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NX2navi/runtime/cfg.c
epicmeme546 5bdf583331 Add frame generation through AMD's FSR SDK 2.4 as a setting to try with FSR 4, and never generate a frame without the HUD-less picture. 
runtime/vk_fg4.cpp makes the frame generation swapchain and context with the libraries FSR 4 comes with
(amd_fidelityfx_loader_vk.dll and amd_fidelityfx_framegeneration_vk.dll beside the executable). vk_fg.cpp takes
that path only with fsr4_fg = 1 while FSR 4 is the upscaler; the default stays the FSR 3.1 library. The loader
picks the version for the card: the machine-learned FSR Frame Generation 4 on Radeon RX 9000 cards with Windows 11,
which is untested, and 3.1.6 elsewhere. On an RX 7900 XT (driver 26.10.1) it lists frame generation 3.1.6 and the
swapchains 4.0.0, which the driver brings and the loader chooses, and 3.1.7. The swapchain in place is wanted only
while its library is the one to use, so a change of the setting or of the upscaler, or a failure of this path,
takes it down as switching frame generation off does and the next present makes it with the other library.

The preparation gives this library the camera's position and axes, which FSR Frame Generation 4 requires, and a
scene scale of one metre a unit: with the 0.01 the FSR 3.1 path uses, version 3.1.6 drew grey translucent shapes
into the sky of its frames while the camera turned (160 captures of the screen during a camera sweep; clean with 1).

Both paths now generate a frame only when the picture without the HUD is there for it: generated from the
presented picture alone, the HUD would be warped with the scene behind it. In four configurations (21:9 with either
library, a 16:9 picture in a 21:9 window, a 1080 picture without HDR) every generated frame had it, and the log
counts the frames without. On screen, of the 6,404 pixels of the HUD's item button that stayed fixed through a
camera sweep with the FSR 3.1 library, 6,162 stayed fixed with this one.

Standing in Hyrule Field at 3440x1440 with FSR 4 Quality the game draws 43.0 frames a second with this path and
42.2 with the FSR 3.1 library, each shown twice over. One run changed the present mode, HDR, fullscreen, frame
generation, FSR 4, this setting and the upscaler in turn: 216 screenshots without a bad frame, and no failure.

The SDK's frame generation headers join runtime/third_party/ffx_sdk, unmodified. tools/make_kit.py and
tools/make_launcher.py take the third library from the --ffx4 folder when it is there, and tools/make_game.py
copies it beside the game.

Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>
2026-11-11 04:49:01 -05:00

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// nx2navi.ini: file-backed defaults for the NX2NAVI_* environment variables (docs/controls.md, nx2navi.ini.example).
// Format: "key = value" lines, '#' or ';' at the start of a line begins a comment, [sections] only group. A key is a
// variable name without "NX2NAVI_" (an optional NX2NAVI_ prefix is accepted), case-insensitive. A value is the rest of the
// line, trimmed, optionally in double quotes; an empty value counts as unset. The environment wins over the file.
//
// Live settings: cfg_set changes a value in memory (readers see the new pointer; the old string is kept, so a pointer
// cfg_get handed out stays valid) and cfg_save writes only the changed keys back, keeping the rest of the file.
// Readers take no lock: an entry is complete before n_entries counts it, and value pointers are swapped atomically.
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "cfg.h"
#include "discord_app.h"
#include "host.h"
#include "platform/platform.h"
#define PREFIX "NX2NAVI_"
#define PREFIX_LEN (sizeof PREFIX - 1)
#define CFG_MAX_KEYS 512
typedef struct { char *key, *value; int dirty, removed; } CfgEntry; // key upper-case, without the prefix; value NULL after cfg_reset
static CfgEntry entries[CFG_MAX_KEYS];
static int n_entries;
static unsigned version;
static PlatMutex set_lock = PLAT_MUTEX_INIT; // cfg_set, cfg_reset, cfg_save
static int save_ok = 1; // the last cfg_save_to wrote (or had nothing to write)
// Every name the runtime reads (and the patch sets in generated/), without the prefix. A file key outside this list is
// logged as unknown. A new variable goes here too, or its ini key logs a harmless "unknown key" line.
static const char *const known[] = {
"CORES", "TM_DISPATCH", "NVN2_CS_TABLE", "SKIP_SHADERS", "MOVIE_DEBAND", "MOVIE_FPS", "MOVIE_SKIP", "MOVIE_OVERLAY", "MOVIES", "NPLN", "NVN2_PROGRAMS", "NVN_TRAP", "OCARINA_REALTIME", "ONESHOT_BUDGET", "ONESHOT_WAIT_MS", "OCARINA_STEP", "PHYSICS_STEPS", "STEP_STEADY", "VI_HZ", "VI_VRR", "TIME_DUMP", "SHADER_DUMP", "SHOT_AFTER", "SHOT_DIR", "SHOT_EVERY", // Switch 2 port: movie skip (romfs.c), NVN2 proc traps (nvn_procs.c)
"AB", "AMIIBO_DIR", "ANISO", "APP_POOL", "ASPECT", "ASPECT_PATCH", "ASSUME_FOCUS", "ASTC", "ASTC_BC", "ASTC_TIME", "ASYNC_PREEMPT", "AUDIO", "AUDIO_CHANNELS", "AUDIO_DEVICE", "AUDIO_GAME_PRIO", "AUDIO_OFF", "AUDIO_PREFILL_MS", "AUDIO_STATS",
"BACKGROUND_WINDOW", "BIND_A", "BIND_B", "BIND_DOWN", "BIND_L", "BIND_LCLICK", "BIND_LEFT", "BIND_LSTICK_DOWN", "BIND_LSTICK_LEFT",
"BIND_LSTICK_RIGHT", "BIND_LSTICK_UP", "BIND_MINUS",
"BIND_PLUS", "BIND_R", "BIND_RCLICK", "BIND_RIGHT", "BIND_RSTICK_DOWN", "BIND_RSTICK_LEFT", "BIND_RSTICK_RIGHT", "BIND_RSTICK_UP",
"BIND_SHAKE",
"BIND_SKIP", "BIND_STATS", "BIND_UP", "BIND_X", "BIND_Y",
"BIND_ZL", "BIND_ZR", "BLOCK_VIEWS_3D", "CACHE_DIE", "CLOTH_REALTIME", "COLOR_BRIGHTNESS", "COMPUTE_KEEP", "COLOR_CONTRAST", "COLOR_GAMMA",
