{"id":78262,"date":"2020-04-18T07:42:10","date_gmt":"2020-04-18T05:42:10","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/predstavlen-kwinft-fork-kwin-sfokusirovannyj-na-wayland"},"modified":"2020-04-18T07:42:10","modified_gmt":"2020-04-18T05:42:10","slug":"predstavlen-kwinft-fork-kwin-sfokusirovannyj-na-wayland","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/predstavlen-kwinft-fork-kwin-sfokusirovannyj-na-wayland","title":{"rendered":"P\u0159edstaven KWinFT, fork KWin zam\u011b\u0159en\u00fd na Wayland","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Roman Gilg, <noindex><a rel=\"nofollow\" href=\"https:\/\/subdiff.org\/projects\/\">\u00fa\u010dastn\u00edc\u00ed se<\/a><\/noindex> v\u00fdvoje KDE, Wayland, Xwayland a X Server, <noindex><a rel=\"nofollow\" href=\"https:\/\/subdiff.org\/blog\/2020\/the-k-win-ft-project\/\">p\u0159edstavil<\/a><\/noindex> projekt <noindex><a rel=\"nofollow\" href=\"https:\/\/gitlab.com\/kwinft\/kwinft\">KWinFT<\/a><\/noindex> (KWin Fast Track), kter\u00fd vyv\u00edj\u00ed flexibiln\u00ed a snadno pou\u017eiteln\u00fd kompozitn\u00ed spr\u00e1vce oken pro Wayland a X11, zalo\u017een\u00fd na k\u00f3du <noindex><a rel=\"nofollow\" href=\"https:\/\/userbase.kde.org\/KWin\">KWin<\/a><\/noindex>. Krom\u011b spr\u00e1vce oken projekt tak\u00e9 rozv\u00edj\u00ed knihovnu <noindex><a rel=\"nofollow\" href=\"https:\/\/gitlab.com\/kwinft\/wrapland\">wrapland<\/a><\/noindex> s implementac\u00ed obalov\u00e9ho rozhran\u00ed nad libwayland pro Qt\/C++, kter\u00e1 pokra\u010duje ve v\u00fdvoji  <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/KDE\/kwayland\">KWayland<\/a><\/noindex>, ale zbavenou vazby na Qt. K\u00f3d je distribuov\u00e1n pod licencemi GPLv2 a LGPLv2.<\/p>\n<p>C\u00edlem projektu je p\u0159epracov\u00e1n\u00ed KWin a KWayland s vyu\u017eit\u00edm<br \/>\nmodern\u00edch technologi\u00ed a v\u00fdvojov\u00fdch praktik, kter\u00e9 umo\u017e\u0148uj\u00ed urychlit rozvoj projektu, prov\u00e9st refaktoring k\u00f3du, p\u0159idat optimalizace a zjednodu\u0161it p\u0159id\u00e1v\u00e1n\u00ed z\u00e1kladn\u00edch novinek, jejich\u017e integrace do KWin je v aktu\u00e1ln\u00ed podob\u011b slo\u017eit\u00e1. KWinFT a Wrapland mohou b\u00fdt pou\u017eity pro transparentn\u00ed n\u00e1hradu KWin a KWayland, ale nejsou omezeny r\u00e1mcem, kter\u00fd nalo\u017e\u00ed KWin mnoha produkt\u016fm, zachov\u00e1n\u00ed pln\u00e9 kompatibility s nimi\u017e je prioritou br\u00e1n\u00edc\u00ed pokroku novinek.<\/p>\n<p>V KWinFT maj\u00ed v\u00fdvoj\u00e1\u0159i voln\u00e9 ruce a mohou experimentovat s nov\u00fdmi mo\u017enostmi, p\u0159i\u010dem\u017e zajist\u00ed stabilitu d\u00edky vyu\u017eit\u00ed modern\u011bj\u0161\u00edch v\u00fdvojov\u00fdch technik. Nap\u0159\u00edklad pro testov\u00e1n\u00ed k\u00f3du KWinFT je pou\u017eita sada pro kontinu\u00e1ln\u00ed integraci, zahrnuj\u00edc\u00ed kontrolu r\u016fzn\u00fdmi lintry, automatick\u00e9 vytv\u00e1\u0159en\u00ed sestav a roz\u0161\u00ed\u0159en\u00e9 testov\u00e1n\u00ed. Pokud jde o v\u00fdvoj funk\u010dnosti, v KWinFT bude hlavn\u00ed d\u016fraz kladen na zaji\u0161t\u011bn\u00ed kvalitn\u00ed a pln\u00e9 podpory protokolu<br \/>\nWayland, v\u010detn\u011b p\u0159epracov\u00e1n\u00ed architektonick\u00fdch zvl\u00e1\u0161tnost\u00ed KWin, kter\u00e9 zt\u011b\u017euj\u00ed integraci s Wayland.