1 files changed, 15 insertions, 0 deletions
diff --git a/source/slang/slang-parser.cpp b/source/slang/slang-parser.cpp
index 7e6d7d308..3a1b627bd 100644
--- a/source/slang/slang-parser.cpp
+++ b/source/slang/slang-parser.cpp
@@ -6277,6 +6277,21 @@ namespace Slang
         {
             return SPIRVAsmOperand{SPIRVAsmOperand::ResultMarker, parser->ReadToken()};
         }
+        else if (AdvanceIf(parser, "builtin"))
+        {
+            // reference to a builtin var.
+            parser->ReadToken(TokenType::LParent);
+            auto operand = SPIRVAsmOperand{ SPIRVAsmOperand::BuiltinVar, parser->ReadToken() };
+            parser->ReadToken(TokenType::Colon);
+            AdvanceIf(parser, TokenType::DollarDollar);
+            operand.type = parser->ParseTypeExp();
+            parser->ReadToken(TokenType::RParent);
+            return operand;
+        }
+        else if (parser->LookAheadToken("glsl450"))
+        {
+            return SPIRVAsmOperand{ SPIRVAsmOperand::GLSL450Set, parser->ReadToken() };
+        }
 
         // A regular identifier
         else if(parser->LookAheadToken(TokenType::Identifier))