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PBR Materials

  • Color Map bandicam 2024-06-24 14-24-33-958

  • Metallic/Metalness Map bandicam 2024-06-24 14-24-59-161

  • Roughness Map bandicam 2024-06-24 14-25-11-055

  • Normal Map bandicam 2024-06-24 14-25-19-939

  • Height Map bandicam 2024-06-24 14-25-27-219

  • Alpha Map bandicam 2024-06-24 14-25-41-547 bandicam 2024-06-24 14-25-48-217

  • Emission Map bandicam 2024-06-24 14-25-50-721

Texturing

  • RGB value์ธ ๊ฒฝ์šฐ image

  • Gray Scale value์ธ ๊ฒฝ์šฐ image

Procedural Texturing

  • Procedural Texturing์€ ์ˆ˜ํ•™์ ์œผ๋กœ ํ…์Šค์ฒ˜๋งต์„ ๋ชจ๋ธ๋งํ•˜๋Š” ๊ฒƒ์ž…๋‹ˆ๋‹ค.
  • ์ƒ์„ฑ๋œ ํ…์Šค์ฒ˜๋งต์€ 3D ๋ชจ๋ธ๋ง์— Texture mapd์œผ๋กœ ์‚ฌ์šฉ๋ฉ๋‹ˆ๋‹ค.
  • Procedural Texture๋Š” Blender์—์„œ๋„ ์ง์ ‘ ๋งŒ๋“ค ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. image
  • ์ˆ˜ํ•™์‹์œผ๋กœ ๋ชจ๋ธ๋ง๋œ Procedural texture ์˜ˆ์‹œ image

3D ๋ชจ๋ธ๋ง๊ณผ ํ…์Šค์ฒ˜๋ง์—์„œ ์‚ฌ์šฉ๋˜๋Š” ๋‹ค์–‘ํ•œ ๋งต๋“ค

UV Map

UV Map: 3D ๋ชจ๋ธ์˜ ํ‘œ๋ฉด์„ 2D ํ‰๋ฉด์œผ๋กœ ํŽผ์นœ ๊ฒƒ์ž…๋‹ˆ๋‹ค. ๋ชจ๋ธ์˜ 3D ์ขŒํ‘œ(X, Y, Z)๋ฅผ 2D ํ…์Šค์ฒ˜ ์ขŒํ‘œ(U, V)๋กœ ๋ณ€ํ™˜ํ•˜์—ฌ ํ…์Šค์ฒ˜ ์ด๋ฏธ์ง€๋ฅผ ๋ชจ๋ธ์˜ ๊ฐ ๋ถ€๋ถ„์— ์ •ํ™•ํ•˜๊ฒŒ ๋งž์ถœ ์ˆ˜ ์žˆ๋„๋ก ํ•ฉ๋‹ˆ๋‹ค.

Texture Maps

Texture Maps: 3D ๋ชจ๋ธ์˜ ํ‘œ๋ฉด์— ์ ์šฉ๋˜๋Š” ์ด๋ฏธ์ง€ ํŒŒ์ผ๋กœ, ๋ชจ๋ธ์˜ ์™ธํ˜•์„ ๋”์šฑ ํ˜„์‹ค์ ์œผ๋กœ ๋ณด์ด๊ฒŒ ํ•ฉ๋‹ˆ๋‹ค. ์ฃผ์š” ํ…์Šค์ฒ˜ ๋งต์˜ ์ข…๋ฅ˜๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™์Šต๋‹ˆ๋‹ค:

