shaders/gpos.fs

   1 out vec4 FragColor;
   2
   3 uniform vec3 uCamera;
   4 uniform vec3 uBoard0;
   5 uniform vec3 uBoard1;
   6
   7 in vec4 aColour;
   8 in vec2 aUv;
   9 in vec3 aNorm;
  10 in vec3 aCo;
  11 in vec3 aWorldCo;
  12
  13 #include "common_world.glsl"
  14
  15 // Water blending
  16 // ==============
  17
  18 float water_depth( vec3 pos, vec3 halfview )
  19 {
  20    vec3 pnorm = g_water_plane.xyz;
  21    float pdist = g_water_plane.w;
  22
  23    float d = dot( pnorm, halfview );
  24    float t = dot((pnorm*pdist - pos), pnorm) / d;
  25    return t * g_water_fog;
  26 }
  27
  28 void main()
  29 {
  30    vec3 halfview = normalize( uCamera - aCo );
  31    vec3 world_pos = vec3( aCo.y, aCo.x, aCo.z );
  32    FragColor = vec4( world_pos, water_depth( aCo, halfview ) );
  33 }