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Rift into UNREAL ENGINE 4 1

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Oculus into UE4

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Rift into UNREAL ENGINE 4

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What Weโ€™ve learned

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HMD(Head Mounted Display) + VR ?

Oculus + GAME ENGINE

Setting

๊ฒŒ์ž„๊ฐœ๋ฐœ๊ณผ ๋‹ค๋ฅด๊ฒŒ ์•Œ์•„์•ผ ํ•  ์ 

Introduce

-

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HMD(Head Mounted Display) + VR ?

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HMD(Head Mounted Display) + VR ?

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1. HMD Overview

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HMD(Head Mounted Display) + VR ?

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1. HMD Overview

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HMD(Head Mounted Display) + VR ?

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1. HMD Overview

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HMD(Head Mounted Display) + VR ?

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1. HMD Overview

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HDM

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2. Oculus Story

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HMD(Head Mounted Display) + VR ?

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2. Oculus Story

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3. Oculus Rift

- Fov : 110ยบ- Resolution : 1280x800 (640x800 per eye)- Head tracking / stereoscopic 3D view - ๊ธฐ์ˆ ๋ ฅ ๋ถ€์กฑ์œผ๋กœ ๋ง์ ์ด ๋ณด์ด์ง€๋งŒ, ์ฒ˜์Œ ์ ‘ํ–ˆ์„ ๋• ์ถฉ๊ฒฉ !

HMD(Head Mounted Display) + VR ?

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3. Oculus Rift

- Fov : 100ยบ- Resolution : 960x1080- OLED Display / Head Positional Tracking / Built-In Latency Tester / Oculus SDK / Refresh Rate 75Hz- ํ•˜๋“œ์›จ์–ด ์ง€์—ฐ์œจ์„ ํš๊ธฐ์ ์œผ๋กœ ๋‚ฎ์ท„์Œ- ํ™”์งˆ์€ LCD๋ณด๋‹ค ๋ถ€์กฑ- CV์ด์ „ ๋ฒ„์ „

HMD(Head Mounted Display) + VR ?

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4. Experience

http://youtu.be/Odax7F3tWhM?t=1m9s

์ž ์‹œ ์ผ์–ด๋‚˜์„œ ๋ชจ๋‘ ๋ฆฌํ”„ํŠธ์˜ ์„ธ๊ณ„๋กœ !

๋ชจ๋‹ˆํ„ฐ๊ฐ€ ์•„๋‹Œ ๋ฌผ๋ฆฌ์ ์œผ๋กœ ํ˜„์‹ค์— ์กด์žฌํ•˜๋Š”๋“ฏํ•œ ๊ฐ€์ƒ์„ธ๊ณ„๋ฅผ ๋งŒ๋‚˜๋ณด์„ธ์š”

์ฃผ์œ„๋ฅผ ์‚ดํ•„์ˆ˜๋„ ์žˆ๊ณ , ์ž์‹ ์˜ ๋’ค๋ฅผ ๋ณผ ์ˆ˜๋„ ๊ฐ€๊นŒ์šด ๋ฌผ์ฒด๋ฅผ ๊ด€์ฐฐํ•˜๋Š” ๊ฒƒ๋„ ๊ฐ€๋Šฅํ•ฉ๋‹ˆ๋‹ค.

๋ฌผ๋ก  DK1๊ณผ DK2์˜ ์ฐจ์ด๋กœ ๊ธฐ์ˆ ์˜ ๋ฐœ์ „๋„ ํ•จ๊ป˜ ๋Š๊ปด๋ณด์„ธ์š”

HMD(Head Mounted Display) + VR ?

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Oculus + GAME ENGINE

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1. GAME ENGINE

๊ฒŒ์ž„์˜ ๋ฏธ๋ž˜ ? ์˜คํ˜๋Ÿฌ์Šค์˜ ์„ ํƒ ?

