diff --git a/src/d_main.cpp b/src/d_main.cpp
index f73049397..365b54938 100644
--- a/src/d_main.cpp
+++ b/src/d_main.cpp
@@ -2635,6 +2635,7 @@ void D_DoomMain (void)
 
 			V_Init2();
 			UpdateJoystickMenu(NULL);
+			UpdateVRModes();
 
 			v = Args->CheckValue ("-loadgame");
 			if (v)
diff --git a/src/g_cvars.cpp b/src/g_cvars.cpp
index 7aac035d0..560effae7 100644
--- a/src/g_cvars.cpp
+++ b/src/g_cvars.cpp
@@ -129,7 +129,7 @@ CUSTOM_CVAR(Float, teamdamage, 0.f, CVAR_SERVERINFO | CVAR_NOINITCALL)
 	}
 }
 
-CUSTOM_CVAR(String, language, "auto", CVAR_ARCHIVE | CVAR_NOINITCALL)
+CUSTOM_CVAR(String, language, "auto", CVAR_ARCHIVE | CVAR_NOINITCALL | CVAR_GLOBALCONFIG)
 {
 	SetLanguageIDs();
 	GStrings.UpdateLanguage();
diff --git a/src/g_game.cpp b/src/g_game.cpp
index 861b506a8..32563b9c9 100644
--- a/src/g_game.cpp
+++ b/src/g_game.cpp
@@ -108,6 +108,7 @@ CVAR (Bool, storesavepic, true, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
 CVAR (Bool, longsavemessages, true, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
 CVAR (String, save_dir, "", CVAR_ARCHIVE|CVAR_GLOBALCONFIG);
 CVAR (Bool, cl_waitforsave, true, CVAR_ARCHIVE | CVAR_GLOBALCONFIG);
+CVAR (Bool, enablescriptscreenshot, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG);
 EXTERN_CVAR (Float, con_midtime);
 
 //==========================================================================
@@ -1715,7 +1716,7 @@ void G_DoPlayerPop(int playernum)
 	players[playernum].DestroyPSprites();
 }
 
-void G_ScreenShot (char *filename)
+void G_ScreenShot (const char *filename)
 {
 	shotfile = filename;
 	gameaction = ga_screenshot;
@@ -2876,6 +2877,26 @@ DEFINE_ACTION_FUNCTION(FLevelLocals, StartSlideshow)
 	return 0;
 }
 
+DEFINE_ACTION_FUNCTION(FLevelLocals, MakeScreenShot)
+{
+	if (enablescriptscreenshot)
+	{
+		G_ScreenShot("");
+	}
+	return 0;
+}
+
+void G_MakeAutoSave()
+{
+	gameaction = ga_autosave;
+}
+
+DEFINE_ACTION_FUNCTION(FLevelLocals, MakeAutoSave)
+{
+	G_MakeAutoSave();
+	return 0;
+}
+
 DEFINE_GLOBAL(players)
 DEFINE_GLOBAL(playeringame)
 DEFINE_GLOBAL(PlayerClasses)
diff --git a/src/g_game.h b/src/g_game.h
index a21c80cc6..baedc0627 100644
--- a/src/g_game.h
+++ b/src/g_game.h
@@ -95,7 +95,7 @@ bool G_CheckDemoStatus (void);
 void G_Ticker (void);
 bool G_Responder (event_t*	ev);
 
-void G_ScreenShot (char *filename);
+void G_ScreenShot (const char* filename);
 void G_StartSlideshow(FLevelLocals *Level, FName whichone);
 
 FString G_BuildSaveName (const char *prefix, int slot);
diff --git a/src/gamedata/fonts/font.cpp b/src/gamedata/fonts/font.cpp
index 92ebb03ed..195195316 100644
--- a/src/gamedata/fonts/font.cpp
+++ b/src/gamedata/fonts/font.cpp
@@ -751,12 +751,24 @@ int FFont::GetCharCode(int code, bool needpic) const
 			}
 		}
 
