Render Pipeline
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Mono.ttf
Font Tables
glyf
Contains the actual glyph data for each character.
cmap
Maps Unicode code points to glyph indices in the font.
hmtx
Contains horizontal metrics for each glyph, such as advance width
head
Contains global information about the font, such as version and bounding box.
maxp
Contains information about the maximum number of glyphs and points in the font.
And more..
There are many more tables in a TTF file, each serving a specific purpose.
A confession
The functioning of Harbor Browser is far too complex to be accurately represented by a single step-by-step diagram - it's impossible to summarize 30 thousand lines of code comprising deeply interlinked modules and services in just a few steps. The steps outlined above are a very high-level overview of the render pipeline, and do not capture the full complexity and nuance of how Harbor Browser actually works.