From a6a638822cd8eae0ac8e94fa3e826a17fccd5881 Mon Sep 17 00:00:00 2001
From: Mr F <somemail256@gmail.com>
Date: Wed, 19 Aug 2015 13:20:13 +0300
Subject: [PATCH] fix instancing when dynamically changing instance count

---
 src/scene/scene_forwardrenderer.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/scene/scene_forwardrenderer.js b/src/scene/scene_forwardrenderer.js
index fee35557968..41f20eddecf 100644
--- a/src/scene/scene_forwardrenderer.js
+++ b/src/scene/scene_forwardrenderer.js
@@ -951,13 +951,13 @@ pc.extend(pc, function () {
                     }
 
                     if (material !== prevMaterial) {
-
-                        if (!meshInstance._shader) {
+                        if (!meshInstance._shader || meshInstance._shaderDefs !== objDefs) {
                             meshInstance._shader = material.variants[objDefs];
                             if (!meshInstance._shader) {
                                 material.updateShader(device, scene, objDefs);
                                 meshInstance._shader = material.variants[objDefs] = material.shader;
                             }
+                            meshInstance._shaderDefs = objDefs;
                         }
                         device.setShader(meshInstance._shader);