Henri Verbeet : wined3d: Don' t try to access the swapchain of a destroyed context in context_set_gl_context ().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: cdc9aadf5c9144920caefcfe7a0e12915ee0ce38
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=cdc9aadf5c9144920caefcfe7a...

Author: Henri Verbeet <hverbeet(a)codeweavers.com>
Date:   Sun Oct 16 21:55:30 2011 +0200

wined3d: Don't try to access the swapchain of a destroyed context in context_set_gl_context().

---

 dlls/wined3d/context.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/dlls/wined3d/context.c b/dlls/wined3d/context.c
index 3353434..ef8b94e 100644
--- a/dlls/wined3d/context.c
+++ b/dlls/wined3d/context.c
@@ -768,6 +768,17 @@ static BOOL context_set_gl_context(struct wined3d_context *ctx)
         ctx->valid = 0;
         WARN("Trying fallback to the backup window.\n");
 
+        /* FIXME: If the context is destroyed it's no longer associated with
+         * a swapchain, so we can't use the swapchain to get a backup dc. To
+         * make this work windowless contexts would need to be handled by the
+         * device. */
+        if (ctx->destroyed)
+        {
+            FIXME("Unable to get backup dc for destroyed context %p.\n", ctx);
+            context_set_current(NULL);
+            return FALSE;
+        }
+
         if (!(dc = swapchain_get_backup_dc(swapchain)))
         {
             context_set_current(NULL);