesarea cadrului urm\u0103tor. <\/p>\n

C\u00e2nd se aplic\u0103 shaderi pe pixel pentru fiecare pixel al texturii, se lanseaz\u0103 simultan o instan\u021b\u0103 separat\u0103 a shader-ului. Aceast\u0103 caracteristic\u0103 complic\u0103 semnificativ implementarea \u0219i necesit\u0103 o coordonare separat\u0103 a st\u0103rii \u00eentregului sistem emulator \u0219i o asociere a pozi\u021biei pixelului procesat cu starea CPU sau con\u021binutul RAM-ului sistemului emulator (fiecare pixel poate codifica 128 de bi\u021bi de informa\u021bie). Codul shader-ului necesit\u0103, de asemenea, includerea unui num\u0103r imens de verific\u0103ri, pentru simplificarea implement\u0103rii c\u0103ruia a fost utilizat preprocessatorul Perl perlpp.

\r\n \"Reda\u021bi\r\n
<\/div>\r\n <\/div><\/center>
\n
Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430 \u043f\u043e \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0430 Linux \u0432\u043d\u0443\u0442\u0440\u0438 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0433\u043e 3D-\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0430 \u043c\u043d\u043e\u0433\u043e\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u043e\u0439 online-\u0438\u0433\u0440\u044b VRChat, \u0434\u043e\u043f\u0443\u0441\u043a\u0430\u044e\u0449\u0435\u0439 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0443 3D-\u043c\u043e\u0434\u0435\u043b\u0435\u0439 \u0441\u043e \u0441\u0432\u043e\u0438\u043c\u0438 \u0448\u0435\u0439\u0434\u0435\u0440\u0430\u043c\u0438. \u0414\u043b\u044f \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0437\u0430\u0434\u0443\u043c\u0430\u043d\u043d\u043e\u0439 \u0438\u0434\u0435\u0438 \u0431\u044b\u043b \u0441\u043e\u0437\u0434\u0430\u043d \u044d\u043c\u0443\u043b\u044f\u0442\u043e\u0440 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b RISC-V, \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u043c\u044b\u0439 \u043d\u0430 \u0441\u0442\u043e\u0440\u043e\u043d\u0435 GPU \u0432 \u0432\u0438\u0434\u0435 \u043f\u0438\u043a\u0441\u0435\u043b\u044c\u043d\u043e\u0433\u043e (\u0444\u0440\u0430\u0433\u043c\u0435\u043d\u0442\u043d\u043e\u0433\u043e) \u0448\u0435\u0439\u0434\u0435\u0440\u0430 (VRChat \u043d\u0435 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u0432\u044b\u0447\u0438\u0441\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u0448\u0435\u0439\u0434\u0435\u0440\u044b \u0438 UAV). \u041a\u043e\u0434 \u044d\u043c\u0443\u043b\u044f\u0442\u043e\u0440\u0430 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 MIT. \u0412 \u043e\u0441\u043d\u043e\u0432\u0435 \u044d\u043c\u0443\u043b\u044f\u0442\u043e\u0440\u0430 \u0437\u0430\u043b\u043e\u0436\u0435\u043d\u0430 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":101104,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-101103","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\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\udd47 Emulator RISC-V sub form\u0103 de shader pe pixel, care a permis lansarea Linux \u00een VRChat | ProHoster","description":"Au fost publicate rezultatele experimentului privind organizarea lans\u0103rii Linux \u00een interiorul unui spa\u021biu 3D virtual al jocului online multiplayer VRChat, care permite \u00eenc\u0103rcarea de modele 3D cu propriile sale shaderi.","canonical_url":"https:\/\/prohoster.info\/ro\/blog\/news\/emulyator-risc-v-v-forme-pikselnogo-shejdera-pozvolivshij-zapustit-linux-v-vrchat","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"ro_RO","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\udd47\u042d\u043c\u0443\u043b\u044f\u0442\u043e\u0440 RISC-V \u0432 \u0444\u043e\u0440\u043c\u0435 \u043f\u0438\u043a\u0441\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u0448\u0435\u0439\u0434\u0435\u0440\u0430, \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0432\u0448\u0438\u0439 \u0437\u0430\u043f\u0443\u0441\u0442\u0438\u0442\u044c Linux \u0432 VRChat | ProHoster","og:description":"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430 \u043f\u043e \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0430 Linux \u0432\u043d\u0443\u0442\u0440\u0438 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0433\u043e 3D-\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0430 \u043c\u043d\u043e\u0433\u043e\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u043e\u0439 online-\u0438\u0433\u0440\u044b VRChat, \u0434\u043e\u043f\u0443\u0441\u043a\u0430\u044e\u0449\u0435\u0439 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0443 3D-\u043c\u043e\u0434\u0435\u043b\u0435\u0439 \u0441\u043e \u0441\u0432\u043e\u0438\u043c\u0438 \u0448\u0435\u0439\u0434\u0435\u0440\u0430\u043c\u0438.","og:url":"https:\/\/prohoster.info\/ro\/blog\/news\/emulyator-risc-v-v-forme-pikselnogo-shejdera-pozvolivshij-zapustit-linux-v-vrchat","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":"2021-08-27T08:23:07+00:00","article:modified_time":"2021-08-27T08:23:07+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"101103","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":null,"breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-08-27 08:26:07","updated":"2022-09-27 18:54:52","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts\/101103","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/comments?post=101103"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts\/101103\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/media\/101104"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/media?parent=101103"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/categories?post=101103"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/tags?post=101103"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}