+		code = originalcode;
 		if (myislower(code))
 		{
 			int upper = upperforlower[code];
 			// Stripping accents did not help - now try uppercase for lowercase
 			if (upper != code) return GetCharCode(upper, needpic);
 		}
+
+		// Same for the uppercase character. Since we restart at the accented version this must go through the entire thing again.
+		while ((newcode = stripaccent(code)) != code)
+		{
+			code = newcode;
+			if (code >= FirstChar && code <= LastChar && (!needpic || Chars[code - FirstChar].TranslatedPic != nullptr))
+			{
+				return code;
+			}
+		}
+
 	}
 
 	return -1;
diff --git a/src/gamedata/fonts/v_font.cpp b/src/gamedata/fonts/v_font.cpp
index 9218c5d19..bd88bf48f 100644
--- a/src/gamedata/fonts/v_font.cpp
+++ b/src/gamedata/fonts/v_font.cpp
@@ -838,8 +838,17 @@ int stripaccent(int code)
 	}
 	else if (code >= 0x100 && code < 0x180)
 	{
-		static const char accentless[] = "AaAaAaCcCcCcCcDdDdEeEeEeEeEeGgGgGgGgHhHhIiIiIiIiIiIiJjKkkLlLlLlLlLlNnNnNnnNnOoOoOoOoRrRrRrSsSsSsSsTtTtTtUuUuUuUuUuUuWwYyYZzZzZz ";
-		return accentless[code -0x100];
+		// For the double-accented Hungarian letters it makes more sense to first map them to the very similar looking Umlauts.
+		// (And screw the crappy specs here that do not allow UTF-8 multibyte characters here.)
+		if (code == 0x150) code = 0xd6;
+		else if (code == 0x151) code = 0xf6;
+		else if (code == 0x170) code = 0xdc;
+		else if (code == 0x171) code = 0xfc;
+		else
+		{
+			static const char accentless[] = "AaAaAaCcCcCcCcDdDdEeEeEeEeEeGgGgGgGgHhHhIiIiIiIiIiIiJjKkkLlLlLlLlLlNnNnNnnNnOoOoOoOoRrRrRrSsSsSsSsTtTtTtUuUuUuUuUuUuWwYyYZzZzZz ";
+			return accentless[code - 0x100];
+		}
 	}
 	else if (code >= 0x200 && code < 0x21c)
 	{
diff --git a/src/gamedata/resourcefiles/file_wad.cpp b/src/gamedata/resourcefiles/file_wad.cpp
index f34138e62..d3aab7d5e 100644
--- a/src/gamedata/resourcefiles/file_wad.cpp
+++ b/src/gamedata/resourcefiles/file_wad.cpp
@@ -33,6 +33,7 @@
 **
 */
 
+#include <ctype.h>
 #include "resourcefile.h"
 #include "v_text.h"
 #include "w_wad.h"
diff --git a/src/gamedata/stringtable.cpp b/src/gamedata/stringtable.cpp
index a892992e1..8d3344a0e 100644
--- a/src/gamedata/stringtable.cpp
+++ b/src/gamedata/stringtable.cpp
@@ -354,7 +354,7 @@ void FStringTable::InsertString(int langid, FName label, const FString &string)
 			Printf("Bad macro in %s : %s\n", strlangid, label.GetChars());
 			break;
 		}
-		FString macroname(string.GetChars() + index + 2, endindex - index - 2);
+		FString macroname(te.strings[0].GetChars() + index + 2, endindex - index - 2);
  		FStringf lookupstr("%s/%s", strlangid, macroname.GetChars());
 		FStringf replacee("@[%s]", macroname.GetChars());
 		FName lookupname(lookupstr, true);
diff --git a/src/intermission/intermission_parse.cpp b/src/intermission/intermission_parse.cpp
index bc1ccb7ba..5c4e0cedc 100644
--- a/src/intermission/intermission_parse.cpp
+++ b/src/intermission/intermission_parse.cpp
@@ -34,6 +34,7 @@
 */
 
 
+#include <ctype.h>
 #include "intermission/intermission.h"
 #include "g_level.h"
 #include "w_wad.h"
diff --git a/src/menu/menu.h b/src/menu/menu.h
index 43a96f812..c2c54862a 100644
--- a/src/menu/menu.h
+++ b/src/menu/menu.h
@@ -363,4 +363,6 @@ DMenuItemBase * CreateListMenuItemPatch(double x, double y, int height, int hotk
 DMenuItemBase * CreateListMenuItemText(double x, double y, int height, int hotkey, const char *text, FFont *font, PalEntry color1, PalEntry color2, FName command, int param);
 DMenuItemBase * CreateOptionMenuItemCommand(const char *label, FName cmd, bool centered = false);
 
