How Blur Works in Video Games

▤ Summary

This article explains how blur effects work in video games using WebGL and GLSL shaders. It walks through box blur, Gaussian blur, and separable Gaussian blur, showing how each approach samples textures on the GPU. It also compares performance tradeoffs such as texture taps, kernel size, and the cost of one-pass versus two-pass rendering. The article includes code examples and benchmarks to illustrate how blur impacts frame rate and rendering efficiency.

▦ Linked Companies

NVIDIA Corporation

$1B+