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Explore advanced cross-platform architecture techniques in this conference talk from CppCon 2024, where veteran game developer Noah Stein demonstrates how C++ 20 features enable high-performance code without sacrificing code clarity. Learn how to leverage Concepts and constraints alongside build tool configuration and preprocessor usage to create efficient cross-platform architectures, drawing from real-world experience in video games and embedded software development. Dive into practical examples through the implementation of quaternion classes for 3D graphics, starting with a universal unoptimized version and progressively adding optimizations for multiple architectures including SSE/AVX, Neon, and WebAssembly SIMD. Discover techniques for managing multiple specification revisions without modifying existing code, reducing redundancy and maintenance overhead while maintaining backward compatibility. The 55-minute presentation showcases how these principles can be applied across various domains, from scientific computing to general applications requiring multi-platform support.
