From c9a1f1baa667eeb1de8bed90017834fb7faf5ca5 Mon Sep 17 00:00:00 2001
From: Cody Northrop <cody@lunarg.com>
Date: Wed, 9 Sep 2015 10:21:49 -0600
Subject: demos: Prevent tri rendering during shutdown

---
 demos/tri.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/demos/tri.c b/demos/tri.c
index feb187d9..95066338 100644
--- a/demos/tri.c
+++ b/demos/tri.c
@@ -1544,8 +1544,10 @@ LRESULT CALLBACK WndProc(HWND hWnd,
         PostQuitMessage(0);
         return 0;
     case WM_PAINT:
-        demo_run(&demo);
-        return 0;
+        if (demo.prepared) {
+            demo_run(&demo);
+            return 0;
+        }
     default:
         break;
     }
@@ -2149,6 +2151,8 @@ static void demo_cleanup(struct demo *demo)
 {
     uint32_t i;
 
+    demo->prepared = false;
+
     for (i = 0; i < DEMO_BUFFER_COUNT; i++) {
         vkDestroyFramebuffer(demo->device, demo->framebuffers[i]);
     }
-- 
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