From af70651a4843b16dd24e14b5cedffe399ebeb862 Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Sat, 20 Aug 2022 01:03:06 -0700
Subject: Call `gfx` in slang program. (#2370)

---
 source/slang/slang-emit-cpp.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'source/slang/slang-emit-cpp.cpp')

diff --git a/source/slang/slang-emit-cpp.cpp b/source/slang/slang-emit-cpp.cpp
index 3cfe4d8d4..345b6548a 100644
--- a/source/slang/slang-emit-cpp.cpp
+++ b/source/slang/slang-emit-cpp.cpp
@@ -1775,7 +1775,7 @@ void CPPSourceEmitter::emitComInterface(IRInterfaceType* interfaceType)
     for (UInt i = 0; i < interfaceType->getOperandCount(); i++)
     {
         auto entry = as<IRInterfaceRequirementEntry>(interfaceType->getOperand(i));
-        if (auto witnessTableType = as<IRWitnessTableType>(entry->getRequirementVal()))
+        if (auto witnessTableType = as<IRWitnessTableTypeBase>(entry->getRequirementVal()))
         {
             if (isFirst)
             {
@@ -2931,6 +2931,7 @@ void CPPSourceEmitter::_emitForwardDeclarations(const List<EmitAction>& actions)
                     {
                     case kIROp_Func:
                     case kIROp_StructType:
+                    case kIROp_InterfaceType:
                         emitForwardDeclaration(action.inst);
                         break;
                     default:
-- 
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