git.sesse.net Git - movit/blob - blur_effect.frag

   1 // A simple unidirectional blur.
   2
   3 uniform vec2 PREFIX(pixel_offset);
   4 uniform float PREFIX(weight)[15];
   5
   6 vec4 FUNCNAME(vec2 tc) {
   7         vec4 x = LAST_INPUT(tc);
   8         return
   9                 vec4(PREFIX(weight)[ 0]) * LAST_INPUT(tc - 7.0 * PREFIX(pixel_offset)) +
  10                 vec4(PREFIX(weight)[ 1]) * LAST_INPUT(tc - 6.0 * PREFIX(pixel_offset)) +
  11                 vec4(PREFIX(weight)[ 2]) * LAST_INPUT(tc - 5.0 * PREFIX(pixel_offset)) +
  12                 vec4(PREFIX(weight)[ 3]) * LAST_INPUT(tc - 4.0 * PREFIX(pixel_offset)) +
  13                 vec4(PREFIX(weight)[ 4]) * LAST_INPUT(tc - 3.0 * PREFIX(pixel_offset)) +
  14                 vec4(PREFIX(weight)[ 5]) * LAST_INPUT(tc - 2.0 * PREFIX(pixel_offset)) +
  15                 vec4(PREFIX(weight)[ 6]) * LAST_INPUT(tc -       PREFIX(pixel_offset)) +
  16                 vec4(PREFIX(weight)[ 7]) * LAST_INPUT(tc) +
  17                 vec4(PREFIX(weight)[ 8]) * LAST_INPUT(tc +       PREFIX(pixel_offset)) +
  18                 vec4(PREFIX(weight)[ 9]) * LAST_INPUT(tc + 2.0 * PREFIX(pixel_offset)) +
  19                 vec4(PREFIX(weight)[10]) * LAST_INPUT(tc + 3.0 * PREFIX(pixel_offset)) +
  20                 vec4(PREFIX(weight)[11]) * LAST_INPUT(tc + 4.0 * PREFIX(pixel_offset)) +
  21                 vec4(PREFIX(weight)[12]) * LAST_INPUT(tc + 5.0 * PREFIX(pixel_offset)) +
  22                 vec4(PREFIX(weight)[13]) * LAST_INPUT(tc + 6.0 * PREFIX(pixel_offset)) +
  23                 vec4(PREFIX(weight)[14]) * LAST_INPUT(tc + 7.0 * PREFIX(pixel_offset));
  24 }