Ink Lines, Pixel Grids
0.100 USDCA scan of page 47, then the same drawing quantized to eight distance levels in a fragment shader — the wobble survives, but it becomes terraced.
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Shaders can turn your modern display into a nostalgic CRT. Here's how to get started with them in retrogaming.
How a Pencil Sketch Becomes a Shader
1.000 USDCA graphite sketch of a hill and grass becomes signed distance fields, then a fragment shader under 200 lines.
Shaders are small programs that run on your GPU, and they're the secret behind countless visual effects. This beginner-friendly guide explains the basics and shows you how to create retro-inspired looks.
The demoscene emerged in the 1980s as a subculture of programmers and artists pushing hardware to its limits. Their legacy continues to influence modern digital art, from shaders to indie games.
How I turn pencil scribbles into GPU shaders by extracting visual forces, prototyping in grayscale, and faking paper texture with noise.