build: scalable TTF reader fonts in X4 Pro light-sleep envs (-361 KB flash) - #52
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x4-pro and x4-pro-debug already build with CROSSINK_SCALABLE_FONTS and FreeInkFont, which ship Bitter and Lexend Deca as TTF outlines instead of the bitmap headers. The light-sleep envs extend firmware_tuned and never got those flags, so they still embedded ~1.5 MB of bitmap reader fonts. x4-pro-light-sleep: 6,235,801 -> 5,875,029 B (-360,772 B, 95.2% -> 89.6%). Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_013k1W4UZTzyPQnTVXwZUbkS
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_013k1W4UZTzyPQnTVXwZUbkS
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Requested by Clankmaster · project thread
Before:
x4-pro-light-sleepandx4-pro-light-sleep-debugextendfirmware_tunedwithoutCROSSINK_SCALABLE_FONTS. They embed about 1.5 MB of bitmap Bitter and Lexend Deca headers, and the image is 6,235,801 B (95.2% of the app partition).After: both envs build like
x4-pro/x4-pro-debug. Bitter and Lexend Deca ship as TTF outlines (lib/ScalableFont) rasterized by FreeInkFont.x4-pro-light-sleepmeasures 5,875,029 B (-360,772 B, 89.6%). Static DRAM grows 3,304 B.How: add the
FreeInkFontlib_dep and the four font flags from thex4-proenv (CROSSINK_SCALABLE_FONTS,FREEINK_FONT_ENABLE_AUTOHINT,FREEINK_FONT_ENABLE_NATIVE_HINTING,FREEINK_FONT_ENABLE_MONOCHROME) to both light-sleep envs.Verify on hardware (X4 Pro, light-sleep build): open an EPUB in Bitter and in Lexend Deca and step through the sizes, including the new 8-22 pt range. Existing section caches re-layout once because the font IDs change.
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https://claude.ai/code/session_013k1W4UZTzyPQnTVXwZUbkS
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