Add reporting of RHI live objects if enabled (#471)

* Add reporting of RHI live objects if enabled

* Add missing cstdio include

* disable SLANG_RHI_ENABLE_REF_OBJECT_TRACKING

* Cast to void *

* formatting

Author: skallweitNV

include/slang-rhi.h

@@ -3292,7 +3292,7 @@ class IRHI
     }
 
     /// Reports current set of live objects.
-    /// Currently this just calls D3D's ReportLiveObjects.
+    /// Lists all live RHI objects as well as D3D's live objects (using ReportLiveObjects).
     virtual SLANG_NO_THROW Result SLANG_MCALL reportLiveObjects() = 0;
 
     /// Set the global task pool for the RHI.

src/core/smart-pointer.cpp

@@ -1,7 +1,23 @@
 #include "smart-pointer.h"
 
+#include <cstdio>
+
 namespace rhi {
 
+#if SLANG_RHI_ENABLE_REF_OBJECT_TRACKING
+void RefObjectTracker::reportLiveObjects()
+{
+    if (!objects.empty())
+    {
+        printf("Found %zu live RHI objects!\n", objects.size());
+        for (auto obj : objects)
+        {
+            printf("Live object: %p\n", static_cast<void*>(obj));
+        }
+    }
+}
+#endif
+
 #if SLANG_RHI_DEBUG
 std::atomic<uint64_t> RefObject::s_objectCount = 0;
 #endif

src/core/smart-pointer.h

@@ -31,6 +31,8 @@ struct RefObjectTracker
         objects.erase(obj);
     }
 
+    void reportLiveObjects();
+
     static RefObjectTracker& instance()
     {
         static RefObjectTracker tracker;

src/rhi.cpp

@@ -391,6 +391,9 @@ Result RHI::createBlob(const void* data, size_t size, ISlangBlob** outBlob)
 
 Result RHI::reportLiveObjects()
 {
+#if SLANG_RHI_ENABLE_REF_OBJECT_TRACKING
+    RefObjectTracker::instance().reportLiveObjects();
+#endif
 #if SLANG_RHI_ENABLE_D3D11 | SLANG_RHI_ENABLE_D3D12
     SLANG_RETURN_ON_FAIL(reportD3DLiveObjects());
 #endif