Lucas de Vries
69 lines
2.1 KiB
Plaintext
69 lines
2.1 KiB
Plaintext
const int nLightCount = 2;
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uniform sampler2D diffuseRGB, normalMap;
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uniform vec3 colors[2];
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uniform float gloss;
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varying vec3 normal, binormal, tangent;
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varying vec3 npos;
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varying vec2 uv;
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vec3 light[nLightCount];
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float dist[nLightCount];
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void main() {
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vec3 color = gl_FrontMaterial.diffuse.rgb;
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vec2 samp = texture2D(diffuseRGB, uv.xy).rg;
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vec3 texSamp = mix(colors[0], colors[1], samp.g) * samp.r;
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vec3 matspec = gl_FrontMaterial.specular.rgb;
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float shininess = mix(gl_FrontMaterial.shininess, gloss, samp.g);
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vec3 normMap = (texture2D(normalMap, uv.xy).xyz * 2.0) - vec3(1.0);
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float ao = length(normMap) - 0.5;
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vec3 n = normalize(normal) * normMap.z;
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n += normalize(binormal) * normMap.x;
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n += normalize(tangent) * normMap.y;
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n = normalize(n);
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vec3 v = normalize(npos);
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if(nLightCount > 0) {
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const int i = 0;
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light[i] = gl_LightSource[i].position.xyz + npos;
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dist[i] = length(light[i]);
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light[i] = light[i] / dist[i];
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}
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if(nLightCount > 1) {
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const int i = 1;
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light[i] = gl_LightSource[i].position.xyz + npos;
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dist[i] = length(light[i]);
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light[i] = light[i] / dist[i];
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}
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vec3 diffuse = gl_LightModel.ambient.rgb * gl_FrontMaterial.ambient.rgb * (0.5 + ao);
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vec3 specular = vec3(0.0);
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if(nLightCount > 0) {
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const int i = 0;
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float falloff = 1.0 / (1.0 + (gl_LightSource[i].quadraticAttenuation * dist[i] * dist[i]));
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float intensity = max(0.0, dot(n, light[i])) * falloff;
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diffuse += gl_LightSource[i].diffuse.rgb * intensity;
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vec3 r = -reflect(light[i], n);
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specular += gl_LightSource[i].specular.rgb * (pow(max(0.0, dot(r, v)), shininess) * intensity);
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}
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if(nLightCount > 1) {
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const int i = 1;
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float falloff = 1.0 / (1.0 + (gl_LightSource[i].quadraticAttenuation * dist[i] * dist[i]));
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float intensity = max(0.0, dot(n, light[i])) * falloff;
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diffuse += gl_LightSource[i].diffuse.rgb * intensity;
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vec3 r = -reflect(light[i], n);
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specular += gl_LightSource[i].specular.rgb * (pow(max(0.0, dot(r, v)), shininess) * intensity);
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}
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gl_FragColor.rgb = (diffuse * color * texSamp.rgb) + (specular * matspec);
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gl_FragColor.a = 1.0;
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}
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