LightLibrary
A curated, AI-tagged photo reference library of real-world lighting situations — corners, edges, indirect bounces — annotated for 3D artists, game devs, and architectural visualizers who need to see how light actually behaves, not how SSAO renders it.
intermediate and advanced 3D artists, technical artists, and archviz specialists who actively research lighting references
- Searchable reference database where users can query by intent — 'T-junction in indirect light', 'soft corner with one window' — and get annotated real-world photos
- Per-photo metadata including approximate light direction, color temperature, surface materials, and a callout box of what an SSAO-style render typically gets wrong here
- Side-by-side compare mode that pins a reference photo next to the artist's current render and AI-flags where their ambient darkening diverges from the reference
- Personal collections and 'mood boards' that users can share with a small team of collaborators
The HN discussion shows real frustration that 13 years after this critique, ambient occlusion in shipped games still doesn't match real corners — 3D artists are hungry for better reference material and have no specialized product to turn to.
Active demand exists — Poliigon and Poly Haven already serve 3D artists seeking lighting reference, and dedicated tools like lightdropper.com and Queue Develop's 'Light Reference' itch.io app target this exact pain point.Lightdropper — Interactive 3D lighting reference tool ↗Light Reference by QueueDevelop — itch.io ↗
Poly Haven, Poliigon and ambientCG ship full 360° HDRI environments (general illumination probes), not annotated real-world lighting *behavior* photos — corner bounces, occluded edges, indirect light. The niche of AI-tagged, annotated photo references appears genuinely underserved.Poly Haven HDRIs — free artificial light environments ↗Poliigon HDRIs for 3D artists ↗
Poliigon proves subscription willingness to pay for curated lighting assets in this market, but the audience is mid-size (mid/senior 3D artists and archviz specialists), not mass-market, and must compete against free alternatives like Poly Haven.Poliigon Plans and Pricing ↗
Archviz, game dev, and 3D content pipelines are durable multi-decade industries; physics of light doesn't change, and AI-tagging improves with model advances, supporting long shelf-life content.
Modern AI image-tagging (CLIP-style) makes metadata generation tractable for a small team, but the hard work is manual curation and sourcing legitimately licensed reference photos — original capture would also be costly.