49 lines
No EOL
1.4 KiB
GLSL
49 lines
No EOL
1.4 KiB
GLSL
#version 120
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varying vec3 vertex;
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varying vec3 normal;
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varying vec3 lightDirection;
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uniform vec3 lightColor;
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uniform vec3 lightPosition;
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uniform float materialKind;
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uniform vec3 materialColor;
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void main()
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{
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vec3 Eye = normalize(-vertex);
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vec3 Reflected = normalize(reflect( -lightPosition, normal));
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vec3 IAmbient = vec3(0.05f);
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if (materialKind == 6) {
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// sun: shines by itself
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gl_FragColor = vec4(materialColor, 1.0);
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return;
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}
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// TODO: add noise texture
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vec3 IDiffuse = vec3(materialColor) * lightColor * max(dot(normal, lightDirection), 0.0);
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// TODO make instensity/exponent as parameter
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//vec3 ISpecular = lightColor * 5.0 * pow(max(dot(Reflected, Eye), 0.0), 2.0);
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vec3 ISpecular = lightColor * pow(max(dot(Reflected, Eye), 0.0), 2.0);
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if (dot(lightDirection, normal) <= 0.0) {
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ISpecular = vec3(0.0, 0.0, 0.0);
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}
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// p: point of the fragment on the surface
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//vec3 v_eye = normalize(pos_eye - pos_space); // point from p to eye
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//vec3 v_sun = normalize(sun_light_dir); // points from p to the sun
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//float specular = spec_int * pow(
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// clamp(dot((v_eye + v_sun)/2.0, normal), 0.0, 1.0),
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// 2.0*specular_exponent);
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//ISpecular = vec3(1.0, 0.0, 0.0) * specular;
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//gl_FragColor = vec4(ISpecular, 1.0);
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gl_FragColor = vec4((IAmbient + IDiffuse) + ISpecular, 1.0);
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//gl_FragColor = vec4(0.5+0.5*normal, 1.0);
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} |