1 files changed, 89 insertions, 0 deletions
diff --git a/src/mesa/pipe/p_inlines.h b/src/mesa/pipe/p_inlines.h
new file mode 100644
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+++ b/src/mesa/pipe/p_inlines.h
@@ -0,0 +1,89 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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, sub license, 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
+ * 
+ **************************************************************************/
+
+#ifndef P_INLINES_H
+#define P_INLINES_H
+
+#include "p_context.h"
+//#include "p_util.h"
+
+/**
+ * Set 'ptr' to point to 'region' and update reference counting.
+ * The old thing pointed to, if any, will be unreferenced first.
+ * 'region' may be NULL.
+ */
+static INLINE void
+pipe_region_reference(struct pipe_region **ptr, struct pipe_region *region)
+{
+   assert(ptr);
+   if (*ptr) {
+      /* unreference the old thing */
+      struct pipe_region *oldReg = *ptr;
+      assert(oldReg->refcount > 0);
+      oldReg->refcount--;
+      if (oldReg->refcount == 0) {
+         /* free the old region */
+         assert(oldReg->map_refcount == 0);
+         /* XXX dereference the region->buffer */
+         FREE( oldReg );
+      }
+      *ptr = NULL;
+   }
+   if (region) {
+      /* reference the new thing */
+      region->refcount++;
+      *ptr = region;
+   }
+}
+
+/**
+ * \sa pipe_region_reference
+ */
+static INLINE void
+pipe_surface_reference(struct pipe_surface **ptr, struct pipe_surface *surf)
+{
+   assert(ptr);
+   if (*ptr) {
+      /* unreference the old thing */
+      struct pipe_surface *oldSurf = *ptr;
+      assert(oldSurf->refcount > 0);
+      oldSurf->refcount--;
+      if (oldSurf->refcount == 0) {
+         /* free the old region */
+         pipe_region_reference(&oldSurf->region, NULL);
+         FREE( oldSurf );
+      }
+      *ptr = NULL;
+   }
+   if (surf) {
+      /* reference the new thing */
+      surf->refcount++;
+      *ptr = surf;
+   }
+}
+
+#endif /* P_INLINES_H */