"COLOR_PRESET", "COLOR_SATURATION", "CONTACT_DEBUG", "CONTACT_SHADOWS", "CORE_DIAG", "CRIT", "CRIT_OUT",
"DESC_TEMPLATE", "DEVICE_PROFILE", "DISCORD_APP_ID", "DISCORD_IMAGE", "DISCORD_RPC", "DLAA", "DLAA_CAM_KEEP", "DLSS_IDLE_FREE", "DLAA_JITTER", "DLAA_MV", "DLAA_MASKDEBUG", "DLAA_MVDEBUG", "DLAA_OBJMV", "DLAA_SURVEY", "DLAA_TIMES", "DLSS", "DLSS_CHAR_MASK", "DLSS_PRESET", "DLSS_REACTIVE", "DUMP", "DUMP_BUF", "DUMP_DIR",
"DUMP_LOG", "DUMP_RAW", "DUMP_SHADERS", "DUMP_FILE", "DS3", "LOG_CS_BINDS", "LOG_TEX_FLAGS", "LOG_MESH", "MESH", "POOL", "NATIVE_TENSOR", "LOG_RCOND", "LOG_RT_SIZES", "DUMP_WHITE", "DUMP_AFTER", "DUMP_MOVIE", "SUBMIT_FINISH", "ACQUIRE_WAIT", "CRASH_FILTER_GUARD", "CS_FALLBACK", "EXEFS", "FEEDBACK", "FIX_C0", "FIX_ZERO", "FLIGHT", "FLIGHT_AT", "FLIGHT_DIR", "FLIGHT_FRAMES",
"FLIGHT_SPIKE_MS", "FLIGHT_THUMBS", "FLIGHT_EVERY", "FLUSH_SPAN", "FLUSH_UPLOAD", "FOG_CULL", "FOLIAGE_SHADOW_CULL", "FOLIAGE_SHADOW_VRS", "FOV", "FOV_PATCH", "FG_HUDLESS_SHOW", "FG_MULT", "FPS60", "FPS_LIMIT", "FRAMEGEN", "FRAMEGEN_MULTIPLIER", "FREEZE_IDLE", "FREE_CORES",
"FULLSCREEN", "FXAA", "GAME_ASPECT", "GAME_RES", "GPA", "GPA_EMPTY", "GPA_TWIN", "GPA_TWIN_MAX_KB", "GPL", "GPL_DRAW_BUILD", "GPL_FEEDBACK", "PIPE_AHEAD", "PIPE_FAST_WORKERS", "PIPE_LINK_DRAW_MS", "PROG_LEAD", "GPU", "GPU_INDEX", "GPU_PASSES", "GPU_NAME", "HDR", "HDR_BLOWOUT", "HDR_CONTRAST",
"HDR_EXPOSURE", "HDR_FLARE", "HDR_GAMMA", "HDR_GAME_NITS", "HDR_GRADE", "HDR_HIGHLIGHT_SAT", "HDR_HIGHLIGHTS", "HDR_HUE",
"HDR_LIVE",
"HDR_PEAK_NITS", "HDR_SATURATION", "HDR_SHADOWS", "HDR_TONEMAP", "HDR_UI_NITS", "HIGHFPS_FIX", "INPUT", "INPUT_RECORD", "INPUT_SCRIPT", "LANG", "LIB_PREBUILD",
"BIG_BUILD_FREE_MB", "BIG_BUILD_MAX_MB", "LIB_PREBUILD_BIG", "LIB_PREBUILD_BIG_BG", "LIB_PREBUILD_KEEP", "LIB_PREBUILD_THREADS", "LIB_WARM", "PIPE_LINK_MS", "FRAME_HOLD_MS", "PACE_SMOOTH", "OQ_BATCH", "GATE_WAIT_MS", "LOCALE", "LOD_GUARD", "LSTICK_DEADZONE", "MEMORY", "MEM_CENSUS", "MENU_LANG", "MENU_SOUND_VOLUME", "MENU_TEST",
"MENU_CURSOR", "MENU_CURSOR_LOG", "MENU_TEST_CLICK", "MENU_TEST_DIR", "MENU_TEST_SET", "MINIMAL_LAYOUT", "MICROPHONE", "MIRROR_GAP", "MODS_DIR", "MODS_DISABLED", "MODS_ORDER", "MODS_REBUILD", "MONITOR", "MOTION", "MOUSE_MODE", "MOUSE_DIRECT_PATCH", "MOUSE_SENS", "MOVIE_HOST", "MOVIE_PACE",
"MVOBJ_ALL", "MVOBJ_BANKS", "MVOBJ_EQUAL", "MVOBJ_EXACT", "MVOBJ_EXEC", "MVOBJ_NOC4", "MVOBJ_ONLY", "MVOBJ_TIMES", "MVPREV_CHECK", "MVPREV_GROW", "MVPREV_SKIP", "MVPREV_TRUST", "MV_CHECK",
"MV_SURVEY",
"ONE_PER_CORE", "OPERATION_MODE", "OUTPUT_RES", "PAD_LAYOUT", "PACE_HZ", "PASS_CRUMBS", "PATCH_OUTPUT", "PATCH_RES_FIXED", "PATCH_SCENE", "PATCH_WIDE_ASPECT", "PATCH_WIDE_HUD", "PATCH_WIDE_MOVIE", "PATCH_WIDE_OUT", "PATCH_WIDE_SCENE", "PCSS", "PCSS_K", "PERF_OVERLAY", "PERF_SLOW_MS", "PIPELINE_CACHE", "PIPELINE_CACHE_MAX_MB", "PIPE_BINARIES", "PIPE_BINARIES_MAX_MB", "PIPE_FEEDBACK", "PIPE_MEMO", "PIPE_PREBUILD", "PIPE_SKIP", "PIPE_SYNC", "PIPE_WAIT", "POWER_FULL", "TEX_SAME", "PRESENT_HELD", "HELD_SYNC",
"PREWARM_FULL", "PREWARM_WAIT_MS", "PREWARM_XLATE", "PROBE_MOVIE", "PROBE_MOVIE_SHOT", "PROFILE", "PROFILE_CHAINS", "PROFILE_DIR", "PROFILE_FRAMES", "PROFILE_REPLAY", "PROFILE_SLOW",
"PROFILE_MAIN", "PROFILE_RENDER", "PROMPTS", "PUSH_SKIP", "PUSH_STAGE", "RDOC", "RDOC_DIR", "RDOC_DLL", "REALTIME", "REC_END", "REEXEC",
"REFLEX", "RENDER_SCALE", "REPLAY_ASYNC", "RTSS", "RTSS_ENUM", "SCENE_SHARE",
"PRESNAP_PLACE",
"REPLAY_CHECK", "RESOLVE_CHECK", "RESTART_WAIT", "ROMFS", "ROMFS_INDEX", "ROMFS_MMAP", "ROMFS_MODS", "ROMFS_PATCHES",
"ROMFS_PROOF_DIR", "ROMFS_VERIFY", "RSTICK_DEADZONE", "RUMBLE", "RUMBLE_CURVE", "RUMBLE_STRENGTH", "RUMBLE_TRIGGERS", "SHADER_CACHE",
"SHADER_CACHE_FLUSH", "SHADER_CARRY", "SHADER_MEMO", "SHADOW_BULK_WRITE", "SHADOW_COMPARE", "SHADOW_RANGE", "SHADOW_RES", "SHADOW_SCALE", "SHARED_FONTS", "SHARPNESS", "SHOTS", "SHOTS_DIR",
"SVC_SLOW_MS",
"SHOTS_FULL", "SPEED_PROBE", "SPIN", "SPIN_HANDOFF_US", "SPLIT_DRAWS", "SPLIT_IDLE", "SPLIT_IN_PASS", "SPLIT_US", "SPV_MARK_TEST", "SPV_OVERRIDE", "STICK_DEADZONE", "STICK_SENS",
"SWKBD_ANSWER",
"SET_AT", "SWKBD_TEST", "TAA", "FSR4", "FSR4_FG", "FG4_VERSION", "FG4_SWAPCHAIN", "TEST_PAD", "TEST_PAD_AT", "TEST_PREPARE_SHADERS", "TEX_ALIAS", "TEX_DISUSE", "TEX_GEN_UNDO", "TEX_MEMO", "TEX_VRAM_PRESSURE", "TEX_RELEASED_MB", "TEX_REUSE", "TEX_COMMIT_FREE_MB", "TEX_PROC_COMMIT_MB", "TEX_EVICT", "TEX_COMMIT_EVICT", "MIRROR_EVICT", "VRAM_BUDGET_MB", "TIMER_1MS", "TRACE", "TXD_TRANSPOSE", "UBO_SNAPSHOT", "EVO_TRACE", "EVENT_AT_SYNC", "UPSCALER", "VK_DYN_A2C", "VK_DYN_VERTEX", "VK_NAN_PRESERVE", "VK_NOOPT", "VK_NO_FLOAT64",
"VK_PRESENT", "VK_RECONVERGE", "VK_NAN_BITS", "VK_RECORDER", "VK_SSBO_ALIGN", "VK_SUBGROUP", "VK_SUBGROUP_PIN", "VK_VALIDATION", "VOLUME", "VRAM_HEADROOM", "VS_OUTS",
"WALK_KEY", "WALK_SCALE", "WB_EXACT", "WB_FENCE_LIMIT", "WB_MERGE", "WB_NO_REUP", "WB_MERGE_MAX", "WB_PROBE", "WB_SPLIT", "WB_LAZY", "WB_LAZY_TOUCH", "WINDOW_SIZE", "XLATE", "XLATE_ID", "XLATE_KEEP", "XLATE_PROCS",
"ZSTD_CHECK", "ZSTD_NATIVE",
"BIND_REUSE", "DYN_DELTA", "STG_ARENA", "SUBMIT_BATCH", "ASTC_GPU_DESWIZZLE", "ASTC_SCRATCH_KEEP", "ASTC_ARENA",
"TEXUP_LOG_MS", "DYN_RES", "DYN_RES_TARGET", "DYN_RES_STEP", "TEXTURE_DETAIL",
"RECORDER_CORE", "RECORDER_PRIO", "REPLAY_TIME", "LOCK_TIME", "POOL_CREATE_BUDGET", "POOL_CREATE_MS", "POOL_LOAD_BACKLOG", "POOL_LOAD_MS",
"VMA_BLOCK_MB", "ASTC_BC_PROBE", "SYNC_WAKE_ALL", "LOG_ASYNC",
};
// The nx2navi.ini section a key cfg_set may write goes to when the file lacks it (nx2navi.ini.example's sections).
