6 vec3 base3 = vec3(0.99, 0.96, 0.89);
7 vec3 base2 = vec3(0.92, 0.91, 0.83);
8 vec3 base00 = vec3(0.40, 0.48, 0.51);
9 vec3 ec_normal = normalize(cross(dFdx(ec_pos), dFdy(ec_pos)));
10 float a = dot(ec_normal, vec3(0.0, 0.0, 1.0));
11 float b = dot(ec_normal, vec3(-0.57, -0.57, 0.57));
13 gl_FragColor = vec4((a*base2 + (1-a)*base00)*0.5 +
14 (b*base3 + (1-b)*base00)*0.5, 1.0);