glsl: Add comments to clarify the types of comparison binops.

diff --git a/src/glsl/ir.h b/src/glsl/ir.h
index 909f8242a7828f6ebb837ce8faf63f2ccf57f385..240e7cd49affd0515060de0b2fa5b43b9a1d00ba 100644 (file)
--- a/src/glsl/ir.h
+++ b/src/glsl/ir.h
@@ -719,7 +719,8 @@ enum ir_expression_operation {
    ir_binop_mod,
 
    /**
-    * \name Binary comparison operators
+    * \name Binary comparison operators which return a boolean vector.
+    * The type of both operands must be equal.
     */
    /*@{*/
    ir_binop_less,