1 files changed, 59 insertions, 0 deletions
diff --git a/src/gallium/winsys/drm/vmware/core/vmw_surface.c b/src/gallium/winsys/drm/vmware/core/vmw_surface.c
new file mode 100644
index 00000000000..9ec4bf92726
--- /dev/null
+++ b/src/gallium/winsys/drm/vmware/core/vmw_surface.c
@@ -0,0 +1,59 @@
+/**********************************************************
+ * Copyright 2009 VMware, Inc.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ **********************************************************/
+
+
+#include "svga_cmd.h"
+#include "util/u_debug.h"
+#include "util/u_memory.h"
+
+#include "vmw_surface.h"
+#include "vmw_screen.h"
+
+void
+vmw_svga_winsys_surface_reference(struct vmw_svga_winsys_surface **pdst,
+                                  struct vmw_svga_winsys_surface *src)
+{
+   struct pipe_reference *src_ref;
+   struct pipe_reference *dst_ref;
+   struct vmw_svga_winsys_surface *dst = *pdst;
+   
+   if(*pdst == src || pdst == NULL)
+      return;
+   
+   src_ref = src ? &src->refcnt : NULL;
+   dst_ref = dst ? &dst->refcnt : NULL;
+
+   if (pipe_reference(&dst_ref, src_ref)) {
+      vmw_ioctl_surface_destroy(dst->screen, dst->sid);
+#ifdef DEBUG
+      /* to detect dangling pointers */
+      assert(p_atomic_read(&dst->validated) == 0);
+      dst->sid = SVGA3D_INVALID_ID;
+#endif
+      FREE(dst);
+   }
+
+   *pdst = src;
+}