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, 13 insertions, 0 deletions

diff --git a/tools/gfx/immediate-renderer-base.cpp b/tools/gfx/immediate-renderer-base.cpp
index fbe5ad423..e87c1e558 100644
--- a/tools/gfx/immediate-renderer-base.cpp
+++ b/tools/gfx/immediate-renderer-base.cpp
@@ -277,6 +277,13 @@ public:
 
     virtual SLANG_NO_THROW void SLANG_MCALL close() override { }
 
+    virtual SLANG_NO_THROW Result SLANG_MCALL
+        getNativeHandle(NativeHandle* outHandle)
+    {
+        *outHandle = 0;
+        return SLANG_OK;
+    }
+
     void execute()
     {
         for (auto& cmd : m_writer.m_commands)
@@ -412,6 +419,12 @@ public:
     }
 
     virtual SLANG_NO_THROW void SLANG_MCALL wait() override { getRenderer()->waitForGpu(); }
+
+    virtual SLANG_NO_THROW Result SLANG_MCALL
+        getNativeHandle(NativeHandle* outHandle) override
+    {
+        return getRenderer()->m_queue->getNativeHandle(outHandle);
+    }
 };
 
 using TransientResourceHeapImpl =