code wiki / _hdl_build / nx_trimesh_gate.nx

nx_trimesh_gate.nx

buildroot/runtime/_hdl_build/nx_trimesh_gate.nx

9155 B158 linesdepth 4pulls 6 transitivereach 0 importersview sourcekind gate/proof
docsdependenciesstructsconstsfunctions

about

nx_trimesh_gate.nx -- ★prove the TRIANGLE shape kernel (operator: "we just have circles"). Now: real polygon meshes. T1 FLAT FACES + SHARP EDGES: a cube renders as FLAT-shaded facets (few dominant exact colours over big regions) -- the thing an ellipsoid/SDF blob CANNOT do (a blob is a smooth gradient of many shades). T2 Z-BUFFER: a NEAR mesh added FIRST is NOT overwritten by a FAR mesh added second -> depth (not draw order) decides. T3 determinism. T4 shape gallery -> knowledge/nx_trimesh.png (cube|tetra|octa|pyramid|prism|icosa|sphere|figure). license_tier: ORIGINAL expect_exit: 0

dependencies 3 imports · 0 importers

nx_syscalls.nx nx_png.nx nx_trimesh.nx nx_trimesh_gate.nx

imports: nx_syscalls.nxnx_png.nxnx_trimesh.nx

imported by: nobody (leaf or entry point)

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

main hw sys_write sys_mmap tm_reset sys_mmap ↻ tm_cube tm_vert tm_quad tm_tri clearfb trimesh_zclear trimesh_render it_cos4096 it_sin4096 it_sin4096 ↻ tm_isqrt sys_mmap ↻ tm_min3 tm_min tm_max3 tm_max tm_shadow_at tm_noise3 tm_hash3 filled modecount sys_mmap ↻ pn sys_mmap ↻ sys_write ↻ tm_nt bluish tm_icosa tm_vert ↻ tm_tri ↻ tm_uvsphere it_sin4096 ↻ it_cos4096 ↻ tm_vert ↻

structs

none

consts

58const BG: i64 = 24 + 26*256 + 34*65536
59const CW: i64 = 220
60const CH: i64 = 240

functions

11func hw(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 calls 1: sys_write
12func pn(v: i64) -> i64 { let b: *u8=sys_mmap(32) as *u8; var x: i64=v; var ng: i64=0; if x<0{ng=1;x=0-x} var i: i64=31; if x==0{b[i]=48 as u8;i=i-1} while x>0{b[i]=(48+x%10) as u8;x=x/10;i=i-1} if ng==1{b[i]=45 as u8;i=i-1} sys_write(1,(b as i64+i+1) as *u8,31-i); return 0 }
called by 1: main calls 2: sys_mmapsys_write
13func clearfb(fb: *i64, n: i64, c: i64) -> i64 { var i: i64=0; while i<n { fb[i]=c; i=i+1 } return 0 }
called by 1: main
14func filled(fb: *i64, n: i64, bg: i64) -> i64 { var c: i64=0; var i: i64=0; while i<n { if fb[i]!=bg { c=c+1 } i=i+1 } return c }
called by 1: main
15func bluish(fb: *i64, n: i64) -> i64 { var c: i64=0; var i: i64=0; while i<n { let p: i64=fb[i]; if (p>>16&255) > (p&255)+20 { c=c+1 } i=i+1 } return c }
called by 1: main
17func modecount(fb: *i64, n: i64, bg: i64, outdistinct: *i64) -> i64
called by 1: main calls 1: sys_mmap
39func facetedges(fb: *i64, W: i64, H: i64, bg: i64) -> i64
called by 1: main
62func main() -> i64
calls 23: hwsys_mmaptm_resettm_cubeclearfbtrimesh_zclear+17