static const struct { const char *key, *section; } sections[] = {
{"FPS_LIMIT", "frame rate"}, {"FPS60", "frame rate"}, {"RTSS", "frame rate"},
{"REALTIME", "frame rate"}, {"CLOTH_REALTIME", "frame rate"}, {"HIGHFPS_FIX", "frame rate"},
{"PHYSICS_STEPS", "frame rate"}, {"STEP_STEADY", "frame rate"},
{"FULLSCREEN", "display"}, {"WINDOW_SIZE", "display"}, {"PERF_OVERLAY", "display"}, {"VK_PRESENT", "display"},
{"GPU_INDEX", "display"}, {"MONITOR", "display"}, {"OUTPUT_RES", "display"}, {"GAME_ASPECT", "display"}, {"GAME_RES", "display"}, {"RENDER_SCALE", "display"}, {"UPSCALER", "display"},
{"SHARPNESS", "display"}, {"ASPECT", "display"}, {"FOV", "display"}, {"ANISO", "display"},
{"TEXTURE_DETAIL", "display"},
{"COLOR_PRESET", "display"},
{"COLOR_BRIGHTNESS", "display"}, {"COLOR_CONTRAST", "display"}, {"COLOR_SATURATION", "display"},
{"COLOR_GAMMA", "display"}, {"HDR", "display"}, {"HDR_LIVE", "display"}, {"HDR_PEAK_NITS", "display"}, {"HDR_GAME_NITS", "display"},
{"HDR_UI_NITS", "display"}, {"HDR_GAMMA", "display"}, {"HDR_TONEMAP", "display"}, {"HDR_EXPOSURE", "display"},
{"HDR_HIGHLIGHTS", "display"}, {"HDR_SHADOWS", "display"}, {"HDR_CONTRAST", "display"}, {"HDR_SATURATION", "display"},
{"HDR_HIGHLIGHT_SAT", "display"}, {"HDR_BLOWOUT", "display"}, {"HDR_FLARE", "display"}, {"HDR_HUE", "display"},
{"HDR_GRADE", "display"}, {"SHADOW_RES", "display"},
{"DLAA", "display"}, {"FSR4", "display"}, {"FSR4_FG", "display"}, {"DLSS", "display"}, {"DLSS_PRESET", "display"}, {"DLSS_IDLE_FREE", "display"}, {"DLSS_CHAR_MASK", "display"}, {"FXAA", "display"},
{"FRAMEGEN", "display"}, {"FRAMEGEN_MULTIPLIER", "display"}, {"FG_MULT", "display"},
{"DEVICE_PROFILE", "display"}, {"ASSUME_FOCUS", "display"},
{"DISCORD_RPC", "discord"}, {"DISCORD_APP_ID", "discord"}, {"DISCORD_IMAGE", "discord"},
{"SHADOW_SCALE", "display"}, {"SHADOW_RANGE", "display"}, {"CONTACT_SHADOWS", "display"},
{"PCSS", "display"},
{"MODS_DIR", "mods"}, {"MODS_ORDER", "mods"}, {"MODS_DISABLED", "mods"}, {"MODS_REBUILD", "mods"},
{"MENU_LANG", "language"}, {"LANG", "language"}, {"OPERATION_MODE", "language"},
{"VOLUME", "audio"}, {"AUDIO_CHANNELS", "audio"}, {"AUDIO_DEVICE", "audio"}, {"MICROPHONE", "audio"}, {"MENU_SOUND_VOLUME", "audio"},
{"MOTION", "input"}, {"RUMBLE_STRENGTH", "input"}, {"RUMBLE_CURVE", "input"}, {"RUMBLE_TRIGGERS", "input"}, {"DS3", "input"},
{"PAD_LAYOUT", "input"}, {"PROMPTS", "input"}, {"STICK_DEADZONE", "input"}, {"LSTICK_DEADZONE", "input"}, {"RSTICK_DEADZONE", "input"},
{"STICK_SENS", "input"},
{"MENU_CURSOR", "input"}, {"MOUSE_MODE", "input"}, {"MOUSE_SENS", "input"}, {"WALK_KEY", "input"}, {"WALK_SCALE", "input"}, {"INPUT_RECORD", "input"},
{"BIND_A", "input"}, {"BIND_B", "input"}, {"BIND_X", "input"}, {"BIND_Y", "input"}, {"BIND_LCLICK", "input"},
{"BIND_RCLICK", "input"}, {"BIND_L", "input"}, {"BIND_R", "input"}, {"BIND_ZL", "input"}, {"BIND_ZR", "input"},
{"BIND_PLUS", "input"}, {"BIND_MINUS", "input"}, {"BIND_LEFT", "input"}, {"BIND_UP", "input"},
{"BIND_RIGHT", "input"}, {"BIND_DOWN", "input"}, {"BIND_LSTICK_LEFT", "input"}, {"BIND_LSTICK_UP", "input"},
{"BIND_LSTICK_RIGHT", "input"}, {"BIND_LSTICK_DOWN", "input"}, {"BIND_RSTICK_LEFT", "input"},
{"BIND_RSTICK_UP", "input"}, {"BIND_RSTICK_RIGHT", "input"}, {"BIND_RSTICK_DOWN", "input"}, {"BIND_SHAKE", "input"},
{"ASYNC_PREEMPT", "performance"}, {"REPLAY_ASYNC", "performance"}, {"FREE_CORES", "performance"},
{"DYN_RES", "performance"}, {"DYN_RES_TARGET", "performance"}, {"DYN_RES_STEP", "performance"},
{"RECORDER_CORE", "performance"}, {"RECORDER_PRIO", "performance"}, {"BIND_REUSE", "performance"},
{"DYN_DELTA", "performance"}, {"STG_ARENA", "performance"}, {"SUBMIT_BATCH", "performance"},
{"ASTC_GPU_DESWIZZLE", "performance"}, {"ASTC_SCRATCH_KEEP", "performance"}, {"ASTC_ARENA", "performance"}, {"POOL_CREATE_BUDGET", "performance"},
{"POOL_CREATE_MS", "performance"}, {"POOL_LOAD_BACKLOG", "performance"}, {"POOL_LOAD_MS", "performance"},
{"TIMER_1MS", "performance"}, {"PIPE_WAIT", "performance"}, {"PIPE_SKIP", "performance"}, {"ONESHOT_BUDGET", "performance"},
{"CACHE_DIE", "performance"}, {"ONE_PER_CORE", "performance"},
{"LIB_PREBUILD", "performance"}, {"LIB_PREBUILD_THREADS", "performance"}, {"LIB_WARM", "performance"}, {"PIPE_LINK_MS", "performance"}, {"PIPE_LINK_DRAW_MS", "performance"}, {"PIPE_AHEAD", "performance"}, {"PIPE_FAST_WORKERS", "performance"}, {"GPL_FEEDBACK", "performance"}, {"FRAME_HOLD_MS", "performance"}, {"PACE_SMOOTH", "performance"}, {"OQ_BATCH", "performance"}, {"GATE_WAIT_MS", "performance"}, {"PIPE_PREBUILD", "performance"},
{"COMPUTE_KEEP", "performance"},
{"PREWARM_XLATE", "performance"}, {"GPL", "performance"}, {"ASTC", "performance"}, {"MEMORY", "performance"},
{"TEX_ALIAS", "performance"}, {"TEX_DISUSE", "performance"}, {"TEX_GEN_UNDO", "performance"}, {"TEX_REUSE", "performance"}, {"TEX_VRAM_PRESSURE", "performance"}, {"TEX_PROC_COMMIT_MB", "performance"}, {"ASTC_BC", "performance"}, {"LOD_GUARD", "performance"}, {"FIX_C0", "performance"}, {"FIX_ZERO", "performance"},
{"BIND_SKIP", "performance"}, {"SHADER_CACHE_FLUSH", "performance"}, {"SHADER_CARRY", "performance"}, {"SHADER_MEMO", "performance"}, {"PIPE_MEMO", "performance"}, {"TEX_MEMO", "performance"}, {"DESC_TEMPLATE", "performance"},
{"PUSH_SKIP", "performance"}, {"SPLIT_DRAWS", "performance"}, {"SPLIT_IDLE", "performance"}, {"SPLIT_IN_PASS", "performance"}, {"SPLIT_US", "performance"}, {"VK_VALIDATION", "performance"},
{"VK_DYN_VERTEX", "performance"}, {"VK_DYN_A2C", "performance"}, {"VK_SUBGROUP_PIN", "performance"}, {"VK_RECONVERGE", "performance"},
{"VK_NAN_PRESERVE", "performance"}, {"VK_NAN_BITS", "performance"},
{"TRACE", "diagnostics"}, {"FLIGHT", "diagnostics"}, {"PASS_CRUMBS", "diagnostics"}, {"FLIGHT_SPIKE_MS", "diagnostics"},
{"WB_FENCE_LIMIT", "diagnostics"}, {"WB_MERGE", "diagnostics"}, {"WB_EXACT", "diagnostics"}, {"MEM_CENSUS", "diagnostics"}, {"WB_NO_REUP", "diagnostics"}, {"WB_PROBE", "diagnostics"}, {"WB_SPLIT", "performance"}, {"SHADOW_BULK_WRITE", "performance"}, {"WB_LAZY", "performance"}, {"WB_LAZY_TOUCH", "diagnostics"}, {"FLUSH_UPLOAD", "diagnostics"}, {"GPA_TWIN_MAX_KB", "diagnostics"},
{"WB_MERGE_MAX", "diagnostics"}, {"MV_SURVEY", "diagnostics"}, {"TEXUP_LOG_MS", "diagnostics"},
{"VMA_BLOCK_MB", "diagnostics"}, {"ASTC_BC_PROBE", "diagnostics"},
};
// The settings the menu shows: the value in effect when the key is unset, and what the key accepts. The only place a
// default lives: consumers read cfg_value / cfg_int / cfg_double / cfg_bool. A row with an empty default has no fixed
// value (it depends on the machine); its consumer reads cfg_get and keeps an "unset" branch.
#define LIVE 1
#define RESTART 0
// The lazy write-back (memory.c "Lazy write-back") is on where it has run: its fetch inside the access-fault handler
// has only ever run on Windows. With shadow storage it stays off whatever is set (vk_memory.c wb_lazy).
