Spectral Rendering vs RGB: White Light on a Red Wall Exposes GI Distortion
Rendering experiments show that RGB screen-space GI incorrectly bleeds red from a lit wall onto nearby surfaces, while spectral rendering handles the physics correctly. The author notes this also explains why the classic Cornell Box avoids pure red and green walls.
2026-11-10 ~ 2026-11-10 · 4 related posts
- Spectral vs RGB rendering: why screen-space GI spills red light unrealistically — ssh4net · 2026-11-10
- Follow-up: only unrealistic pigment bands let RGB rendering turn a wall black — ssh4net · 2026-11-10
- Why the classic Cornell Box avoids pure red and green walls — ssh4net · 2026-11-10
- Spectral vs RGB rendering: why only a spectral renderer lights the green wall correctly — ssh4net · 2026-11-10