Support for querying which parameters are used in emitted code (#2239)

See https://github.com/shader-slang/slang/issues/2213 

1 files changed, 14 insertions, 0 deletions

diff --git a/source/slang/slang-reflection-api.cpp b/source/slang/slang-reflection-api.cpp
index 583e000a6..96b1f9004 100644
--- a/source/slang/slang-reflection-api.cpp
+++ b/source/slang/slang-reflection-api.cpp
@@ -2580,6 +2580,20 @@ SLANG_API unsigned spReflectionParameter_GetBindingSpace(SlangReflectionParamete
             spReflectionVariableLayout_GetTypeLayout(varLayout)));
 }
 
+SLANG_API SlangResult spIsParameterLocationUsed(
+    SlangCompileRequest* request,
+    SlangInt entryPointIndex,
+    SlangInt targetIndex,
+    SlangParameterCategory category,
+    SlangUInt spaceIndex,
+    SlangUInt registerIndex,
+    bool& outUsed)
+{    
+    if (!request)
+        return SLANG_E_INVALID_ARG;
+        
+    return request->isParameterLocationUsed(entryPointIndex, targetIndex, category, spaceIndex, registerIndex, outUsed);
+}
 
 
 // Entry Point Reflection