This article walks through the fundamentals of GLSL fragment shaders, comparing them to Canvas 2D drawing, explaining gl_FragColor, and providing step‑by‑step code examples for solid colors, linear and radial gradients, glowing rings, and diagonal line effects, all illustrated with images.
This article provides a comprehensive guide to WebGL1 shaders, explaining the roles of vertex and fragment shaders, GLSL syntax, storage qualifiers, precision, control structures, and demonstrates rendering a 3D cube with indexed drawing and reusable utility functions.
This article explains what shaders are, how they run on the GPU, and walks through each stage of the OpenGL graphics pipeline—from vertex processing to rasterization, fragment shading, and alpha testing—providing a comprehensive foundation for graphics programming.
This article introduces WebGL, covering its definition, history, basic concepts, working principles, and practical examples of drawing shapes using both native WebGL API and the Three.js framework.
This article demonstrates how to create a universal GLSL fragment shader that produces static and delayed dynamic split‑screen effects—similar to TikTok filters—by manipulating texture coordinates, handling arbitrary screen counts, and integrating multiple textures within the iOS GPUImage framework.
