summaryrefslogtreecommitdiffstats
path: root/src/mesa/drivers
diff options
context:
space:
mode:
authorZhenyu Wang <[email protected]>2010-12-28 11:03:45 +0800
committerZhenyu Wang <[email protected]>2010-12-28 11:11:40 +0800
commit689aca782216d2666486dea02206cbc9c4162e0d (patch)
treea9bbe4c3e52570aeb1bf6b578927cc9723005061 /src/mesa/drivers
parent59fa8600d8efa803a4f86a41beaca78f7be41d7c (diff)
i965: Fix occlusion query on sandybridge
Clear target query buffer fixed occlusion query on sandybridge. https://bugs.freedesktop.org/show_bug.cgi?id=32167
Diffstat (limited to 'src/mesa/drivers')
-rw-r--r--src/mesa/drivers/dri/i965/brw_queryobj.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_queryobj.c b/src/mesa/drivers/dri/i965/brw_queryobj.c
index f28f28663ea..656aad630a1 100644
--- a/src/mesa/drivers/dri/i965/brw_queryobj.c
+++ b/src/mesa/drivers/dri/i965/brw_queryobj.c
@@ -232,6 +232,12 @@ brw_prepare_query_begin(struct brw_context *brw)
brw->query.bo = NULL;
brw->query.bo = drm_intel_bo_alloc(intel->bufmgr, "query", 4096, 1);
+
+ /* clear target buffer */
+ drm_intel_bo_map(brw->query.bo, GL_TRUE);
+ memset((char *)brw->query.bo->virtual, 0, 4096);
+ drm_intel_bo_unmap(brw->query.bo);
+
brw->query.index = 0;
}