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Dynamic Batching for VFX
๊ทธ๋ž˜ํ”ฝ๋””์ž์ธ์‹ค VFX Team : ์ฑ„๋ฌธ๋ฐฐ
๋™์ ๋ฐฐ์นญ ๊ธฐ๋ณธ
โ€ข ํŒŒํ‹ฐํด๋กœ ์ œ์ž‘๋œ ์ดํŽ™ํŠธ๋งŒ ๋™์ ๋ฐฐ์นญ์ด ๋œ๋‹ค.
โ€ข ๋™์ผ ๋ฉ”ํ„ฐ๋ฆฌ์–ผ์„ ๊ณต์œ ํ•œ๋‹ค. ( ํ…์Šค์ฒ˜ ์•„ํ‹€๋ผ์Šค๋ฅผ ์‚ฌ์šฉ )
โ€ข ํŒŒํ‹ฐํด์€ ํ•˜๋‚˜์˜ ๋ฉ”ํ„ฐ๋ฆฌ์–ผ์— 75๊ฐœ ์ดํ•˜๊ฐ€ ๋˜๋„๋ก ์ œ์ž‘์— ์‹ ๊ฒฝ์„ ์“ด๋‹ค.
( Scene์—์„œ ์บ๋ฆญํ„ฐ, ๋ฐฐ๊ฒฝ, ๋ชฌ์Šคํ„ฐ ๋“ฑ ํ•œ ์”ฌ์— ๋™์ ๋ฐฐ์นญ ๊ฐ€๋Šฅํ•œ ํŒŒํ‹ฐํด์€ 75๊ฐœ ์ดํ•˜ )
โ€ข ๊ณ„์‚ฐ๋ฐฉ๋ฒ• = (900/์‰์ด๋”์˜ attribute์ˆ˜)/ํŒŒํ‹ฐํด์ •์ 4
โ€ข ์˜ค๋ฅธ์ชฝ ๊ทธ๋ฆผ์—์„œ ์„ค์ •๋œ attribute๋Š” 3๊ฐœ
โ€ข ๋ฐฐ์นญ๊ฐ€๋Šฅ ํŒŒํ‹ฐํด ๊ฐœ์ˆ˜ = (900/3)/4 = 75๊ฐœ
โ€ข Transform.Scale์€ Inspector์—์„œ 1๋กœ ์„ค์ •๋˜์–ด์•ผ ํ•œ๋‹ค.
โ€ข ๋ถˆํˆฌ๋ช…ํ•œ (blend mode)์‰์ด๋”์˜ RenderQue๊ฐ€ ๋จผ์ € ๋ Œ๋”๋ง์ด ๋˜๋„๋ก ์„ค์ •ํ•œ๋‹ค.
๋™์ ๋ฐฐ์นญ ์œ ์˜์‚ฌํ•ญ
โ€ข ์Šคํฌ๋ฆฝํŠธ๋ฅผ ํ†ตํ•ด ๋ณ€ํ™”๋ฅผ ์ฃผ๋ฉด ๋ฉ”ํ„ฐ๋ฆฌ์–ผ์˜ ๋ณต์‚ฌ๊ฐ€ ์ƒ๊ฒจ ๋“œ๋กœ์šฐ์ฝœ์ด ์‹คํ–‰๋˜์ง€
์•Š๋Š”๋‹ค.
Ex) [Renderer.material](ScriptRef : Renderer-material.html)
์Šคํฌ๋ฆฝํŠธ์—์„œ ๋ฉ”ํ„ฐ๋ฆฌ์–ผ์˜ ์†์„ฑ์„ ์ ‘๊ทผํ•œ๋‹ค๋ฉด [Renderer.SharedMaterial](ScriptRef :
Renderer-SharedMaterial.html)์„ ์‚ฌ์šฉํ•˜๋„๋ก ํ•œ๋‹ค.
โ€ข ์œ ๋‹ˆํ‹ฐ API์—์„œ ์ œํ•œ์„ ๋‘๋Š” ์ •์ ์˜ ๊ฐœ์ˆ˜๋Š” 900๊ฐœ (particle = 75๊ฐœ)์ด๋‹ค.
