Bloom

- 원본
- 축소 (w/4, h/4)
  - 밝은부분
    - 블러적용
- 원본과 블러적용 더하기

• 참조 : Filter.md
• [GPU Gems 1] Chapter 21. Real-Time Glow

Bloom Curve

• https://graphtoy.com/
• https://catlikecoding.com/unity/tutorials/custom-srp/post-processing/#2.7