Clipping vs Culling
Cripping thiab culling yog cov txheej txheem uas tau siv dav hauv cov ntaub ntawv. Lawv kuj tau siv hauv computer graphics thaum tsim lub computer game. Raws li ob txoj kev zoo sib xws, tib neeg feem ntau tsis meej pem txog lawv qhov sib txawv. Kab lus no yuav qhia txog cov yam ntxwv ntawm ob lub ntsiab lus no kom paub meej rau txhua tus nyeem.
Culling yog cov txheej txheem uas tshem tawm cov khoom tsis pom los ntawm lub koob yees duab ntawm lub thav duab, yog li tawm tsawg dua polygons rau lub cav ntawv ua haujlwm. Ntawm qhov tod tes clipping yog cov txheej txheem uas cov polygons ntev dhau los ntawm lub koob yees duab raug tshem tawm lossis khaws, ua rau cov polygons tseem pom ploj mus. Qhov chaw uas cov khoom yuav tsum tau clipped yog hu ua clipping window. Clipping tau suav tias yog qhov tseem ceeb hauv kev txhim kho video games niaj hnub no. Siv cov txheej txheem no, cov neeg tsim kev ua si tuaj yeem txhim kho tus ncej tus nqi thiab kuj tseem muaj cov yeeb yaj kiab zoo ntawm qhov kev ua si. Clipping yog txheej txheem optimization uas ua rau kom muaj kev nthuav qhia ntawm tus ncej tam sim no.
Culling ntawm qhov tod tes yog ib txoj hauv kev siv rau kev tshem tawm qhov chaw zais hauv cov duab nraaj. Culling yog ob hom, qhov sib piv loj ntawm cov ntsiab lus hais txog kev ua haujlwm ntawm lub cim xeeb hu ua MCCAM Cull, thiab kev ua haujlwm subpixel cull. Lwm cov ntsiab lus cuam tshuam nrog culling yog rov qab lub ntsej muag culling, uas txiav txim siab yog hais tias ib tug polygon ntawm ib tug graphical khoom yog pom, thiab occlusion culling, uas sim mus obviate kos duab ntawm polygons uas yog them los ntawm saib los ntawm lwm yam polygons uas pom.