( ๋„ˆ๋ฌด ์ ์–ด์„œ ์–ด๋–ป๊ฒŒ ๋“œ๋กœ์šฐ์ฝœ์„ ์ค„์ผ์ง€ ๋‚œ๊ฐโ€ฆ.. ๋ฐฐ๊ฒฝ, ํด๋ž˜์Šค, ์ ๊ณผ ์•„๊ตฐ๋“ฑ ์‹œ์Šคํ…œ์—๋”ฐ๋ผ ์ ์ ˆํ•˜๊ฒŒ ๋ถ„๋ฐฐํ•˜์—ฌ ์ ์šฉ )
โ€ข ํŠน์ •ํšจ๊ณผ๋ฅผ ์œ„ํ•œ Shader๋ฅผ ์‚ฌ์šฉํ•œ๋‹ค๋ฉด ๋™์ ๋ฐฐ์นญ์˜ ์˜๋ฏธ๊ฐ€ ์—†์„ ์ˆ˜ ์žˆ๋‹ค. ๊ทธ
์ด์œ ๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™๋‹ค.
1. Shader์—์„œ UV์™€ ๋ฒ•์„ ์ •๋ณด(normal๊ณ„์‚ฐ)์„ ํ•œ๋‹ค๋ฉด ์ œํ•œ ์ •์ ์˜ ๊ฐœ์ˆ˜๋Š” 300๊ฐœ (particle = 75๊ฐœ )์ด๋‹ค.
2. Shader์—์„œ ์ •์ ์œ„์น˜, ๋ฒ•์„ , UV0,UV1 ํƒ„์  ํŠธ๋ฅผ ์‚ฌ์šฉํ•œ๋‹ค๋ฉด ์ œํ•œ ์ •์ ์˜ ๊ฐœ์ˆ˜๋Š” 180 (particle = 45๊ฐœ)์ด๋‹ค.
*************** ์œ ๋‹ˆํ‹ฐ์˜ ์ œํ•œ์‚ฌํ•ญ์€ ๋ฐ”๋€” ์ˆ˜ ์žˆ๋‹ค๊ณ  ๊ณ ์ง€๊ฐ€ ๋˜์–ด์žˆ์Œ (์ฃผ๊ธฐ์ ์œผ๋กœ ํ™•์ธ)
โ€ข ๋ฉ”์‰ฌ or ์ธ์Šคํ„ด์Šค๋ฉ”์‰ฌ๋กœ ์ œ์ž‘๋œ ์ดํŽ™ํŠธ๋Š” ๋™์ ๋ฐฐ์นญ์—์„œ ์ œ์™ธ๋จ
โ€ข ๊ทธ๋ฆผ์ž ํˆฌ์˜, ์นด๋ฉ”๋ผ์˜ ๊นŠ์ด ํ…์Šค์ณ, GUI ์˜ ๊ฒฝ์šฐ์—๋Š” ๋ฐฐ์นญ๋˜์ง€ ์•Š์Œ.
โ€ข ๋ฉ€ํ‹ฐํŒจ์Šค ์‰์ด๋”๋ฅผ ์‚ฌ์šฉํ•˜์ง€ ์•Š๋Š”๋‹ค. ( additional per-pixel lights๋Š” ๋ฐฐ์นญ์ด ๋˜์ง€ ์•Š์Œ )
โ€ข ์ƒ์„ฑ์ดํŽ™ํŠธ๋ฅผ ์บ๋ฆญํ„ฐ์˜ Boneํ•˜์œ„์— ๋ฐœ์ƒ์‹œํ‚ค์ง€ ์•Š๋Š”๋‹ค.
