Embedded render fonts

This folder holds OpenSans-Regular.ttf, which EncDotNet.S100.Renderers.Skia embeds as a resource. SkiaDisplayListRenderer uses it to draw text labels when the host has no usable system font. You don't need to reference or configure it.

When the fallback font is used

The renderer draws labels with SKTypeface.Default. If that typeface has no glyphs, the renderer uses the embedded Open Sans face instead.

This happens on Linux when you ship the self-contained SkiaSharp.NativeAssets.Linux.NoDependencies native library on a machine without fontconfig and a font package. That native library doesn't load fontconfig, so SKTypeface.Default resolves to an empty typeface and labels would otherwise render blank. For when to use that native library, see Linux arm64 native dependency.

When the host does expose system fonts, as desktops and CI runners with fontconfig do, the renderer uses SKTypeface.Default unchanged. Visual regression baselines rendered on those hosts don't change.

Licence

Open Sans is licensed under the Apache License, Version 2.0 (Copyright 2010-2011, Google Inc.; designed by Steve Matteson). The full licence text and attribution are in LICENSE-OpenSans.txt, and the font is listed in the repository's third-party notices.

It's the same Open Sans face that the official S-100 portrayal catalogues already redistribute, at EncDotNet.S100.Specifications/content/**/pc/Fonts/OpenSans-Regular.ttf.