/usr/share/libavogadro/shaders/gooch.frag is in avogadro-data 1.1.1-0ubuntu2.
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 | //
// Fragment shader for Gooch shading
//
// Author: Randi Rost
//
// Copyright (c) 2002-2005 3Dlabs Inc. Ltd.
//
// See 3Dlabs-License.txt for license information
//
uniform vec3 SurfaceColor; // (0.75, 0.75, 0.75)
uniform vec3 WarmColor; // (0.6, 0.6, 0.0)
uniform vec3 CoolColor; // (0.0, 0.0, 0.6)
uniform float DiffuseWarm; // 0.45
uniform float DiffuseCool; // 0.45
varying float NdotL;
varying vec3 ReflectVec;
varying vec3 ViewVec;
void main()
{
vec3 kcool = min(CoolColor + DiffuseCool * SurfaceColor, 1.0);
vec3 kwarm = min(WarmColor + DiffuseWarm * SurfaceColor, 1.0);
vec3 kfinal = mix(kcool, kwarm, NdotL);
vec3 nreflect = normalize(ReflectVec);
vec3 nview = normalize(ViewVec);
float spec = max(dot(nreflect, nview), 0.0);
spec = pow(spec, 32.0);
gl_FragColor = vec4(min(kfinal + spec, 1.0), 1.0);
}
|