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nuclear@20
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1 /* MRT assignments
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nuclear@35
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2 * 0 - RGB: position, A: shininess
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nuclear@20
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3 * 1 - RGB: normal
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nuclear@60
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4 * 2 - RGB: diffuse color, A: shininess str.
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nuclear@60
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5 * 3 - unused
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nuclear@20
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6 */
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nuclear@20
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7
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nuclear@20
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8 uniform sampler2D tex_dif, tex_norm;
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nuclear@20
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9
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nuclear@35
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10 varying vec3 pos, norm, tang;
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nuclear@35
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11
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nuclear@35
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12 const float fog_start = 3.0;
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nuclear@35
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13 const float fog_end = 6.0;
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nuclear@16
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14
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nuclear@16
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15 void main()
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nuclear@16
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16 {
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nuclear@20
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17 vec3 n = normalize(norm);
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nuclear@35
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18 vec3 t = normalize(tang);
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nuclear@35
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19 vec3 b = cross(n, t);
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nuclear@35
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20
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nuclear@35
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21 mat3 tbn_mat = mat3(
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nuclear@35
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22 t.x, t.y, t.z,
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nuclear@35
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23 b.x, b.y, b.z,
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nuclear@35
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24 n.x, n.y, n.z);
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nuclear@35
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25
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nuclear@35
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26 // grab normal from the normal map, remap it and transform it to view space
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nuclear@35
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27 n = texture2D(tex_norm, gl_TexCoord[0].st).xyz * 2.0 - 1.0;
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nuclear@37
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28 n = normalize(tbn_mat * n);
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nuclear@35
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29
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nuclear@35
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30 float fog = clamp((fog_end + pos.z) / (fog_end - fog_start), 0.0, 1.0);
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nuclear@20
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31
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nuclear@78
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32 vec3 texel_srgb = texture2D(tex_dif, gl_TexCoord[0].st).xyz;
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nuclear@78
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33 vec3 texel = pow(texel_srgb.xyz, 2.2);
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nuclear@78
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34
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nuclear@78
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35 vec3 diffuse = fog * (gl_FrontMaterial.diffuse.xyz * texel);
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nuclear@35
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36 vec3 spec = fog * gl_FrontMaterial.specular.xyz;
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nuclear@20
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37 float sstr = (spec.x + spec.y + spec.z) / 3.0;
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nuclear@20
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38
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nuclear@34
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39 gl_FragData[0] = vec4(pos, gl_FrontMaterial.shininess);
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nuclear@35
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40 gl_FragData[1] = vec4(n, 0.0);
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nuclear@20
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41 gl_FragData[2] = vec4(diffuse, sstr);
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nuclear@33
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42 //gl_FragData[3] = vec4(0.0, 0.0, 0.0, 0.0);
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nuclear@16
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43 }
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