The chat "Emoji style: Color" option renders the merged emoji in color (COLR/CPAL
Twemoji) instead of the monochrome NotoEmoji subset. This needs FreeType, which the
default stb_truetype rasterizer can't do for color glyphs.
- Vendor imgui_freetype (matches the bundled 1.92 ImFontLoader API) and embed a 1.4 MB
COLRv0 Twemoji font (no libpng/harfbuzz needed).
- CMake gains an optional FreeType path: native Linux/macOS use the system FreeType via
find_package; the mingw-w64 cross-compile has none, so build.sh --win-release now
cross-builds a minimal static FreeType (scripts/build-freetype-mingw.sh) and passes it
in. Absent FreeType => graceful monochrome fallback, so no build breaks.
- Typography selects the FreeType loader + the color font (LoadColor) when color emoji is
on, else the stb loader + mono subset; toggling reloads the atlas. Both the DX11 and
OpenGL backends already support the 1.92 RGBA dynamic atlas, so color glyphs render.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
DanS
a78b44246e