Mesa (master): mesa: Ensure object refcount is null when destroying the buffer.

[Jose Fonseca]

Module: Mesa
Branch: master
Commit: 829d9bb7334ffea0d5d0c4076dd75c41525fae0c
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=829d9bb7334ffea0d5d0c4076dd75c41525fae0c

Author: José Fonseca <jfonseca at vmware.com>
Date:   Mon Feb  1 21:33:04 2010 +0000

mesa: Ensure object refcount is null when destroying the buffer.

Lets see if this is not too pedantic. Obj pointers are never exposed to
GL apps so it should be possible to get this right.

Furthermore apps with GL widgets and test suits create and destroy many
contexts and objects, so bad reference counting is not really an option.

---

 src/mesa/state_tracker/st_cb_bufferobjects.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/src/mesa/state_tracker/st_cb_bufferobjects.c b/src/mesa/state_tracker/st_cb_bufferobjects.c
index 3ff5890..f1b4f11 100644
--- a/src/mesa/state_tracker/st_cb_bufferobjects.c
+++ b/src/mesa/state_tracker/st_cb_bufferobjects.c
@@ -75,6 +75,8 @@ st_bufferobj_free(GLcontext *ctx, struct gl_buffer_object *obj)
 {
    struct st_buffer_object *st_obj = st_buffer_object(obj);
 
+   assert(obj->RefCount == 0);
+
    if (st_obj->buffer) 
       pipe_buffer_reference(&st_obj->buffer, NULL);