1 files changed, 1 insertions, 0 deletions
diff --git a/slang.h b/slang.h
index 732402441..1b9302036 100644
--- a/slang.h
+++ b/slang.h
@@ -721,6 +721,7 @@ extern "C"
         SLANG_LINE_DIRECTIVE_MODE_NONE,         /**< Don't emit line directives at all. */
         SLANG_LINE_DIRECTIVE_MODE_STANDARD,     /**< Emit standard C-style `#line` directives. */
         SLANG_LINE_DIRECTIVE_MODE_GLSL,         /**< Emit GLSL-style directives with file *number* instead of name */
+        SLANG_LINE_DIRECTIVE_MODE_SOURCE_MAP,   /**< Use a source map to track line mappings (ie no #line will appear in emitting source) */
     };
 
     typedef int SlangSourceLanguageIntegral;