Added implementations for IFence::getSharedHandle() for Vulkan and D3D12 (#2137)

Co-authored-by: Yong He <yonghe@outlook.com>

1 files changed, 13 insertions, 2 deletions

diff --git a/tools/gfx/d3d12/render-d3d12.cpp b/tools/gfx/d3d12/render-d3d12.cpp
index 9be157605..5500b024a 100644
--- a/tools/gfx/d3d12/render-d3d12.cpp
+++ b/tools/gfx/d3d12/render-d3d12.cpp
@@ -4947,8 +4947,19 @@ public:
 
         virtual SLANG_NO_THROW Result SLANG_MCALL getSharedHandle(InteropHandle* outHandle) override
         {
-            outHandle->handleValue = 0;
-            return SLANG_FAIL;
+            // Check if a shared handle already exists.
+            if (sharedHandle.handleValue != 0)
+            {
+                *outHandle = sharedHandle;
+                return SLANG_OK;
+            }
+
+            ComPtr<ID3D12Device> devicePtr;
+            m_fence->GetDevice(IID_PPV_ARGS(devicePtr.writeRef()));
+            SLANG_RETURN_ON_FAIL(devicePtr->CreateSharedHandle(m_fence, NULL, GENERIC_ALL, nullptr, (HANDLE*)&outHandle->handleValue));
+            outHandle->api = InteropHandleAPI::D3D12;
+            sharedHandle = *outHandle;
+            return SLANG_OK;
         }
 
         virtual SLANG_NO_THROW Result SLANG_MCALL