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Diffstat (limited to 'src/mesa/pipe/p_inlines.h')
-rw-r--r-- | src/mesa/pipe/p_inlines.h | 89 |
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 index 00000000000..ea666fa20ae --- /dev/null +++ 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 */ |