From cd5c3741630632cd89f9970e3344c474a165eefd Mon Sep 17 00:00:00 2001
From: obesecatlord <henryrwilliams@protonmail.com>
Date: Sun, 10 May 2026 23:00:19 -0500
Subject: [PATCH] Expose VR options menu

---
 src/info/menus.h |  1 +
 src/m_menu.c     | 82 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 83 insertions(+)

diff --git a/src/info/menus.h b/src/info/menus.h
index 3c7fe711f..1e12bc2d7 100644
--- a/src/info/menus.h
+++ b/src/info/menus.h
@@ -31,6 +31,7 @@ _(OP_VIDEOMODE)
 _(OP_VISUAL)
 _(OP_VIDCOLORPROFILE)
 _(OP_OPENGL)
+_(OP_VR)
 
 _(OP_SOUND)
 _(SR_SOUNDTEST)
diff --git a/src/m_menu.c b/src/m_menu.c
index 371c5b26b..e12da8128 100644
--- a/src/m_menu.c
+++ b/src/m_menu.c
@@ -66,6 +66,7 @@
 #include "byteptr.h"
 #include "st_stuff.h"
 #include "i_sound.h"
+#include "dehacked.h"
 #include "k_hud.h" // SRB2kart
 #include "k_kart.h"
 #include "k_items.h" // KartItemCVars
@@ -671,6 +672,82 @@ INT32 MR_OpenGLOptionsMenu(INT32 choice)
 
 	return true;
 }
+
+static menuitem_t *M_EnsureMenuItem(menutype_t menutype, const char *name)
+{
+	menu_t *menu = &menudefs[menutype];
+	menuitem_t *item = M_CheckMenuItem(menutype, name);
+
+	if (item)
+		return item;
+
+	menu->menuitems = Z_Realloc(menu->menuitems, sizeof(menuitem_t)*(menu->numitems + 1), PU_STATIC, NULL);
+	item = &menu->menuitems[menu->numitems++];
+	memset(item, 0, sizeof(*item));
+	DEH_Link(name, &item->info, &menunames);
+	return item;
+}
+
+static void M_SetMenuItemText(menuitem_t *item, const char *text)
+{
+	if (item->text)
+		Z_Free(item->text);
+	item->text = Z_StrDup(text);
+}
+
+static void M_SetVRMenuCvarItem(const char *name, const char *text, consvar_t *cvar)
+{
+	menuitem_t *item = M_EnsureMenuItem(MN_OP_VR, name);
+
+	M_SetMenuItemText(item, text);
+	item->status = IT_INTERACT;
+	item->cvar = cvar;
+	item->routine = NULL;
+	item->submenu = MN_NONE;
+	item->argument = 0;
+	item->x = 0;
+	item->y = 0;
+}
+
+static void M_AddDefaultVROptionsMenu(void)
+{
+	menu_t *video = &menudefs[MN_OP_VIDEO];
+	menu_t *source = menudefs[MN_OP_OPENGL].numitems ? &menudefs[MN_OP_OPENGL] : video;
+	menu_t *vr = &menudefs[MN_OP_VR];
+	menuitem_t *videoitem = M_EnsureMenuItem(MN_OP_VIDEO, "VR");
+
+	M_SetMenuItemText(videoitem, "VR Options...");
+	videoitem->status = IT_INTERACT;
+	videoitem->submenu = MN_OP_VR;
+	videoitem->cvar = NULL;
+	videoitem->routine = NULL;
+	videoitem->argument = 0;
+	videoitem->x = 0;
+	videoitem->y = 0;
+
+	vr->drawroutine = MD_DrawGenericMenu;
+	vr->x = source->x ? source->x : 72;
+	vr->y = source->y ? source->y : 36;
+	vr->scrollheight = source->scrollheight ? source->scrollheight : 128;
+	vr->cursoroffset = source->cursoroffset;
+	vr->lineheight = source->lineheight ? source->lineheight : 10;
+	vr->enterroutine = MR_OpenGLOptionsMenu;
+
+	M_SetVRMenuCvarItem("ENABLED", "Virtual Reality", &cv_vrenabled);
+	M_SetVRMenuCvarItem("RESOLUTION", "Resolution Scale", &cv_vrresolution);
+	M_SetVRMenuCvarItem("WORLDSCALE", "World Scale", &cv_vrscale);
+	M_SetVRMenuCvarItem("PLAYERSCALE", "Scale World With Player", &cv_vrplayerscale);
+	M_SetVRMenuCvarItem("UIDISTANCE", "UI Distance", &cv_vruidistance);
+	M_SetVRMenuCvarItem("UISCALE", "UI Scale", &cv_vruiscale);
+	M_SetVRMenuCvarItem("UIMODE", "UI Mode", &cv_vruimode);
+	M_SetVRMenuCvarItem("SPRITEROTATE", "Rotate Sprites With HMD", &cv_vrspriterotate);
+	M_SetVRMenuCvarItem("VIEWMODE", "Desktop Render Mode", &cv_vrviewmode);
+	M_SetVRMenuCvarItem("LOCKCAMERA", "Lock Camera Forward", &cv_glshearing);
+	M_SetVRMenuCvarItem("POSEMODE", "Pose Mode", &cv_vrposemode);
+	M_SetVRMenuCvarItem("SKYSTEREO", "Disable Skybox Stereoscopy", &cv_vrdisableskystereo);
+	M_SetVRMenuCvarItem("SKYBOXES", "Disable Skyboxes", &cv_vrcomfortmode);
+	M_SetVRMenuCvarItem("TRACKINTROS", "Track Intros", &cv_vrtrackintro);
+}
 #endif
 
 void M_UpdateNumServerPages(void)
@@ -2229,6 +2306,7 @@ void M_Ticker(void)
 	// Hide some options based on the current render mode
 #ifdef HWRENDER
 	M_SetItemVisible(MN_OP_VIDEO, "OPENGL", rendermode == render_opengl);
+	M_SetItemVisible(MN_OP_VIDEO, "VR", rendermode == render_opengl);
 #endif
 	//M_SetItemVisible(MN_OP_VIDEO, "PARALLEL", rendermode == render_soft);
 
@@ -2305,6 +2383,10 @@ void M_Init(void)
 	CV_RegisterVar(&cv_dummycolor);
 	CV_RegisterVar(&cv_dummyserverpage);
 
+#ifdef HWRENDER
+	M_AddDefaultVROptionsMenu();
+#endif
+
 	quitmsg[QUITMSG] = M_GetText("Eggman's tied explosives\nto your girlfriend, and\nwill activate them if\nyou press the 'Y' key!\nPress 'N' to save her!\n\n(Press 'Y' to quit)");
 	quitmsg[QUITMSG1] = M_GetText("What would Tails say if\nhe saw you quitting the game?\n\n(Press 'Y' to quit)");
 	quitmsg[QUITMSG2] = M_GetText("Hey!\nWhere do ya think you're goin'?\n\n(Press 'Y' to quit)");