๊ฒŒ์ž„์˜ ๋ฏธ๋ž˜๊ฐ€ ์•„๋‹Œ ๋””๋ฐ”์ด์Šค๋กœ ์ฃผ๋ชฉ

VR์€ ์‹ค์‹œ๊ฐ„ ๋ Œ๋”๋ง๊ณผ ๋†’์€ ํ”„๋ ˆ์ž„ ๋ ˆ์ดํŠธ ์œ ์ง€๊ฐ€ ํ•„์š”ํ•œ 3D๊ณต๊ฐ„ ์•ˆ์—์„œ ๋งŒ๋“ค์–ด์ง

50FPS / 60FPS / 70FPS๋ฅผ ๋ชจ๋‹ˆํ„ฐ์—์„  ์ฐจ์ด๋ฅผ ์ž˜ ๋ชจ๋ฅผ ์ˆ˜ ์žˆ์ง€๋งŒ

HMD์—์„œ๋Š” ํ™•์‹คํžˆ ๋Š๋ผ๋ฉฐ ์ด๋Š” ํฐ ๋ถˆํŽธํ•จ์œผ๋กœ ์ž‘์šฉ

-๊ฒŒ์ž„๊ฐœ๋ฐœ์ด ์ œ์ผ ์ž˜ ํ•˜๋Š” ๊ฒƒ : ๋†’์€ ํ”„๋ ˆ์ž„์œ ์ง€ / ํ•˜์ดํ€„๋ฆฌํ‹ฐ 3D

Oculus + GAME ENGINE

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Oculus + GAME ENGINE

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2. UNITY

๋‹ค์–‘ํ•œ ํ”Œ๋žซํผ์ง€์› ์‰ฌ์šด ๊ฐœ๋ฐœ์–ธ์–ด ์ €๋ ดํ•œ ๋ผ์ด์„ ์Šค๋กœ ๊ฐ๊ด‘

๋งˆ์ผ“ ๋“ฑ์˜ ํ’๋ถ€ํ•œ ๋ฆฌ์†Œ์Šค์™€ ๋ชจ๋ธ๋ง ํ”„๋กœ๊ทธ๋žจ๊ณผ์˜ ์—ฐ๋™๋„ ์ข‹์€ํŽธ

Unity4 ์ดํ›„ ์ถœ์‹œ์˜ˆ์ •์ธ ์—”์ง„

Unity5 ์—์„œ TRIPLE AAA Quality Graphic !

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Oculus + GAME ENGINE

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3. UNREAL ENGINE

์ƒˆ๋กœ์šด ๊ฐ€๊ฒฉ ์ •์ฑ… (์›”19$ / ๋งค์ถœ์•ก์˜ 5%)

์‰ฌ์šด ์ œ์ž‘ ๋ฐฉ์‹ (์ฝ”๋”ฉ์ด ์—†๋Š” Blueprint ์ œ์ž‘ ๋ฐฉ์‹๊ณต๊ฐœ)

Engine Full ์†Œ์Šค ๊ณต๊ฐœ

TRIPLE AAA Quality Graphic !

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Oculus + GAME ENGINE

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4. Why UE4

TRIPLE AAA Graphic !

VR์ปจํ…์ธ ์— ๋งž๋Š” ํ˜„์‹ค๊ฐ์€ ๋ฆฌ์–ผํ•œ ๊ทธ๋ž˜ํ”ฝ !

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Oculus + GAME ENGINE

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4. Why UE4

Blueprint ์ œ์ž‘ ๋ฐฉ์‹์ด ์ƒˆ๋กญ๊ฒŒ ๋‚˜์™€ ์ฝ”๋”ฉ์„ ํ•˜์ง€ ์•Š์•„๋„ ๊ฐ„๋‹จํ•œ ์ปจํ…์ธ  ์ œ์ž‘์ด ์‰ฝ๋‹ค

(๋ฌผ๋ก  ์‰ฝ์ง€๋Š” ์•Š์Œ)

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Oculus + GAME ENGINE

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4. Why UE4

UE4๋Š” Engine ์•ˆ์— SDK๋ฅผ ๋‚ด์žฅ ํ•˜์˜€๊ธฐ ๋•Œ๋ฌธ์— ์ถ”๊ฐ€์ ์ธ SDK ์…‹ํŒ…์„ ๋ถˆํ•„์š”

UNITY ๋„ ์ž„๋ฒ ๋””๋“œ ์ง€์›

Unity๋กœ SDK์ ์šฉ๋„ ๋น„๊ต๋กœ ๋ณด์—ฌ์ฃผ๋ ค๊ณ  ํ–ˆ์œผ๋‚˜ ๋ฌด์‚ฐ๋˜์–ด ๋ฒ„๋ฆผ ;;;;

