sync code with last improvements from OpenBSD

xserver/glamor/glamor_addtraps.c

@@ -0,0 +1,40 @@
+/*
+ * Copyright © 2009 Intel Corporation
+ * Copyright © 1998 Keith Packard
+ *
+ * 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 (including the next
+ * paragraph) 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.
+ *
+ * Authors:
+ *    Zhigang Gong <zhigang.gong@gmail.com>
+ *
+ */
+
+#include "glamor_priv.h"
+
+void
+glamor_add_traps(PicturePtr pPicture,
+                 INT16 x_off,
+                 INT16 y_off, int ntrap, xTrap *traps)
+{
+    if (glamor_prepare_access_picture(pPicture, GLAMOR_ACCESS_RW)) {
+        fbAddTraps(pPicture, x_off, y_off, ntrap, traps);
+    }
+    glamor_finish_access_picture(pPicture);
+}