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 in vec3 aWorldCo;
  10
  11 #include "common_world.glsl"
  12
  13 // Water blending
  14 // ==============
  15
  16 float water_depth( vec3 pos, vec3 halfview )
  17 {
  18    vec3 pnorm = g_water_plane.xyz;
  19    float pdist = g_water_plane.w;
  20
  21    float d = dot( pnorm, halfview );
  22    float t = dot((pnorm*pdist - pos), pnorm) / d;
  23    return t * g_water_fog;
  24 }
  25
  26 void main()
  27 {
  28    vec3 halfview = normalize( uCamera - aCo );
  29    vec3 world_pos = vec3( aCo.y, aCo.x, aCo.z );
  30    FragColor = vec4( world_pos, water_depth( aCo, halfview ) );
  31 }