#ifdef _WIN32
#define WB_LAZY_DEFAULT "1"
#else
#define WB_LAZY_DEFAULT "0"
#endif
static const CfgMeta metas[] = {
// Screen
{"FULLSCREEN", "0", "0|1", LIVE}, {"WINDOW_SIZE", "1920x1080", NULL, LIVE},
{"VK_PRESENT", "mailbox", "mailbox|fifo|immediate", LIVE}, {"GPU_INDEX", "", NULL, RESTART},
{"MONITOR", "auto", NULL, RESTART}, // auto|primary|<1-based index>|<part of a monitor name> (gfx_window_win.c, gfx_window_sdl.c chosen_monitor)
{"PERF_OVERLAY", "off", "off|fps|full", LIVE},
{"OUTPUT_RES", "1920x1080", NULL, RESTART}, {"RENDER_SCALE", "game", "game|50|67|75|100|125|150|200", RESTART},
{"UPSCALER", "fsr", "fsr|bilinear", LIVE}, {"SHARPNESS", "80", "0..100", LIVE},
{"DLAA", "0", "0|1", LIVE}, {"DLSS", "dlaa", "dlaa|quality|balanced|performance|ultra_performance", LIVE},
{"DLSS_PRESET", "default", "default|k|j", LIVE}, {"DLSS_IDLE_FREE", "1", "0|1|2", RESTART}, {"TAA", "dlss", "dlss|fsr3", LIVE}, // vk_dlaa.c fsr3
{"FSR4", "0", "0|1", LIVE}, // vk_ffx.cpp vk_ffx_fsr4
{"FSR4_FG", "0", "0|1", LIVE}, // vk_fg.cpp use4
{"FRAMEGEN", "off", "off|fsr3|dlss", LIVE}, // vk_fg.cpp, vk_dlssg.c
{"FRAMEGEN_MULTIPLIER", "2", "2|3|4", LIVE}, // vk_dlssg.c: frames on screen per rendered frame with DLSS
// the same where DLSS's frame generation runs through NGX itself (gfx_present.c ng_multiplier): 2x to 6x or dynamic
{"FG_MULT", "2", "2|3|4|5|6|dynamic", LIVE},
{"DLSS_CHAR_MASK", "65", "0|35|65|100", LIVE}, {"FXAA", "1", "0|1", LIVE},
{"GAME_ASPECT", "16:9", "16:9|window|21:9|32:9", RESTART}, // widescreen.c
{"GAME_RES", "1440", "1080|1440|1800|2160|2880|window", RESTART}, // widescreen.c: the picture's height
{"ASPECT", "fit", "fit|stretch", LIVE}, {"FOV", "100", "70..140", LIVE},
{"ANISO", "game", "game|2|4|8|16", LIVE}, // vk_texture.c sampler_features, vk_sampler_aniso_live
{"TEXTURE_DETAIL", "auto", "auto|full|reduced|low", RESTART}, // vk_texture.c "texture detail", read at the first texture
// colour adjustment (vk_color.c); the preset is the menu's, the four values are what the present uses
{"COLOR_PRESET", "default", "default|vivid|clarity|custom", LIVE}, {"COLOR_BRIGHTNESS", "0", "-30..30", LIVE},
{"COLOR_CONTRAST", "100", "70..150", LIVE}, {"COLOR_SATURATION", "100", "50..200", LIVE},
{"COLOR_GAMMA", "1", "0.8..1.2", LIVE},
// HDR output (vk_hdr.c): off and the tone mapper apply at once (the HDR tonemap is spliced into the game's as
// shaders load whatever is set, vk_hdr_armed); native is the game's own and is asked for once, at start, which the
// menu's row says (vk_hdr_needs_restart). HDR_LIVE = 0 leaves the HDR path out of a run that starts with HDR off.
// The grading sliders: 50 leaves the picture as it is, exposure in percent.
{"HDR", "0", "0|1|native", LIVE}, {"HDR_LIVE", "1", "0|1", RESTART},
{"HDR_PEAK_NITS", "1000", "400..10000", LIVE}, {"HDR_GAME_NITS", "203", "48..500", LIVE},
{"HDR_UI_NITS", "203", "48..500", LIVE}, {"HDR_GAMMA", "2.2", "off|2.2|2.4", LIVE},
{"HDR_TONEMAP", "renodrt", "vanilla|renodrt", LIVE}, {"HDR_EXPOSURE", "100", "0..200", LIVE},
{"HDR_HIGHLIGHTS", "50", "0..100", LIVE}, {"HDR_SHADOWS", "50", "0..100", LIVE}, {"HDR_CONTRAST", "50", "0..100", LIVE},
{"HDR_SATURATION", "50", "0..100", LIVE}, {"HDR_HIGHLIGHT_SAT", "50", "0..100", LIVE},
{"HDR_BLOWOUT", "0", "0..100", LIVE}, {"HDR_FLARE", "0", "0..100", LIVE}, {"HDR_HUE", "100", "0..100", LIVE},
{"HDR_GRADE", "100", "0..100", LIVE},
{"DEVICE_PROFILE", "auto", "auto|desktop|deck", RESTART},
{"SHADOW_RES", "game", "game|256|512|768|1024|1536|2048", RESTART},
{"SHADOW_SCALE", "1", "1..4", RESTART}, {"SHADOW_COMPARE", "1", "0|1", RESTART}, // vk_texture.c
{"SHADOW_BULK_WRITE", "0", "0|1", RESTART}, // vk_memory.c shadow_write_back
{"SVC_SLOW_MS", "0", "0..60000", RESTART}, // kernel.c kern_svc: log services slower than this
{"SHADOW_RANGE", "100", "50..400", RESTART}, {"CONTACT_SHADOWS", "0", "0..100", RESTART},
{"PCSS", "0", "0..200", RESTART},
// Game
{"FPS_LIMIT", "60", "30|40|45|60|90|120|144|165|240|display|unlimited", LIVE}, {"FPS60", "1", "0|1", LIVE},
{"RTSS", "1", "0|1", RESTART}, // rtss_limit.c: RivaTuner Statistics Server takes the limit where it runs
{"REALTIME", "1", "0|1", RESTART}, {"CLOTH_REALTIME", "1", "0|1", RESTART},
{"MODS_REBUILD", "auto", "auto|off", RESTART},
{"HIGHFPS_FIX", "1", "0|1", RESTART},
{"LANG", "", "ja|en-US|fr|de|it|es|zh-CN|ko|nl|pt|ru|zh-TW|en-GB|fr-CA|es-419|zh-Hans|zh-Hant|pt-BR|pl", RESTART},
{"OPERATION_MODE", "docked", "docked|handheld", LIVE},
{"ASSUME_FOCUS", "1", "0|1", LIVE}, // read on every focus change (ov_system.c)
// Sound, Controls, Menu
{"VOLUME", "100", "0..100", LIVE}, {"MENU_SOUND_VOLUME", "80", "0..100", LIVE}, {"AUDIO_CHANNELS", "stereo", "auto|stereo|5.1", LIVE}, // audio_mixer.c audio_channels_live
{"AUDIO_DEVICE", "default", NULL, RESTART}, // default|<1-based index>|<part of a device name> (audio_mixer.c resolve_audio_device)
{"MICROPHONE", "1", "0|1", RESTART}, // ov_audio_input.c mic_on: 0 refuses the game's input streams
{"MOTION", "1", "0|1", LIVE}, {"RUMBLE_STRENGTH", "130", "0..300", LIVE}, {"RUMBLE_CURVE", "0.6", "0.2..1.5", LIVE},
{"RUMBLE_TRIGGERS", "0", "0|1", LIVE}, {"PAD_LAYOUT", "nintendo", "auto|nintendo|xbox|playstation", LIVE},
{"DS3", "0", "0|1", LIVE}, // input_ds3_win.c ds3_read: read a DualShock 3 directly; off: no HID scan
{"PROMPTS", "nintendo", "nintendo|xbox|playstation|steamdeck|pc", RESTART},
{"STICK_DEADZONE", "8", "0..50", LIVE}, {"STICK_SENS", "1", "0.1..3", LIVE}, // camera_speed.c cam_speed_tick
{"LSTICK_DEADZONE", "", "0..50", LIVE}, {"RSTICK_DEADZONE", "", "0..50", LIVE},
{"MOUSE_MODE", "direct", "stick|direct", LIVE},
{"MOUSE_SENS", "1", "0..10", LIVE}, {"MENU_CURSOR", "1", "0|1", LIVE},
{"WALK_KEY", "none", NULL, LIVE}, {"WALK_SCALE", "0.51", "0.2..0.9", LIVE},
{"MENU_LANG", "", "en|ru|pt-BR|zh-Hans", LIVE},
{"AMIIBO_DIR", "", NULL, LIVE},
// Discord Rich Presence (discord_rpc.c): on by default (it only talks to a Discord client running on this PC, and
// does nothing without one); the Game tab of the settings menu and the launcher's Settings switch it. The application's id and art key default to discord_app.h's NX2NAVI_DISCORD_*_DEFAULT.
