40 lines
1 KiB
Text
40 lines
1 KiB
Text
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varying vec3 q_tilde;
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varying vec3 inv_T_square_v;
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varying vec3 inv_T_square_e_c;
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varying vec4 e_clip;
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varying vec4 V_clip;
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varying vec3 h0;
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varying vec3 l0;
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varying vec3 h1;
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varying vec3 l1;
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varying vec4 a;
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void main()
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{
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float q_tilde_squared_length = dot(q_tilde.xy,q_tilde.xy);
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if (q_tilde_squared_length > 1.0)
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discard;
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float lambda = 1.0/(1.0+q_tilde.z*sqrt(1.0-q_tilde_squared_length));
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vec3 n = normalize(inv_T_square_e_c + lambda * inv_T_square_v);
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gl_FragColor = a;
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float ldotn = dot(n,l0);
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if (ldotn > 0.0) {
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gl_FragColor +=
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ldotn*gl_FrontLightProduct[0].diffuse+
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pow(max(dot(n,normalize(h0)), 0.0), gl_FrontMaterial.shininess)*
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gl_FrontLightProduct[0].specular;
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}
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/*
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ldotn = dot(n,l1);
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if (ldotn > 0.0) {
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gl_FragColor +=
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ldotn*gl_FrontLightProduct[1].diffuse +
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pow(max(dot(n,h1), 0.0), gl_FrontMaterial.shininess)*
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gl_FrontLightProduct[1].specular;
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}
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*/
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vec4 p = e_clip+lambda*(V_clip - e_clip);
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gl_FragDepth = 0.5*p.z/p.w+0.5;
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}
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