✨ Add the WebGLMemoryStats plugin

Author: BenV

.gitignore

@@ -0,0 +1,34 @@
+/[Ll]ibrary/
+/[Tt]emp/
+/[Oo]bj/
+/[Bb]uild/
+/[Bb]uilds/
+/[Pp]roject[Ss]ettings/
+/Assets/AssetStoreTools*
+
+# Visual Studio 2015 cache directory
+/.vs/
+
+# Autogenerated VS/MD/Consulo solution and project files
+ExportedObj/
+.consulo/
+*.csproj
+*.unityproj
+*.sln
+*.suo
+*.tmp
+*.user
+*.userprefs
+*.pidb
+*.booproj
+*.svd
+*.pdb
+
+# Unity3D generated meta files
+*.pidb.meta
+
+# Unity3D Generated File On Crash Reports
+sysinfo.txt
+
+build.log
+*.unitypackage

Assets/Plugins.meta

@@ -0,0 +1,48 @@
+using UnityEngine;
+using System.Runtime.InteropServices;
+
+namespace Kongregate {
+    public class WebGLMemoryStats : MonoBehaviour {
+        [Tooltip("Interval (in seconds) between log entries")]
+        public uint LogIntervalSeconds = 15;
+
+        public static uint GetUsedMemorySize() {
+            return GetTotalStackSize() + GetStaticMemorySize() + GetDynamicMemorySize();
+        }
+
+#if UNITY_WEBGL && !UNITY_EDITOR
+        public static uint GetFreeMemorySize() {
+            return GetTotalMemorySize() - GetUsedMemorySize();
+        }
+
+        void Start() {
+            InvokeRepeating("Log", 0, LogIntervalSeconds);
+        }
+
+        private void Log() {
+            var total = GetTotalMemorySize() / 1024 / 1024;
+            var used = GetUsedMemorySize() / 1024 / 1024;
+            var free = GetFreeMemorySize() / 1024 / 1024;
+            Debug.Log(string.Format("WebGL Memory - Total: {0}MB, Used: {1}MB, Free: {2}MB", total, used, free));
+        }
+
+        [DllImport("__Internal")]
+        public static extern uint GetTotalMemorySize();
+
+        [DllImport("__Internal")]
+        public static extern uint GetTotalStackSize();
+
+        [DllImport("__Internal")]
+        public static extern uint GetStaticMemorySize();
+
+        [DllImport("__Internal")]
+        public static extern uint GetDynamicMemorySize();
+#else
+        public static uint GetFreeMemorySize() { return 0; }
+        public static uint GetTotalMemorySize() { return 0; }
+        public static uint GetTotalStackSize() { return 0; }
+        public static uint GetStaticMemorySize() { return 0; }
+        public static uint GetDynamicMemorySize() { return 0; }
+#endif
+    }
+}

Assets/Plugins/WebGLMemoryStats.meta

@@ -0,0 +1,25 @@
+var MemoryStatsPlugin = {
+
+  GetTotalMemorySize: function() {
+    return TOTAL_MEMORY; // WebGLMemorySize in bytes
+  },
+
+  GetTotalStackSize: function() {
+    return TOTAL_STACK;
+  },
+
+  GetStaticMemorySize: function() {
+    return STATICTOP - STATIC_BASE;
+  },
+
+  GetDynamicMemorySize: function() {
+    if (typeof DYNAMICTOP !== "undefined") {
+      return DYNAMICTOP - DYNAMIC_BASE;
+    } else {
+      // Unity 5.6+
+      return HEAP32[DYNAMICTOP_PTR >> 2] - DYNAMIC_BASE;
+    }
+  }
+};
+
+mergeInto(LibraryManager.library, MemoryStatsPlugin);

Assets/Plugins/WebGLMemoryStats/WebGLMemoryStats.cs

@@ -1,2 +1,10 @@
 # Unity-WebGL-Utilities
 Some helpful utilities for Unity WebGL games
+
+## WebGLMemoryStats
+
+This is a simple behavior that you can add to a persistent game object. It will periodically log WebGL memory statistics to the browser console to help you tune your WebGL memory size:
+
+![](http://kong.dreamhosters.com/grabs/Default_unity_-_mtx-unity_-_WebGL__Personal___OpenGL_4_1__1E96A487.png)
+
+![](http://kong.dreamhosters.com/grabs/Play_webgl-test__a_free_online_game_on_Kongregate_1E96A97A.png)

Assets/Plugins/WebGLMemoryStats/WebGLMemoryStats.cs.meta

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+if [ -z "$UNITY_DIR" ]; then
+  UNITY=/Applications/Unity/Unity.app/Contents/MacOS/Unity
+else
+  UNITY="$UNITY_DIR/Unity.app/Contents/MacOS/Unity"
+fi
+
+PROJECT_DIR=`pwd`
+echo "Using Unity Executable: $UNITY"
+
+"$UNITY" -batchmode -projectPath "$PROJECT_DIR" -exportPackage Assets/Plugins \
+         "$PROJECT_DIR/KongregateWebGLUtilities.unitypackage" -quit \
+         -logFile "$PROJECT_DIR/build.log"