1((function fwidth 2 (signature float 3 (parameters 4 (declare (in) float p)) 5 ((return (expression float + 6 (expression float abs (expression float dFdx (var_ref p))) 7 (expression float abs (expression float dFdy (var_ref p))))))) 8 9 (signature vec2 10 (parameters 11 (declare (in) vec2 p)) 12 ((return (expression vec2 + 13 (expression vec2 abs (expression vec2 dFdx (var_ref p))) 14 (expression vec2 abs (expression vec2 dFdy (var_ref p))))))) 15 16 (signature vec3 17 (parameters 18 (declare (in) vec3 p)) 19 ((return (expression vec3 + 20 (expression vec3 abs (expression vec3 dFdx (var_ref p))) 21 (expression vec3 abs (expression vec3 dFdy (var_ref p))))))) 22 23 (signature vec4 24 (parameters 25 (declare (in) vec4 p)) 26 ((return (expression vec4 + 27 (expression vec4 abs (expression vec4 dFdx (var_ref p))) 28 (expression vec4 abs (expression vec4 dFdy (var_ref p))))))) 29)) 30