Add stencil reference as a supported shader builtin

renderdoc/api/replay/renderdoc_tostr.inl

@@ -518,6 +518,7 @@ std::string DoStringise(const ShaderBuiltin &el)
     STRINGISE_ENUM_CLASS_NAMED(DepthOutput, "Depth Output");
     STRINGISE_ENUM_CLASS_NAMED(DepthOutputGreaterEqual, "Depth Output (GEqual)");
     STRINGISE_ENUM_CLASS_NAMED(DepthOutputLessEqual, "Depth Output (LEqual)");
+    STRINGISE_ENUM_CLASS_NAMED(StencilReference, "Stencil Ref Value");
   }
   END_ENUM_STRINGISE();
 }

renderdoc/api/replay/replay_enums.h

@@ -744,6 +744,10 @@ to apply to multiple related things - see :data:`ClipDistance`, :data:`CullDista
 
   For indirect or multi-draw commands, the index of this draw call within the overall draw command.
 
+.. data:: StencilReference
+
+  The stencil reference to be used for stenciling operations on this fragment.
+
 )");
 enum class ShaderBuiltin : uint32_t
 {
@@ -780,6 +784,7 @@ enum class ShaderBuiltin : uint32_t
   BaseVertex,
   BaseInstance,
   DrawIndex,
+  StencilReference,
   Count,
 };