Condense renderer information into a single string

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -34,13 +34,6 @@ body:
       render: "true"
     validations:
       required: true
-  - type: input
-    attributes:
-      label: Irrlicht device
-      description:
-      placeholder: "Example: X11"
-    validations:
-      required: false
   - type: input
     attributes:
       label: Operating system and version
@@ -69,7 +62,7 @@ body:
     attributes:
       label: Active renderer
       description: You can find this in the "About" tab in the main menu.
-      placeholder: "Example: OpenGL 4.6.0"
+      placeholder: "Example: ES 3.2 / ogles2 / X11"
     validations:
       required: false
   - type: textarea

builtin/mainmenu/tab_about.lua

@@ -32,6 +32,27 @@ local function get_credits()
 	return json
 end
 
+local function get_renderer_info()
+	local ret = {}
+
+	-- OpenGL version, stripped to just the important part
+	local s1 = core.get_active_renderer()
+	if s1:sub(1, 7) == "OpenGL " then
+		s1 = s1:sub(8)
+	end
+	local m = s1:match("^[%d.]+")
+	if not m then
+		m = s1:match("^ES [%d.]+")
+	end
+	ret[#ret+1] = m or s1
+	-- video driver
+	ret[#ret+1] = core.get_active_driver():lower()
+	-- irrlicht device
+	ret[#ret+1] = core.get_active_irrlicht_device():upper()
+
+	return table.concat(ret, " / ")
+end
+
 return {
 	name = "about",
 	caption = fgettext("About"),
@@ -81,20 +102,12 @@ return {
 			"button_url[1.5,4.1;2.5,0.8;homepage;luanti.org;https://www.luanti.org/]" ..
 			"hypertext[5.5,0.25;9.75,6.6;credits;" .. core.formspec_escape(hypertext) .. "]"
 
-		-- Render information
-		local active_renderer_info = fgettext("Active renderer:") .. " " ..
-			core.formspec_escape(core.get_active_renderer())
+		local active_renderer_info = fgettext("Active renderer:") .. "\n" ..
+			core.formspec_escape(get_renderer_info())
 		fs = fs .. "style[label_button2;border=false]" ..
-			"button[0.1,6;5.3,0.5;label_button2;" .. active_renderer_info .. "]"..
+			"button[0.1,6;5.3,1;label_button2;" .. active_renderer_info .. "]"..
 			"tooltip[label_button2;" .. active_renderer_info .. "]"
 
-		-- Irrlicht device information
-		local irrlicht_device_info = fgettext("Irrlicht device:") .. " " ..
-			core.formspec_escape(core.get_active_irrlicht_device())
-		fs = fs .. "style[label_button3;border=false]" ..
-			"button[0.1,6.5;5.3,0.5;label_button3;" .. irrlicht_device_info .. "]"..
-			"tooltip[label_button3;" .. irrlicht_device_info .. "]"
-
 		if PLATFORM == "Android" then
 			fs = fs .. "button[0.5,5.1;4.5,0.8;share_debug;" .. fgettext("Share debug log") .. "]"
 		else