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Oculus + GAME ENGINE

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4. Why UE4

์—”์ง„ ํ’€ ์†Œ์Šค- ๋ผ์ด์„ ์Šค ๋ณด์œ ์ž์—๊ฒŒ ๊ณต๊ฐœ / ์‹ฌ์ง€์–ด ๊ฒฐ์ œํ•ด์ œ ํ•ด๋„ ๊ฐœ๋ฐœ์€ ๊ฐ€๋Šฅ

์ €๋ ดํ•œ ๊ฐ€๊ฒฉ์ •์ฑ… (์›”19$) / ์ˆ˜์ต ๋ฐœ์ƒ์‹œ 5%

๋‹จ์  : ๋ฌด๊ฑฐ์›€โ€ฆ ์“ธ๋ฐ์—†์ด ๋ฌด๊ฑฐ์šธ ๋•Œ๊ฐ€ ๋งŽ๊ณ  ๋ชจ๋ฐ”์ผ์€ ์ง€์›ํ•˜์ง€๋งŒ โ€ฆ ์ •๋ง ? ์ด๋ž€ ๋ง์ด ์ ˆ๋กœ ๋‚˜์˜ด ๋ฌด๊ฒ;

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Oculus + GAME ENGINE

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5. Others

Ndivia๋Š” 2014๋…„ 970, 980์‹œ๋ฆฌ์ฆˆ๋ฅผ ๋ฐœํ‘œํ•˜๋ฉด์„œ ๊ฐ๊ฐ์˜ GPU์— ๊ฐ๊ฐ์˜ ์‹œ์•ผ๋ฅผ ๋ Œ๋”๋ง์„ ์ง€์›ํ•  ์˜ˆ์ •

์†Œ๋‹ˆ ๋ชจํ”ผ์–ด์Šค๋“ฑ์„ ์˜คํ˜๋Ÿฌ์Šค๋Š” ๊ฒฝ์Ÿ์ž๋กœ ๋ณด์ง€ ์•Š์Œ, ๋™๋ฐ˜์ž์™€ ์‚ฐ์—…ํ™•์žฅ์˜ ๊ธฐํšŒ๋กœ ์ƒ๊ฐ

DK1์€ ์„ค๊ณ„๋„๋ฅผ Oculus์—์„œ ์˜คํ”ˆ !

๊ฐค๋Ÿญ์‹œ ๋…ธํŠธ4๋Š” ์˜คํ˜๋Ÿฌ์Šค์—์„œ ์ฃผ๋„์ ์œผ๋กœ ๊ฐœ๋ฐœ (์‚ผ์„ฑ์€ ๋””์ž์ธ๋งŒ) โ€“ 2๋…„ ์ง„ํ–‰ ํ•œ ํ”„๋กœ์ ํŠธ

์˜คํ˜๋Ÿฌ์Šค๋Š” ์ƒ์šฉ๋ฒ„์ „์˜ ๋ฐœํ‘œ๋ฅผ ํŽ˜์ด์Šค๋ถ ์ธ์ˆ˜๋กœ ์ธํ•ด ์ž๊ธˆ์˜ ์—ฌ์œ ๊ฐ€ ์ƒ๊ฒผ์œผ๋‹ˆ ๋” ๋ฐœ์ „ํ•œ ํ›„ ๋ฐœํ‘œ ์˜ˆ์ •

์˜คํ˜๋Ÿฌ์Šค๋Š” ์‚ฌ๋žŒ์˜ ๋ˆˆ๊ณผ ์†, ์ž…์„ ๋”ฐ๋ผ ์ถ”์ ํ•˜๋Š” ์ƒˆ๋กœ์šด ๊ธฐ์ˆ  ์—ฐ๊ตฌ์ค‘

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Setting

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Engine Integration Overview

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1. Start

Oculus DK2๋ฅผ ์—ฐ๊ฒฐํ•˜๊ธฐ ์œ„ํ•ด ํ•„์š”ํ•œ ๋‘๊ฐ€์ง€

- Oculus SDK (์ตœ์‹ ๋ฒ„์ „ 0.4.2Beta)

- Oculus Runtime for Windows

DK2์—์„œ ์ œ๊ณตํ•˜๋Š”