( Transform.Scale์˜ ๋ณ€ํ™”๋กœ ๋ฐฐ์นญ์ด ๋˜์ง€ ์•Š์Œ. ํ•ด๋‹น ๊ฐ์ฒด์˜ Position๊ฐ’์„ ๋ฐ›์•„ ์ถœ๋ ฅํ•˜๋„๋ก ์„ค์ • )
๋™์ ๋ฐฐ์นญ ๋ถˆ๊ฐ€์‚ฌํ•ญ

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  • 1. 1 Dynamic Batching for VFX ๊ทธ๋ž˜ํ”ฝ๋””์ž์ธ์‹ค VFX Team : ์ฑ„๋ฌธ๋ฐฐ
  • 2. ๋™์ ๋ฐฐ์นญ ๊ธฐ๋ณธ โ€ข ํŒŒํ‹ฐํด๋กœ ์ œ์ž‘๋œ ์ดํŽ™ํŠธ๋งŒ ๋™์ ๋ฐฐ์นญ์ด ๋œ๋‹ค. โ€ข ๋™์ผ ๋ฉ”ํ„ฐ๋ฆฌ์–ผ์„ ๊ณต์œ ํ•œ๋‹ค. ( ํ…์Šค์ฒ˜ ์•„ํ‹€๋ผ์Šค๋ฅผ ์‚ฌ์šฉ ) โ€ข ํŒŒํ‹ฐํด์€ ํ•˜๋‚˜์˜ ๋ฉ”ํ„ฐ๋ฆฌ์–ผ์— 75๊ฐœ ์ดํ•˜๊ฐ€ ๋˜๋„๋ก ์ œ์ž‘์— ์‹ ๊ฒฝ์„ ์“ด๋‹ค. ( Scene์—์„œ ์บ๋ฆญํ„ฐ, ๋ฐฐ๊ฒฝ, ๋ชฌ์Šคํ„ฐ ๋“ฑ ํ•œ ์”ฌ์— ๋™์ ๋ฐฐ์นญ ๊ฐ€๋Šฅํ•œ ํŒŒํ‹ฐํด์€ 75๊ฐœ ์ดํ•˜ ) โ€ข ๊ณ„์‚ฐ๋ฐฉ๋ฒ• = (900/์‰์ด๋”์˜ attribute์ˆ˜)/ํŒŒํ‹ฐํด์ •์ 4 โ€ข ์˜ค๋ฅธ์ชฝ ๊ทธ๋ฆผ์—์„œ ์„ค์ •๋œ attribute๋Š” 3๊ฐœ โ€ข ๋ฐฐ์นญ๊ฐ€๋Šฅ ํŒŒํ‹ฐํด ๊ฐœ์ˆ˜ = (900/3)/4 = 75๊ฐœ โ€ข Transform.Scale์€ Inspector์—์„œ 1๋กœ ์„ค์ •๋˜์–ด์•ผ ํ•œ๋‹ค. โ€ข ๋ถˆํˆฌ๋ช…ํ•œ (blend mode)์‰์ด๋”์˜ RenderQue๊ฐ€ ๋จผ์ € ๋ Œ๋”๋ง์ด ๋˜๋„๋ก ์„ค์ •ํ•œ๋‹ค.
  • 3. ๋™์ ๋ฐฐ์นญ ์œ ์˜์‚ฌํ•ญ โ€ข ์Šคํฌ๋ฆฝํŠธ๋ฅผ ํ†ตํ•ด ๋ณ€ํ™”๋ฅผ ์ฃผ๋ฉด ๋ฉ”ํ„ฐ๋ฆฌ์–ผ์˜ ๋ณต์‚ฌ๊ฐ€ ์ƒ๊ฒจ ๋“œ๋กœ์šฐ์ฝœ์ด ์‹คํ–‰๋˜์ง€ ์•Š๋Š”๋‹ค. Ex) [Renderer.material](ScriptRef : Renderer-material.html) ์Šคํฌ๋ฆฝํŠธ์—์„œ ๋ฉ”ํ„ฐ๋ฆฌ์–ผ์˜ ์†์„ฑ์„ ์ ‘๊ทผํ•œ๋‹ค๋ฉด [Renderer.SharedMaterial](ScriptRef : Renderer-SharedMaterial.html)์„ ์‚ฌ์šฉํ•˜๋„๋ก ํ•œ๋‹ค. โ€ข ์œ ๋‹ˆํ‹ฐ API์—์„œ ์ œํ•œ์„ ๋‘๋Š” ์ •์ ์˜ ๊ฐœ์ˆ˜๋Š” 900๊ฐœ (particle = 75๊ฐœ)์ด๋‹ค. ( ๋„ˆ๋ฌด ์ ์–ด์„œ ์–ด๋–ป๊ฒŒ ๋“œ๋กœ์šฐ์ฝœ์„ ์ค„์ผ์ง€ ๋‚œ๊ฐโ€ฆ.. ๋ฐฐ๊ฒฝ, ํด๋ž˜์Šค, ์ ๊ณผ ์•„๊ตฐ๋“ฑ ์‹œ์Šคํ…œ์—๋”ฐ๋ผ ์ ์ ˆํ•˜๊ฒŒ ๋ถ„๋ฐฐํ•˜์—ฌ ์ ์šฉ ) โ€ข ํŠน์ •ํšจ๊ณผ๋ฅผ ์œ„ํ•œ Shader๋ฅผ ์‚ฌ์šฉํ•œ๋‹ค๋ฉด ๋™์ ๋ฐฐ์นญ์˜ ์˜๋ฏธ๊ฐ€ ์—†์„ ์ˆ˜ ์žˆ๋‹ค. ๊ทธ ์ด์œ ๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™๋‹ค. 1. Shader์—์„œ UV์™€ ๋ฒ•์„ ์ •๋ณด(normal๊ณ„์‚ฐ)์„ ํ•œ๋‹ค๋ฉด ์ œํ•œ ์ •์ ์˜ ๊ฐœ์ˆ˜๋Š” 300๊ฐœ (particle = 75๊ฐœ )์ด๋‹ค. 2. Shader์—์„œ ์ •์ ์œ„์น˜, ๋ฒ•์„ , UV0,UV1 ํƒ„์  ํŠธ๋ฅผ ์‚ฌ์šฉํ•œ๋‹ค๋ฉด ์ œํ•œ ์ •์ ์˜ ๊ฐœ์ˆ˜๋Š” 180 (particle = 45๊ฐœ)์ด๋‹ค. *************** ์œ ๋‹ˆํ‹ฐ์˜ ์ œํ•œ์‚ฌํ•ญ์€ ๋ฐ”๋€” ์ˆ˜ ์žˆ๋‹ค๊ณ  ๊ณ ์ง€๊ฐ€ ๋˜์–ด์žˆ์Œ (์ฃผ๊ธฐ์ ์œผ๋กœ ํ™•์ธ)
  • 4. โ€ข ๋ฉ”์‰ฌ or ์ธ์Šคํ„ด์Šค๋ฉ”์‰ฌ๋กœ ์ œ์ž‘๋œ ์ดํŽ™ํŠธ๋Š” ๋™์ ๋ฐฐ์นญ์—์„œ ์ œ์™ธ๋จ โ€ข ๊ทธ๋ฆผ์ž ํˆฌ์˜, ์นด๋ฉ”๋ผ์˜ ๊นŠ์ด ํ…์Šค์ณ, GUI ์˜ ๊ฒฝ์šฐ์—๋Š” ๋ฐฐ์นญ๋˜์ง€ ์•Š์Œ. โ€ข ๋ฉ€ํ‹ฐํŒจ์Šค ์‰์ด๋”๋ฅผ ์‚ฌ์šฉํ•˜์ง€ ์•Š๋Š”๋‹ค. ( additional per-pixel lights๋Š” ๋ฐฐ์นญ์ด ๋˜์ง€ ์•Š์Œ ) โ€ข ์ƒ์„ฑ์ดํŽ™ํŠธ๋ฅผ ์บ๋ฆญํ„ฐ์˜ Boneํ•˜์œ„์— ๋ฐœ์ƒ์‹œํ‚ค์ง€ ์•Š๋Š”๋‹ค. ( Transform.Scale์˜ ๋ณ€ํ™”๋กœ ๋ฐฐ์นญ์ด ๋˜์ง€ ์•Š์Œ. ํ•ด๋‹น ๊ฐ์ฒด์˜ Position๊ฐ’์„ ๋ฐ›์•„ ์ถœ๋ ฅํ•˜๋„๋ก ์„ค์ • ) ๋™์ ๋ฐฐ์นญ ๋ถˆ๊ฐ€์‚ฌํ•ญ