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Turn the early tail on by default (tail_early = 1): the game starts its next frame while the graphics card runs the last one's upscaler and interface, and a frame whose end hands the game anything else runs as before; tail_early = 0 turns it off.

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
chrg6
2026-11-13 08:58:03 -05:00
parent 482f7fdfb5
commit e4df494048
3 changed files with 8 additions and 6 deletions
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9
nx2navi.ini.example
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@@ -94,14 +94,15 @@
# With 1 a worker records each long run of draws while the submitting thread waits for it: no faster, it checks that
# the pictures stay the same.
# replay_workers = auto
# EXPERIMENTAL. 1 lets the game start on its next frame while the graphics card still runs the end of the last one: the
# 1, the default, lets the game start on its next frame while the graphics card still runs the end of the last one: the
# upscaler (FSR 4, FSR 3.1 or DLSS) and the interface drawn after it. The graphics card runs the same work, with the
# copies of what it wrote for the game moved before that end, and the game's waits end once those copies and the
# results it reads are there. A frame whose end hands the game anything else runs as before. Default: 0. Standing in
# Hyrule Field on an RX 7900 XT with FSR 4: 50.7 instead of 42.5 fps, and 63.5 instead of 49.4 with replay_workers = 3.
# results it reads are there. A frame whose end hands the game anything else runs as before. Default: 1 (0 up to
# 0.9.2); 0 turns it off. Standing in Hyrule Field on an RX 7900 XT with FSR 4: 50.7 instead of 42.5 fps, and 63.5
# instead of 49.4 with replay_workers = 3.
# Does nothing without one of those upscalers, nor with the lazy write-back (the default on NVIDIA and Intel cards).
# Also in the menu: Game, Testing, Start next frame early.
# tail_early = 0
# tail_early = 1
# EXPERIMENTAL, with replay_workers. replay_pipe = N (1 to 4, default 0): the submitting thread goes on past up to N
# groups its workers still record. replay_small = N (0 to 63, default 0, needs replay_pipe): a group of N draws or more
# that is too small to share out (fewer than 64 draws) goes whole to one worker; 64 or more reads as 63. Kokiri Forest

3
runtime/cfg.c
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@@ -300,7 +300,8 @@ static const CfgMeta metas[] = {
{"ASYNC_PREEMPT", "1", "0|1|2", RESTART}, {"REPLAY_ASYNC", "0", "0|1", RESTART},
{"REPLAY_PIPE", "0", "0..4", RESTART},
{"REPLAY_WORKERS", "auto", "auto|0|1|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16", RESTART}, // vk_exec.c rw_init, vk_exec_replay_workers_auto
{"TAIL_EARLY", "0", "0|1", RESTART}, // vk_exec.c "the early tail"
// vk_exec.c "the early tail"; on by default since 0.10.0
{"TAIL_EARLY", "1", "0|1", RESTART},
{"REPLAY_SMALL", "0", "0..63", RESTART}, // vk_exec.c group_start
{"FREE_CORES", "0", "0|1", RESTART}, {"TIMER_1MS", "1", "0|1", RESTART},
// dynamic resolution (dynres.c): the scene follows the GPU time toward DYN_RES_TARGET milliseconds

2
runtime/vk_exec.c
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@@ -1135,7 +1135,7 @@ static int split_n = -1, split_idle, split_in_pass, split_draws, split_at, part_
static uint64_t split_ns, part_t0;
static uint64_t n_parts, n_subs, n_idle_parts, n_pass_splits, n_cuts;
// ---- the early tail (NX2NAVI_TAIL_EARLY, default 0)
// ---- the early tail (NX2NAVI_TAIL_EARLY, default 1 since 0.10.0; 0 turns it off)
// Standing in Hyrule Field with FSR 4 (RX 7900 XT, 2026-11-13) a frame's main submission ends with one part of 4.7 ms
// of GPU time, the temporal upscaler and the interface drawn after it, and one of 1.4 ms, the write-backs of what the
// shaders wrote into VRAM mirrors. The game waits for all of it before it writes the next frame's data (the wait after