Positional tracking ์„ผ์„œ / ์นด๋ฉ”๋ผ ๋“œ๋ผ์ด๋ฒ„ ์„ค์น˜

- UNREAL ENGINE

ํ•ด๋‹น ํŒŒ์ผ์€ Oculus/UE ์‚ฌ์ดํŠธ์—์„œ ๋‹ค์šด๋กœ๋“œ

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Engine Integration Overview

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2. Start

Oculus๊ฐ€ PC์™€ ์—ฐ๊ฒฐ์ด ์ •์ƒ์ ์œผ๋กœ

์—ฐ๊ฒฐ๋˜์—ˆ๋‹ค๋ฉด ์…‹ํŒ… ํ”„๋กœ๊ทธ๋žจ์—

Oculus Model์ด ํ™•์ธ

- User์—๋Š” ์„ฑ๋ณ„/ํ‚ค/ํƒ€์ž…์„ ์ ์œผ๋ฉด ์„ธํŒ… ์™„๋ฃŒ

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Engine Integration Overview

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3. Start

UE4 ์„ค์น˜ ํ›„ ๋Ÿฐ์ฒ˜๋ฅผ ์‹คํ–‰

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Engine Integration Overview

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4. Start

๋ธ”๋ฃจํ”„๋ฆฐํŠธ ์ผ์ธ์นญ์œผ๋กœ ์ƒˆ ํ”„๋กœ์ ํŠธ ์ƒ์„ฑ

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Engine Integration Overview

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5. Start

๋ธ”๋ฃจํ”„๋ฆฐํŠธ 1์ธ์นญ ์ƒ์„ฑ ํ›„

๋ทฐํฌํŠธ ์ƒ๋‹จ์˜ ํ”Œ๋ ˆ์ด๋ฒ„ํŠผ์„

[๋…๋ฆฝํ˜• ๊ฒŒ์ž„์œผ๋กœ ํ”Œ๋ ˆ์ด]์‹คํ–‰ ํ›„

์ „์ฒดํ™”๋ฉด์œผ๋กœ ๋ณ€๊ฒฝํ•˜๋ฉด

์˜คํ˜๋Ÿฌ์Šค ๋ฆฌํ”„ํŠธ์˜ ๋™์ž‘์ด ํ™•์ธ ๊ฐ€๋Šฅํ•ฉ๋‹ˆ๋‹ค.

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๊ฒŒ์ž„๊ฐœ๋ฐœ๊ณผ๋‹ค๋ฅด๊ฒŒ ์•Œ์•„์•ผ ํ•  ์  !

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๊ฒŒ์ž„๊ฐœ๋ฐœ๊ณผ๋Š” ๋‹ค๋ฅด๊ฒŒ ์•Œ์•„์•ผ ํ•  ์ 

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๊ฒŒ์ž„๊ฐœ๋ฐœ๊ณผ๋Š” ๋‹ค๋ฅด๊ฒŒ ์•Œ์•„์•ผ ํ•  ์ 

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๊ฒŒ์ž„๊ฐœ๋ฐœ๊ณผ๋Š” ๋‹ค๋ฅด๊ฒŒ ์•Œ์•„์•ผ ํ•  ์ 

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๊ฒŒ์ž„๊ฐœ๋ฐœ๊ณผ๋Š” ๋‹ค๋ฅด๊ฒŒ ์•Œ์•„์•ผ ํ•  ์ 

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๊ฒŒ์ž„๊ฐœ๋ฐœ๊ณผ๋Š” ๋‹ค๋ฅด๊ฒŒ ์•Œ์•„์•ผ ํ•  ์ 

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์ด ๋ง์€ ?

๋‘ ๋ฒˆ ๋ Œ๋”๋งํ•ด์„œ ์–‘์ชฝ์— ๋ณด์—ฌ์ค€๋‹ค๋Š” ๋ง ! ๊ณ ๋กœ ๋‘ ๋ฐฐ๋กœ ๋ฌด๊ฒ โ€ฆ

๋ฌผ๋ก  ์—”์ง„์—์„œ ์•Œ์•„์„œ ๋ Œ๋”๋ง ํ•ด์ค๋‹ˆ๋‹ค. ์‰์ด๋” ํŒŒ๋ฆฌ๋ฏธํ„ฐ๋ฅผ ์ž๋™์œผ๋กœ ๋‚˜๋ˆ ์„œ ์–‘์ชฝ ๋ˆˆ์˜ ์‹œ์•ผ์— ๋งž์ถฐ ๋‚˜๋ˆ ์ค๋‹ˆ๋‹ค.

