- moved UpdateVRModes, AppActive and gamestate into the backend.

src/common/rendering/gl/gl_stereo3d.cpp

@@ -44,6 +44,7 @@
 #include "gl_framebuffer.h"
 #include "gl_shaderprogram.h"
 #include "gl_buffers.h"
+#include "menu.h"
 
 
 EXTERN_CVAR(Int, vr_mode)
@@ -53,7 +54,32 @@ EXTERN_CVAR(Float, vid_contrast)
 EXTERN_CVAR(Int, gl_satformula)
 EXTERN_CVAR(Int, gl_dither_bpc)
 
-void UpdateVRModes(bool considerQuadBuffered = true);
+#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;
+}
 
 namespace OpenGLRenderer
 {