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/**************************************************************************
*
* 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_winsys.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) {
struct pipe_winsys *winsys = (*ptr)->winsys;
winsys->surface_release(winsys, ptr);
assert(!*ptr);
}
if (surf) {
/* reference the new thing */
surf->refcount++;
*ptr = surf;
}
}
#endif /* P_INLINES_H */
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