/usr/share/games/pink-pony/GLSL/heart.frag is in pink-pony-data 1.4.1-2.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | uniform vec3 hemi_pole;
uniform vec4 hemi_sky;
uniform vec4 hemi_ground;
varying vec3 light;
varying vec3 normal;
varying vec3 eye;
vec4 basecolor()
{
return vec4(1,0,0,1);
}
vec4 diffuse (vec3 l, vec3 n, vec3 v, int light_no)
{
vec4 color = gl_LightSource[light_no].diffuse;
return color * max(0.0, dot(l, n)) * 1.3;
}
vec4 specular (vec3 l, vec3 n, vec3 v, int light_no)
{
vec4 color = gl_LightSource[light_no].specular;
vec3 h = normalize(l + v);
return color * smoothstep(0.45, 0.55, pow(max(0.0, dot(h, n)), 10.0));
}
vec4 hemisphere (vec3 n)
{
vec3 p = gl_NormalMatrix * hemi_pole;
float cos_phi = dot(n, p);
float i = 0.5 + (0.5 * cos_phi);
return mix(hemi_ground, hemi_sky, i);
}
void main (void)
{
vec3 my_normal = normalize(normal);
vec3 my_eye = normalize(eye);
vec4 hemi = hemisphere (my_normal);
vec4 diff = diffuse(light, my_normal, -my_eye, 0);
vec4 col = hemi + diff;
gl_FragColor = basecolor() * col + specular(light, my_normal, -my_eye, 0);
}
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