From cc738e004f083566f3e1723f72623ef9875f72ec Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Tue, 1 Aug 2006 20:03:29 +0000
Subject: [PATCH] casts and assertions

---
 progs/demos/vao_demo.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/progs/demos/vao_demo.c b/progs/demos/vao_demo.c
index b037816..ce41671 100644
--- a/progs/demos/vao_demo.c
+++ b/progs/demos/vao_demo.c
@@ -22,6 +22,7 @@
  * DEALINGS IN THE SOFTWARE.
  */
 
+#include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <math.h>
@@ -280,11 +281,15 @@ static void Init( void )
       exit(1);
    }
 
-   bind_vertex_array = glutGetProcAddress( "glBindVertexArrayAPPLE" );
-   gen_vertex_arrays = glutGetProcAddress( "glGenVertexArraysAPPLE" );
-   delete_vertex_arrays = glutGetProcAddress( "glDeleteVertexArraysAPPLE" );
-   is_vertex_array = glutGetProcAddress( "glIsVertexArrayAPPLE" );
+   bind_vertex_array = (PFNGLBINDVERTEXARRAYAPPLEPROC) glutGetProcAddress( "glBindVertexArrayAPPLE" );
+   gen_vertex_arrays = (PFNGLGENVERTEXARRAYSAPPLEPROC) glutGetProcAddress( "glGenVertexArraysAPPLE" );
+   delete_vertex_arrays = (PFNGLDELETEVERTEXARRAYSAPPLEPROC) glutGetProcAddress( "glDeleteVertexArraysAPPLE" );
+   is_vertex_array = (PFNGLISVERTEXARRAYAPPLEPROC) glutGetProcAddress( "glIsVertexArrayAPPLE" );
 
+   assert(bind_vertex_array);
+   assert(gen_vertex_arrays);
+   assert(delete_vertex_arrays);
+   assert(is_vertex_array);
 
    glEnable( GL_DEPTH_TEST );
    
-- 
2.7.4