"Hello, World!"
summary
Survey of practical ways to render text on the GPU with concrete tradeoffs: canvas/texture atlases stay fastest and simplest but blur on scale; triangle geometry gives perfect crispness for transforms but costs CPU triangulation; signed distance field (SDF) shaders scale up to ~30x with one cheap fragment check and run fast in browsers like Chrome; coordinate-packed fields (CPF) store direction vectors per texel for crisper contours; full vector/ray approaches (per-cell Bézier grids) yield highest quality but are ~100–500× slower. Recommendation: use SDF with careful generator.
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chapters (10)
- 0:00Introduction to Hello World
- 1:35Font and text evolution
- 5:073D graphics and text
- 12:33Signed Distance Fields (SDF)
- 21:13SDF in the browser
- 25:30SDF alternatives: PCF and vector textures
- 31:51Ray tracing technology
- 34:00Text rendering methods compared
- 37:58Why this matters
- 40:07Q&A
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