Add getNativeHandle() to ICommandQueue and ICommandBuffer (#1952)

* Added support for getting command buffer and command queue handles to ICommandBuffer and ICommandQueue; D3D12Device, VkDevice, and DebugDevice modifieid to implement this new functionality; immediate-renderer-base.cpp also modified to implement the new functions

* Removed excess boilerplate

* Changed readRef() to get() in D3D12 getNativeHandle() implementation for ICommandBuffer and ICommandQueue

* Added unit tests for new getNativeHandle() implementations, unfinished

* Queue test added; Minor cleanup changes

* getBufferHandleTestImpl() now closes the command buffer before returning

* Added getNativeHandle() implementations to CUDADevice

* Added comment clarifying that the Vulkan check is checking for a null handle, which is defined to be 0

1 files changed, 14 insertions, 0 deletions

diff --git a/tools/gfx/d3d12/render-d3d12.cpp b/tools/gfx/d3d12/render-d3d12.cpp
index c867e156b..2d8c5fa10 100644
--- a/tools/gfx/d3d12/render-d3d12.cpp
+++ b/tools/gfx/d3d12/render-d3d12.cpp
@@ -3520,6 +3520,13 @@ public:
 #endif
 
         virtual SLANG_NO_THROW void SLANG_MCALL close() override { m_cmdList->Close(); }
+
+        virtual SLANG_NO_THROW Result SLANG_MCALL
+            getNativeHandle(NativeHandle* outHandle) override
+        {
+            *outHandle = (uint64_t)m_cmdList.get();
+            return SLANG_OK;
+        }
     };
 
     class CommandQueueImpl
@@ -3609,6 +3616,13 @@ public:
             m_fence->SetEventOnCompletion(m_fenceValue, globalWaitHandle);
             WaitForSingleObject(globalWaitHandle, INFINITE);
         }
+
+        virtual SLANG_NO_THROW Result SLANG_MCALL
+            getNativeHandle(NativeHandle* outHandle) override
+        {
+            *outHandle = (uint64_t)m_d3dQueue.get();
+            return SLANG_OK;
+        }
     };
 
     class SwapchainImpl : public D3DSwapchainBase