This post discusses the implementation of the Stack Blur algorithm for efficient CPU image blurring. The author shares their experience using this algorithm for building cross-platform audio plugins and highlights the benefits of using CPU blurring when GPU access is limited. They explain the concept of Stack Blur and its use in creating a smooth Gaussian blur effect. The post provides a detailed walk-through of the implementation, discussing the stack blur queue, its implementation, and the use of circular buffers. The author also explores optimizations and benchmarks different implementations of Stack Blur.
https://melatonin.dev/blog/implementing-marios-stack-blur-15-times-in-cpp/