code wiki / _hdl_build / nx_vsubpel_q_gate.nx
nx_vsubpel_q_gate.nx
buildroot/runtime/_hdl_build/nx_vsubpel_q_gate.nx
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nx_vsubpel_q_gate.nx -- proves QUARTER-pel motion (nx_vsubpel qp_refine) beats half-pel when content moves by a
quarter pixel: half-pel can only land on 0 / 0.5, so a 0.25px shift leaves a residual it can't remove, while
quarter-pel lands exactly on 0.25 -> ~zero residual. The H.264/VP9 motion-precision rung past half-pel.
dependencies 3 imports · 0 importers
imports: nx_syscalls.nxnx_gate_emit_lib.nxnx_vsubpel.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
| none |
functions
| 8 | func g_abs(v: i64) -> i64 { if v < 0 { return 0 - v } return v } called by 1: sad_at |
| 10 | func sad_at(cur: *u8, prev: *u8, W: i64, cx: i64, cy: i64, px: i64, py: i64, qx: i64, qy: i64, T: i64) -> i64 |
| 17 | func main() -> i64 |