use albedo texture for test

PreShaderTest/PreShaderTestGame.cs

@@ -8,7 +8,8 @@ namespace PreShaderTest
         GraphicsDeviceManager graphics;
 
         VertexBuffer vertexBuffer;
-        Effect pbrEffect;
+        Smuggler.PBREffect pbrEffect;
+        Texture2D albedoTexture;
 
         public PreShaderTestGame()
         {
@@ -34,7 +35,11 @@ namespace PreShaderTest
                 )
             });
 
+            albedoTexture = new Texture2D(GraphicsDevice, 1, 1);
+            albedoTexture.SetData(new Color[] { new Color(1, 0, 1, 1) });
+            
             pbrEffect = new Smuggler.PBREffect(GraphicsDevice);
+            pbrEffect.AlbedoTexture = albedoTexture;
         }
 
         protected override void UnloadContent()