csmt_usleep.diff

diff --git a/dlls/wined3d/cs.c b/dlls/wined3d/cs.c
index 98cfa2e..3934469 100644
--- a/dlls/wined3d/cs.c
+++ b/dlls/wined3d/cs.c
@@ -661,7 +661,10 @@ void wined3d_cs_emit_present(struct wined3d_cs *cs, struct wined3d_swapchain *sw
      * In Counter-Strike: Source a frame difference of 3 causes noticable
      * input delay that makes the game unplayable. */
     while (pending > 1)
+    {
+        usleep(0);
         pending = InterlockedCompareExchange(&cs->pending_presents, 0, 0);
+    }
 }
 
 static UINT wined3d_cs_exec_clear(struct wined3d_cs *cs, const void *data)
@@ -3193,7 +3196,8 @@ static void wined3d_cs_mt_finish(struct wined3d_cs *cs)
 
     /* A busy wait should be fine, we're not supposed to have to wait very
      * long. */
-    while (!InterlockedCompareExchange(&fence, TRUE, TRUE));
+    while (!InterlockedCompareExchange(&fence, TRUE, TRUE))
+      usleep(0);
 }
 
 static void wined3d_cs_mt_finish_prio(struct wined3d_cs *cs)
@@ -3215,7 +3219,8 @@ static void wined3d_cs_mt_finish_prio(struct wined3d_cs *cs)
 
     /* A busy wait should be fine, we're not supposed to have to wait very
      * long. */
-    while (!InterlockedCompareExchange(&fence, TRUE, TRUE));
+    while (!InterlockedCompareExchange(&fence, TRUE, TRUE))
+      usleep(0);
 }
 
 static const struct wined3d_cs_ops wined3d_cs_mt_ops =