+void UpdateVRModes(bool considerQuadBuffered=true);
+
 #endif
diff --git a/src/menu/menudef.cpp b/src/menu/menudef.cpp
index e3df4fbf0..a0113de27 100644
--- a/src/menu/menudef.cpp
+++ b/src/menu/menudef.cpp
@@ -1724,3 +1724,31 @@ fail:
 		}
 	}
 }
+
+
+#ifdef _WIN32
+EXTERN_CVAR(Bool, vr_enable_quadbuffered)
+#endif
+
+void UpdateVRModes(bool considerQuadBuffered)
+{
+	FOptionValues ** pVRModes = OptionValues.CheckKey("VRMode");
+	if (pVRModes == nullptr) return;
+
+	TArray<FOptionValues::Pair> & vals = (*pVRModes)->mValues;
+	TArray<FOptionValues::Pair> filteredValues;
+	int cnt = vals.Size();
+	for (int i = 0; i < cnt; ++i) {
+		auto const & mode = vals[i];
+		if (mode.Value == 7) {  // Quad-buffered stereo
+#ifdef _WIN32
+			if (!vr_enable_quadbuffered) continue;
+#else
+			continue;  // Remove quad-buffered option on Mac and Linux
+#endif
+			if (!considerQuadBuffered) continue;  // Probably no compatible screen mode was found
+		}
+		filteredValues.Push(mode);
+	}
+	vals = filteredValues;
+}
diff --git a/src/posix/cocoa/i_system.mm b/src/posix/cocoa/i_system.mm
index e40202fc3..8ef18d985 100644
--- a/src/posix/cocoa/i_system.mm
+++ b/src/posix/cocoa/i_system.mm
@@ -180,7 +180,7 @@ void I_Error (const char *error, ...)
 
 	va_start(argptr, error);
 
-	vsprintf (errortext, error, argptr);
+	myvsnprintf (errortext, MAX_ERRORTEXT, error, argptr);
 	va_end (argptr);
 	throw CRecoverableError(errortext);
 }
diff --git a/src/posix/sdl/i_system.cpp b/src/posix/sdl/i_system.cpp
index 9303fc6eb..a9c94ba1f 100644
--- a/src/posix/sdl/i_system.cpp
+++ b/src/posix/sdl/i_system.cpp
@@ -229,7 +229,7 @@ void I_Error (const char *error, ...)
 
 	va_start(argptr, error);
 
-	vsprintf (errortext, error, argptr);
+	myvsnprintf (errortext, MAX_ERRORTEXT, error, argptr);
 	va_end (argptr);
 	throw CRecoverableError(errortext);
 }
diff --git a/src/r_data/voxels.cpp b/src/r_data/voxels.cpp
index a9eb9eb68..8017f2c4d 100644
--- a/src/r_data/voxels.cpp
+++ b/src/r_data/voxels.cpp
@@ -35,6 +35,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <algorithm>
+#include <ctype.h>
 
 #include "m_swap.h"
 #include "m_argv.h"
diff --git a/src/rendering/gl/renderer/gl_postprocess.cpp b/src/rendering/gl/renderer/gl_postprocess.cpp
index 6b8c5c2e6..aa7d7cb19 100644
--- a/src/rendering/gl/renderer/gl_postprocess.cpp
+++ b/src/rendering/gl/renderer/gl_postprocess.cpp
@@ -121,20 +121,11 @@ void FGLRenderer::BlurScene(float gameinfobluramount)
 	mBuffers->UpdateEffectTextures();
 
 	auto vrmode = VRMode::GetVRMode(true);
-	if (vrmode->mEyeCount == 1)
+	int eyeCount = vrmode->mEyeCount;
+	for (int i = 0; i < eyeCount; ++i)
 	{
 		mBuffers->RenderEffect("BlurScene");
-	}
-	else
-	{
-		for (int eye_ix = 0; eye_ix < vrmode->mEyeCount; ++eye_ix)
-		{
-			FGLDebug::PushGroup("EyeBlur");
-			mBuffers->BlitFromEyeTexture(eye_ix);
-			mBuffers->RenderEffect("BlurScene");
-			mBuffers->BlitToEyeTexture(eye_ix);
-			FGLDebug::PopGroup();
-		}
+		if (eyeCount - i > 1) mBuffers->NextEye(eyeCount);
 	}
 }
 
