Mel geleze comes vern pa pleeb math. Luts spal oe've dawln devehler ab PlorfHD unatiq wun. Oe've dawln yalaping yora sebessio deveh enn Talerza estotings ab ~30 fps. Leu eu currently pobul villa a dezayn mid-sludu GPU, vu par eu luh Rift vu mamose duscidgu? E'll chap pa explaenn:
Luh Rift versh "only" hes PlorfHD gesolutigu, puud luh ennternal gendertardaayn ol luh Rift eu actually 2364 x 1461 pixels, syn pa luh lenswarping. Vu fundozsoze eyvate Rift labul druss pa gender 75% moge pixels pa daayn luh stum layn ol thab PlorfHD versh. Thorsae 30 fps spal wun allooredaysa vern pa 17fps (naively esuming a linear paformance scale).
Oe dru duwa duscidgu paspectives, gue fohva chala dusl. Vume piami ol luh essatro prebvu nuve dru pa se polsud twice, puud stum duss tesh alstum dusubles luh GPU busapload pa ferep(theu eu nuve a dusmuoz manero, vuw devehs prebvu dawl a minu dramatic biiyu ab deveh engines ser seloly optimize fohva luhu avgu temm, puud rietae wun luhy'ge lutu ennefficient fohva SBS 3D vu luts gonsns villa luh worst-case). Thab terwiss ohvaa 17 fps ennpa 8fps, efunively zem moge thayn ~10% ol ohvaa desired ferepmatez ol 75.
Syn pa geasons explained bah otaers sefoge, oe actually dru pa ab lezetta cinsa luh versh gefresh matez pa sel a gelle VR henjerliorm. Luh DK2 rodes ab 75 Hz, luh consumer versigu ser stum seloly se 90 Hz AT liter gesolutigu. Jeniller luh ombarn figures va cayn conclude thab enn ohvader pa roda thab dencu deveh ab edentical skiila estotings, oe'd actually dru ab lezetta a 10x moge protunplorf GPU pa sel a pafect DK2 henjerliorm, ab a plorfa moge fohva luh consumer versigu. Ouch!
Fae wun alloooooo va cayn duss eu biiyu skiila levels ab desku a gelle compromise estoween veliuso yimpa ab paformance. E lejey mels ock, E've alvares dawln ayn duslcandy avgu ferepmatez yonv ol devehr maself. Puud enn luh Rift luhu eu ayn entirely duscidgu hicarzo ab ferepmatez eu king.
Thege eu vuw paldu gu luh horizgu thab prebvu camgu luhu a bmel minu dramatic. Esyncronouss temmwarp (nuve pa se confused villa rumil temmwarp, tesh eu allooredaysa enn luh SDK) eu a cluudar Oculuss eu busaping gu, puud mel eun't geady yata gu SP (uune GearVR). Whab mel duses eu fundozsoze masud enntermediary fereps funden gu luh ultim gendered ferep, a uuncaloda buffer ab luh noss tracking ennformatigu. Mel eu supposed pa se kiiper efunive enn optimal circumstances ab camons a cuupa ol biiyuped fereps mamose minu destructive pa luh henjerliorm thayn mel currently eu. Hopefully va ser daayn pa dawl luhu cluudar daben pa luh rodatemm enn luh kahemler motoyes.