[Mesa-dev] [PATCH 16/45] st/nine: Catch redundant SetStreamSourceFreq calls

[Axel Davy]

Some apps do redundant SetStreamSourceFreq calls.
Catch them to improve performance.

Signed-off-by: Axel Davy <axel.davy at ens.fr>
Reviewed-by: Patrick Rudolph <siro at das-labor.org>
---
 src/gallium/state_trackers/nine/device9.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/gallium/state_trackers/nine/device9.c b/src/gallium/state_trackers/nine/device9.c
index e54b7ff..4495aa2 100644
--- a/src/gallium/state_trackers/nine/device9.c
+++ b/src/gallium/state_trackers/nine/device9.c
@@ -3554,6 +3554,9 @@ NineDevice9_SetStreamSourceFreq( struct NineDevice9 *This,
                   (Setting & D3DSTREAMSOURCE_INDEXEDDATA)), D3DERR_INVALIDCALL);
     user_assert(Setting, D3DERR_INVALIDCALL);
 
+    if (likely(!This->is_recording) && state->stream_freq[StreamNumber] == Setting)
+        return D3D_OK;
+
     state->stream_freq[StreamNumber] = Setting;
 
     if (Setting & D3DSTREAMSOURCE_INSTANCEDATA)
-- 
2.7.0