1 files changed, 24 insertions, 0 deletions
diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index bca6a32c956..1ccbccc8bbb 100644
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -163,6 +163,22 @@ typedef enum {
 } nir_depth_layout;
 
 /**
+ * Enum keeping track of how a variable was declared.
+ */
+typedef enum {
+   /**
+    * Normal declaration.
+    */
+   nir_var_declared_normally = 0,
+
+   /**
+    * Variable is implicitly generated by the compiler and should not be
+    * visible via the API.
+    */
+   nir_var_hidden,
+} nir_var_declaration_type;
+
+/**
  * Either a uniform, global variable, shader input, or shader output. Based on
  * ir_variable - it should be easy to translate between the two.
  */
@@ -350,6 +366,14 @@ typedef struct nir_variable {
       unsigned xfb_stride;
 
       /**
+       * How the variable was declared.  See nir_var_declaration_type.
+       *
+       * This is used to detect variables generated by the compiler, so should
+       * not be visible via the API.
+       */
+      unsigned how_declared:2;
+
+      /**
        * ARB_shader_image_load_store qualifiers.
        */
       struct {