fix(doom): Ensure doom hud fully redraws after pause

components/doom/prboom/r_main.c

@@ -367,6 +367,18 @@ void R_SetViewSize(int blocks)
   setblocks = blocks;
 }
 
+// Force a full screen redraw on the next D_Display, reusing the current view
+// size. D_Display's setsizeneeded path sets oldgamestate = -1, which triggers
+// R_FillBackScreen + a border redraw and (in status-bar mode) ST_doRefresh --
+// a FULL status bar repaint instead of the usual ST_diffDraw. Call this after
+// something external overwrites the framebuffer (e.g. returning from the
+// emulator's pause/state menu); otherwise the diff-optimized status bar stays
+// garbage until an individual widget value (ammo/health) happens to change.
+void R_ForceRedraw(void)
+{
+  setsizeneeded = true;
+}
+
 //
 // R_ExecuteSetViewSize
 //

components/doom/prboom/r_main.h

@@ -116,6 +116,7 @@ void R_RenderPlayerView(player_t *player);   // Called by G_Drawer.
 void R_Init(void);                           // Called by startup code.
 void R_SetViewSize(int blocks);              // Called by M_Responder.
 void R_ExecuteSetViewSize(void);             // cph - called by D_Display to complete a view resize
+void R_ForceRedraw(void);                    // force a full redraw next D_Display (e.g. after an external menu)
 
 //
 // HAPTICS - functions to call for various events that should trigger haptics

components/doom/src/doom.cpp

@@ -69,6 +69,7 @@ extern "C" {
 #include <m_misc.h>
 #include <r_draw.h>
 #include <r_fps.h>
+#include <r_main.h>
 #include <s_sound.h>
 #include <st_stuff.h>
 #include <mus2mid.h>
@@ -614,6 +615,12 @@ void pause_doom_tasks() {
 void resume_doom_tasks() {
     snd_MusicVolume = DEFAULT_AUDIO_VOLUME;
     snd_SfxVolume = DEFAULT_AUDIO_VOLUME;
+    // The pause/state menu (and clear_screen) overwrote the shared framebuffer,
+    // including the status bar region. Doom's status bar uses an incremental
+    // (diff) draw that assumes that region persists, so without a forced full
+    // redraw the HUD stays garbage until an individual widget value changes.
+    // Force a full redraw (background + border + ST_doRefresh) on the next frame.
+    R_ForceRedraw();
 }
 
 void load_doom(std::string_view save_path, int save_slot) {