diff --git a/renderdoc/driver/d3d12/d3d12_debug.cpp b/renderdoc/driver/d3d12/d3d12_debug.cpp
index e3799c21c..2cfb45225 100644
--- a/renderdoc/driver/d3d12/d3d12_debug.cpp
+++ b/renderdoc/driver/d3d12/d3d12_debug.cpp
@@ -1680,6 +1680,10 @@ void D3D12DebugManager::FillWithDiscardPattern(ID3D12GraphicsCommandListX *cmd,
 
     b.Transition.StateAfter = D3D12_RESOURCE_STATE_COPY_DEST;
 
+    // Special case for D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS
+    if(desc.Flags & D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS)
+      b.Transition.StateBefore = D3D12_RESOURCE_STATE_COMMON;
+
     D3D12_TEXTURE_BARRIER tex = {};
     D3D12_BARRIER_GROUP group = {};
 
@@ -1695,6 +1699,10 @@ void D3D12DebugManager::FillWithDiscardPattern(ID3D12GraphicsCommandListX *cmd,
       tex.AccessAfter = D3D12_BARRIER_ACCESS_COPY_DEST;
       tex.SyncAfter = D3D12_BARRIER_SYNC_COPY;
 
+      // Special case for D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS
+      if(desc.Flags & D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS)
+        tex.LayoutAfter = D3D12_BARRIER_LAYOUT_COMMON;
+
       tex.Flags = D3D12_TEXTURE_BARRIER_FLAG_DISCARD;
       tex.Subresources.IndexOrFirstMipLevel = (UINT)sub;
       tex.pResource = res;
@@ -1792,6 +1800,10 @@ void D3D12DebugManager::FillWithDiscardPattern(ID3D12GraphicsCommandListX *cmd,
         tex.LayoutAfter = D3D12_BARRIER_LAYOUT_COMMON;
       }
 
+      // Special case for D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS
+      if(desc.Flags & D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS)
+        tex.LayoutBefore = D3D12_BARRIER_LAYOUT_COMMON;
+
       cmd->Barrier(1, &group);
     }
     else