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The Ray Tracer Challenge This book challenges you to build a Whitted-style ray tracer from scratch. Unlike many tutorials, it doesn't provide code and follows a unique test-first approach, describing only test specifications and algorithms.

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The first challenge was figuring out which wires went where. Joseph Abrahamson and I used an oscilloscope to trace the signals from the tube’s neck board. We were looking for the RGB color lines, horizontal sync, vertical sync, and ground connections.

The Pokémon TCG