<\/p>\n<p>Mezi ji\u017e p\u0159idan\u00fdmi experiment\u00e1ln\u00edmi novinkami v KWinFT lze zm\u00ednit:<\/p>\n<ul>\n<li class=\"l\"> P\u0159epracovan\u00fd proces kompozice, kter\u00fd v\u00fdrazn\u011b zlep\u0161il vykreslov\u00e1n\u00ed obsahu \u0159\u00edzen\u00e9ho X11 a Wayland. D\u00e1le byl p\u0159id\u00e1n \u010dasova\u010d pro minimalizaci zpo\u017ed\u011bn\u00ed mezi vytvo\u0159en\u00edm obrazu a jeho zobrazen\u00edm na obrazovce.\n<li class=\"l\"> Bylo implementov\u00e1no roz\u0161\u00ed\u0159en\u00ed protokolu Wayland &#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/cgit.freedesktop.org\/wayland\/wayland-protocols\/tree\/stable\/viewporter\">viewporter<\/a><\/noindex>&#171;, kter\u00e9 umo\u017e\u0148uje klientovi prov\u00e1d\u011bt akce pro \u0161k\u00e1lov\u00e1n\u00ed a o\u0159ez\u00e1v\u00e1n\u00ed okraj\u016f plochy na stran\u011b serveru. V kombinaci s n\u00e1sleduj\u00edc\u00edm v\u00fdznamn\u00fdm vyd\u00e1n\u00edm XWayland roz\u0161\u00ed\u0159en\u00ed umo\u017en\u00ed emulovat zm\u011bnu rozli\u0161en\u00ed obrazovky pro star\u00e9 hry.\n<li class=\"l\"> \u00dapln\u00e1 podpora ot\u00e1\u010den\u00ed a zrcadlen\u00ed v\u00fdstupu pro sezen\u00ed zalo\u017een\u00e1 na Waylandu.\n<\/ul>\n<p>Wrapland poskytuje rozhran\u00ed navr\u017een\u00e9 ve stylu Qt, kter\u00e9 nab\u00edz\u00ed p\u0159\u00edstup k funkc\u00edm libwayland v u\u017eivatelsky p\u0159\u00edv\u011btiv\u00e9 podob\u011b pro projekty v C++. P\u016fvodn\u011b bylo pl\u00e1nov\u00e1no vyv\u00edjet Wrapland jako fork KWayland, ale z d\u016fvodu neuspokojiv\u00e9ho stavu k\u00f3du KWayland je nyn\u00ed pova\u017eov\u00e1n za projekt k \u00fapln\u00e9 p\u0159epracov\u00e1n\u00ed KWayland. Nejv\u00fdznamn\u011bj\u0161\u00edm rozd\u00edlem mezi Wrapland a KWayland je odstran\u011bn\u00ed vazby na Qt a mo\u017enost pou\u017e\u00edv\u00e1n\u00ed samostatn\u011b bez instalace Qt. V budoucnu bude Wrapland moci b\u00fdt pou\u017eito jako univerz\u00e1ln\u00ed knihovna s API pro C++, zbavuj\u00edc\u00ed v\u00fdvoj\u00e1\u0159e nutnosti pou\u017e\u00edvat C API libwayland.<\/p>\n<p>Hotov\u00e9 bal\u00ed\u010dky byly vytvo\u0159eny pro u\u017eivatele Manjaro Linux. Pro aktivaci KWinFT sta\u010d\u00ed nainstalovat z repozit\u00e1\u0159e kwinft, a pro n\u00e1vrat na standardn\u00ed KWin \u2014 nainstalovat bal\u00ed\u010dek kwin. Pou\u017eit\u00ed Wrapland nen\u00ed omezeno na KDE, nap\u0159\u00edklad byla p\u0159ipravena implementace klienta pro pou\u017e\u00edvan\u00e9 v <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/swaywm\/wlroots\">wlroots<\/a><\/noindex> protokolu pro \u0159\u00edzen\u00ed v\u00fdstupu, kter\u00fd umo\u017e\u0148uje pou\u017e\u00edt KScreen pro nastaven\u00ed v\u00fdstupu na kompozi\u010dn\u00edch serverech zalo\u017een\u00fdch na wlroots (<noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52239\">Sway<\/a><\/noindex>,  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52586\">Wayfire<\/a><\/noindex>).