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gum-kernsmith-integrations

Integrates KernSmith runtime bitmap-font rasterization into Gum across MonoGame, KNI, FNA, and Raylib.

614|78|Updated Mar 11, 2015
Search Tags:#Wasm#gum#monogame#raylib#bitmap font#font rasterization#kernsmith
One-click install
npx skills add https://github.com/vchelaru/Gum --skill gum-kernsmith-integrations
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: gum-kernsmith-integrations
Source: https://github.com/vchelaru/Gum/tree/main/.claude/skills/gum-kernsmith-integrations
Command: npx skills add https://github.com/vchelaru/Gum --skill gum-kernsmith-integrations

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Gum normally relies on pre-generated .fnt/.png font files produced by the bmfont.exe pipeline, which complicates runtime font changes and cross-platform builds. This Skill explains how the optional KernSmith.* NuGet packages bridge the KernSmith in-memory BMFont rasterizer into each Gum runtime so fonts are rasterized on the fly.

Core Features & Use Cases

  • Package mapping: Documents the role of each package — KernSmith.GumCommon (BmfcSave to FontGeneratorOptions mapping), KernSmith.MonoGameGum, KernSmith.KniGum, KernSmith.FnaGum, and KernSmith.RaylibGum.
  • Runtime font wiring: Explains how each platform package plugs into CustomSetPropertyOnRenderable.InMemoryFontCreator so a game rasterizes fonts at startup instead of loading pre-generated files.
  • wasm/AOT rasterizer guidance: Details the StbTrueType backend requirement for browser-wasm/AOT, including the manual RuntimeHelpers.RunClassConstructor call needed because reflection-based backend discovery is trimmed.
  • Use Case: A MonoGame developer targeting browser-wasm adds KernSmith.MonoGameGum plus KernSmith.Rasterizers.StbTrueType, sets InMemoryFontCreator at startup, and avoids shipping .fnt/.png assets entirely.

Quick Start

Explain how to wire KernSmith runtime font generation into my Gum MonoGame project and what extra steps are needed for a browser-wasm build.

Frequently Asked Questions about gum-kernsmith-integrations

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I use KernSmith for runtime font generation in Gum?▼

Reference the KernSmith package matching your runtime (KernSmith.MonoGameGum, KernSmith.KniGum, KernSmith.FnaGum, or KernSmith.RaylibGum) and set CustomSetPropertyOnRenderable.InMemoryFontCreator at game startup. Gum then rasterizes fonts in memory instead of loading pre-generated .fnt/.png files.

What is the difference between KernSmith.GumCommon and the platform packages?▼

KernSmith.GumCommon is the shared mapping layer converting Gum's BmfcSave settings into KernSmith FontGeneratorOptions. The platform packages (MonoGameGum, KniGum, FnaGum, RaylibGum) provide the runtime-specific font creator that produces each framework's font type.

Does KernSmith font generation work on browser-wasm or AOT builds?▼

Only with the StbTrueType rasterizer backend, the sole pure-C# backend. You must reference KernSmith.Rasterizers.StbTrueType yourself and call RuntimeHelpers.RunClassConstructor on StbTrueTypeRasterizer, since reflection-based backend discovery is trimmed under wasm/AOT.

Why do I get a backend is not registered error with KernSmith on wasm?▼

KernSmith discovers rasterizer backends via reflection, which is trimmed away under wasm/AOT publish, causing a silent registration failure. Fix it by explicitly calling RuntimeHelpers.RunClassConstructor(typeof(StbTrueTypeRasterizer).TypeHandle) before generating fonts.

Is a KernSmith package reference in my .csproj a conflict with Gum.MonoGame?▼

No, it is expected. KernSmith.* packages are opt-in add-ons a game project references directly alongside Gum.MonoGame or other Gum runtimes. If InMemoryFontCreator is never set, Gum simply falls back to the pre-generated bmfont.exe pipeline.

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