{"DISCORD_RPC", "1", "0|1", LIVE},
{"DISCORD_APP_ID", NX2NAVI_DISCORD_APP_ID_DEFAULT, NULL, LIVE},
{"DISCORD_IMAGE", NX2NAVI_DISCORD_IMAGE_DEFAULT, NULL, LIVE},
// Advanced: scheduling
{"ASYNC_PREEMPT", "1", "0|1|2", RESTART}, {"REPLAY_ASYNC", "0", "0|1", RESTART},
{"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
{"DYN_RES", "0", "0|1", LIVE}, {"DYN_RES_TARGET", "16.7", "1..100", LIVE}, {"DYN_RES_STEP", "45", "8..600", LIVE},
// the recording thread: a core of its own (auto: with 12 or more logical processors) and the highest priority
// (vk_exec.c rec_claim)
{"RECORDER_CORE", "auto", "auto|0|1", RESTART}, {"RECORDER_PRIO", "1", "0|1", RESTART}, {"REPLAY_TIME", "0", "0|1", RESTART}, {"LOCK_TIME", "0", "0|1", RESTART}, {"POOL_CREATE_BUDGET", "16", "1..4096", RESTART}, {"POOL_CREATE_MS", "6", "0..100", RESTART}, {"POOL_LOAD_BACKLOG", "512", "0..65536", RESTART}, {"POOL_LOAD_MS", "50", "1..1000", RESTART},
// held submissions handed to the queue together (vk_sync.c, submit batching)
{"SUBMIT_BATCH", "4", "1..16", RESTART},
{"CACHE_DIE", "1", "0|1|ab", RESTART}, {"ONE_PER_CORE", "0", "0|1|ab", RESTART}, // perf.c cpu_placement
// shaders and pipelines
{"PIPE_WAIT", "default", "default|draw", RESTART}, {"PIPE_SKIP", "any", "strict|any|fullscreen", RESTART},
{"PIPE_LINK_MS", "6", "0..100", RESTART}, // vk_exec_draw.c link_budget
{"PIPE_LINK_DRAW_MS", "3", "1..50", RESTART}, // vk_exec_draw.c link_draw_ms
{"PIPE_AHEAD", "1", "0|1", RESTART}, // vk_exec.c vk_exec_ahead, vk_pipeline.c vk_pipeline_hint
{"GPL_FEEDBACK", "1", "0|1", RESTART}, // vk_pipeline.c gpl_feedback
{"PIPE_FAST_WORKERS", "1", "0|1", RESTART}, // vk_pipeline.c lib_worker, fast_take
{"FRAME_HOLD_MS", "120", "0..500", RESTART}, // vk_backend.c frame_hold
{"PACE_SMOOTH", "1", "0|1", RESTART}, // vk_backend.c pace_smooth
{"OQ_BATCH", "1", "0|1", RESTART}, // vk_exec_xfer.c oq_take
{"GATE_WAIT_MS", "10", "0..100", RESTART}, // vk_exec.c vk_exec_gate_wait
{"LIB_PREBUILD", "1", "0|1", RESTART}, {"LIB_PREBUILD_THREADS", "", "1..64", RESTART},
{"LIB_WARM", "1", "0|1|force", RESTART}, // vk_pipeline.c lw_start: the driver's cache of stage libraries, warmed when cold
{"PIPE_PREBUILD", "1", "0|1", RESTART}, {"PREWARM_XLATE", "", "1..64", RESTART}, {"GPL", "1", "0|1", RESTART},
{"LIB_PREBUILD_BIG_BG", "1", "0|1", RESTART}, {"PIPE_FEEDBACK", "1", "0|1|2", RESTART},
{"PIPELINE_CACHE_MAX_MB", "512", "0..65536", RESTART}, {"PIPE_BINARIES", "0", "0|1", RESTART}, {"ONESHOT_WAIT_MS", "30000", "0..60000", RESTART}, {"ONESHOT_BUDGET", "0", "0|1", RESTART}, {"PIPE_BINARIES_MAX_MB", "1024", "0..65536", RESTART}, {"BIG_BUILD_FREE_MB", "8192", "0..262144", RESTART},
{"BIG_BUILD_MAX_MB", "4096", "0..262144", RESTART},
// all|<count>: the compute pipelines the boot keeps, those dispatched most recently (vk_pipeline.c, compute-used.bin)
{"COMPUTE_KEEP", "512", NULL, RESTART},
{"SHADER_CARRY", "1", "0|1", RESTART}, // gfx_shader.c "Carry": a previous translator's translations until translated again
// textures and memory
{"ASTC", "auto", "auto|gpu|native|cpu", RESTART}, {"MEMORY", "auto", "auto|import|mirror|verify", RESTART},
{"TEX_ALIAS", "1", "0|1", RESTART}, {"TEX_DISUSE", "1", "0|1|2", RESTART}, {"TEX_GEN_UNDO", "1", "0|1", RESTART}, {"TEX_REUSE", "1", "0|1", RESTART}, {"TEX_VRAM_PRESSURE", "80", "0..100", RESTART}, {"ASTC_BC", "", "0|1", RESTART}, {"ZSTD_NATIVE", "1", "0|1", RESTART}, {"ZSTD_CHECK", "0", "0|1", RESTART},
{"STG_ARENA", "1", "0|1", RESTART}, {"ASTC_GPU_DESWIZZLE", "1", "0|1", RESTART},
{"ASTC_SCRATCH_KEEP", "0", "0|1", RESTART}, {"ASTC_ARENA", "0", "0|1", RESTART}, // vk_astc.c scratch_get, vk_texture.c astc_arena
// render fixes
{"LOD_GUARD", "1", "0|1", RESTART}, {"FIX_C0", "1", "0|1", RESTART}, {"FIX_ZERO", "1", "0|1", RESTART},
{"BIND_SKIP", "1", "0|1", RESTART}, {"SHADER_CACHE_FLUSH", "0", "0|1", RESTART}, {"SHADER_MEMO", "1", "0|1", RESTART}, {"PIPE_MEMO", "1", "0|1", RESTART}, {"TEX_MEMO", "1", "0|1", RESTART},
{"BIND_REUSE", "1", "0|1", RESTART}, {"DYN_DELTA", "1", "0|1", RESTART},
{"DESC_TEMPLATE", "1", "0|1", RESTART},
{"PUSH_SKIP", "1", "0|1", RESTART}, {"SPLIT_DRAWS", "64", "0..1000", RESTART},
{"SPLIT_US", "1000", "0..20000", RESTART}, {"SPLIT_IDLE", "0", "0|1", RESTART}, {"SPLIT_IN_PASS", "1", "0|1", RESTART},
// Vulkan
{"VK_VALIDATION", "0", "0|1", RESTART}, {"VK_DYN_VERTEX", "", "0|1", RESTART},
{"VK_DYN_A2C", "", "0|1", RESTART}, {"VK_SUBGROUP_PIN", "1", "0|1", RESTART},
{"VK_RECONVERGE", "1", "0|1", RESTART}, // vk_pipeline.c spirv_reconverge
{"VK_NAN_PRESERVE", "", "0|1", RESTART}, // vk_pipeline.c spirv_nan_preserve; unset: every driver but NVIDIA's
{"VK_NAN_BITS", "", "0|1", RESTART}, // vk_pipeline.c spirv_nan_bits; unset: AMD's driver for RDNA 1 and 2
{"VK_NOOPT", "0", "0|1", RESTART}, // vk_pipeline.c noopt_flag
// diagnostics
{"TRACE", "", NULL, RESTART}, {"FLIGHT", "0", "0|1", RESTART}, {"FLIGHT_SPIKE_MS", "100", "0..60000", RESTART},
{"WB_FENCE_LIMIT", "65536", "0..1073741824", RESTART}, {"WB_MERGE", "1", "0|1", RESTART}, {"WB_EXACT", "1", "0|1", RESTART}, {"MEM_CENSUS", "0", "0|1", RESTART}, {"WB_NO_REUP", "1", "0|1", RESTART}, {"WB_PROBE", "0", "0|1", RESTART}, {"WB_SPLIT", "1", "0|1", RESTART}, {"WB_LAZY", WB_LAZY_DEFAULT, "0|1", RESTART}, {"WB_LAZY_TOUCH", "0", "0..16", RESTART}, {"FLUSH_UPLOAD", "0", "0|1", RESTART}, {"GPA_TWIN_MAX_KB", "0", "0..1048576", RESTART},
{"WB_MERGE_MAX", "32", "1..256", RESTART}, {"TEXUP_LOG_MS", "0", "0..60000", RESTART}, // vk_texture.c vk_texstat_frame
{"VMA_BLOCK_MB", "64", "16..256", RESTART}, // vk_headroom.c vk_vma_block_size
{"ASTC_BC_PROBE", "0", "0|1", RESTART}, // vk_texture.c astc_probe_alpha
{"PASS_CRUMBS", "", "0|1", RESTART}, // vk_crumbs.c pass marks; unset: VK_AMD_buffer_marker only
{"INPUT_RECORD", "", NULL, RESTART},
};
static int is_known(const char *key) {
for (size_t i = 0; i < sizeof known / sizeof *known; i++)
if (!strcmp(known[i], key)) return 1;
return !strncmp(key, "CHEAT_", 6); // cheats.c and the cheat patch sets (tools/cheats.py)
}
static void clear(void) {
for (int i = 0; i < n_entries; i++) free(entries[i].key), free(entries[i].value);
n_entries = 0;
}
static char *trim(char *s) {
while (*s == ' ' || *s == '\t') s++;
char *e = s + strlen(s);
while (e > s && (e[-1] == ' ' || e[-1] == '\t' || e[-1] == '\r')) *--e = 0;
return s;
}
// The upper-case key without the prefix, in place.
static char *norm_key(char *key) {
for (char *p = key; *p; p++) *p = (char)toupper((unsigned char)*p);
return strncmp(key, PREFIX, PREFIX_LEN) ? key : key + PREFIX_LEN;
}
static void add(char *key, char *value, int line) {
key = norm_key(key);
size_t vl = strlen(value);
if (vl >= 2 && value[0] == '"' && value[vl - 1] == '"') value[vl - 1] = 0, value++;
if (!*key) return;
if (!is_known(key)) rt_log("cfg: nx2navi.ini line %d: unknown key '%s'", line, key);
if (!*value) return; // "key =" leaves the setting at its default
for (int i = 0; i < n_entries; i++)
if (!strcmp(entries[i].key, key)) { // a repeated key: the later line wins
free(entries[i].value);
entries[i].value = strdup(value);
return;
}
if (n_entries == CFG_MAX_KEYS) return;
entries[n_entries++] = (CfgEntry){strdup(key), strdup(value), 0, 0};
}
// 0.1.9 had the Xbox prompts as a pad layout: pad_layout = xbox_prompts is pad_layout = nintendo with prompts = xbox.