  • Diffuse(Color) Map: ๋ชจ๋ธ์˜ ๊ธฐ๋ณธ ์ƒ‰์ƒ ์ •๋ณด๋ฅผ ํฌํ•จํ•œ ์ด๋ฏธ์ง€. ์กฐ๋ช… ํšจ๊ณผ๋ฅผ ๋ฐฐ์ œํ•œ ์ˆœ์ˆ˜ํ•œ ์ƒ‰์ƒ์„ ์ œ๊ณตํ•ฉ๋‹ˆ๋‹ค.
    • Diffuse Color determines the overall Hue of the material without any shading or highlight.
    • Diffuse color is typically specified using RGB values between 0 and 1. image
  • Normal Map: ํ‘œ๋ฉด์˜ ์š”์ฒ ์ด๋‚˜ ์„ธ๋ถ€ ์งˆ๊ฐ์„ ํ‘œํ˜„ํ•˜๋Š” ์ด๋ฏธ์ง€. ํ”ฝ์…€ ๋‹จ์œ„๋กœ ํ‘œ๋ฉด์˜ ๋ฐฉํ–ฅ ์ •๋ณด๋ฅผ ์ œ๊ณตํ•˜์—ฌ ์ž…์ฒด๊ฐ์„ ์ถ”๊ฐ€ํ•ฉ๋‹ˆ๋‹ค.
  • Specular Map: ํ‘œ๋ฉด์˜ ๋ฐ˜์‚ฌ ํŠน์„ฑ์„ ์ •์˜ํ•˜๋Š” ์ด๋ฏธ์ง€. ๋ชจ๋ธ์˜ ํŠน์ • ๋ถ€๋ถ„์ด ์–ผ๋งˆ๋‚˜ ๋น›์„ ๋ฐ˜์‚ฌํ• ์ง€๋ฅผ ๊ฒฐ์ •ํ•ฉ๋‹ˆ๋‹ค.
  • Displacement Map: ๋ชจ๋ธ์˜ ํ‘œ๋ฉด์„ ์‹ค์ œ๋กœ ๋ณ€ํ˜•์‹œํ‚ค๋Š” ์ด๋ฏธ์ง€. ํ…์Šค์ฒ˜ ์ •๋ณด๋ฅผ ๊ธฐ๋ฐ˜์œผ๋กœ ๋ชจ๋ธ์˜ geometry๋ฅผ ๋ณ€ํ˜•ํ•˜์—ฌ ๋” ๋†’์€ ์„ธ๋ถ€ ์‚ฌํ•ญ์„ ์ œ๊ณตํ•ฉ๋‹ˆ๋‹ค.
  • Ambient Occlusion (AO) Map: ๋ชจ๋ธ์˜ ํŠน์ • ๋ถ€๋ถ„์— ๊ทธ๋ฆผ์ž ํšจ๊ณผ๋ฅผ ์ถ”๊ฐ€ํ•˜๋Š” ์ด๋ฏธ์ง€. ์ง์ ‘ ์กฐ๋ช…์— ์˜ํ•œ ๊ทธ๋ฆผ์ž ์™ธ์—๋„ ์ฃผ๋ณ€ ํ™˜๊ฒฝ์— ์˜ํ•ด ๋ฐœ์ƒํ•˜๋Š” ๊ทธ๋ฆผ์ž๋ฅผ ์‹œ๋ฎฌ๋ ˆ์ด์…˜ํ•ฉ๋‹ˆ๋‹ค.
  • Metalness Map: ๋ชจ๋ธ์˜ ๊ธˆ์†์„ฑ์„ ์ •์˜ํ•˜๋Š” ์ด๋ฏธ์ง€. ๊ธˆ์† ๋ถ€๋ถ„๊ณผ ๋น„๊ธˆ์† ๋ถ€๋ถ„์„ ๊ตฌ๋ถ„ํ•˜์—ฌ ๊ธˆ์†์˜ ๋ฐ˜์‚ฌ ํŠน์„ฑ์„ ์‹œ๋ฎฌ๋ ˆ์ด์…˜ํ•ฉ๋‹ˆ๋‹ค.
  • Roughness Map: ํ‘œ๋ฉด์˜ ๊ฑฐ์น ๊ธฐ ์ •๋„๋ฅผ ์ •์˜ํ•˜๋Š” ์ด๋ฏธ์ง€. ํ‘œ๋ฉด์ด ์–ผ๋งˆ๋‚˜ ๋งค๋„๋Ÿฝ๊ณ  ๋ฐ˜์‚ฌ์ ์ธ์ง€ ๋˜๋Š” ๊ฑฐ์น ๊ณ  ํ™•์‚ฐ์ ์ธ์ง€๋ฅผ ๊ฒฐ์ •ํ•ฉ๋‹ˆ๋‹ค.

    ์˜ˆ์‹œ

    3D ๋ชจ๋ธ์ด ์ž๋™์ฐจ๋ผ๋ฉด:

    • Diffuse(Color) Map: ์ž๋™์ฐจ์˜ ๊ธฐ๋ณธ ์ƒ‰์ƒ๊ณผ ํŒจํ„ด์„ ํฌํ•จํ•ฉ๋‹ˆ๋‹ค.
    • Normal Map: ์ž๋™์ฐจ ํ‘œ๋ฉด์˜ ์„ธ๋ถ€ ์งˆ๊ฐ๊ณผ ์š”์ฒ ์„ ํ‘œํ˜„ํ•ฉ๋‹ˆ๋‹ค.
    • Specular Map: ์ž๋™์ฐจ์˜ ๊ด‘ํƒ๊ณผ ๋ฐ˜์‚ฌ ํŠน์„ฑ์„ ์ •์˜ํ•ฉ๋‹ˆ๋‹ค.
    • Displacement Map: ํƒ€์ด์–ด์˜ ํŠธ๋ ˆ๋“œ ํŒจํ„ด์ด๋‚˜ ์ฐจ์ฒด์˜ ๊ตด๊ณก์„ ์‹ค์ œ๋กœ ๋ณ€ํ˜•ํ•ฉ๋‹ˆ๋‹ค.
    • AO Map: ์ž๋™์ฐจ์˜ ์Œ์˜๊ณผ ๊ทธ๋ฆผ์ž๋ฅผ ๋” ๊นŠ๊ณ  ํ˜„์‹ค๊ฐ ์žˆ๊ฒŒ ๋งŒ๋“ญ๋‹ˆ๋‹ค.
    • Metalness Map: ์ž๋™์ฐจ์˜ ๊ธˆ์† ๋ถ€๋ถ„๊ณผ ๋น„๊ธˆ์† ๋ถ€๋ถ„์„ ๊ตฌ๋ถ„ํ•ฉ๋‹ˆ๋‹ค.
    • Roughness Map: ์ž๋™์ฐจ ํ‘œ๋ฉด์˜ ๊ฑฐ์น ๊ธฐ ์ •๋„๋ฅผ ์ •์˜ํ•ฉ๋‹ˆ๋‹ค.

Reference

  • PBR Materials Explained
  • [This is how texturing really works Procedural Texturing](https://youtu.be/HlrT9oa7fwA?si=fAEaAuKJlSjM7GC3)

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