SQLite Recursive CTE Powers Novel Ray Tracer Implementation
▶ The 60-second brief
Summary
A new project demonstrates a ray tracer built entirely using SQLite's recursive Common Table Expressions, storing its state on disk. This unique approach allows other tools to query the ray tracer's state in real-time, exemplified by a custom HTML+JS minimap.
Why it matters
This demonstrates creative and unexpected uses for established database technologies, potentially inspiring novel architectural patterns for data-driven applications or simulations. It highlights how existing tools can be pushed beyond their conventional boundaries.
How to implement this in your domain
- 1Explore using recursive CTEs in SQL for complex data processing or simulations beyond typical data retrieval.
- 2Investigate SQLite's capabilities for persistent state management in lightweight, embeddable applications.
- 3Design systems where core application state is exposed via a database, enabling real-time external tool integration.
- 4Experiment with building custom visualization or monitoring tools that directly query application databases.
Who benefits
Key takeaways
- SQLite recursive CTEs can be used for complex computational tasks like ray tracing.
- Storing application state in a database enables real-time external querying and integration.
- Creative use of existing technologies can lead to novel and efficient solutions.
- This approach offers new possibilities for data-driven simulations and interactive tools.
Original post by @simonw
"This is really cool! It renders frames using a ray tracer implemented as a SQLite recursive CTE Since state is stored in a SQLite database on-disk you can have other tools query it while you are playing - I rolled this custom HTML+JS view that adds a minimap"
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Originally posted by @simonw on X · view source
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