From 3745d75543ded3bc457ff5aba152141d382ba306 Mon Sep 17 00:00:00 2001
From: Simon Kallweit <64953474+skallweitNV@users.noreply.github.com>
Date: Tue, 9 Sep 2025 17:55:27 +0200
Subject: Always define OptixTraversableHandle (#8411)

This fixes an issue where non-raytracing kernels couldn't contain any
RaytracingAccelerationStructure resources even when not used.
---
 prelude/slang-cuda-prelude.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/prelude/slang-cuda-prelude.h b/prelude/slang-cuda-prelude.h
index 062e0ca6c..5c5335ac5 100644
--- a/prelude/slang-cuda-prelude.h
+++ b/prelude/slang-cuda-prelude.h
@@ -4232,6 +4232,10 @@ slangOptixHitObjectSetSbtRecordIndex(OptixTraversableHandle* Obj, uint sbtRecord
     optixHitObjectSetSbtRecordIndex(sbtRecordIndex); // returns void
     return sbtRecordIndex;
 }
+#else
+// Define OptixTraversableHandle even if OptiX is not enabled.
+// This allows RaytracingAccelerationStructure to be properly reflected in non-OptiX code.
+typedef unsigned long long OptixTraversableHandle;
 #endif
 static const int kSlangTorchTensorMaxDim = 5;
 
-- 
cgit v1.2.3