// Read as those two, which the menu shows and the next cfg_save writes; a prompts line of the file's own wins. The
// value still works from the environment (input_pad_layout_pick, input_prompts_pick).
static void migrate(void) {
CfgEntry *layout = NULL, *prompts = NULL;
for (int i = 0; i < n_entries; i++) {
if (!strcmp(entries[i].key, "PAD_LAYOUT")) layout = &entries[i];
if (!strcmp(entries[i].key, "PROMPTS")) prompts = &entries[i];
}
if (!layout || strcasecmp(layout->value, "xbox_prompts")) return;
free(layout->value);
layout->value = strdup("nintendo");
layout->dirty = 1;
if (!prompts && n_entries < CFG_MAX_KEYS) entries[n_entries++] = (CfgEntry){strdup("PROMPTS"), strdup("xbox"), 1, 0};
rt_log("cfg: nx2navi.ini pad_layout = xbox_prompts is read as pad_layout = nintendo and prompts = %s",
prompts ? prompts->value : "xbox");
}
// A file saved as UTF-16 (Notepad's "Unicode": the byte order mark FF FE or FE FF, then two bytes per character) as
// UTF-8 in a new buffer; NULL for any other file. Read as bytes such a file ends at the zero after its first character:
// no line was taken, and every setting kept its default without a word in the log.
static uint8_t *utf16_text(const uint8_t *d, uint64_t size) {
if (size < 2 || !((d[0] == 0xFF && d[1] == 0xFE) || (d[0] == 0xFE && d[1] == 0xFF))) return NULL;
int be = d[0] == 0xFE;
uint8_t *out = malloc((size_t)(size / 2) * 3 + 1), *o = out;
if (!out) return NULL;
for (uint64_t i = 2; i + 1 < size; i += 2) {
uint32_t c = be ? (uint32_t)d[i] << 8 | d[i + 1] : (uint32_t)d[i + 1] << 8 | d[i];
if (!c) break;
if (c >= 0xD800 && c < 0xDC00 && i + 3 < size) { // a pair: one character above U+FFFF
uint32_t lo = be ? (uint32_t)d[i + 2] << 8 | d[i + 3] : (uint32_t)d[i + 3] << 8 | d[i + 2];
if (lo >= 0xDC00 && lo < 0xE000) c = 0x10000 + ((c - 0xD800) << 10) + (lo - 0xDC00), i += 2;
}
if (c < 0x80) *o++ = (uint8_t)c;
else if (c < 0x800) *o++ = (uint8_t)(0xC0 | c >> 6), *o++ = (uint8_t)(0x80 | (c & 0x3F));
else if (c < 0x10000)
*o++ = (uint8_t)(0xE0 | c >> 12), *o++ = (uint8_t)(0x80 | (c >> 6 & 0x3F)), *o++ = (uint8_t)(0x80 | (c & 0x3F));
else
*o++ = (uint8_t)(0xF0 | c >> 18), *o++ = (uint8_t)(0x80 | (c >> 12 & 0x3F)),
*o++ = (uint8_t)(0x80 | (c >> 6 & 0x3F)), *o++ = (uint8_t)(0x80 | (c & 0x3F));
}
*o = 0;
return out;
}
int cfg_load(const char *path) {
clear();
__atomic_add_fetch(&version, 1, __ATOMIC_RELEASE); // the lookup memo (cfg_memo) forgets the freed strings
uint64_t size = 0;
uint8_t *data = plat_file_read(path, &size);
if (!data) return 0;
uint8_t *wide = utf16_text(data, size);
if (wide) {
free(data);
data = wide, size = strlen((const char *)wide);
rt_log("cfg: %s is saved as UTF-16; read as that (the menu saves it as UTF-8)", path);
}
char *p = (char *)data;
if (size >= 3 && !memcmp(p, "\xEF\xBB\xBF", 3)) p += 3; // editors add a BOM
for (int line = 1; *p; line++) {
char *eol = strchr(p, '\n');
if (eol) *eol = 0;
char *s = trim(p);
char *eq = strchr(s, '=');
if (*s && *s != '#' && *s != ';' && *s != '[') {
if (!eq) rt_log("cfg: nx2navi.ini line %d: no '=' in '%s'", line, s);
else {
*eq = 0;
add(trim(s), trim(eq + 1), line);
}
}
if (!eol) break;
p = eol + 1;
}
free(data);
migrate();
return 1;
}
// ---- device profiles: defaults for a known machine, below the environment and nx2navi.ini and above the table, so any
// key the player sets wins and resetting a key in the menu returns to the profile's value. NX2NAVI_DEVICE_PROFILE = auto
// (default: the Steam Deck when the firmware says so), desktop (none) or deck.
//
// The Steam Deck (LCD Jupiter, OLED Galileo; 1280x800, 16:10, 4 Zen 2 cores, RDNA 2 with 8 CUs sharing 16 GB): the game
// at the screen's 1280x800 with its own 5/6 scene (the aspect patch gives the camera its 16:10, resolution.c, and the
// romfs-patches-1280x800 overlay the HUD's);
// fullscreen and vsync, as gamescope composes Game Mode; 40 fps, which divides 40 Hz (and 120 Hz on the OLED); the
// game's six virtual cores folded onto four, one per physical core (kernel.c cores_enabled); ASTC textures stored as
// BC3, as the automatic choice gives with 16 GB shared between the CPU and the GPU; and a spinning guest thread handed
// off after 30 us instead of 50 (kernel.c), with four cores to share.
// Starting points to replace with measured ones (docs/tester-guide.md, Steam Deck).
static const struct { const char *key, *value; } DECK[] = {
{"FULLSCREEN", "1"}, {"WINDOW_SIZE", "1280x800"}, {"OUTPUT_RES", "1280x800"}, {"RENDER_SCALE", "game"},
{"VK_PRESENT", "fifo"}, {"FPS_LIMIT", "40"}, {"CORES", "4"}, {"ASTC_BC", "1"}, {"SPIN_HANDOFF_US", "30"},
};
static int profile = -1; // 0 none, 1 Steam Deck
static int read_line(const char *path, char *out, size_t n) {
FILE *f = fopen(path, "r");
if (!f) return 0;
int ok = fgets(out, (int)n, f) != NULL;
fclose(f);
out[ok ? strcspn(out, "\r\n") : 0] = 0;
return ok;
}
// The Steam Deck: Valve's board, product Jupiter or Galileo (/sys/class/dmi/id); SteamDeck=1, which Steam sets on it.
static int on_steam_deck(void) {
const char *env = getenv("SteamDeck");
if (env && !strcmp(env, "1")) return 1;
char vendor[64], product[64];
return read_line("/sys/class/dmi/id/board_vendor", vendor, sizeof vendor) && !strcmp(vendor, "Valve") &&
read_line("/sys/class/dmi/id/product_name", product, sizeof product) &&
(!strcmp(product, "Jupiter") || !strcmp(product, "Galileo"));
}
static const char *raw_get(const char *name);
static int profile_of(void) {
int p = __atomic_load_n(&profile, __ATOMIC_ACQUIRE);
if (p >= 0) return p;
const char *set = raw_get(PREFIX "DEVICE_PROFILE");
if (set && !strcmp(set, "deck")) p = 1;
else if (set && *set && strcmp(set, "auto")) p = 0;
else p = on_steam_deck();
__atomic_store_n(&profile, p, __ATOMIC_RELEASE);
return p;
}
const char *cfg_device_profile(void) { return profile_of() ? "deck" : "desktop"; }
static const char *raw_get(const char *name) {
const char *e = getenv(name);
if (e || strncmp(name, PREFIX, PREFIX_LEN)) return e;
int n = __atomic_load_n(&n_entries, __ATOMIC_ACQUIRE);
for (int i = 0; i < n; i++)
if (!strcasecmp(entries[i].key, name + PREFIX_LEN)) return __atomic_load_n(&entries[i].value, __ATOMIC_ACQUIRE);
return NULL;
}
static const char *cfg_get_now(const char *name) {
const char *v = raw_get(name);
if (v || strncmp(name, PREFIX, PREFIX_LEN) || !profile_of()) return v;
for (size_t i = 0; i < sizeof DECK / sizeof *DECK; i++)
if (!strcasecmp(DECK[i].key, name + PREFIX_LEN)) return DECK[i].value;
return NULL;
}
// Whether name's value comes from the player (the environment or nx2navi.ini), not a profile or the table.
