/usr/share/glmark2/shaders/light-advanced.frag is in glmark2-data 2014.03+git20150611.fa71af2d-0ubuntu4.
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 | varying vec3 Normal;
void main(void)
{
const vec4 LightSourceAmbient = vec4(0.1, 0.1, 0.1, 1.0);
const vec4 LightSourceDiffuse = vec4(0.8, 0.8, 0.8, 1.0);
const vec4 LightSourceSpecular = vec4(0.8, 0.8, 0.8, 1.0);
const vec4 MaterialAmbient = vec4(1.0, 1.0, 1.0, 1.0);
const vec4 MaterialDiffuse = vec4(0.0, 0.0, 1.0, 1.0);
const vec4 MaterialSpecular = vec4(1.0, 1.0, 1.0, 1.0);
const float MaterialShininess = 100.0;
vec3 N = normalize(Normal);
// In the lighting model we are using here (Blinn-Phong with light at
// infinity, viewer at infinity), the light position/direction and the
// half vector is constant for the all the fragments.
vec3 L = normalize(LightSourcePosition.xyz);
vec3 H = normalize(LightSourceHalfVector);
// Calculate the diffuse color according to Lambertian reflectance
vec4 diffuse = MaterialDiffuse * LightSourceDiffuse * max(dot(N, L), 0.0);
// Calculate the ambient color
vec4 ambient = MaterialAmbient * LightSourceAmbient;
// Calculate the specular color according to the Blinn-Phong model
vec4 specular = MaterialSpecular * LightSourceSpecular *
pow(max(dot(N,H), 0.0), MaterialShininess);
// Calculate the final color
gl_FragColor = vec4((ambient + specular + diffuse).xyz, 1.0);
}
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