From 416398aecb9fe9a007f0755471a7dbea0b5a791e Mon Sep 17 00:00:00 2001
From: Silvio Vilerino <sivileri@microsoft.com>
Date: Thu, 16 Oct 2025 20:21:16 -0400
Subject: [PATCH] mediafoundation: Only attach stats to last slice mfsample

Reviewed-by: Pohsiang (John) Hsu <pohhsu@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37982>
---
 src/gallium/frontends/mediafoundation/mftransform.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/gallium/frontends/mediafoundation/mftransform.cpp b/src/gallium/frontends/mediafoundation/mftransform.cpp
index 28747ef94fc..f4aabfd66f1 100644
--- a/src/gallium/frontends/mediafoundation/mftransform.cpp
+++ b/src/gallium/frontends/mediafoundation/mftransform.cpp
@@ -1349,7 +1349,8 @@ CDX12EncHMFT::FinalizeAndEmitOutputSample( LPDX12EncodeContext pDX12EncodeContex
    }
 
    // Attach the async stats DXGIBuffers to the MFSample output gated by pAsyncFence completion
-   {
+   // Only to the last slice (or full frame) sample.
+   if (bIsLastSlice) {
       // Set stats metadata buffers to the sample here. As we are returning the dxgi buffers gated by the completion fence
       // for the resolved stats we do not need to wait for the pAsyncFence completion on the CPU.
       if( FAILED( ConfigureAsyncStatsMetadataOutputSampleAttributes( spOutputSample.Get(),