diff --git a/src/mesa/main/formats.c b/src/mesa/main/formats.c
index f6c399ede58..774790dce67 100644
--- a/src/mesa/main/formats.c
+++ b/src/mesa/main/formats.c
@@ -2012,6 +2012,15 @@ _mesa_is_format_signed(mesa_format format)
    }
 }
 
+/**
+ * Is the given format an integer format?
+ */
+GLboolean
+_mesa_is_format_integer(mesa_format format)
+{
+   const struct gl_format_info *info = _mesa_get_format_info(format);
+   return (info->DataType == GL_INT || info->DataType == GL_UNSIGNED_INT);
+}
 
 /**
  * Return color encoding for given format.
diff --git a/src/mesa/main/formats.h b/src/mesa/main/formats.h
index 8c8e95f329b..64784e4947a 100644
--- a/src/mesa/main/formats.h
+++ b/src/mesa/main/formats.h
@@ -682,6 +682,9 @@ _mesa_is_format_unsigned(mesa_format format);
 extern GLboolean
 _mesa_is_format_signed(mesa_format format);
 
+extern GLboolean
+_mesa_is_format_integer(mesa_format format);
+
 extern GLenum
 _mesa_get_format_color_encoding(mesa_format format);