wined3d: Avoid destroying active contexts.

dlls/wined3d/context.c

@@ -1354,6 +1354,12 @@ void context_release(struct wined3d_context *context)
             context->restore_ctx = NULL;
             context->restore_dc = NULL;
         }
+
+        if (context->destroy_delayed)
+        {
+            TRACE("Destroying context %p.\n", context);
+            context_destroy(context->device, context);
+        }
     }
 }
 
@@ -2012,6 +2018,17 @@ void context_destroy(struct wined3d_device *device, struct wined3d_context *cont
 
     TRACE("Destroying ctx %p\n", context);
 
+    /* We delay destroying a context when it is active. The context_release()
+     * function invokes context_destroy() again while leaving the last level. */
+    if (context->level)
+    {
+        TRACE("Delaying destruction of context %p.\n", context);
+        context->destroy_delayed = 1;
+        /* FIXME: Get rid of a pointer to swapchain from wined3d_context. */
+        context->swapchain = NULL;
+        return;
+    }
+
     if (context->tid == GetCurrentThreadId() || !context->current)
     {
         context_destroy_gl_resources(context);

dlls/wined3d/device.c

@@ -1185,13 +1185,9 @@ HRESULT CDECL wined3d_device_uninit_3d(struct wined3d_device *device)
     destroy_dummy_textures(device, gl_info);
     destroy_default_samplers(device);
 
-    /* Release the context again as soon as possible. In particular,
-     * releasing the render target views below may release the last reference
-     * to the swapchain associated with this context, which in turn will
-     * destroy the context. */
     context_release(context);
 
-    /* Release the buffers (with sanity checks)*/
+    /* Release the buffers (with sanity checks) */
     if (device->onscreen_depth_stencil)
     {
         surface = device->onscreen_depth_stencil;

dlls/wined3d/wined3d_private.h

@@ -1497,7 +1497,8 @@ struct wined3d_context
     DWORD hdc_is_private : 1;
     DWORD hdc_has_format : 1;           /* only meaningful if hdc_is_private */
     DWORD update_shader_resource_bindings : 1;
-    DWORD padding : 14;
+    DWORD destroy_delayed : 1;
+    DWORD padding : 13;
     DWORD last_swizzle_map; /* MAX_ATTRIBS, 16 */
     DWORD shader_update_mask;
     DWORD constant_update_mask;