ํ•˜์ง€๋งŒ ์ด๋Š” GPU / CPU / ๋žจ ๋ชจ๋‘ ๋น ๋ฅธ๊ฑธ ํ•„์š”๋กœ ํ•ฉ๋‹ˆ๋‹ค.

์•Œ์•„์•ผ ํ•˜๋Š” ์‚ฌ์‹ค ํ•œ๊ฐ€์ง€ ๋” !

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๊ฒŒ์ž„๊ฐœ๋ฐœ๊ณผ๋Š” ๋‹ค๋ฅด๊ฒŒ ์•Œ์•„์•ผ ํ•  ์ 

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์˜ค๋ชฉ์™œ๊ณก (์—”์ง„) ๋ณผ๋ก์™œ๊ณก (์˜คํ˜๋Ÿฌ์Šค ๋ Œ์ฆˆ)

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๊ฒŒ์ž„๊ฐœ๋ฐœ๊ณผ๋Š” ๋‹ค๋ฅด๊ฒŒ ์•Œ์•„์•ผ ํ•  ์ 

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์˜ค๋ชฉ์™œ๊ณก (์—”์ง„) ๋ณผ๋ก์™œ๊ณก (์˜คํ˜๋Ÿฌ์Šค ๋ Œ์ฆˆ)

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๊ฒŒ์ž„๊ฐœ๋ฐœ๊ณผ๋Š” ๋‹ค๋ฅด๊ฒŒ ์•Œ์•„์•ผ ํ•  ์ 

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์‹ค์ œ ๋ Œ๋”๋ง ์˜์—ญ HMD์— ๋“ค์–ด๊ฐ€๋ฉด

ํ•ด์ƒ๋„๋„ ๋–จ์–ด์ง

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๊ฒŒ์ž„๊ฐœ๋ฐœ๊ณผ๋Š” ๋‹ค๋ฅด๊ฒŒ ์•Œ์•„์•ผ ํ•  ์ 

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์‚ฌ์‹ค ์œ„์˜ ๋‚ด์šฉ์€ ์—”์ง„๊ณผ SDK๊ฐ€ ์•Œ์•„์„œ โ€ฆ

์—ฌ๊ธฐ์„œ ์ž ๊น Oculus Rift ๊ฐœ๋ฐœ ์‹œ ์ €ํฌ ํŒ€์˜ ๊ฐ€์žฅ ์ฃผ์š” ์ฒดํฌ ํฌ์ธํŠธ ์„ธ๊ฐ€์ง€๋ฅผ ์•Œ๋ ค๋“œ๋ฆฌ๊ฒ ์Šต๋‹ˆ๋‹ค.

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60Frame ์—์„œ ๋‚ฎ์•„์ง€๋ฉด ์ง€์—ฐ์œจ (Latency) ์œ ๋ฐœ

Latency๊ฐ€ ๋‚ฎ๋‹ค๋Š”๋ง์€ Oculus Rift ๊ฐœ๋ฐœ์ž๋“ค์ด ๊ฐ€์žฅ ๋ฌด์„œ์›Œํ•˜๋Š” ๋ง

ํ”„๋ ˆ์ž„์ด ๋–จ์–ด์ง€๋ฉด ์ผ๋ฐ˜ ๊ฒŒ์ž„์€ ์•„ ํ”„๋ ˆ์ž„ ๋”ธ๋ ค ์งœ์ฆ๋‚˜ ์ •๋„์ง€๋งŒ

๋ฆฌํ”„ํŠธ ์œ ์ €๋“ค์€ ๋ฉ€๋ฏธ์™€ ํ•จ๊ป˜ ๋ฆฌํ”„ํŠธ๋ฅผ ๋˜์ ธ๋ฒ„๋ฆฌ๊ณ  ์‹ถ์–ด์ง

1. Frame๋งˆ์ง€๋…ธ์„  60fps

์•„๋ฌด๋ฆฌ ๊ฐ•์กฐํ•ด๋„ 60fps๋„ ๋ถ€์กฑ (in Rift)

