+ struct llvmpipe_query *pq = llvmpipe_query(q);
+
+ /* Ideally we would refcount queries & not get destroyed until the
+ * last scene had finished with us.
+ */
+ if (pq->fence) {
+ if (!lp_fence_issued(pq->fence))
+ llvmpipe_flush(pipe, NULL, __FUNCTION__);
+
+ if (!lp_fence_signalled(pq->fence))
+ lp_fence_wait(pq->fence);
+
+ lp_fence_reference(&pq->fence, NULL);
+ }
+
+ FREE(pq);
+}
+
+
+static boolean
+llvmpipe_get_query_result(struct pipe_context *pipe,
+ struct pipe_query *q,
+ boolean wait,
+ union pipe_query_result *vresult)
+{
+ struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
+ unsigned num_threads = MAX2(1, screen->num_threads);
+ struct llvmpipe_query *pq = llvmpipe_query(q);
+ uint64_t *result = (uint64_t *)vresult;
+ int i;
+
+ if (!pq->fence) {
+ /* no fence because there was no scene, so results is zero */
+ *result = 0;
+ return TRUE;
+ }
+
+ if (!lp_fence_signalled(pq->fence)) {
+ if (!lp_fence_issued(pq->fence))
+ llvmpipe_flush(pipe, NULL, __FUNCTION__);
+
+ if (!wait)
+ return FALSE;
+
+ lp_fence_wait(pq->fence);
+ }
+
+ /* Sum the results from each of the threads:
+ */
+ *result = 0;
+
+ switch (pq->type) {
+ case PIPE_QUERY_OCCLUSION_COUNTER:
+ for (i = 0; i < num_threads; i++) {
+ *result += pq->count[i];
+ }
+ break;
+ case PIPE_QUERY_OCCLUSION_PREDICATE:
+ for (i = 0; i < num_threads; i++) {
+ /* safer (still not guaranteed) when there's an overflow */
+ *result = *result || pq->count[i];
+ }
+ break;
+ case PIPE_QUERY_TIMESTAMP:
+ for (i = 0; i < num_threads; i++) {
+ if (pq->count[i] > *result) {
+ *result = pq->count[i];
+ }
+ if (*result == 0)
+ *result = os_time_get_nano();
+ }
+ break;
+ case PIPE_QUERY_PRIMITIVES_GENERATED:
+ *result = pq->num_primitives_generated;
+ break;
+ case PIPE_QUERY_PRIMITIVES_EMITTED:
+ *result = pq->num_primitives_written;
+ break;
+ case PIPE_QUERY_SO_OVERFLOW_PREDICATE:
+ *result = pq->so_has_overflown;
+ break;
+ case PIPE_QUERY_SO_STATISTICS: {
+ struct pipe_query_data_so_statistics *stats =
+ (struct pipe_query_data_so_statistics *)vresult;
+ stats->num_primitives_written = pq->num_primitives_written;
+ stats->primitives_storage_needed = pq->num_primitives_generated;
+ }
+ break;
+ case PIPE_QUERY_PIPELINE_STATISTICS: {
+ struct pipe_query_data_pipeline_statistics *stats =
+ (struct pipe_query_data_pipeline_statistics *)vresult;
+ *stats = pq->stats;
+ }
+ break;
+ default:
+ assert(0);
+ break;
+ }
+
+ return TRUE;