This is the start of the Ray Trace video series. It discusses what Ray Tracing is and goes over the differences between GPU, or Real Time Ray Tracing, and CPU Ray Tracing.
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Ray Trace
1970 - Ray Tracing - An Introduction
1971 - Ray Tracing - Materials
1972 - Ray Tracing - GPU Lighting
1973 - Ray Tracing - GPU Camera Settings
1974 - Ray Tracing - CPU Lighting
1975 - Ray Tracing - CPU Camera Settings
1976 - Tips and Tricks for Creating Better Renderings
403 - 360 Panorama Renderings