src/glsl/builtins/ir/atan.ir

   1 ((function atan
   2    (signature float
   3      (parameters
   4        (declare (in) float y_over_x))
   5      ((return (call asin ((expression float *
   6                            (var_ref y_over_x)
   7                            (expression float rsq
   8                             (expression float +
   9                              (expression float *
  10                               (var_ref y_over_x)
  11                               (var_ref y_over_x))
  12                              (constant float (1.0))))))))))
  13
  14    (signature vec2
  15      (parameters
  16        (declare (in) vec2 y_over_x))
  17      ((return (call asin ((expression vec2 *
  18                            (var_ref y_over_x)
  19                            (expression vec2 rsq
  20                             (expression vec2 +
  21                              (expression vec2 *
  22                               (var_ref y_over_x)
  23                               (var_ref y_over_x))
  24                              (constant float (1.0))))))))))
  25
  26    (signature vec3
  27      (parameters
  28        (declare (in) vec3 y_over_x))
  29      ((return (call asin ((expression vec3 *
  30                            (var_ref y_over_x)
  31                            (expression vec3 rsq
  32                             (expression vec3 +
  33                              (expression vec3 *
  34                               (var_ref y_over_x)
  35                               (var_ref y_over_x))
  36                              (constant float (1.0))))))))))
  37
  38    (signature vec4
  39      (parameters
  40        (declare (in) vec4 y_over_x))
  41      ((return (call asin ((expression vec4 *
  42                            (var_ref y_over_x)
  43                            (expression vec4 rsq
  44                             (expression vec4 +
  45                              (expression vec4 *
  46                               (var_ref y_over_x)
  47                               (var_ref y_over_x))
  48                              (constant float (1.0))))))))))
  49
  50   (signature float
  51     (parameters
  52       (declare (in ) float y)
  53       (declare (in ) float x)
  54     )
  55     (
  56       (declare () float r)
  57       (if (expression bool >
  58            (expression float abs (var_ref x))
  59            (expression float * (constant float (1.0e-8)) (expression float abs (var_ref y)))) (
  60         (assign (x) (var_ref r) (call atan ((expression float / (var_ref y) (var_ref x)))))
  61         (if (expression bool < (var_ref x) (constant float (0.000000)) ) (
  62           (if (expression bool >= (var_ref y) (constant float (0.000000)) )
  63               ((assign (x) (var_ref r) (expression float + (var_ref r) (constant float (3.141593)))))
  64               ((assign (x) (var_ref r) (expression float - (var_ref r) (constant float (3.141593))))))
  65         )
  66         (
  67         ))
  68       )
  69       (
  70         (declare () float sgn)
  71         (assign (x) (var_ref sgn) (expression float sign (var_ref y)))
  72         (assign (x) (var_ref r) (expression float * (var_ref sgn) (constant float (1.5707965))))
  73       ))
  74
  75       (return (var_ref r) )
  76     ))
  77
  78
  79
  80    (signature vec2
  81      (parameters
  82        (declare (in) vec2 y)
  83        (declare (in) vec2 x))
  84      ((declare () vec2 r)
  85       (assign (x) (var_ref r)
  86               (call atan ((swiz x (var_ref y))
  87                           (swiz x (var_ref x)))))
  88       (assign (y) (var_ref r)
  89               (call atan ((swiz y (var_ref y))
  90                           (swiz y (var_ref x)))))
  91       (return (var_ref r))))
  92
  93    (signature vec3
  94      (parameters
  95        (declare (in) vec3 y)
  96        (declare (in) vec3 x))
  97      ((declare () vec3 r)
  98       (assign (x) (var_ref r)
  99               (call atan ((swiz x (var_ref y))
 100                           (swiz x (var_ref x)))))
 101       (assign (y) (var_ref r)
 102               (call atan ((swiz y (var_ref y))
 103                           (swiz y (var_ref x)))))
 104       (assign (z) (var_ref r)
 105               (call atan ((swiz z (var_ref y))
 106                           (swiz z (var_ref x)))))
 107       (return (var_ref r))))
 108
 109    (signature vec4
 110      (parameters
 111        (declare (in) vec4 y)
 112        (declare (in) vec4 x))
 113      ((declare () vec4 r)
 114       (assign (x) (var_ref r)
 115               (call atan ((swiz x (var_ref y))
 116                           (swiz x (var_ref x)))))
 117       (assign (y) (var_ref r)
 118               (call atan ((swiz y (var_ref y))
 119                           (swiz y (var_ref x)))))
 120       (assign (z) (var_ref r)
 121               (call atan ((swiz z (var_ref y))
 122                           (swiz z (var_ref x)))))
 123       (assign (w) (var_ref r)
 124               (call atan ((swiz w (var_ref y))
 125                           (swiz w (var_ref x)))))
 126       (return (var_ref r)))))
 127
 128 ))