Follow-up: only unrealistic pigment bands let RGB rendering turn a wall black
ssh4net · x · 2026-11-10
Follow-up to the spectral rendering comparison: only by defining unrealistically narrow and non-overlapping pigment absorption bands for both colored walls can one of them render black.
This shows real paints have overlapping spectra, which RGB 3-channel rendering cannot handle correctly in light bounces, while spectral rendering gives physically plausible results.
Related event: Spectral Rendering vs RGB: White Light on a Red Wall Exposes GI Distortion(4 posts)→
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