diff --git a/builtin_function.cpp b/builtin_function.cpp
index 9cc70ee..d61c2bd 100644
--- a/builtin_function.cpp
+++ b/builtin_function.cpp
@@ -1058,6 +1058,45 @@
    "       (declare (in) vec4 arg0)\n"
    "       (declare (in) vec4 arg1))\n"
    "     ((return (expression vec4 max (var_ref arg0) (var_ref arg1)))))\n"
+   "\n"
+   "   (signature vec2\n"
+   "     (parameters\n"
+   "       (declare (in) vec2  arg0)\n"
+   "       (declare (in) float arg1))\n"
+   "     ((declare () vec2 result)\n"
+   "      (assign (constant bool (1))   (swiz x (var_ref result))\n"
+   "              (expression float max (swiz x (var_ref arg0)) (var_ref arg1)))\n"
+   "      (assign (constant bool (1))   (swiz y (var_ref result))\n"
+   "              (expression float max (swiz y (var_ref arg0)) (var_ref arg1)))\n"
+   "      (return (var_ref result))))\n"
+   "\n"
+   "   (signature vec3\n"
+   "     (parameters\n"
+   "       (declare (in) vec3  arg0)\n"
+   "       (declare (in) float arg1))\n"
+   "     ((declare () vec3 result)\n"
+   "      (assign (constant bool (1))   (swiz x (var_ref result))\n"
+   "              (expression float max (swiz x (var_ref arg0)) (var_ref arg1)))\n"
+   "      (assign (constant bool (1))   (swiz y (var_ref result))\n"
+   "              (expression float max (swiz y (var_ref arg0)) (var_ref arg1)))\n"
+   "      (assign (constant bool (1))   (swiz z (var_ref result))\n"
+   "              (expression float max (swiz z (var_ref arg0)) (var_ref arg1)))\n"
+   "      (return (var_ref result))))\n"
+   "      \n"
+   "   (signature vec4\n"
+   "     (parameters\n"
+   "       (declare (in) vec4  arg0)\n"
+   "       (declare (in) float arg1))\n"
+   "     ((declare () vec4 result)\n"
+   "      (assign (constant bool (1))   (swiz x (var_ref result))\n"
+   "              (expression float max (swiz x (var_ref arg0)) (var_ref arg1)))\n"
+   "      (assign (constant bool (1))   (swiz y (var_ref result))\n"
+   "              (expression float max (swiz y (var_ref arg0)) (var_ref arg1)))\n"
+   "      (assign (constant bool (1))   (swiz z (var_ref result))\n"
+   "              (expression float max (swiz z (var_ref arg0)) (var_ref arg1)))\n"
+   "      (assign (constant bool (1))   (swiz w (var_ref result))\n"
+   "              (expression float max (swiz w (var_ref arg0)) (var_ref arg1)))\n"
+   "      (return (var_ref result))))\n"
    "))\n"
 };