Update mixMaterial.ts

materialsLibrary/src/mix/mixMaterial.ts

@@ -171,22 +171,25 @@ export class MixMaterial extends PushMaterial {
 
         // Textures
         if (scene.texturesEnabled) {            
-            if (!this._mixTexture1 || !this._mixTexture1.isReady()) {
+            if (this._mixTexture1 && this._mixTexture1.isReady()) {
                 return false;
             }
                     
             defines._needUVs = true;
             
-            if (!this._mixTexture2 || !this._mixTexture2.isReady()) {                   
+            if (this._mixTexture2 && this._mixTexture2.isReady()) { 
                 return false;
-            } else {                    
+            } else {
                 defines.MIXMAP2 = true;
             }
             
-            if (MaterialFlags.DiffuseTextureEnabled) { 
+            if (MaterialFlags.DiffuseTextureEnabled) {                 
                 if (!this._diffuseTexture1 || !this._diffuseTexture1.isReady()) {
                     return false;
                 }
+                
+                defines.DIFFUSE = true;
+                
                 if (!this._diffuseTexture2 || !this._diffuseTexture2.isReady()) {
                     return false;
                 }
@@ -195,10 +198,7 @@ export class MixMaterial extends PushMaterial {
                 }
                 if (!this._diffuseTexture4 || !this._diffuseTexture4.isReady()) {
                     return false;
-                }  
-                
-                defines.DIFFUSE = true;
-                
+                }                
                 if (!this._diffuseTexture5 || !this._diffuseTexture5.isReady()) {
                     return false;
                 }
@@ -210,11 +210,9 @@ export class MixMaterial extends PushMaterial {
                 }
                 if (!this._diffuseTexture8 || !this._diffuseTexture8.isReady()) {
                     return false;
-                }          
-                                 
+                }
             }
         }
-       
 
         // Misc.
         MaterialHelper.PrepareDefinesForMisc(mesh, scene, false, this.pointsCloud, this.fogEnabled, this._shouldTurnAlphaTestOn(mesh), defines);