// Called by CAVElib, on each of the child rendering processes
void CaveScene::draw(DisplayDevice *display) {
#if defined(CAVEUSERWLOCK)
if (display->is_renderer_process()) {
CAVESetReadLock(draw_rwlock);
Scene::draw(display); // draw the scene
CAVEUnsetReadLock(draw_rwlock);
} else {
CAVEUnsetWriteLock(draw_rwlock);
vmd_msleep(1); // give 'em 1 millisecond to draw before re-locking
CAVESetWriteLock(draw_rwlock);
}
#else
// Barrier synchronization for all drawing processes and the master
vmd_thread_barrier(draw_barrier, 0); // wait for start of drawing
Scene::draw(display); // draw the scene
vmd_thread_barrier(draw_barrier, 0); // wait for end of drawing.
#endif
}
void vrlib_lock_off (void *lock)
{
CAVEUnsetReadLock ((CAVELOCK) lock);
return;
}