int cfg_is_set(const char *name) { return raw_get(name) != NULL; }
unsigned cfg_version(void) { return __atomic_load_n(&version, __ATOMIC_ACQUIRE); }
int cfg_setenv(const char *name, const char *value) {
int ok = plat_setenv(name, value);
__atomic_add_fetch(&version, 1, __ATOMIC_RELEASE);
return ok;
}
int cfg_from_env(const char *name) { return getenv(name) != NULL; }
void cfg_set(const char *name, const char *value) {
if (strncmp(name, PREFIX, PREFIX_LEN) || !value) return;
char key[64];
snprintf(key, sizeof key, "%s", name + PREFIX_LEN);
for (char *p = key; *p; p++) *p = (char)toupper((unsigned char)*p);
plat_mutex_lock(&set_lock);
int i = 0, n = n_entries;
while (i < n && strcmp(entries[i].key, key)) i++;
if (i < n) {
if (!entries[i].value || strcmp(entries[i].value, value)) {
__atomic_store_n(&entries[i].value, strdup(value), __ATOMIC_RELEASE); // the old string stays for readers
entries[i].dirty = 1;
}
entries[i].removed = 0; // a value set after cfg_reset replaces the line instead of deleting it
} else if (n < CFG_MAX_KEYS) {
entries[n] = (CfgEntry){strdup(key), strdup(value), 1, 0};
__atomic_store_n(&n_entries, n + 1, __ATOMIC_RELEASE);
}
__atomic_add_fetch(&version, 1, __ATOMIC_RELEASE);
plat_mutex_unlock(&set_lock);
}
int cfg_reset(const char *const *keys, int n) {
int done = 0;
plat_mutex_lock(&set_lock);
for (int k = 0; k < n; k++) {
char key[64], var[80];
snprintf(key, sizeof key, "%s", keys[k]);
const char *name = norm_key(key);
snprintf(var, sizeof var, PREFIX "%s", name);
if (getenv(var)) continue; // the environment wins; the file line stays
int i = 0;
while (i < n_entries && strcmp(entries[i].key, name)) i++;
if (i == n_entries) { // no value in memory ("key =" in the file): the line still has to go
if (i == CFG_MAX_KEYS) continue;
entries[i] = (CfgEntry){strdup(name), NULL, 0, 1};
__atomic_store_n(&n_entries, i + 1, __ATOMIC_RELEASE);
} else if (entries[i].value) {
__atomic_store_n(&entries[i].value, NULL, __ATOMIC_RELEASE); // the old string stays for readers
entries[i].dirty = 0;
entries[i].removed = 1; // cfg_save_to deletes the key's lines
done++;
} else {
entries[i].removed = 1;
}
}
if (done) __atomic_add_fetch(&version, 1, __ATOMIC_RELEASE);
plat_mutex_unlock(&set_lock);
return done;
}
int cfg_last_save_ok(void) { return __atomic_load_n(&save_ok, __ATOMIC_ACQUIRE); }
void cfg_each_active(void (*cb)(const char *key, const char *value, int from_env, void *ctx), void *ctx) {
int n = __atomic_load_n(&n_entries, __ATOMIC_ACQUIRE);
for (int i = 0; i < n; i++) {
const char *v = __atomic_load_n(&entries[i].value, __ATOMIC_ACQUIRE);
if (v) cb(entries[i].key, v, 0, ctx);
}
for (size_t i = 0; i < sizeof known / sizeof *known; i++) {
char var[80];
snprintf(var, sizeof var, PREFIX "%s", known[i]);
const char *e = getenv(var);
if (e) cb(known[i], e, 1, ctx);
}
}
const CfgMeta *cfg_meta(const char *key) {
char k[64];
snprintf(k, sizeof k, "%s", key);
const char *name = norm_key(k);
for (size_t i = 0; i < sizeof metas / sizeof *metas; i++)
if (!strcmp(metas[i].key, name)) return &metas[i];
return NULL;
}
const char *cfg_default(const char *key) {
char k[64];
snprintf(k, sizeof k, "%s", key);
const char *name = norm_key(k);
if (profile_of())
for (size_t i = 0; i < sizeof DECK / sizeof *DECK; i++)
if (!strcasecmp(DECK[i].key, name)) return DECK[i].value;
const CfgMeta *m = cfg_meta(key);
return m ? m->def : NULL;
}
const CfgMeta *cfg_meta_at(int i) { return i >= 0 && (size_t)i < sizeof metas / sizeof *metas ? &metas[i] : NULL; }
static const char *cfg_value_now(const char *name) {
const char *e = cfg_get_now(name);
if (e && *e) return e;
const CfgMeta *m = cfg_meta(name);
if (!m) rt_fatal("cfg: %s has no row in the settings table", name);
return m->def;
}
// Lookup memo. cfg_get reads the environment (getenv walks the whole block comparing names) and then the file's
// entries and the settings table by name, and several per-draw paths ask for live settings: on the replay thread those
// lookups were about a sixth of the samples in a play profile (ucrtbase's string routines). Each thread keeps the
// answers it got per name until the settings version changes (cfg_set, cfg_reset, cfg_load); values stay valid that
// long because a set keeps the old string for readers and a load bumps the version. NX2NAVI_CFG_MEMO=0 (environment
// only, read once) asks every time.
#define CFG_MEMO_N 256
typedef struct { unsigned ver; uint32_t h; uint8_t kind; char name[55]; const char *v; } CfgMemo;
static _Thread_local CfgMemo cfg_memo[CFG_MEMO_N];
static int cfg_memo_on = -1;
static const char *cfg_memo_get(const char *name, int kind) {
if (cfg_memo_on < 0) {
const char *e = getenv(PREFIX "CFG_MEMO");
cfg_memo_on = !(e && !strcmp(e, "0"));
}
size_t len = strlen(name);
if (!cfg_memo_on || len >= sizeof cfg_memo[0].name) return kind ? cfg_value_now(name) : cfg_get_now(name);
uint32_t h = 2166136261u;
for (size_t i = 0; i < len; i++) h = (h ^ (uint8_t)name[i]) * 16777619u;
h = h * 2 + (uint32_t)kind;
CfgMemo *m = &cfg_memo[h % CFG_MEMO_N];
unsigned ver = __atomic_load_n(&version, __ATOMIC_ACQUIRE) + 1; // 0 marks an empty slot
if (m->ver == ver && m->h == h && m->kind == kind && !memcmp(m->name, name, len + 1)) return m->v;
const char *v = kind ? cfg_value_now(name) : cfg_get_now(name); // read after ver: a change meanwhile misses next time
m->ver = ver, m->h = h, m->kind = (uint8_t)kind, m->v = v;
memcpy(m->name, name, len + 1);
return v;
}
const char *cfg_get(const char *name) { return cfg_memo_get(name, 0); }
const char *cfg_value(const char *name) { return cfg_memo_get(name, 1); }
// The row's default as a number, for a set value that does not parse.
static double default_number(const char *name) {
return strtod(cfg_meta(name)->def, NULL);
}
double cfg_double(const char *name) {
const char *v = cfg_value(name);
char *end;
double d = strtod(v, &end);
return end == v || *end || d != d ? default_number(name) : d;
}
int cfg_int(const char *name) {
const char *v = cfg_value(name);
char *end;
long l = strtol(v, &end, 10);
return end == v || *end ? (int)default_number(name) : (int)l;
}
int cfg_bool(const char *name) { return strcmp(cfg_value(name), "0") != 0; }
// ---- the restart-only settings' values at start (cfg_init), which the running game keeps using whatever the menu sets
// later: cfg_pending compares against them, so the menu says "after restart" only while a restart would change
// something. One per row of metas, NULL for a live one.
static const char *at_start[sizeof metas / sizeof *metas];
static const char *meta_value(size_t i) {
char name[80];
snprintf(name, sizeof name, PREFIX "%s", metas[i].key);
return cfg_value(name);
}
static void start_values(void) {
for (size_t i = 0; i < sizeof metas / sizeof *metas; i++)
if (!metas[i].live) at_start[i] = strdup(meta_value(i)); // a copy: cfg_load (the probes) frees what it read
}
// A value the environment sets never waits: the menu cannot change it and a restart keeps the environment. The command
// line's --monitor and --audio-device arrive that way after the start values are taken (main.c).
static int pending_at(size_t i) {
char name[80];
if (!at_start[i]) return 0;
snprintf(name, sizeof name, PREFIX "%s", metas[i].key);
return !cfg_from_env(name) && strcmp(at_start[i], cfg_value(name)) != 0;
}
int cfg_pending(const char *key) {
const CfgMeta *m = cfg_meta(key);
return m ? pending_at((size_t)(m - metas)) : 0;
}
int cfg_pending_count(void) {
int n = 0;
for (size_t i = 0; i < sizeof metas / sizeof *metas; i++) n += pending_at(i);
return n;
}
// ---- cfg_save: the file as lines, each with its line ending
typedef struct { const char *s; size_t n; } Line; // n includes the '\n' (and '\r') when present
static int line_count(const char *p, size_t size) {
int n = 0;
for (size_t i = 0; i < size; i++) n += p[i] == '\n';
return n + 1;
}
// The line's text without its ending, BOM and surrounding blanks, into out.
static void line_text(const Line *l, int first, char *out, size_t cap) {
size_t n = l->n;
const char *s = l->s;
if (first && n >= 3 && !memcmp(s, "\xEF\xBB\xBF", 3)) s += 3, n -= 3;
while (n && (s[n - 1] == '\n' || s[n - 1] == '\r')) n--;
if (n >= cap) n = cap - 1;
memcpy(out, s, n);
out[n] = 0;
char *t = trim(out);
memmove(out, t, strlen(t) + 1);
}
// The key of a "key = value" line (comment = 0) or of a commented "# key = value" line (comment = 1), normalised,
// into key; 0 when the line is not one.
static int line_key(const char *text, int comment, char *key, size_t cap) {
if (comment) {
if (*text != '#' && *text != ';') return 0;
text++;
while (*text == ' ' || *text == '\t') text++;
}
if (!*text || *text == '#' || *text == ';' || *text == '[') return 0;
const char *eq = strchr(text, '=');
if (!eq) return 0;
size_t n = (size_t)(eq - text);
while (n && (text[n - 1] == ' ' || text[n - 1] == '\t')) n--;
if (!n || n >= cap) return 0;
for (size_t i = 0; i < n; i++)
if (!isalnum((unsigned char)text[i]) && text[i] != '_') return 0;
char tmp[128];
memcpy(tmp, text, n);
tmp[n] = 0;
snprintf(key, cap, "%s", norm_key(tmp));
return 1;
}
// The section name of a "[name]" line, lower-case, into out; 0 when the line is not one.
