From a3d80ae3ebbb380e1c4bc5407730b2caffb8208d Mon Sep 17 00:00:00 2001
From: rdb <git@rdb.name>
Date: Thu, 3 Jul 2014 22:06:51 +0000
Subject: [PATCH] Use explicit cast to try and squelch compile error

---
 panda/src/glstuff/glGraphicsStateGuardian_src.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/panda/src/glstuff/glGraphicsStateGuardian_src.cxx b/panda/src/glstuff/glGraphicsStateGuardian_src.cxx
index d58478bc28..86422696d1 100644
--- a/panda/src/glstuff/glGraphicsStateGuardian_src.cxx
+++ b/panda/src/glstuff/glGraphicsStateGuardian_src.cxx
@@ -476,7 +476,7 @@ reset() {
                              0, NULL, GLCAT.is_debug());
 
       // Enable the callback.
-      _glDebugMessageCallback(&debug_callback, (void*)this);
+      _glDebugMessageCallback((GLDEBUGPROC) &debug_callback, (void*)this);
       if (gl_debug_synchronous) {
         glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
       }