@@ -159,13 +150,12 @@ void FGLRenderer::Flush()
 	else
 	{
 		// Render 2D to eye textures
-		for (int eye_ix = 0; eye_ix < vrmode->mEyeCount; ++eye_ix)
+		int eyeCount = vrmode->mEyeCount;
+		for (int eye_ix = 0; eye_ix < eyeCount; ++eye_ix)
 		{
-			FGLDebug::PushGroup("Eye2D");
-			mBuffers->BlitFromEyeTexture(eye_ix);
 			screen->Draw2D();
-			mBuffers->BlitToEyeTexture(eye_ix);
-			FGLDebug::PopGroup();
+			if (eyeCount - eye_ix > 1)
+				mBuffers->NextEye(eyeCount);
 		}
 		screen->Clear2D();
 
diff --git a/src/rendering/gl/renderer/gl_renderbuffers.cpp b/src/rendering/gl/renderer/gl_renderbuffers.cpp
index 4dd9f95be..73c33e961 100644
--- a/src/rendering/gl/renderer/gl_renderbuffers.cpp
+++ b/src/rendering/gl/renderer/gl_renderbuffers.cpp
@@ -532,7 +532,7 @@ void FGLRenderBuffers::BlitSceneToTexture()
 //
 //==========================================================================
 
-void FGLRenderBuffers::BlitToEyeTexture(int eye)
+void FGLRenderBuffers::BlitToEyeTexture(int eye, bool allowInvalidate)
 {
 	CreateEyeBuffers(eye);
 
@@ -540,7 +540,7 @@ void FGLRenderBuffers::BlitToEyeTexture(int eye)
 	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, mEyeFBs[eye].handle);
 	glBlitFramebuffer(0, 0, mWidth, mHeight, 0, 0, mWidth, mHeight, GL_COLOR_BUFFER_BIT, GL_NEAREST);
 
-	if ((gl.flags & RFL_INVALIDATE_BUFFER) != 0)
+	if ((gl.flags & RFL_INVALIDATE_BUFFER) != 0 && allowInvalidate)
 	{
 		GLenum attachments[2] = { GL_COLOR_ATTACHMENT0, GL_DEPTH_STENCIL_ATTACHMENT };
 		glInvalidateFramebuffer(GL_READ_FRAMEBUFFER, 2, attachments);
@@ -552,7 +552,7 @@ void FGLRenderBuffers::BlitToEyeTexture(int eye)
 
 void FGLRenderBuffers::BlitFromEyeTexture(int eye)
 {
-	CreateEyeBuffers(eye);
+	if (mEyeFBs.Size() <= unsigned(eye)) return;
 
 	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, mPipelineFB[mCurrentPipelineTexture].handle);
 	glBindFramebuffer(GL_READ_FRAMEBUFFER, mEyeFBs[eye].handle);
@@ -1002,4 +1002,17 @@ void FGLRenderBuffers::RenderEffect(const FString &name)
 	FGLDebug::PopGroup();
 }
 
-}
\ No newline at end of file
+
+// Store the current stereo 3D eye buffer, and Load the next one
+
+int FGLRenderBuffers::NextEye(int eyeCount)
+{
+	int nextEye = (mCurrentEye + 1) % eyeCount;
+	if (nextEye == mCurrentEye) return mCurrentEye;
+	BlitToEyeTexture(mCurrentEye);
+	mCurrentEye = nextEye;
+	BlitFromEyeTexture(mCurrentEye);
+	return mCurrentEye;
+}
+
+}  // namespace OpenGLRenderer
\ No newline at end of file
diff --git a/src/rendering/gl/renderer/gl_renderbuffers.h b/src/rendering/gl/renderer/gl_renderbuffers.h
index b4b018516..4b66e7569 100644
--- a/src/rendering/gl/renderer/gl_renderbuffers.h
+++ b/src/rendering/gl/renderer/gl_renderbuffers.h
@@ -87,9 +87,11 @@ public:
 
 	void BindOutputFB();
 
-	void BlitToEyeTexture(int eye);
+	void BlitToEyeTexture(int eye, bool allowInvalidate=true);
 	void BlitFromEyeTexture(int eye);
 	void BindEyeTexture(int eye, int texunit);
+	int NextEye(int eyeCount);
+	int & CurrentEye() { return mCurrentEye; }
 
 	void BindDitherTexture(int texunit);
 
