code wiki / _hdl_build / nx_phong_gate.nx
nx_phong_gate.nx
buildroot/runtime/_hdl_build/nx_phong_gate.nx
about
nx_phong_gate.nx -- ★F3 BLINN-PHONG specular: prove a real specular HIGHLIGHT (a bright near-white spot where the
half-vector aligns with the normal) that flat/Lambert matte shading cannot produce. T1 shiny sphere has bright
highlight pixels, matte does not. T2 determinism. T3 gallery (sphere matte | sphere shiny | being shiny w/ skin sheen).
license_tier: ORIGINAL expect_exit: 0
dependencies 5 imports · 0 importers
imports: nx_syscalls.nxnx_png.nxnx_trimesh.nxnx_isosurf.nxnx_bodyatlas.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
| 17 | const BG: i64 = 24 + 26*256 + 34*65536 |
| 18 | const W: i64 = 300 |
| 19 | const H: i64 = 340 |
functions
| 11 | func hw(s: *u8) -> i64 { var n: i64=0; while s[n]!=(0 as u8){n=n+1} sys_write(1,s,n); return 0 } |
| 12 | func 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 } |
| 13 | func 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 |
| 15 | func bright(fb: *i64, n: i64) -> i64 { var c: i64=0; var i: i64=0; while i<n { let p: i64=fb[i]; if (p&255)>210 { if ((p>>8)&255)>210 { if ((p>>16)&255)>210 { c=c+1 } } } i=i+1 } return c } called by 1: main |
| 21 | func main() -> i64 |