nx_donor_native.nx source

1// nx_donor_native.nx -- FIRST-BIT-NATIVE render of a DONOR asset (operator law: everything on nishi os/browser/lang until forced third-party) MOTION VISUAL for the benchmark pages: load our .glb 2// with OUR loader, rasterize K turntable frames with OUR renderer, encode with OUR APNG writer. 3// No host GL, no third-party code anywhere in the chain: model -> render -> encode is all nishi, 4// and the output plays in any browser (APNG IS a PNG) including the Nishi browser's own decoders. 5// Also writes frame 0 as the native STILL. Composes nx_gltf_load + nx_trimesh + nx_png + nx_apng_write. 6// license_tier: ORIGINAL No hw writes (Rule 26). expect_exit: 0 7import "nx_syscalls.nx" 8import "nx_png.nx" 9import "nx_trimesh.nx" 10import "nx_gltf_load.nx" 11import "nx_apng_write.nx" 12const NT_MAGIC_6283: i64 = 6283 13const NT_MAGIC_2600: i64 = 2600 14 15// sized to the edge serve buffer: NX_SD2_DYN_CAP = 8MiB; 20 frames @ 240x368 RGB stored ~= 5.3MB 16const NT_W: i64 = 240 17const NT_H: i64 = 368 18const NT_FRAMES: i64 = 20 19const NT_BG: i64 = 24 + 26*256 + 34*65536 20 21func nt_w(s: *u8) -> i64 { var n: i64=0; while s[n]!=(0 as u8){n=n+1} sys_write(1,s,n); return 0 } 22func nt_num(v: i64) -> i64 { 23 let b: *u8 = sys_mmap(32) 24 var x: i64 = v; var i: i64 = 31 25 if x == 0 { b[i]=48 as u8; i=i-1 } 26 while x > 0 { b[i]=(48+x%10) as u8; x=x/10; i=i-1 } 27 sys_write(1,(b as i64+i+1) as *u8,31-i) 28 return 0 29} 30 31func main() -> i64 { 32 nt_w("=== nx_native_turntable -- glb -> nishi raster -> nishi APNG (zero foreign bits) ===\n" as *u8) 33 let ok: i64 = gltf_load("sites/nishifamily/exceed/vrm/seed-san.vrm" as *u8) 34 if ok != 1 { nt_w("FAIL: glb load\n" as *u8); sys_exit(1); return 1 } 35 nt_w("loaded verts=" as *u8); nt_num(tm_nv()); nt_w(" tris=" as *u8); nt_num(tm_nt()); nt_w("\n" as *u8) 36 37 let npx: i64 = NT_W * NT_H 38 let fb: *i64 = sys_mmap(npx * 8) as *i64 39 let zb: *i64 = sys_mmap(npx * 8) as *i64 40 let rgb: *u8 = sys_mmap(npx * 3 + 16) 41 42 let st_raw: *u8 = sys_mmap(NX_APNG_STATE_BYTES) 43 let st: *ApngState = st_raw as *ApngState 44 if apng_open(st, "knowledge/nishi_native_turntable.png" as *u8, NT_W, NT_H, NT_FRAMES, 6, 100) != 0 { 45 nt_w("FAIL: apng open\n" as *u8); sys_exit(1); return 1 46 } 47 48 var f: i64 = 0 49 while f < NT_FRAMES { 50 var i: i64 = 0 51 while i < npx { fb[i] = NT_BG; i = i + 1 } 52 trimesh_zclear(zb, npx) 53 let yaw: i64 = f * NT_MAGIC_6283 / NT_FRAMES 54 trimesh_render(fb, zb, NT_W, NT_H, yaw, 0-200, NT_MAGIC_2600, 520, 2) 55 // pack the i64 framebuffer (r + g<<8 + b<<16) into RGB bytes for the APNG encoder 56 i = 0 57 while i < npx { 58 let px: i64 = fb[i] 59 rgb[i*3] = (px & 255) as u8 60 rgb[i*3+1] = ((px >> 8) & 255) as u8 61 rgb[i*3+2] = ((px >> 16) & 255) as u8 62 i = i + 1 63 } 64 apng_frame(st, rgb) 65 if f == 0 { write_png(fb, NT_W, NT_H, "knowledge/nishi_native_still.png" as *u8) } 66 f = f + 1 67 } 68 apng_close(st) 69 nt_w("WROTE knowledge/nishi_native_turntable.png (" as *u8); nt_num(NT_FRAMES) 70 nt_w(" frames, native chain: nx_gltf_load -> nx_trimesh -> nx_apng_write) + nishi_native_still.png\n" as *u8) 71 sys_exit(0) 72 return 0 73}