annotate sdr/vein.p.glsl @ 4:c6a6a64df6de
normalmap
| author |
John Tsiombikas <nuclear@member.fsf.org> |
| date |
Sun, 22 Apr 2012 05:20:03 +0300 |
| parents |
94d4c60af435 |
| children |
aab0d8ea21cd |
| rev |
line source |
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nuclear@4
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1 uniform sampler2D tex_norm;
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2
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3 varying vec3 vpos, vnorm;
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4 varying vec3 ldir, vdir;
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5
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6 void main()
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7 {
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8 vec3 tnorm = texture2D(tex_norm, gl_TexCoord[0].st).xyz * 2.0 - 1.0;
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9 vec3 n = normalize(tnorm);
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10 vec3 v = normalize(vdir);
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11 vec3 l = v;//normalize(ldir);
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12 vec3 h = normalize(l + v);
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13
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14 vec3 diff = vec3(0.8, 0.25, 0.2) * (1.0 - max(dot(l, n), 0.0));
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15 vec3 spec = 0.5 * vec3(0.9, 0.4, 0.3) * pow(max(dot(h, n), 0.0), 10.0);
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16
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17 gl_FragColor = vec4(diff + spec, 1.0);
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18 }
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