{"id":6635,"date":"2026-04-13T11:50:55","date_gmt":"2026-04-13T11:50:55","guid":{"rendered":"http:\/\/the-codest.localhost\/dictionary\/pixel-shader\/"},"modified":"2026-04-13T11:50:55","modified_gmt":"2026-04-13T11:50:55","slug":"pikseliu-seseliavimas","status":"publish","type":"dictionary","link":"https:\/\/thecodest.co\/lt\/dictionary\/pixel-shader\/","title":{"rendered":"Pikseli\u0173 \u0161e\u0161\u0117liavimo priemon\u0117"},"content":{"rendered":"

Pikseli\u0173 \u0161e\u0161\u0117liavimo priemon\u0117<\/h1>\n

Pikseli\u0173 \u0161e\u0161\u0117liavimo programa, dar vadinama fragment\u0173 \u0161e\u0161\u0117liavimo programa, yra kompiuterio programa, kuri naudojama atskir\u0173 pikseli\u0173 spalvai ir kitiems kompiuterin\u0117s grafikos atributams valdyti. Tai specialaus tipo \u0161e\u0161\u0117liavimo programa, sukurta specialiai darbui su pikseliais, kurie yra ma\u017eiausi vaizdo ar ekrano vienetai. Pikseliniai \u0161e\u0161\u0117liai da\u017eniausiai naudojami \u0161iuolaikiniuose 3D grafikos varikliuose siekiant sukurti tikrovi\u0161k\u0105 ap\u0161vietim\u0105, \u0161e\u0161\u0117lius ir kitus vaizdo efektus.<\/p>\n

Pikseli\u0173 \u0161e\u0161\u0117liai veikia priimdami \u012fvest\u012f duomenys<\/a>, pavyzd\u017eiui, pikselio spalv\u0105 ir pad\u0117t\u012f, ir naudojant matematinius skai\u010diavimus bei algoritmus nustatyti galutin\u0119 to pikselio spalv\u0105 ir kitus atributus. \u0160ie skai\u010diavimai gali b\u016bti gana sud\u0117tingi ir apimti daugyb\u0119 \u012fvesties duomen\u0173, pavyzd\u017eiui, tekst\u016br\u0173, ap\u0161vietimo duomen\u0173 ir kitos informacijos apie vaizduojam\u0105 scen\u0105 ar objekt\u0105.<\/p>\n

Pikseli\u0173 \u0161e\u0161\u0117liai yra svarbi \u0161iuolaikin\u0117s grafikos programavimo dalis, nes jie leid\u017eia k\u016br\u0117jams kurti labai tikrovi\u0161k\u0105 ir vizualiai stulbinan\u010di\u0105 grafik\u0105. Manipuliuodami atskirais pikseliais, k\u016br\u0117jai gali kurti \u012fvairius efektus - nuo subtili\u0173 spalv\u0173 ir ap\u0161vietimo poky\u010di\u0173 iki sud\u0117ting\u0173 gamtos rei\u0161kini\u0173, pavyzd\u017eiui, vandens ir ugnies, imitacij\u0173.<\/p>\n

Pikseli\u0173 \u0161e\u0161\u0117liai paprastai ra\u0161omi specialia programavimo kalba, vadinama \u0161e\u0161\u0117li\u0173 kalba, kuri yra sukurta taip, kad b\u016bt\u0173 optimizuota konkre\u010diai grafikos programavimui naudojamai aparatinei ir programinei \u012frangai ir platformoms. Da\u017eniausiai naudojamos \u0161ios \u0161e\u0161\u0117liavimo kalbos: HLSL, GLSL ir Cg.<\/p>\n

Apskritai pikseli\u0173 \u0161e\u0161\u0117liai yra esminis \u0161iuolaikin\u0117s grafikos programavimo \u012frankis, leid\u017eiantis k\u016br\u0117jams kurti labai tikrovi\u0161k\u0105 ir vizualiai stulbinan\u010di\u0105 grafik\u0105, kuri\u0105 galima naudoti \u012fvairiose srityse - nuo vaizdo \u017eaidim\u0173 iki mokslini\u0173 simuliacij\u0173 ir virtualios realyb\u0117s aplink\u0173.<\/p>","protected":false},"excerpt":{"rendered":"

Su\u017einokite apie pikseli\u0173 \u0161e\u0161\u0117lius ir tai, kaip jie valdo atskir\u0173 pikseli\u0173 spalv\u0105 ir atributus kompiuterin\u0117je grafikoje. Tai b\u016btina \u0161iuolaikin\u0117s grafikos programavimui.<\/p>","protected":false},"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-6635","dictionary","type-dictionary","status-publish","hentry"],"acf":[],"yoast_head":"\nPixel Shader - The Codest<\/title>\n<meta name=\"description\" content=\"Learn about pixel shaders and how they manipulate color and attributes of individual pixels in computer graphics. 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