<\/p>\n<p>Mezit\u00edm, <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/tildearrow\/kwin-lowlatency\/releases\">pokra\u010duj\u00ed<\/a><\/noindex> publikovat aktualizace projektu <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/tildearrow\/kwin-lowlatency\">KWin-lowlatency<\/a><\/noindex>, tvo\u0159\u00edc\u00ed edici kompozi\u010dn\u00edho spr\u00e1vce KWin s patchemi pro zv\u00fd\u0161en\u00ed odezvy rozhran\u00ed a opravu n\u011bkter\u00fdch probl\u00e9m\u016f souvisej\u00edc\u00edch s rychlost\u00ed reakce na u\u017eivatelsk\u00e9 akce, jako je zpomalen\u00ed vstupu. Pro zaji\u0161t\u011bn\u00ed ochrany proti vzniku trh\u00e1n\u00ed obrazu (tearing) bez negativn\u00edho vlivu na odezvu, krom\u011b DRM VBlank, KWin-lowlatency podporuje pou\u017eit\u00ed glXWaitVideoSync, glFinish nebo NVIDIA VSync (p\u016fvodn\u011b implementovan\u00e1 ochrana proti trh\u00e1n\u00ed v KWin je realizov\u00e1na s pou\u017eit\u00edm \u010dasova\u010de a m\u016f\u017ee v\u00e9st k velk\u00fdm zpo\u017ed\u011bn\u00edm (a\u017e 50 ms) v\u00fdstupu a v d\u016fsledku toho k opo\u017ed\u011bn\u00ed reakce na vstup). Nov\u00e9 verze KWin-lowlatency mohou b\u00fdt pou\u017eity m\u00edsto v\u00fdchoz\u00edho kompozi\u010dn\u00edho serveru v KDE Plasma 5.18.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Zdroj: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52754\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0420\u043e\u043c\u0430\u043d \u0413\u0438\u043b\u0433 (Roman Gilg), \u0443\u0447\u0430\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0439 \u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 KDE, Wayland, Xwayland \u0438 X Server, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b \u043f\u0440\u043e\u0435\u043a\u0442 KWinFT (KWin Fast Track), \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0438\u0439 \u0433\u0438\u0431\u043a\u0438\u0439 \u0438 \u043f\u0440\u043e\u0441\u0442\u043e\u0439 \u0432 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u043a\u043e\u043c\u043f\u043e\u0437\u0438\u0442\u043d\u044b\u0439 \u043e\u043a\u043e\u043d\u043d\u044b\u0439 \u043c\u0435\u043d\u0435\u0434\u0436\u0435\u0440 \u0434\u043b\u044f Wayland \u0438 X11, \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043d\u0430 \u043a\u043e\u0434\u043e\u0432\u043e\u0439 \u0431\u0430\u0437\u0435 KWin. \u041f\u043e\u043c\u0438\u043c\u043e \u043e\u043a\u043e\u043d\u043d\u043e\u0433\u043e \u043c\u0435\u043d\u0435\u0434\u0436\u0435\u0440\u0430 \u043f\u0440\u043e\u0435\u043a\u0442 \u0442\u0430\u043a\u0436\u0435 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443 wrapland \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u043e\u0431\u0432\u044f\u0437\u043a\u0438 \u043d\u0430\u0434 libwayland \u0434\u043b\u044f Qt\/C++, 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