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386 jab 1 
#version 120
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#extension GL_EXT_gpu_shader4 : enable
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varying vec3 normal;
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varying float eig;
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varying float eig2;
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uniform float eig_max;
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uniform float eig_max2;
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uniform bool do_highlight;
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uniform bool do_diffuse;
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const vec3 light_dir = vec3(0,0,1);
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void main()
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{
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  float dot_ln = dot(light_dir, normal);
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  float eig_norm = eig/eig_max;
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  float stripe_signal = 100 * eig_norm;
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  vec4 stripe_col = abs(stripe_signal) < 3.14 ? vec4(1,1,0,0) : vec4(.1,.1,.1,0);
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  gl_FragColor = eig_norm * vec4(-1,0,1,0);
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  if(do_diffuse)   gl_FragColor *= dot_ln;
394 jab 23 
  if(do_highlight) gl_FragColor += dot_ln*dot_ln*dot_ln*dot_ln*dot_ln*dot_ln*dot_ln*vec4(.5,.5,.5,0);
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  gl_FragColor += stripe_col * smoothstep(0.8,1.0,cos(stripe_signal));
386 jab 25 
}
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/*/
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void main()
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{
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 float dot_ln = dot(light_dir, normal);
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  float eig_norm = eig/eig_max;
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  float stripe_signal = 100 * eig_norm;
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  float eig_norm2 = eig2/eig_max2;
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  float stripe_signal2 = 60 * eig_norm2;
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  bool a = cos(stripe_signal)>0;
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  bool b = cos(stripe_signal2)>0;
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  gl_FragColor = vec4(.1,0.6,.2,0) * ((a && b || !a && !b)?1.0:0.0);
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  if(do_diffuse)   gl_FragColor *= dot_ln;
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}*/