@@ -156,6 +158,7 @@ private:
 	// Eye buffers
 	TArray<PPGLTexture> mEyeTextures;
 	TArray<PPGLFrameBuffer> mEyeFBs;
+	int mCurrentEye = 0;
 
 	// Shadow map texture
 	PPGLTexture mShadowMapTexture;
diff --git a/src/rendering/gl/renderer/gl_scene.cpp b/src/rendering/gl/renderer/gl_scene.cpp
index c62203be9..764355d00 100644
--- a/src/rendering/gl/renderer/gl_scene.cpp
+++ b/src/rendering/gl/renderer/gl_scene.cpp
@@ -163,9 +163,11 @@ sector_t * FGLRenderer::RenderViewpoint (FRenderViewpoint &mainvp, AActor * came
     // Render (potentially) multiple views for stereo 3d
 	// Fixme. The view offsetting should be done with a static table and not require setup of the entire render state for the mode.
 	auto vrmode = VRMode::GetVRMode(mainview && toscreen);
-	for (int eye_ix = 0; eye_ix < vrmode->mEyeCount; ++eye_ix)
+	const int eyeCount = vrmode->mEyeCount;
+	mBuffers->CurrentEye() = 0;  // always begin at zero, in case eye count changed
+	for (int eye_ix = 0; eye_ix < eyeCount; ++eye_ix)
 	{
-		const auto &eye = vrmode->mEyes[eye_ix];
+		const auto &eye = vrmode->mEyes[mBuffers->CurrentEye()];
 		screen->SetViewportRects(bounds);
 
 		if (mainview) // Bind the scene frame buffer and turn on draw buffers used by ssao
@@ -218,8 +220,8 @@ sector_t * FGLRenderer::RenderViewpoint (FRenderViewpoint &mainvp, AActor * came
 			PostProcess.Unclock();
 		}
 		di->EndDrawInfo();
-		if (vrmode->mEyeCount > 1)
-			mBuffers->BlitToEyeTexture(eye_ix);
+		if (eyeCount - eye_ix > 1)
+			mBuffers->NextEye(eyeCount);
 	}
 
 	return mainvp.sector;
diff --git a/src/rendering/gl/renderer/gl_stereo3d.cpp b/src/rendering/gl/renderer/gl_stereo3d.cpp
index 6baaa801f..08cb4fbef 100644
--- a/src/rendering/gl/renderer/gl_stereo3d.cpp
+++ b/src/rendering/gl/renderer/gl_stereo3d.cpp
@@ -34,6 +34,7 @@
 #include "gl/system/gl_framebuffer.h"
 #include "hwrenderer/postprocessing/hw_presentshader.h"
 #include "hwrenderer/postprocessing/hw_present3dRowshader.h"
+#include "menu/menu.h"
 
 EXTERN_CVAR(Int, vr_mode)
 EXTERN_CVAR(Float, vid_saturation)
@@ -283,6 +284,8 @@ bool FGLRenderer::QuadStereoCheckInitialRenderContextState()
 										   // Now check whether this context supports hardware stereo
 			glGetBooleanv(GL_STEREO, &supportsStereo);
 			bQuadStereoSupported = supportsStereo && supportsBuffered;
+			if (! bQuadStereoSupported)
+				UpdateVRModes(false);
 		}
 	}
 	return bQuadStereoSupported;
@@ -324,6 +327,12 @@ void FGLRenderer::PresentQuadStereo()
 
