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Session Name:

Extreme SIMD: Optimized Collision Detection in 'Titanfall'


Come discover how the 'Titanfall' team made already optimized continuous collision detection code more than twice as fast! This talk will go deep into the CPU and geometric optimizations that made this possible. Topics include AABB tree construction, rapid cache-friendly traversal of a bounding-volume hierarchy, and swept capsule vs triangle mesh collision. This presentation will show how to perform these operations efficiently on modern x64 CPUs' SIMD pipelines, including bit manipulation and register packing for branchless programming.

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  • GDC 2018
  • Earl Hammon
  • Respawn Entertainment
  • free content
  • Programming
  • Programming