src/glsl/builtins/110_fs/derivatives

   1 ((function dFdx
   2    (signature float
   3      (parameters
   4        (declare (in) float p))
   5      ((return (expression float dFdx (var_ref p)))))
   6
   7    (signature vec2
   8      (parameters
   9        (declare (in) vec2 p))
  10      ((return (expression vec2 dFdx (var_ref p)))))
  11
  12    (signature vec3
  13      (parameters
  14        (declare (in) vec3 p))
  15      ((return (expression vec3 dFdx (var_ref p)))))
  16
  17    (signature vec4
  18      (parameters
  19        (declare (in) vec4 p))
  20      ((return (expression vec4 dFdx (var_ref p)))))
  21  )
  22
  23  (function dFdy
  24    (signature float
  25      (parameters
  26        (declare (in) float p))
  27      ((return (expression float dFdy (var_ref p)))))
  28
  29    (signature vec2
  30      (parameters
  31        (declare (in) vec2 p))
  32      ((return (expression vec2 dFdy (var_ref p)))))
  33
  34    (signature vec3
  35      (parameters
  36        (declare (in) vec3 p))
  37      ((return (expression vec3 dFdy (var_ref p)))))
  38
  39    (signature vec4
  40      (parameters
  41        (declare (in) vec4 p))
  42      ((return (expression vec4 dFdy (var_ref p)))))
  43  )
  44
  45  (function fwidth
  46    (signature float
  47      (parameters
  48        (declare (in) float p))
  49      ((return (expression float +
  50                 (expression float abs (expression float dFdx (var_ref p)))
  51                 (expression float abs (expression float dFdy (var_ref p)))))))
  52
  53    (signature vec2
  54      (parameters
  55        (declare (in) vec2 p))
  56      ((return (expression vec2 +
  57                 (expression vec2 abs (expression vec2 dFdx (var_ref p)))
  58                 (expression vec2 abs (expression vec2 dFdy (var_ref p)))))))
  59
  60    (signature vec3
  61      (parameters
  62        (declare (in) vec3 p))
  63      ((return (expression vec3 +
  64                 (expression vec3 abs (expression vec3 dFdx (var_ref p)))
  65                 (expression vec3 abs (expression vec3 dFdy (var_ref p)))))))
  66
  67    (signature vec4
  68      (parameters
  69        (declare (in) vec4 p))
  70      ((return (expression vec4 +
  71                 (expression vec4 abs (expression vec4 dFdx (var_ref p)))
  72                 (expression vec4 abs (expression vec4 dFdy (var_ref p)))))))
  73 ))