diff --git a/src/game-lib-d3-texture.js b/src/game-lib-d3-texture.js
index 3278c6c..25267df 100644
--- a/src/game-lib-d3-texture.js
+++ b/src/game-lib-d3-texture.js
@@ -203,15 +203,18 @@ GameLib.D3.Texture.prototype.createInstance = function() {
 
     } else if (this.typeId === GameLib.D3.Texture.TEXTURE_TYPE_NORMAL) {
 
-        if (GameLib.Utils.UndefinedOrNull(this.image)) {
+        if (
+            GameLib.Utils.UndefinedOrNull(this.image) ||
+            GameLib.Utils.UndefinedOrNull(this.image.instance)
+        ) {
 
             this.instance = new THREE.Texture();
 
         } else {
 
-            if (GameLib.Utils.UndefinedOrNull(this.image.instance)) {
-                throw new Error('no image instance');
-            }
+            //if (GameLib.Utils.UndefinedOrNull(this.image.instance)) {
+            //    throw new Error('no image instance');
+            //}
 
             this.instance = new THREE.Texture(
                 this.image.instance
@@ -304,7 +307,26 @@ GameLib.D3.Texture.prototype.updateInstance = function() {
 
     } else if (this.typeId === GameLib.D3.Texture.TEXTURE_TYPE_CANVAS) {
 
-        console.log('todo : canvas change check here');
+        if (
+            GameLib.Utils.UndefinedOrNull(this.canvas) &&
+            this.instance.canvas
+        ) {
+            try {
+                this.createInstance();
+                imageChanged = true;
+            } catch (error) {
+                console.error(error);
+            }
+        }
+
+        if (this.canvas && this.canvas.instance && this.instance.image !== this.canvas.instance) {
+            try {
+                this.createInstance();
+                imageChanged = true;
+            } catch (error) {
+                console.error(error);
+            }
+        }
 
     } else if (this.typeId === GameLib.D3.Texture.TEXTURE_TYPE_CUBE) {