 void FGLRenderer::PresentStereo()
 {
+	auto vrmode = VRMode::GetVRMode(true);
+	const int eyeCount = vrmode->mEyeCount;
+	// Don't invalidate the bound framebuffer (..., false)
+	if (eyeCount > 1)
+		mBuffers->BlitToEyeTexture(mBuffers->CurrentEye(), false);
+
 	switch (vr_mode)
 	{
 	default:
diff --git a/src/sound/timidity/timidity.cpp b/src/sound/timidity/timidity.cpp
index b100a1e5d..22ec94d97 100644
--- a/src/sound/timidity/timidity.cpp
+++ b/src/sound/timidity/timidity.cpp
@@ -828,7 +828,7 @@ void cmsg(int type, int verbosity_level, const char *fmt, ...)
 	char buf[1024];
 	va_list args;
 	va_start(args, fmt);
-	vsprintf(buf, fmt, args);
+	myvsnprintf(buf, sizeof buf, fmt, args);
 	va_end(args);
 	I_DebugPrint(buf);
 #endif
diff --git a/src/v_video.h b/src/v_video.h
index b4ecdeb9c..b56c4e727 100644
--- a/src/v_video.h
+++ b/src/v_video.h
@@ -361,7 +361,6 @@ public:
 	float glslversion = 0;						// This is here so that the differences between old OpenGL and new OpenGL/Vulkan can be handled by platform independent code.
 	int instack[2] = { 0,0 };					// this is globally maintained state for portal recursion avoidance.
 	int stencilValue = 0;						// Global stencil test value
-	bool enable_quadbuffered = false;			// Quad-buffered stereo available?
 	unsigned int uniformblockalignment = 256;	// Hardware dependent uniform buffer alignment.
 	unsigned int maxuniformblock = 65536;
 	const char *gl_vendorstring;				// On OpenGL (not Vulkan) we have to account for some issues with Intel.
diff --git a/src/win32/gl_sysfb.cpp b/src/win32/gl_sysfb.cpp
index bc704bd69..3ac1d7cf7 100644
--- a/src/win32/gl_sysfb.cpp
+++ b/src/win32/gl_sysfb.cpp
@@ -56,14 +56,6 @@ extern HWND			Window;
 
 PFNWGLSWAPINTERVALEXTPROC myWglSwapIntervalExtProc;
 
-// For broadest GL compatibility, require user to explicitly enable quad-buffered stereo mode.
-// Setting vr_enable_quadbuffered_stereo does not automatically invoke quad-buffered stereo,
-// but makes it possible for subsequent "vr_mode 7" to invoke quad-buffered stereo
-CUSTOM_CVAR(Bool, vr_enable_quadbuffered, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG | CVAR_NOINITCALL)
-{
-	Printf("You must restart " GAMENAME " to switch quad stereo mode\n");
-}
-
 //==========================================================================
 //
 // Windows framebuffer
@@ -111,7 +103,6 @@ SystemGLFrameBuffer::SystemGLFrameBuffer(void *hMonitor, bool fullscreen) : Syst
 		}
 	}
 	ReleaseDC(Window, hDC);
-    enable_quadbuffered = vr_enable_quadbuffered;
 }
 
 //==========================================================================
diff --git a/src/win32/i_crash.cpp b/src/win32/i_crash.cpp
index 4918910ce..689e8a2b3 100644
--- a/src/win32/i_crash.cpp
+++ b/src/win32/i_crash.cpp
@@ -433,7 +433,7 @@ void Writef (HANDLE file, const char *format, ...)
 	DWORD len;
 
 	va_start (args, format);
-	len = vsprintf (buffer, format, args);
+	len = myvsnprintf (buffer, sizeof buffer, format, args);
 	va_end (args);
 	WriteFile (file, buffer, len, &len, NULL);
 }
diff --git a/src/win32/win32basevideo.cpp b/src/win32/win32basevideo.cpp
index 090b0bb1d..2d8ee7a2f 100644
--- a/src/win32/win32basevideo.cpp
+++ b/src/win32/win32basevideo.cpp
@@ -55,8 +55,6 @@
 
 CVAR(Int, vid_adapter, 1, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
 
-EXTERN_CVAR(Bool, vr_enable_quadbuffered)
-
 //==========================================================================
 //
 // 
diff --git a/src/win32/win32glvideo.cpp b/src/win32/win32glvideo.cpp
index 9104e546b..e283c700c 100644
--- a/src/win32/win32glvideo.cpp
+++ b/src/win32/win32glvideo.cpp
@@ -54,7 +54,6 @@
 #include "gl/system/gl_framebuffer.h"
 
 EXTERN_CVAR(Int, vid_adapter)
-EXTERN_CVAR(Bool, vr_enable_quadbuffered)
 EXTERN_CVAR(Bool, vid_hdr)
 
 CUSTOM_CVAR(Bool, gl_debug, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG | CVAR_NOINITCALL)
@@ -62,6 +61,14 @@ CUSTOM_CVAR(Bool, gl_debug, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG | CVAR_NOINI
 	Printf("This won't take effect until " GAMENAME " is restarted.\n");
 }
 
