wine/dlls/opengl32 wgl.c

[Alexandre Julliard]

ChangeSet ID:	21526
CVSROOT:	/opt/cvs-commit
Module name:	wine
Changes by:	julliard at winehq.org	2005/11/29 05:05:45

Modified files:
	dlls/opengl32  : wgl.c 

Log message:
	Raphael Junqueira <fenix at club-internet.fr>
	Fixed crash in wglShareList.

Patch: http://cvs.winehq.org/patch.py?id=21526

Old revision  New revision  Changes     Path
 1.67          1.68          +10 -9      wine/dlls/opengl32/wgl.c

Index: wine/dlls/opengl32/wgl.c
diff -u -p wine/dlls/opengl32/wgl.c:1.67 wine/dlls/opengl32/wgl.c:1.68
--- wine/dlls/opengl32/wgl.c:1.67	29 Nov 2005 11: 5:45 -0000
+++ wine/dlls/opengl32/wgl.c	29 Nov 2005 11: 5:45 -0000
@@ -560,7 +560,7 @@ BOOL WINAPI wglShareLists(HGLRC hglrc1,
 
   TRACE("(%p, %p)\n", org, dest);
 
-  if (dest->ctx != NULL) {
+  if (NULL != dest && dest->ctx != NULL) {
     ERR("Could not share display lists, context already created !\n");
     return FALSE;
   } else {
@@ -570,15 +570,16 @@ BOOL WINAPI wglShareLists(HGLRC hglrc1,
       LEAVE_GL();
       TRACE(" created a delayed OpenGL context (%p) for Wine context %p\n", org->ctx, org);
     }
-
-    ENTER_GL();
-    /* Create the destination context with display lists shared */
-    dest->ctx = glXCreateContext(org->display, dest->vis, org->ctx, True);
-    LEAVE_GL();
-    TRACE(" created a delayed OpenGL context (%p) for Wine context %p sharing lists with OpenGL ctx %p\n", dest->ctx, dest, org->ctx);
+    if (NULL != dest) {
+      ENTER_GL();
+      /* Create the destination context with display lists shared */
+      dest->ctx = glXCreateContext(org->display, dest->vis, org->ctx, True);
+      LEAVE_GL();
+      TRACE(" created a delayed OpenGL context (%p) for Wine context %p sharing lists with OpenGL ctx %p\n", dest->ctx, dest, org->ctx);
+      return TRUE;
+    }
   }
-
-  return TRUE;
+  return FALSE;
 }
 
 /***********************************************************************