- _glthread_LOCK_MUTEX((*rb)->Mutex);
- ASSERT((*rb)->RefCount > 0);
- (*rb)->RefCount--;
- deleteFlag = ((*rb)->RefCount == 0);
- _glthread_UNLOCK_MUTEX((*rb)->Mutex);
+ if (*ptr) {
+ /* Unreference the old renderbuffer */
+ GLboolean deleteFlag = GL_FALSE;
+ struct gl_renderbuffer *oldRb = *ptr;
+
+ assert(oldRb->Magic == RB_MAGIC);
+ _glthread_LOCK_MUTEX(oldRb->Mutex);
+ assert(oldRb->Magic == RB_MAGIC);
+ ASSERT(oldRb->RefCount > 0);
+ oldRb->RefCount--;
+ /*printf("RB DECR %p (%d) to %d\n", (void*) oldRb, oldRb->Name, oldRb->RefCount);*/
+ deleteFlag = (oldRb->RefCount == 0);
+ _glthread_UNLOCK_MUTEX(oldRb->Mutex);
+
+ if (deleteFlag) {
+ oldRb->Magic = 0; /* now invalid memory! */
+ oldRb->Delete(oldRb);
+ }