{"id":120156,"date":"2024-10-12T19:09:18","date_gmt":"2024-10-12T17:09:18","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-wayland-protocols-1-38"},"modified":"2026-02-13T12:39:20","modified_gmt":"2026-02-13T10:39:20","slug":"vypusk-wayland-protocols-1-38","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/vypusk-wayland-protocols-1-38","title":{"rendered":"Vydanie Wayland-Protocols 1.38.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Bol k dispoz\u00edcii nov\u00fd bal\u00edk wayland-protocols 1.38, ktor\u00fd obsahuje s\u00fabor protokolov a roz\u0161\u00edren\u00ed dopl\u0148uj\u00facich z\u00e1kladn\u00fd protokol Wayland a poskytuj\u00facich mo\u017enosti potrebn\u00e9 na vytv\u00e1ranie kompozitn\u00fdch serverov a pou\u017e\u00edvate\u013esk\u00fdch prostred\u00ed.     <\/p>\n<p>V\u0161etky protokoly prech\u00e1dzaj\u00fa postupne tromi f\u00e1zami \u2014 v\u00fdvoj, testovanie a stabiliz\u00e1cia. Po ukon\u010den\u00ed f\u00e1zy v\u00fdvoja (kateg\u00f3ria \u201eunstable\u201c) je protokol umiestnen\u00fd do vetvy \u201estaging\u201c a ofici\u00e1lne zaraden\u00fd do s\u00faboru wayland-protocols, a po ukon\u010den\u00ed testovania je presunut\u00fd do kateg\u00f3rie stabiln\u00fdch. Protokoly z kateg\u00f3rie \u201estaging\u201c je mo\u017en\u00e9 vyu\u017e\u00edva\u0165 v kompozitn\u00fdch serveroch a klientoch, kde je potrebn\u00e1 s\u00favisiaca funkcionalita. Na rozdiel od kateg\u00f3rie \u201eunstable\u201c je v \u201estaging\u201c zak\u00e1zan\u00e1 ak\u00e1ko\u013evek zmena, ktor\u00e1 by naru\u0161ila kompatibilitu, av\u0161ak v pr\u00edpade zistenia probl\u00e9mov a nedostatkov po\u010das testovania nie je vyl\u00fa\u010den\u00e1 v\u00fdmena protokolu za nov\u00fa v\u00fdznamn\u00fa verziu alebo in\u00e9 roz\u0161\u00edrenie Wayland.    <\/p>\n<p>V novej verzii bola do kateg\u00f3rie \u201estaging\u201c pridan\u00e1 protokoly:  <\/p>\n<ul>\n<li class=\"l\"> xdg-system-bell \u2014 umo\u017e\u0148uje vyda\u0165 syst\u00e9mov\u00fd sign\u00e1l, ktor\u00fd m\u00f4\u017ee by\u0165 pou\u017eit\u00fd ako varovanie v emul\u00e1tore termin\u00e1lov. Forma v\u00fdstupu sign\u00e1lu je ur\u010den\u00e1 na uv\u00e1\u017eenie kompozitn\u00e9ho spr\u00e1vcu, m\u00f4\u017ee to by\u0165 nielen zvuk, ale aj vizu\u00e1lna reakcia.\n<li class=\"l\"> fifo \u2014 implementuje FIFO mechanizmus (prv\u00fd pri\u0161iel \u2014 prv\u00fd odi\u0161iel) spracovania fronty aktualiz\u00e1cie obsahu zobrazen\u00e9ho povrchu. Z praktick\u00e9ho h\u013eadiska protokol umo\u017e\u0148uje pri v\u00fdstupe vyu\u017ei\u0165 \u010dakanie na dokon\u010denie vertik\u00e1lneho vypr\u00e1zdnenia (vblank) namiesto pou\u017eitia callback-volan\u00ed pri ka\u017edej pripravenosti zobrazi\u0165 nov\u00fd sn\u00edmok, \u010do rie\u0161i probl\u00e9m s vysokou z\u00e1\u0165a\u017eou GPU pri pou\u017eit\u00ed VSync.\n<li class=\"l\"> commit-timing \u2014 umo\u017e\u0148uje viaza\u0165 \u010dasov\u00e9 obmedzenie na obsah povrchu (kompozitn\u00fd server by mal zobrazi\u0165 zmenu obsahu \u010do najsk\u00f4r, ale nie sk\u00f4r).      <\/ul>\n<p>V s\u00fa\u010dasnosti obsahuje wayland-protocols nasleduj\u00face stabiln\u00e9 protokoly, ktor\u00e9 zais\u0165uj\u00fa sp\u00e4tn\u00fa kompatibilitu:  <\/p>\n<ul>\n<li class=\"l\"> &#171;viewporter&#187; &#8212; umo\u017e\u0148uje klientovi vykon\u00e1va\u0165 akcie pri \u0161k\u00e1lovan\u00ed a orez\u00e1van\u00ed okrajov plochy na strane servera.   <\/li>\n<li class=\"l\"> &#171;presentation-time&#187; &#8212; zabezpe\u010duje zobrazovanie videa.  <\/li>\n<li class=\"l\"> &#171;xdg-shell&#187; &#8212; rozhranie na vytv\u00e1ranie a interakciu s plochami ako s oknami, \u010do umo\u017e\u0148uje ich pres\u00favanie na obrazovke, minimaliz\u00e1ciu, maximaliz\u00e1ciu, zmenu ve\u013ekosti at\u010f.  <\/li>\n<li class=\"l\"> \u2014 zabezpe\u010duje zdie\u013eanie viacer\u00fdch grafick\u00fdch kariet pomocou technol\u00f3gie DMA-BUF (umo\u017e\u0148uje vytvori\u0165 wl_buffer na z\u00e1klade DMA-BUF).   <\/li>\n<li class=\"l\">  \u2014 organiz\u00e1cia vstupu z grafick\u00fdch tabletov.  <\/li>\n<\/ul>\n<p>Protokoly testovan\u00e9 v branchi :  <\/p>\n<ul>\n<li class=\"l\"> drm-lease \u2014 poskytuje zdroje potrebn\u00e9 na vytvorenie stereoobrazu s r\u00f4znymi vyrovn\u00e1vac\u00edmi pam\u00e4\u0165ami pre \u013eav\u00e9 a prav\u00e9 oko pri v\u00fdstupe na VR prilby.   <\/li>\n<li class=\"l\"> \u2014 ur\u010duje prostriedky na zablokovanie rel\u00e1cie, napr\u00edklad po\u010das pr\u00e1ce spo\u013eahlivej obrazovky alebo v\u00fdstupu autentifika\u010dn\u00e9ho dial\u00f3gu.    <\/li>\n<li class=\"l\"> \u2014 umo\u017e\u0148uje vytv\u00e1ra\u0165 jednopixelov\u00e9 vyrovn\u00e1vacie pam\u00e4te, ktor\u00e9 obsahuj\u00fa \u0161tyri 32-bitov\u00e9 hodnoty RGBA.  <\/li>\n<li class=\"l\"> \u2014 umo\u017e\u0148uje pren\u00e1\u0161a\u0165 zaostrenie medzi r\u00f4znymi povrchmi prvej \u00farovne (napr\u00edklad pomocou xdg-activation m\u00f4\u017eete presun\u00fa\u0165 zaostrenie z jednej aplik\u00e1cie na in\u00fa).    <\/li>\n<li class=\"l\"> content-type \u2014 umo\u017e\u0148uje klientom pren\u00e1\u0161a\u0165 kompozitn\u00e9mu <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sk\/server\/dts-shicago\/\"   title=\"serveru\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2945\">serveru<\/a> inform\u00e1cie o zobrazovanom obsahu, ktor\u00e9 m\u00f4\u017eu by\u0165 pou\u017eit\u00e9 na optimaliz\u00e1ciu spr\u00e1vania sa s oh\u013eadom na obsah, napr\u00edklad nastaveniu \u0161pecifick\u00fdch DRM vlastnost\u00ed, ako je . Ohl\u00e1sila sa podpora nasleduj\u00facich typov obsahu: none (\u017eiadne inform\u00e1cie o type d\u00e1t), photo (v\u00fdstup digit\u00e1lnych fotografi\u00ed, vy\u017eaduj\u00faci minim\u00e1lne spracovanie), video (video alebo anim\u00e1cia, vy\u017eaduje presnej\u0161iu synchroniz\u00e1ciu, aby sa predi\u0161lo trhaniu) a game (sp\u00fa\u0161\u0165anie hier, vy\u017eaduje v\u00fdstup s minim\u00e1lnym oneskoren\u00edm).    <\/li>\n<li class=\"l\"> ext-idle-notify \u2014 umo\u017e\u0148uje kompozitn\u00fdm serverom posiela\u0165 klientom ozn\u00e1menia o neakt\u00edvnosti u\u017e\u00edvate\u013ea, \u010do sa m\u00f4\u017ee vyu\u017ei\u0165 na aktiv\u00e1ciu \u010fal\u0161\u00edch re\u017eimov \u00faspory energie po ur\u010ditej dobe neakt\u00edvnosti.            <\/li>\n<li class=\"l\"> tearing-control \u2014 umo\u017e\u0148uje vypn\u00fa\u0165 vo fullscreen aplik\u00e1ci\u00e1ch vertik\u00e1lnu synchroniz\u00e1ciu (VSync) s impulzom na potla\u010denie sn\u00edmok, pou\u017e\u00edvan\u00fa na ochranu pred objaven\u00edm sa trhl\u00edn pri v\u00fdstupe (tearing). V multimedi\u00e1lnych aplik\u00e1ci\u00e1ch s\u00fa artefakty sp\u00f4soben\u00e9 trhnut\u00edm ne\u017eiad\u00facim efektom, ale v hern\u00fdch programoch sa s artefaktmi d\u00e1 zmieri\u0165, ak boj s nimi vedie k dodato\u010dn\u00fdm oneskoreniam.  <\/li>\n<li class=\"l\"> ext-foreign-toplevel-list \u2014 z\u00edskavanie inform\u00e1ci\u00ed o povrchoch umiestnen\u00fdch na najvy\u0161\u0161ej \u00farovni (toplevel), ktor\u00e9 umo\u017e\u0148uj\u00fa organizova\u0165 ukotvenie okien nad in\u00fdm obsahom, napr\u00edklad na pripojenie vlastn\u00fdch panelov a prep\u00edna\u010dov okien.     <\/li>\n<li class=\"l\"> security-context \u2014 umo\u017e\u0148uje identifikova\u0165 klientov, ktor\u00ed pou\u017e\u00edvaj\u00fa izol\u00e1ciu sandboxu. Klient m\u00f4\u017ee zaregistrova\u0165 nov\u00e9 pripojenie k kompozitn\u00e9mu serveru na b\u00e1ze Wayland a pripoji\u0165 k nemu kontext zabezpe\u010denia, po ktorom v s\u00falade s uveden\u00fdm kontextom kompozitn\u00fd mana\u017e\u00e9r obmedz\u00ed mo\u017enosti dostupn\u00e9 pre ustanoven\u00e9 pripojenie.    <\/li>\n<li class=\"l\"> cursor-shape \u2014 alternat\u00edvny sp\u00f4sob nastavenia vzh\u013eadu kurzora, ktor\u00fd spo\u010d\u00edva v prenose s\u00e9rie obr\u00e1zkov kurzora namiesto viazania na povrch (wl_surface).    <\/li>\n<li class=\"l\"> &#171;ext-transient-seat&#187; &#8212; ur\u010den\u00fd na vytv\u00e1ranie do\u010dasn\u00fdch nez\u00e1visl\u00fdch rel\u00e1ci\u00ed (seat), ktor\u00e9 s\u00fa navrhnut\u00e9 na pou\u017eitie spolu s virtu\u00e1lnymi vstupn\u00fdmi zariadeniami. Napr\u00edklad pri implement\u00e1cii mo\u017enosti pripojenia k <a href=\"https:\/\/prohoster.info\/sk\/vps\/\"  data-wpil-monitor-id=\"3198\">dia\u013ekovej pracovnej ploche<\/a> protokol umo\u017e\u0148uje vytvori\u0165 pre ka\u017ed\u00e9ho pou\u017e\u00edvate\u013ea samostatn\u00e9 sedenie s virtu\u00e1lnou kl\u00e1vesnicou a my\u0161ou.    <\/li>\n<li class=\"l\"> \u201exdg-toplevel-drag\u201c \u2014 roz\u0161iruje mechanizmus \u201edrag &amp; drop\u201c mo\u017enos\u0165ou pripojenia okien najvy\u0161\u0161ej \u00farovne k oper\u00e1cii pres\u00favania, \u010do m\u00f4\u017ee by\u0165 pou\u017eit\u00e9 napr\u00edklad na organiz\u00e1ciu pres\u00favania my\u0161ou panelov n\u00e1strojov alebo z\u00e1lo\u017eiek prehliada\u010da. Nov\u00fd protokol umo\u017e\u0148uje vytv\u00e1ra\u0165 odp\u00e1jate\u013en\u00e9 \u010dasti okna, ktor\u00e9 pri pres\u00favan\u00ed z tohto okna sa st\u00e1vaj\u00fa nov\u00fdmi oknami a m\u00f4\u017eu sa pres\u00fava\u0165 nad existuj\u00facim oknom pred op\u00e4tovn\u00fdm pripojen\u00edm.    <\/li>\n<li class=\"l\"> \u201exdg-dialog\u201c \u2014 umo\u017e\u0148uje prira\u010fova\u0165 povrchom najvy\u0161\u0161ej \u00farovne vlastnosti \u0161pecifick\u00e9 pre dial\u00f3gov\u00e9 okn\u00e1, napr\u00edklad je mo\u017en\u00e9 vytv\u00e1ra\u0165 mod\u00e1lne dial\u00f3gy, ktor\u00e9 blokuj\u00fa interakciu pou\u017e\u00edvate\u013ea s ostatnou \u010das\u0165ou rozhrania.      <\/li>\n<li class=\"l\"> \u201elinux-drm-syncobj\u201c \u2014 poskytuje n\u00e1stroje na explicitn\u00fa synchroniz\u00e1ciu bufrov pomocou DRM (Direct Rendering Manager) synchroniza\u010dn\u00fdch objektov. Predpoklad\u00e1 sa, \u017ee v kontexte synchroniz\u00e1cie pri vykres\u013eovan\u00ed do bufra navrhovan\u00fd protokol zlep\u0161\u00ed pr\u00e1cu s ovl\u00e1da\u010dmi zalo\u017een\u00fdmi na grafick\u00fdch API Vulkan a OpenGL (realiz\u00e1cia je zalo\u017een\u00e1 na spracovate\u013eoch z ovl\u00e1da\u010dov). Nov\u00fd protokol umo\u017e\u0148uje overi\u0165, \u017ee oper\u00e1cia vykres\u013eovania do bufra bola dokon\u010den\u00e1 predt\u00fdm, ako kompozitn\u00fd spr\u00e1vca zobrazi\u0165 tento bufor.    <\/li>\n<li class=\"l\"> alpha-modifier, ktor\u00fd umo\u017e\u0148uje klientom meni\u0165 \u00farove\u0148 prieh\u013eadnosti povrchu a pres\u00fava\u0165 oper\u00e1cie zabezpe\u010denia prieh\u013eadnosti na stranu zlo\u017een\u00e9ho servera, ktor\u00fd m\u00f4\u017ee tieto oper\u00e1cie preposla\u0165 KMS.\n<li class=\"l\"> xdg-toplevel-icon \u2014 viazanie ikony na okno najvy\u0161\u0161ej \u00farovne.    <\/li>\n<li class=\"l\">   ext-image-capture-source a ext-image-copy-capture \u2014 organiz\u00e1cia zachyt\u00e1vania obsahu zobrazen\u00e9ho na obrazovke.    <\/ul>\n<p>Protokoly vyv\u00edjan\u00e9 v vetve \u201eunstable\u201c:    <\/p>\n<ul>\n<li class=\"l\">  \u201efullscreen-shell\u201c \u2014 spr\u00e1va pr\u00e1ce v re\u017eime celej obrazovky.  <\/li>\n<li class=\"l\">  \u201einput-method\u201c \u2014 spracovanie met\u00f3d vstupu.  <\/li>\n<li class=\"l\">  \u201eidle-inhibit\u201c \u2014 zablokovanie spustenia \u0161etri\u010da obrazovky (obrazovkov\u00e1 \u0161abl\u00f3na).  <\/li>\n<li class=\"l\">  \u201einput-timestamps\u201c \u2014 \u010dasov\u00e9 pe\u010diatky pre udalosti vstupu.  <\/li>\n<li class=\"l\"> \u201ekeyboard-shortcuts-inhibit\u201c \u2014 spr\u00e1va prichytenia kl\u00e1vesov\u00fdch kombin\u00e1ci\u00ed a hor\u00facich kl\u00e1vesov.    <\/li>\n<li class=\"l\"> \u201elinux-explicit-synchronization\u201c \u2014 \u0161pecifick\u00fd pre Linux mechanizmus synchroniz\u00e1cie bufrov viazan\u00fd na povrch.      <\/li>\n<li class=\"l\">  \u201epointer-gestures\u201c \u2014 spr\u00e1va z dotykov\u00fdch obrazoviek.    <\/li>\n<li class=\"l\">  \u201epointer constraints\u201c \u2014 obmedzenia ukazovate\u013eov (zcela\u010dnenie).  <\/li>\n<li class=\"l\"> \u201eprimary-selection\u201c \u2014 na podobn\u00fd sp\u00f4sob ako X11 zabezpe\u010duje pr\u00e1cu prim\u00e1rneho schr\u00e1nky (primary selection), vlo\u017eenie inform\u00e1ci\u00ed z ktorej sa zvy\u010dajne uskuto\u010d\u0148uje prostrednou tla\u010didlom my\u0161i.    <\/li>\n<li class=\"l\">  \u201erelative pointer events\u201c \u2014 relat\u00edvne udalosti ukazovate\u013ea.    <\/li>\n<li class=\"l\">  \u201etext-input\u201c \u2014 organiz\u00e1cia vkladania textu.   <\/li>\n<li class=\"l\">  \u201exdg-foreign\u201c \u2014 rozhranie na interakciu s povrchmi \u201esusedn\u00e9ho\u201c klienta.  <\/li>\n<li class=\"l\">  \u201exdg-decoration\u201c \u2014 vykres\u013eovanie dekor\u00e1ci\u00ed okien na strane servera.  <\/li>\n<li class=\"l\">  \u201exdg-output\u201c \u2014 \u010fal\u0161ie inform\u00e1cie o v\u00fdstupnom zariaden\u00ed (pou\u017e\u00edva sa pre zlomkov\u00e9 \u0161k\u00e1lovanie).  <\/li>\n<li class=\"l\">  \u201exwayland-keyboard-grab\u201c \u2014 zachytenie vstupu v aplik\u00e1ci\u00e1ch XWayland.      <\/ul>\n<p>\u010eal\u0161\u00edm zauj\u00edmav\u00fdm n\u00e1vrhom zamestnanca spolo\u010dnosti Valve je prida\u0165 \u010fal\u0161iu f\u00e1zu prechodu nov\u00fdch protokolov Wayland \u2014 \u201eexperimental\u201c, ktor\u00e1 umo\u017en\u00ed zn\u00ed\u017ei\u0165 bari\u00e9ru na zaradenie protokolov do s\u00faboru Wayland-Protocols a ur\u00fdchli\u0165 ich implement\u00e1ciu. V s\u00fa\u010dasnosti je potrebn\u00e9 na zaradenie protokolu do f\u00e1zy staging vytvori\u0165 podporuj\u00faci t\u00edm a z\u00edska\u0165 ur\u010dit\u00e9 mno\u017estvo potvrden\u00ed (ACK) od \u00fa\u010dastn\u00edkov recenzovania. V \u201eexperimental\u201c sa navrhuje prij\u00edma\u0165 protokol nie na z\u00e1klade z\u00edskania potvrden\u00ed, ale na z\u00e1klade nepripomienok (NACK) v priebehu dvojt\u00fd\u017ed\u0148ov\u00e9ho recenzn\u00e9ho obdobia. Ak je to potrebn\u00e9, \u00fa\u010dastn\u00edci recenzovania m\u00f4\u017eu pred\u013a\u017ei\u0165 diskusiu e\u0161te na \u010fal\u0161ie dva t\u00fd\u017edne, a to nastaven\u00edm stavu \u201eWAIT\u201c.    <\/p>\n<p>V f\u00e1ze \u201eexperimental\u201c sa tie\u017e navrhuje povoli\u0165 zmeny naru\u0161uj\u00face kompatibilitu a pridanie \u201esurov\u00fdch\u201c protokolov, ktor\u00e9 bude mo\u017en\u00e9 postupne doladi\u0165 na po\u017eadovan\u00fa \u00farove\u0148. Tak\u017ee f\u00e1za \u201eexperimental\u201c umo\u017en\u00ed r\u00fdchlo predstavi\u0165 v\u00fdvoj\u00e1rom nov\u00e9 prototypy protokolov, stimulova\u0165 ich implement\u00e1ciu v existuj\u00facich projektoch a z\u00edska\u0165 sp\u00e4tn\u00fa v\u00e4zbu od pou\u017e\u00edvate\u013eov. Navrhovan\u00fd proces by mal zbavi\u0165 v\u00fdvoj\u00e1rov protokolov dlh\u00fdch diskusi\u00ed a administrat\u00edvnych prek\u00e1\u017eok pred prijat\u00edm do s\u00faboru Wayland-Protocols. Napr\u00edklad protokoly xdg-system-bell, fifo a commit-timing zahrnut\u00e9 v s\u00fa\u010dasnej verzii boli diskutovan\u00e9 viac ako rok.<br \/>\n<br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=62038\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0430\u043a\u0435\u0442\u0430 wayland-protocols 1.38, \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0449\u0435\u0433\u043e \u043d\u0430\u0431\u043e\u0440 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u043e\u0432 \u0438 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u0439, \u0434\u043e\u043f\u043e\u043b\u043d\u044f\u044e\u0449\u0438\u0445 \u0431\u0430\u0437\u043e\u0432\u044b\u0439 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b Wayland \u0438 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