Building a Real-Time Dithering Shader

A detailed walkthrough of creating a real-time dithering shader using GLSL and WebGL. The implementation uses a 4x4 Bayer matrix for ordered dithering, supports optional pixelation and grayscale modes, and integrates with the postprocessing library as a composable effect. The shader transforms smooth gradients into stylized pixel patterns reminiscent of 8-bit graphics, offering customizable parameters like grid size and pixel ratio for retro visual effects in modern web applications.