Mesa (master): st/vdpau: improve frame dumping functionality a bit

[Christian König]

Module: Mesa
Branch: master
Commit: f23a2cb5d2f8087cbf0537aa46e353955ae3a6a8
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=f23a2cb5d2f8087cbf0537aa46e353955ae3a6a8

Author: Christian König <deathsimple at vodafone.de>
Date:   Thu Mar 15 11:14:47 2012 +0100

st/vdpau: improve frame dumping functionality a bit

Just a workaround until we get a real unit-
testing tool for VDPAU.

Signed-off-by: Christian König <deathsimple at vodafone.de>

---

 src/gallium/state_trackers/vdpau/presentation.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/gallium/state_trackers/vdpau/presentation.c b/src/gallium/state_trackers/vdpau/presentation.c
index d85e656..2e3bea9 100644
--- a/src/gallium/state_trackers/vdpau/presentation.c
+++ b/src/gallium/state_trackers/vdpau/presentation.c
@@ -286,9 +286,12 @@ vlVdpPresentationQueueDisplay(VdpPresentationQueue presentation_queue,
       static unsigned int framenum = 0;
       char cmd[256];
 
-      sprintf(cmd, "xwd -id %d -out vdpau_frame_%08d.xwd", (int)pq->drawable, ++framenum);
-      if (system(cmd) != 0)
-         VDPAU_MSG(VDPAU_ERR, "[VDPAU] Dumping surface %d failed.\n", surface);
+      if (framenum) {
+         sprintf(cmd, "xwd -id %d -silent -out vdpau_frame_%08d.xwd", (int)pq->drawable, framenum);
+         if (system(cmd) != 0)
+            VDPAU_MSG(VDPAU_ERR, "[VDPAU] Dumping surface %d failed.\n", surface);
+      }
+      framenum++;
    }
 
    pipe_resource_reference(&tex, NULL);