Mesa (master): nv50: support non-blocking query_result()

[Ben Skeggs]

Module: Mesa
Branch: master
Commit: 693f900b163f89952ed9b4c30d093f8ead461657
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=693f900b163f89952ed9b4c30d093f8ead461657

Author: Ben Skeggs <bskeggs at redhat.com>
Date:   Wed Jul 29 11:19:52 2009 +1000

nv50: support non-blocking query_result()

---

 src/gallium/drivers/nv50/nv50_query.c |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/gallium/drivers/nv50/nv50_query.c b/src/gallium/drivers/nv50/nv50_query.c
index 940e043..c354e10 100644
--- a/src/gallium/drivers/nv50/nv50_query.c
+++ b/src/gallium/drivers/nv50/nv50_query.c
@@ -107,13 +107,13 @@ nv50_query_result(struct pipe_context *pipe, struct pipe_query *pq,
 		  boolean wait, uint64_t *result)
 {
 	struct nv50_query *q = nv50_query(pq);
-
-	/*XXX: Want to be able to return FALSE here instead of blocking
-	 *     until the result is available..
-	 */
+	int ret;
 
 	if (!q->ready) {
-		nouveau_bo_map(q->bo, NOUVEAU_BO_RD);
+		ret = nouveau_bo_map(q->bo, NOUVEAU_BO_RD |
+				     wait ? 0 : NOUVEAU_BO_NOWAIT);
+		if (ret)
+			return false;
 		q->result = ((uint32_t *)q->bo->map)[1];
 		q->ready = TRUE;
 		nouveau_bo_unmap(q->bo);