์ผ๋ฐ˜ ๋ชจ๋‹ˆํ„ฐ์—์„  140fps์ด์ƒ ์ฐ์–ด์ค˜์•ผ ํ•จ

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2. ์—ฐ์ถœํ™”๋ฉด ๊ตฌ์„ฑ

๊ทธ๋ƒฅ ๋ชจ๋‹ˆํ„ฐ์—์„œ๋Š” ์ด์œ ํ™”๋ฉด/๋ฉ‹์ง„ ๊ตฌ์„ฑ์ผ์ง€๋ผ๋„

๋ฆฌํ”„ํŠธ์—์„œ ๊ตฌํ†  ์œ ๋ฐœ ๊ฐ€๋Šฅ

์‹œ์—ฐ ์ค‘ Living Room ๋ถ€๋ถ„ ์ดˆ๋ฐ˜์— ๋ฉ€๋ฏธ๋ฅผ ์ผ๋ถ€๋Ÿฌ ์œ ๋ฐœ

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3. VQ๋น„์ฃผ์–ผ ํ€„๋ฆฌํ‹ฐ,

์ฒด๊ฐํ˜•์€ ๋น„์ฃผ์–ผ ํ€„๋ฆฌํ‹ฐ๊ฐ€ ๋†’์„ ์ˆ˜ ๋ก

์ฒด๊ฐํšจ๊ณผ๊ฐ€ ์ข‹๊ณ , HMD์ง€์†์‹œ๊ฐ„์ด ๊น€

๊ทธ๋ž˜๋„

๊ฐ€์žฅ ์ค‘์š”ํ•œ ๊ฑด ํ”„๋ ˆ์ž„ !!!!!!!

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4. ETC

- HMD๋ฅผ ์ƒ๊ฐํ•ด์„œ ๋””์ž์ธ (์˜ˆ. 1์ธ์นญ ์‹œ์ ์ด์ง€๋งŒ ์•„๋ž˜๋ฅผ ๋ณด๋ฉด ๋ฐœ๊ณผ ๋‹ค๋ฆฌ ์†์ด ๋ณด์—ฌ์•ผ ํ•จ)

- ์ด๋™๊ณผ ๋ฒ„ํŠผ์•ก์…˜์€ Game Controller ๊ฐ™์€ ๋””๋ฐ”์ด์Šค ํ•„์š”

- ๋งŽ์€ ์„œ๋“œ ํŒŒํ‹ฐ ๊ฐœ๋ฐœ์‚ฌ/๋””๋ฐ”์ด์Šค ๊ฐœ๋ฐœ์‚ฌ๋“ค์ด ์ฐธ์—ฌ ์ค‘

- ์˜์™ธ๋กœ 3์ธ์นญ๋„ ์ž˜ ์–ด์šธ๋ฆผ

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TIP.(ํ•˜์ง€๋งŒ ๊ฐ€์žฅ ํšจ๊ณผ์ )

ํ™˜๊ฒฝ์„ค์ •

> Edit -> Editor preferences -> Miscellaneous -> Performance -> Use Less CPU when in Background

์ฝ˜์†” ๋ช…๋ น์–ด ์ž…๋ ฅ ํ•˜์—ฌ ํ”„๋ ˆ์ž„ ๋‹ค์šด

stereo on / t.maxfps 100 / Hmd mirror off (๋ฏธ๋Ÿฌ๋ชจ๋“œ off ํ•˜์—ฌ ์˜คํ˜๋Ÿฌ์Šค๋กœ ๋ฐ”๋กœ ์ถœ๋ ฅ) / Hmd sp 100 / hmd vsync off

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TIP.(ํ•˜์ง€๋งŒ ๊ฐ€์žฅ ํšจ๊ณผ์ )

- ์ถ”๊ฐ€์ ์ธ ์Šคํƒœํ‹ฑ ๋งค์‰ฌ์™€ ํŒŒํ‹ฐํด ๋“ฑ ์…‹ํŒ… ํ•˜์—ฌ ํ”„๋ ˆ์ž„ ์ƒ์Šน

- Make sure to turn off dynamic shadows for most things(๋™์ ์ธ ๊ทธ๋ฆผ์ž ์ œ๊ฑฐ)

- Turn off gravity for static actors.(์Šคํƒœํ‹ฑ ์•กํ„ฐ์˜ ์ค‘๋ ฅ off)

- Make any non-moving level geometry *static* (not movable).

- Reduce the number of lights that cast shadows. (cast shadows๋ฅผ ์ค„์—ฌ๋ผ)

- Keep GPU particles to a minimum, or use lowest LODs for GPU particles, and no scene collision.

- Use no more than one particle light node.

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THANK YOU

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