nx_ttf_raster.nx

buildroot/runtime/nx_ttf_raster.nx

10569 B257 linesdepth 3pulls 3 transitivereach 0 importersview sourcekind tooltopic ttf

docs dependencies structs consts functions

about

nx_ttf_raster.nx -- SOVEREIGN TrueType RASTERIZER (the font engine for the Nishi browser + OS). Parses a real .ttf we emitted (sfnt dir -> head/cmap/loca/glyf), maps chars via cmap format-4, decodes glyf outlines (contours, on/off-curve flags, coord deltas incl. short/same/repeat), FLATTENS quadratic Beziers, and SCAN-CONVERTS the filled outline (nonzero winding, per-pixel ray test) to a pixel grid -- printed as ASCII so we can SEE our own font render through our OWN engine (round-trip: nx_font_ttf_emit -> .ttf -> nx_ttf_raster -> pixels). No FreeType, no external anything. Renders "NISHI". license_tier: ORIGINAL expect_exit: 0

dependencies 1 imports · 0 importers

imports: nx_syscalls_x86_64.nx

imported by: nobody (leaf or entry point)

call flow from main pre-order; caps 40 nodes / depth 6 declared; ↻ = already shown

structs

none

consts

8	const K_MAGIC_32768: i64 = 32768
9	const K_MAGIC_65536: i64 = 65536
10	const K_MAGIC_16777216: i64 = 16777216
11	const K_MAGIC_2048: i64 = 2048
12	const K_MAGIC_4096: i64 = 4096

functions

14	func sw(s: *u8) -> i64 { var n: i64=0; while s[n]!=(0 as u8){n=n+1} sys_write(1,s,n); return 0 } called by 1: main
15	func rd16(b: u8, o: i64) -> i64 { return (b[o] as i64)256 + (b[o+1] as i64) } called by 4: rd16s find_table cmap_lookup glyph_edges
16	func rd16s(b: *u8, o: i64) -> i64 { let v: i64=rd16(b,o); if v>=K_MAGIC_32768 { return v-K_MAGIC_65536 } return v } called by 3: cmap_lookup glyph_edges main calls 1: rd16
17	func rd32(b: u8, o: i64) -> i64 { return (b[o] as i64)K_MAGIC_16777216 + (b[o+1] as i64)K_MAGIC_65536 + (b[o+2] as i64)256 + (b[o+3] as i64) } called by 3: find_table glyph_edges main
18	func bit(f: i64, m: i64) -> i64 { if (f/m)%2 == 1 { return 1 } return 0 } called by 1: glyph_edges
20	func find_table(b: *u8, t0: i64, t1: i64, t2: i64, t3: i64) -> i64 called by 1: main calls 2: rd16 rd32
29	func cmap_lookup(b: *u8, sub: i64, c: i64) -> i64 called by 1: main calls 2: rd16 rd16s
50	func glyph_edges(b: u8, glyf: i64, loca: i64, locfmt: i64, gid: i64, ex0: i64, ey0: i64, ex1: i64, ey1: *i64, called by 1: main calls 4: rd16 rd32 rd16s bit
115	func inside(gx: i64, gy: i64, ex0: i64, ey0: i64, ex1: i64, ey1: i64, ne: i64) -> i64 called by 1: main
134	func bayer(x: i64, y: i64) -> i64 called by 1: main
143	func main() -> i64 calls 8: sw find_table rd16s rd32 cmap_lookup glyph_edges+2