diff options
| author | Brian <brian.paul@tungstengraphics.com> | 2007-10-20 15:45:24 -0600 |
|---|---|---|
| committer | Brian <brian.paul@tungstengraphics.com> | 2007-10-20 15:45:24 -0600 |
| commit | 7c8b2f7ce33a672a90de8000bcbf15ec764e9d85 (patch) | |
| tree | 236217dec256b978248a3d926327de0042f97622 /src/mesa/pipe/softpipe | |
| parent | bb3d61551c8bb3fc60ca48bd2394d4ba7ba004d2 (diff) | |
In region_unmap(), check if region is mapped before decrementing refcount.
Diffstat (limited to 'src/mesa/pipe/softpipe')
| -rw-r--r-- | src/mesa/pipe/softpipe/sp_region.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/src/mesa/pipe/softpipe/sp_region.c b/src/mesa/pipe/softpipe/sp_region.c index 0f4d2f0575..4317a9ea1b 100644 --- a/src/mesa/pipe/softpipe/sp_region.c +++ b/src/mesa/pipe/softpipe/sp_region.c @@ -69,10 +69,13 @@ sp_region_unmap(struct pipe_context *pipe, struct pipe_region *region) { struct softpipe_context *sp = softpipe_context( pipe ); - if (!--region->map_refcount) { - sp->pipe.winsys->buffer_unmap( sp->pipe.winsys, - region->buffer ); - region->map = NULL; + if (region->map_refcount > 0) { + assert(region->map); + if (!--region->map_refcount) { + sp->pipe.winsys->buffer_unmap( sp->pipe.winsys, + region->buffer ); + region->map = NULL; + } } } |