update overlay ui

runtime/include/host_keymap.h

@@ -1,6 +1,7 @@
 #ifndef PSX_HOST_KEYMAP_H
 #define PSX_HOST_KEYMAP_H
 
+#include <stddef.h>
 #include <stdint.h>
 
 #ifdef __cplusplus
@@ -26,6 +27,10 @@ void host_keymap_load(const char *config_ini_path);
 /* 1 if (keycode, mod) matches a binding for `action`. */
 int host_keymap_match(HostKeymapAction action, int keycode, int mod);
 
+/* Format the primary bind for `action` into out (e.g. "F8", "Ctrl+R").
+ * Returns out, or "F8" / "" on empty action. Always NUL-terminates. */
+const char *host_keymap_label(HostKeymapAction action, char *out, size_t cap);
+
 #ifdef __cplusplus
 }
 #endif

runtime/src/host_keymap.c

@@ -197,3 +197,34 @@ int host_keymap_match(HostKeymapAction action, int keycode, int mod) {
     }
     return 0;
 }
+
+const char *host_keymap_label(HostKeymapAction action, char *out, size_t cap) {
+    const HostKeyAction *a;
+    const HostKeyBind *b;
+    const char *keyname;
+    size_t n = 0;
+    if (!out || cap == 0) return "";
+    out[0] = 0;
+    if (action < 0 || action >= HOST_KEYMAP_ACTION_COUNT) return out;
+    a = &s_actions[action];
+    if (a->count <= 0) {
+        if (action == HOST_KEYMAP_REWIND)
+            snprintf(out, cap, "F8");
+        return out;
+    }
+    b = &a->binds[0];
+    if (b->mods & KMOD_CTRL) {
+        n += (size_t)snprintf(out + n, cap > n ? cap - n : 0, "Ctrl+");
+    }
+    if (b->mods & KMOD_ALT) {
+        n += (size_t)snprintf(out + n, cap > n ? cap - n : 0, "Alt+");
+    }
+    if (b->mods & KMOD_SHIFT) {
+        n += (size_t)snprintf(out + n, cap > n ? cap - n : 0, "Shift+");
+    }
+    keyname = SDL_GetKeyName((SDL_Keycode)b->keycode);
+    if (!keyname || !keyname[0])
+        keyname = "?";
+    snprintf(out + n, cap > n ? cap - n : 0, "%s", keyname);
+    return out;
+}

runtime/src/psx_rewind.c

@@ -5,6 +5,7 @@
 #include "boot_state.h"
 #include "cdrom.h"
 #include "gpu.h"
+#include "host_keymap.h"
 #include "host_osd.h"
 #include "interrupts.h"
 #include "mdec.h"
@@ -745,7 +746,8 @@ static void rasterize_panel(void)
     uint32_t *d = s_panel;
     int i, n, card_w, card_h, gap, x, y, sel_w, sel_h;
     int center_x, origin;
-    char buf[64];
+    char buf[96];
+    char hk[32];
 
     for (i = 0; i < RW_PANEL_W * RW_PANEL_H; i++)
         d[i] = 0xE0101218u;
@@ -759,8 +761,11 @@ static void rasterize_panel(void)
     } else {
         draw_text(d, RW_PANEL_W, 120, 8, "NO SNAPSHOTS YET", 0xFF888888u);
     }
-    draw_text(d, RW_PANEL_W, 12, RW_PANEL_H - 16,
-              "LEFT/RIGHT  A LOAD  B CLOSE  F8", 0xFFAAAAAAu);
+    host_keymap_label(HOST_KEYMAP_REWIND, hk, sizeof(hk));
+    /* Overlay font is uppercase-only; keep PS labels dual for pad + KB users. */
+    snprintf(buf, sizeof(buf),
+             "LEFT/RIGHT  A / CROSS LOAD  B / CIRCLE CLOSE  %s", hk);
+    draw_text(d, RW_PANEL_W, 12, RW_PANEL_H - 16, buf, 0xFFAAAAAAu);
 
     n = (int)s_count;
     if (n <= 0) {