+// For broadest GL compatibility, require user to explicitly enable quad-buffered stereo mode.
+// Setting vr_enable_quadbuffered_stereo does not automatically invoke quad-buffered stereo,
+// but makes it possible for subsequent "vr_mode 7" to invoke quad-buffered stereo
+CUSTOM_CVAR(Bool, vr_enable_quadbuffered, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG | CVAR_NOINITCALL)
+{
+	Printf("You must restart " GAMENAME " to switch quad stereo mode\n");
+}
+
 extern bool vid_hdr_active;
 
 // these get used before GLEW is initialized so we have to use separate pointers with different names
diff --git a/wadsrc/static/fonts/consolefont/0400.png b/wadsrc/static/fonts/consolefont/0400.png
index d3f3786ee..a1f00c3d7 100644
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diff --git a/wadsrc/static/language.enu b/wadsrc/static/language.enu
index 0c76ada36..c9e7da9f1 100644
--- a/wadsrc/static/language.enu
+++ b/wadsrc/static/language.enu
@@ -1986,6 +1986,7 @@ MISCMNU_ALLCHEATS				= "Enable cheats from all games";
 MISCMNU_ENABLEAUTOSAVES			= "Enable autosaves";
 MISCMNU_AUTOSAVECOUNT			= "Number of autosaves";
 MISCMNU_SAVELOADCONFIRMATION  = "Save/Load confirmation";
+MISCMNU_ENABLESCRIPTSCREENSHOTS	= "Enable making screenshots by scripts";
 MISCMNU_DEHLOAD					= "Load *.deh/*.bex lumps";
 MISCMNU_CACHENODES				= "Cache nodes";
 MISCMNU_CACHETIME				= "Time threshold for node caching";
diff --git a/wadsrc/static/menudef.txt b/wadsrc/static/menudef.txt
index 7463f9d0f..403123db7 100644
--- a/wadsrc/static/menudef.txt
+++ b/wadsrc/static/menudef.txt
@@ -1131,6 +1131,7 @@ OptionMenu "MiscOptions" protected
 	Option "$MISCMNU_SAVELOADCONFIRMATION",			"saveloadconfirmation", "OnOff"
 	Slider "$MISCMNU_AUTOSAVECOUNT",			"autosavecount", 1, 20, 1, 0
 	Option "$MISCMNU_DEHLOAD",					"dehload", "dehopt"
+	Option "$MISCMNU_ENABLESCRIPTSCREENSHOTS",		"enablescriptscreenshot", "OnOff"
 	Option "$MISCMNU_INTERSCROLL",				"nointerscrollabort", "OffOn"
 	StaticText " "
 	Option "$MISCMNU_CACHENODES",				"gl_cachenodes", "OnOff"
@@ -1755,7 +1756,7 @@ OptionString SpeakerModes
 OptionString Resamplers
 {
 	"NoInterp",		"$OPTSTR_NOINTERPOLATION"
-	"Linear",		"$OPTVAL_LINEAR"
+	"Linear",		"$OPTVAL_LINEAR_1"
 	"Cubic",		"$OPTVAL_CUBIC"
 	"Spline",		"$OPTSTR_SPLINE"
 }
@@ -1893,7 +1894,7 @@ OptionValue ModReplayers
 OptionValue ModQuality
 {
 	0.0, "$OPTVAL_ALIASING"
-	1.0, "$OPTVAL_LINEAR"
+	1.0, "$OPTVAL_LINEAR_1"
 	2.0, "$OPTVAL_CUBIC"
 	3.0, "$OPTVAL_BLEP"		// Band-limited step
 	4.0, "$OPTVAL_LINEARSLOW"
@@ -2224,7 +2225,7 @@ OptionValue "FilterModes"
 	1, "$OPTVAL_NONENEARESTMIPMAP"
 	5, "$OPTVAL_NONELINEARMIPMAP"
 	6, "$OPTVAL_NONETRILINEAR"
-	2, "$OPTVAL_LINEAR"
+	2, "$OPTVAL_LINEAR_2"
 	3, "$OPTVAL_BILINEAR"
 	4, "$OPTVAL_TRILINEAR"
 }
@@ -2235,7 +2236,7 @@ OptionValue "TonemapModes"
 	1, "$OPTVAL_UNCHARTED2"
 	2, "$OPTVAL_HEJLDAWSON"
 	3, "$OPTVAL_REINHARD"
-	4, "$OPTVAL_LINEAR"
+	4, "$OPTVAL_LINEAR_3"
 	5, "$OPTVAL_PALETTE"
 }
 
