STRUCT VC_FONT(9)

💖 struct vc_font — bestie's guide to font structs 💖

okay so this is a page from the Kernel API Manual (yes, the kernel has a manual, slay) and it's all about struct vc_font — literally just a little struct that describes a font. that's the whole vibe. iconic, honestly. ✨

---

🌸 SYNOPSIS 🌸

here's the whole shape of it, bestie, exactly as-is:

struct vc_font {
    unsigned int width;
    unsigned int height;
    unsigned int charcount;
    const unsigned char *data;
 };

four fields. that's it. no notes. 💅

---

🎀 Members 🎀

• width — the width of a single glyph, measured in bits. one glyph, horizontally, in bits.
• height — the height of a single glyph, measured in scanlines. (scanlines = the horizontal lines the screen draws, iykyk.)
• charcount — how many glyphs live in this font. the headcount. the roster. 🫶
• data — the raw font data itself. the actual bytes. no cap.

---

🦋 Description 🦋

so the font data is organized as an array of glyphs — one after another, like a little lineup. each glyph is a bitmap, and here's the cute part: a set bit means foreground color, and an unset bit means background color. so every bit is literally a pixel decision. 🔥

the fields width and height store, for a single glyph, how many horizontal bits and how many vertical scanlines it has.

⚠️ watch out bestie: if width is not a multiple of 8, there are trailing bits left over to fill up the byte. those bits should not be drawn. do not draw them. that's the rule. 💀

the field data points to the first glyph's first byte. so it's like, the very start of the whole glyph party. 🎉

and the value charcount gives you the number of glyphs in the font.

also — and this is important — there are no empty scanlines between two adjacent glyphs. none. zero. they're packed right up against each other. periodt. 💅

---

👑 SEE ALSO 👑

• Kernel file ./include/linux/console_struct.h
• struct vc_state(9)

---

okay that's the whole page, bestie, you ate that 🍓 stay curious, keep reading structs, and remember: unset bits are background, not a personality. 💜

— signed off from ./include/linux, dated October 2026 — the struct vc_font(9) era, genuinely a moment 🌈⭐🧚