The Book of Shaders
The gentlest on-ramp to fragment shaders — read it and "how is that even done" becomes "oh, that's noise and a gradient."
Effects it builds
Shader distortionA GLSL shader applied to an image or mesh that warps, ripples, or distorts it.→Noise textureA fine grain or noise texture overlaid on backgrounds — adding depth and analog feel.→Glitch shaderA visual corruption effect — horizontal tears, color channel separation, digital artifacts.→
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