diff --git a/wadsrc/static/zscript/actors/actor.zs b/wadsrc/static/zscript/actors/actor.zs
index 7e10aaf23..4fd3d46e3 100644
--- a/wadsrc/static/zscript/actors/actor.zs
+++ b/wadsrc/static/zscript/actors/actor.zs
@@ -460,6 +460,15 @@ class Actor : Thinker native
 	native void Substitute(Actor replacement);
 	native ui void DisplayNameTag();
 
+	// Called by inventory items to see if this actor is capable of touching them.
+	// If true, the item will attempt to be picked up. Useful for things like
+	// allowing morphs to pick up limited items such as keys while preventing
+	// them from picking other items up.
+	virtual bool CanTouchItem(Inventory item)
+	{
+		return true;
+	}
+
 	// Called by PIT_CheckThing to check if two actors actually can collide.
 	virtual bool CanCollideWith(Actor other, bool passive)
 	{
diff --git a/wadsrc/static/zscript/actors/inventory/inventory.zs b/wadsrc/static/zscript/actors/inventory/inventory.zs
index b6dcea9a6..e8b984d02 100644
--- a/wadsrc/static/zscript/actors/inventory/inventory.zs
+++ b/wadsrc/static/zscript/actors/inventory/inventory.zs
@@ -768,6 +768,9 @@ class Inventory : Actor
 
 		bool localview = toucher.CheckLocalView();
 
+		if (!toucher.CanTouchItem(self))
+			return;
+
 		bool res;
 		[res, toucher] = CallTryPickup(toucher);
 		if (!res) return;
diff --git a/wadsrc/static/zscript/base.zs b/wadsrc/static/zscript/base.zs
index e5619b0d7..f7b36ab03 100644
--- a/wadsrc/static/zscript/base.zs
+++ b/wadsrc/static/zscript/base.zs
@@ -711,6 +711,8 @@ struct LevelLocals native
 	native play int ExecuteSpecial(int special, Actor activator, line linedef, bool lineside, int arg1 = 0, int arg2 = 0, int arg3 = 0, int arg4 = 0, int arg5 = 0);
 	native void GiveSecret(Actor activator, bool printmsg = true, bool playsound = true);
 	native void StartSlideshow(Name whichone = 'none');
+	native static void MakeScreenShot();
+	native static void MakeAutoSave();
 	native void WorldDone();
     deprecated("3.8") static void RemoveAllBots(bool fromlist) { /* intentionally left as no-op. */ }
 	native ui Vector2 GetAutomapPosition();
diff --git a/wadsrc_extra/static/filter/game-doom/fonts/bigfont/0150.lmp b/wadsrc_extra/static/filter/game-doom/fonts/bigfont/0150.lmp
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diff --git a/wadsrc_extra/static/filter/game-doom/fonts/bigfont/040D.lmp b/wadsrc_extra/static/filter/game-doom/fonts/bigfont/040D.lmp
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diff --git a/wadsrc_extra/static/filter/game-doom/fonts/bigupper/0171.lmp b/wadsrc_extra/static/filter/game-doom/fonts/bigupper/0171.lmp
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diff --git a/wadsrc_extra/static/filter/game-doom/fonts/bigupper/045D.lmp b/wadsrc_extra/static/filter/game-doom/fonts/bigupper/045D.lmp
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diff --git a/wadsrc_extra/static/filter/game-doom/fonts/defsmallfont/0150.lmp b/wadsrc_extra/static/filter/game-doom/fonts/defsmallfont/0150.lmp
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diff --git a/wadsrc_extra/static/filter/game-strife/fonts/bigfont/0150.lmp b/wadsrc_extra/static/filter/game-strife/fonts/bigfont/0150.lmp
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diff --git a/wadsrc_extra/static/filter/game-strife/fonts/bigfont/font.inf b/wadsrc_extra/static/filter/game-strife/fonts/bigfont/font.inf
new file mode 100644
index 000000000..2f71f387c
--- /dev/null
+++ b/wadsrc_extra/static/filter/game-strife/fonts/bigfont/font.inf
@@ -0,0 +1 @@
+Kerning -1
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