Upstream merge of material scanner overlay

code/_onclick/hud/hud.dm

@@ -12,7 +12,8 @@ var/list/global_huds = list(
 		global_hud.nvg,
 		global_hud.thermal,
 		global_hud.meson,
-		global_hud.science
+		global_hud.science,
+		global_hud.material
 		)
 
 /datum/hud/var/obj/screen/grab_intent
@@ -30,6 +31,7 @@ var/list/global_huds = list(
 	var/obj/screen/thermal
 	var/obj/screen/meson
 	var/obj/screen/science
+	var/obj/screen/material
 
 /datum/global_hud/proc/setup_overlay(var/icon_state)
 	var/obj/screen/screen = new /obj/screen()
@@ -66,6 +68,7 @@ var/list/global_huds = list(
 	thermal = setup_overlay("thermal_hud")
 	meson = setup_overlay("meson_hud")
 	science = setup_overlay("science_hud")
+	material = setup_overlay("material_hud")
 
 	var/obj/screen/O
 	var/i

code/modules/clothing/glasses/glasses.dm

@@ -191,6 +191,9 @@ BLIND     // can't see anything
 	vision_flags = SEE_OBJS
 	enables_planes = list(VIS_FULLBRIGHT)
 
+/obj/item/clothing/glasses/material/New()
+	..()
+	overlay = global_hud.material
 
 /obj/item/clothing/glasses/material/prescription
 	name = "prescription optical material scanner"

code/modules/mob/living/carbon/human/life.dm

@@ -1091,7 +1091,7 @@
 
 	..()
 
-	client.screen.Remove(global_hud.blurry, global_hud.druggy, global_hud.vimpaired, global_hud.darkMask, global_hud.nvg, global_hud.thermal, global_hud.meson, global_hud.science, global_hud.whitense)
+	client.screen.Remove(global_hud.blurry, global_hud.druggy, global_hud.vimpaired, global_hud.darkMask, global_hud.nvg, global_hud.thermal, global_hud.meson, global_hud.science, global_hud.material, global_hud.whitense)
 
 	if(istype(client.eye,/obj/machinery/camera))
 		var/obj/machinery/camera/cam = client.eye