[PATCH 4/5] wined3d: Make the CS thread yield CPU when it can't block waiting.

[Matteo Bruni]

From: Matteo Bruni

It can't block because there are pending queries.
---
 dlls/wined3d/cs.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/dlls/wined3d/cs.c b/dlls/wined3d/cs.c
index 2cd53cd7a5b..04e37f5e712 100644
--- a/dlls/wined3d/cs.c
+++ b/dlls/wined3d/cs.c
@@ -3422,8 +3422,13 @@ static DWORD WINAPI wined3d_cs_run(void *ctx)
             if (wined3d_cs_queue_is_empty(cs, queue))
             {
                 YieldProcessor();
-                if (++spin_count >= WINED3D_CS_SPIN_COUNT && list_empty(&cs->query_poll_list))
-                    wined3d_cs_wait_event(cs);
+                if (++spin_count >= WINED3D_CS_SPIN_COUNT)
+                {
+                    if (list_empty(&cs->query_poll_list))
+                        wined3d_cs_wait_event(cs);
+                    else
+                        Sleep(0);
+                }
                 continue;
             }
         }