diff --git a/wadsrc/static/language.enu b/wadsrc/static/language.enu
index a700c6db15..7880ea1255 100644
--- a/wadsrc/static/language.enu
+++ b/wadsrc/static/language.enu
@@ -2771,6 +2771,7 @@ GLTEXMNU_ANISOTROPIC	= "Anisotropic filter";
 GLTEXMNU_TEXFORMAT 		= "Texture Format";
 GLTEXMNU_ENABLEHIRES 	= "Enable hires textures";
 GLTEXMNU_HQRESIZE 		= "High Quality Resize mode";
+GLTEXMNU_HQRESIZEWARN 	= "This mode requires %d times more video memory";
 GLTEXMNU_RESIZETEX 		= "Resize textures";
 GLTEXMNU_RESIZESPR 		= "Resize sprites";
 GLTEXMNU_RESIZEFNT 		= "Resize fonts";
diff --git a/wadsrc/static/menudef.txt b/wadsrc/static/menudef.txt
index 6c3571adce..9b527e2eb4 100644
--- a/wadsrc/static/menudef.txt
+++ b/wadsrc/static/menudef.txt
@@ -2256,12 +2256,15 @@ OptionMenu "GLTextureGLOptions" protected
 	{
 		Option "$GLTEXMNU_HQRESIZE",		gl_texture_hqresize,			"HqResizeModesNoMMX"
 	}
+	StaticText "!HQRESIZE_WARNING!"
+
 	Option "$GLTEXMNU_RESIZETEX",		gl_texture_hqresize_textures,	"OnOff"
 	Option "$GLTEXMNU_RESIZESPR",		gl_texture_hqresize_sprites,	"OnOff"
 	Option "$GLTEXMNU_RESIZEFNT",		gl_texture_hqresize_fonts,		"OnOff"
 	Option "$GLTEXMNU_PRECACHETEX",		gl_precache,					"YesNo"
 	Option "$GLTEXMNU_TRIMSPREDGE",		gl_trimsprites,					"OnOff"
 	Option "$GLTEXMNU_SORTDRAWLIST", 	gl_sort_textures,				"YesNo"
+	Class "GLTextureGLOptions"
 }
 
 OptionMenu "GLLightOptions" protected
diff --git a/wadsrc/static/zscript/menu/optionmenu.txt b/wadsrc/static/zscript/menu/optionmenu.txt
index ad8aa14187..a06a31b6a6 100644
--- a/wadsrc/static/zscript/menu/optionmenu.txt
+++ b/wadsrc/static/zscript/menu/optionmenu.txt
@@ -536,3 +536,75 @@ class CompatibilityMenu : OptionMenu
 			DTA_CleanNoMove_1, true);
 	}
 }
+
+class GLTextureGLOptions : OptionMenu
+{
+	private int mWarningIndex;
+
+	override void Init(Menu parent, OptionMenuDescriptor desc)
+	{
+		super.Init(parent, desc);
+
+		for (int i=0; i < mDesc.mItems.Size(); ++i)
+		{
+			if (mDesc.mItems[i].mLabel == "!HQRESIZE_WARNING!")
+			{
+				mWarningIndex = i;
+				break;
+			}
+		}
+	}
+
+	override void Ticker()
+	{
+		Super.Ticker();
+
+		if (mWarningIndex > 0)
+		{
+			string message;
+
+			if (gl_texture_hqresize > 0)
+			{
+				int multiplier;
+
+				switch (gl_texture_hqresize)
+				{
+				case 1:
+				case 4:
+				case 7:
+				case 10:
+				case 13:
+					multiplier = 4;
+					break;
+				case 2:
+				case 5:
+				case 8:
+				case 11:
+				case 14:
+					multiplier = 9;
+					break;
+				case 3:
+				case 6:
+				case 9:
+				case 12:
+				case 15:
+					multiplier = 16;
+					break;
+				case 16:
+				case 18:
+					multiplier = 25;
+					break;
+				case 17:
+				case 19:
+					multiplier = 36;
+					break;
+				}
+
+				string localized = StringTable.Localize("$GLTEXMNU_HQRESIZEWARN");
+				message = String.Format(localized, multiplier);
+			}
+
+			mDesc.mItems[mWarningIndex].mLabel = message;
+		}
+	}
+}