nx_png.nx

buildroot/runtime/nx_png.nx

10261 B268 linesdepth 3pulls 3 transitivereach 169 importersview sourcekind librarytopic png

docs dependencies structs consts functions

about

nx_png.nx -- SOVEREIGN PNG (RGB8) encoder in NishiLang. No zlib/libpng/python: adaptive per-scanline FILTERING (None/Sub/Up/Avg/Paeth, min-abs-sum heuristic) + REAL DEFLATE compression (nx_deflate_enc, LZ77 + fixed Huffman) -- so renders ship compact + full-resolution. CRC32 (chunk) + Adler32 (zlib) pure integer. Upgraded 2026-07-04 from stored (uncompressed) blocks; same write_png() contract, valid PNG out, much smaller. license_tier: ORIGINAL

dependencies 2 imports · 165 importers

diagram shows first 10 each side; +0 more imports, +155 more importers in the complete lists below.

imports: nx_syscalls.nxnx_deflate_enc.nx

imported by: _imgscramble.nxnx_aa_gate.nxnx_adnet_banner_gen.nxnx_anat_rig.nxnx_anat_sov.nxnx_anat_sov_clean.nxnx_anatstack_gate.nxnx_apng_decode.nxnx_arcade_hud_gate.nxnx_arcade_render.nxnx_articulate_gate.nxnx_assetvariant_gate.nxnx_authorgen_gate.nxnx_authorworld_gate.nxnx_ballistics_gate.nxnx_being_showcase.nxnx_body_figure_gate.nxnx_bodyatlas_explorer.nxnx_bodyatlas_gate.nxnx_bodyatlas_mesh_gate.nxnx_bodybind_gate.nxnx_boxtex_gate.nxnx_bunny_gate.nxnx_camera_anim_gate.nxnx_cast_gen.nxnx_chaos_gate.nxnx_char_custom_gate.nxnx_char_gen.nxnx_char_groom_gate.nxnx_char_layers_gate.nxnx_char_scene.nxnx_cornell_dyn_gate.nxnx_cornell_gate.nxnx_creaturegen_gate.nxnx_diversity_gate.nxnx_diversity_veg_gate.nxnx_donor_native.nxnx_eco_graph_forest.nxnx_eco_graph_png.nxnx_engine_lod_gate.nxnx_engine_phys_gate.nxnx_engine_scene_gate.nxnx_engine_stream_gate.nxnx_entity_gate.nxnx_face_carve_gate.nxnx_face_expr_gate.nxnx_face_project_gate.nxnx_face_r2.nxnx_face_style_gate.nxnx_faceanat_gate.nxnx_faceanat_morph_gate.nxnx_faceanat_stereo_gate.nxnx_fluid_gate.nxnx_footplant_gate.nxnx_fpga_cpu_dc_gate.nxnx_fpga_dc_gate.nxnx_fpsworld_gate.nxnx_galx_thumb.nxnx_galx_upscale.nxnx_game_adventure_gate.nxnx_game_audio_gate.nxnx_game_city_gate.nxnx_game_display_gate.nxnx_game_loop_gate.nxnx_game_pong_gate.nxnx_game_racing_gate.nxnx_game_rts_gate.nxnx_game_sandbox_gate.nxnx_game_scaffold.nxnx_game_scaffold_gate.nxnx_game_shmup_gate.nxnx_game_tbs_gate.nxnx_game_td_gate.nxnx_game_thirdperson_gate.nxnx_game_tycoon_gate.nxnx_gassim_gate.nxnx_gen_explorer.nxnx_gen_gate.nxnx_genloop_gate.nxnx_gfx_bloom_gate.nxnx_gfx_iso_scene_gate.nxnx_gfx_scene_tex_gate.nxnx_gfx_tex_gate.nxnx_gi_gate.nxnx_gltf_load_gate.nxnx_gop_efi_gate.nxnx_gop_present_gate.nxnx_gsplat_aniso_gate.nxnx_gsplat_elara_gate.nxnx_gsplat_face_gate.nxnx_gsplat_gate.nxnx_gsplat_optimize_gate.nxnx_gsplat_photofit_gate.nxnx_gsplat_showcase.nxnx_gt_annotations_gate.nxnx_hands_gate.nxnx_ik_gate.nxnx_indoor_gate.nxnx_isosurf_gate.nxnx_kinetics_gate.nx +65 more (shown cap 100 declared)

structs

none

consts

8	const K_MAGIC_65521: i64 = 65521
9	const K_MAGIC_65536: i64 = 65536

functions

11	func png_crc32(buf: *u8, off: i64, len: i64) -> i64 called by 4: ad_build_png write_png write_png_buf write_png_z
26	func png_adler32(buf: *u8, off: i64, len: i64) -> i64 called by 3: write_png write_png_buf write_png_z
37	func png_be32(b: *u8, o: i64, v: i64) -> i64 called by 4: ad_build_png write_png write_png_buf write_png_z
44	func png_paeth(a: i64, b: i64, c: i64) -> i64 { // a=left b=up c=upleft called by 2: write_png write_png_buf
56	func png_sabs(v: i64) -> i64 { var x: i64 = v & 0xff; if x > 127 { x = 256 - x } return x } called by 2: write_png write_png_buf
57	func png_g(img: *u8, w3: i64, r: i64, j: i64) -> i64 { // safe fetch, 0 outside bounds called by 2: write_png write_png_buf
64	func write_png(fb: i64, w: i64, h: i64, path: u8) -> i64 called by 160: main main abg_emit main main main+154 calls 11: sys_mmap png_g png_paeth png_sabs dfe_compress png_be32+5
178	func write_png_buf(fb: i64, w: i64, h: i64, out: u8) -> i64 called by 1: sv_do_variant calls 8: sys_mmap png_g png_paeth png_sabs dfe_compress png_be32+2