shaders/gpos.fs

   1 out vec4 FragColor;
   2
   3 uniform vec3 uCamera;
   4
   5 in vec4 aColour;
   6 in vec2 aUv;
   7 in vec3 aNorm;
   8 in vec3 aCo;
   9
  10 #include "common_world.glsl"
  11
  12 // Water blending
  13 // ==============
  14
  15 float water_depth( vec3 pos, vec3 halfview )
  16 {
  17    vec3 pnorm = g_water_plane.xyz;
  18    float pdist = g_water_plane.w;
  19
  20    float d = dot( pnorm, halfview );
  21    float t = dot((pnorm*pdist - pos), pnorm) / d;
  22    return t * g_water_fog;
  23 }
  24
  25 void main()
  26 {
  27    vec3 halfview = normalize( uCamera - aCo );
  28    vec3 world_pos = vec3( aCo.y, aCo.x, aCo.z );
  29    FragColor = vec4( world_pos, water_depth( aCo, halfview ) );
  30 }