static int line_section(const char *text, char *out, size_t cap) {
if (*text != '[') return 0;
const char *e = strchr(text, ']');
if (!e) return 0;
char tmp[128];
size_t n = (size_t)(e - text - 1);
if (n >= sizeof tmp) n = sizeof tmp - 1;
memcpy(tmp, text + 1, n);
tmp[n] = 0;
snprintf(out, cap, "%s", trim(tmp));
for (char *p = out; *p; p++) *p = (char)tolower((unsigned char)*p);
return 1;
}
typedef struct { char *buf; size_t n, cap; } Out;
static void put(Out *o, const char *s, size_t n) {
if (o->n + n + 1 > o->cap) {
o->cap = (o->n + n + 1) * 2;
o->buf = realloc(o->buf, o->cap);
if (!o->buf) rt_fatal("cfg: out of memory writing nx2navi.ini");
}
memcpy(o->buf + o->n, s, n);
o->n += n;
}
static void puts_(Out *o, const char *s) { put(o, s, strlen(s)); }
static const char *section_of(const char *key) {
for (size_t i = 0; i < sizeof sections / sizeof *sections; i++)
if (!strcmp(sections[i].key, key)) return sections[i].section;
if (!strncmp(key, "CHEAT_", 6)) return "cheats"; // cheats.c: one key per cheat of the cheat file
return NULL;
}
// A value as cfg_load reads it back: quoted when it starts or ends with a blank (cfg_load trims those) or is itself
// quoted (cfg_load takes one pair of quotes off). A mod's folder name in mods_order can start with a space.
static void put_value(Out *o, const char *v) {
size_t n = strlen(v);
int quote = n && (v[0] == ' ' || v[0] == '\t' || v[n - 1] == ' ' || v[n - 1] == '\t' ||
(n >= 2 && v[0] == '"' && v[n - 1] == '"'));
if (quote) puts_(o, "\"");
puts_(o, v);
if (quote) puts_(o, "\"");
}
// "key = value" + eol for entry e (key lower-case)
static void put_entry(Out *o, const CfgEntry *e, const char *eol) {
char k[64];
snprintf(k, sizeof k, "%s", e->key);
for (char *p = k; *p; p++) *p = (char)tolower((unsigned char)*p);
puts_(o, k);
puts_(o, " = ");
put_value(o, e->value);
puts_(o, eol);
}
int cfg_save_to(const char *path) {
plat_mutex_lock(&set_lock);
int n = n_entries, any = 0;
for (int i = 0; i < n; i++) any |= entries[i].dirty | entries[i].removed;
if (!any) {
__atomic_store_n(&save_ok, 1, __ATOMIC_RELEASE);
plat_mutex_unlock(&set_lock);
return 1;
}
uint64_t size = 0;
uint8_t *data = plat_file_read(path, &size);
if (!data && plat_file_exists(path) && plat_file_size(path) != 0) {
// the file is there but unreadable (locked, transient error): rebuilding it from nothing would lose its lines
rt_log("cfg: cannot read %s, nothing written", path);
__atomic_store_n(&save_ok, 0, __ATOMIC_RELEASE);
plat_mutex_unlock(&set_lock);
return 0;
}
const char *text = data ? (const char *)data : "";
int nl = data ? line_count(text, size) : 0;
Line *lines = calloc((size_t)nl + 1, sizeof *lines);
// after[i]: entries to write after line i (-1 = none); replace[i]: the entry whose value line i now carries
int *replace = malloc(sizeof(int) * ((size_t)nl + 1)), *after_key = malloc(sizeof(int) * (size_t)(n + 1));
char *drop = calloc((size_t)nl + 1, 1); // lines of a reset key
if (!lines || !replace || !after_key || !drop) rt_fatal("cfg: out of memory writing nx2navi.ini");
for (int i = 0, at = 0; i < nl; i++) {
size_t start = (size_t)at;
while ((uint64_t)at < size && text[at] != '\n') at++;
if ((uint64_t)at < size) at++;
lines[i] = (Line){text + start, (size_t)at - start};
replace[i] = -1;
}
if (nl && !lines[nl - 1].n) nl--; // the text ended with a newline: no last empty line
const char *eol = data && strstr(text, "\r\n") ? "\r\n" : "\n";
char t[1024], k[128], sec[128];
for (int e = 0; e < n; e++) {
after_key[e] = -2; // -2 clean, -1 append in a new section at the end, >= 0 insert after that line
if (entries[e].removed)
for (int i = 0; i < nl; i++) {
line_text(&lines[i], i == 0, t, sizeof t);
if (line_key(t, 0, k, sizeof k) && !strcmp(k, entries[e].key)) drop[i] = 1;
}
if (!entries[e].dirty) continue;
int last = -1;
for (int i = 0; i < nl; i++) {
line_text(&lines[i], i == 0, t, sizeof t);
if (line_key(t, 0, k, sizeof k) && !strcmp(k, entries[e].key)) last = i;
}
if (last >= 0) {
replace[last] = e;
continue;
}
const char *want = section_of(entries[e].key);
int in = 0, example = -1, tail = -1;
for (int i = 0; i < nl && want; i++) {
line_text(&lines[i], i == 0, t, sizeof t);
if (line_section(t, sec, sizeof sec)) {
in = !strcmp(sec, want);
if (in) tail = i;
continue;
}
if (!in) continue;
if (*t) tail = i;
if (line_key(t, 1, k, sizeof k) && !strcmp(k, entries[e].key)) example = i;
}
after_key[e] = example >= 0 ? example : tail;
}
Out o = {0};
for (int i = 0; i < nl; i++) {
if (drop[i]) {
// the line leaves the file; keys inserted after it still need a line ending before them
} else if (replace[i] >= 0) {
// keep the line's indentation and key spelling, put the new value after " = "
const char *s = lines[i].s;
size_t len = lines[i].n;
if (i == 0 && len >= 3 && !memcmp(s, "\xEF\xBB\xBF", 3)) put(&o, s, 3), s += 3, len -= 3;
const char *eq = memchr(s, '=', len);
size_t kn = (size_t)(eq - s);
while (kn && (s[kn - 1] == ' ' || s[kn - 1] == '\t')) kn--;
put(&o, s, kn);
puts_(&o, " = ");
put_value(&o, entries[replace[i]].value);
int had_eol = len && s[len - 1] == '\n';
if (had_eol) puts_(&o, eol);
} else {
put(&o, lines[i].s, lines[i].n);
}
for (int e = 0; e < n; e++)
if (after_key[e] == i) {
if (o.n && o.buf[o.n - 1] != '\n') puts_(&o, eol);
put_entry(&o, &entries[e], eol);
}
}
// keys whose section the file lacks: one new section each, at the end
for (int e = 0; e < n; e++) {
if (after_key[e] != -1) continue;
const char *want = section_of(entries[e].key);
if (o.n && o.buf[o.n - 1] != '\n') puts_(&o, eol);
if (want) {
if (o.n) puts_(&o, eol);
puts_(&o, "[");
puts_(&o, want);
puts_(&o, "]");
puts_(&o, eol);
}
put_entry(&o, &entries[e], eol);
// the following keys of the same new section go right after this one
for (int f = e + 1; f < n && want; f++)
if (after_key[f] == -1 && section_of(entries[f].key) && !strcmp(section_of(entries[f].key), want)) {
put_entry(&o, &entries[f], eol);
after_key[f] = -3;
}
}
int ok = plat_file_write_atomic(path, o.buf ? o.buf : "", o.n);
if (ok)
for (int e = 0; e < n; e++) entries[e].dirty = entries[e].removed = 0;
else
rt_log("cfg: cannot write %s", path);
__atomic_store_n(&save_ok, ok ? 1 : 0, __ATOMIC_RELEASE);
free(o.buf);
free(drop);
free(after_key);
free(replace);
free(lines);
free(data);
plat_mutex_unlock(&set_lock);
return ok;
}
static char ini_path[1024];
static int find_ini(void) {
if (ini_path[0]) return 1;
char path[1024];
if (!plat_exe_path(path, sizeof path)) return 0;
char *cut = plat_last_sep(path);
if (!cut) cut = strrchr(path, '/');
if (!cut || cut + 12 >= path + sizeof path) return 0; // room for "nx2navi.ini" and its NUL after the separator
strcpy(cut + 1, "nx2navi.ini");
snprintf(ini_path, sizeof ini_path, "%s", path);
return 1;
}
int cfg_save(void) {
if (find_ini()) return cfg_save_to(ini_path);
__atomic_store_n(&save_ok, 0, __ATOMIC_RELEASE);
return 0;
}
static void load_ini(void) {
if (!find_ini()) return;
if (!cfg_load(ini_path)) {
rt_log("cfg: no settings file at %s", ini_path);
return;
}
rt_log("cfg: read %s: %d keys", ini_path, n_entries);
for (int i = 0; i < n_entries; i++) {
char var[128];
snprintf(var, sizeof var, PREFIX "%s", entries[i].key);
if (getenv(var)) rt_log("cfg: %s is set in the environment and overrides nx2navi.ini", var);
}
}
void cfg_init(void) {
load_ini();
if (profile_of())
rt_log("cfg: device profile Steam Deck: defaults for the keys nx2navi.ini does not set (NX2NAVI_DEVICE_PROFILE=desktop "
"turns it off)");
start_values();
}
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