52 lines
1.3 KiB
GLSL
52 lines
1.3 KiB
GLSL
#version 330 core
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// material
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uniform vec3 materialKd;
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uniform vec3 materialKs;
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uniform float materialNs;
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uniform int nbDirLights;
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uniform vec3 dirLights[8];
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uniform int nbPointLights;
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uniform vec3 pointLights[8];
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// texture
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uniform sampler2D baseTexture;
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// fragment
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in vec3 varNormal;
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in vec2 varTexCoord;
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in vec3 lightDirInView[4];
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in vec3 halfVecInView[4];
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// resultat
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layout(location = 0)out vec4 outColor;
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// --------------------
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vec3 computeLight(in vec3 kd, in vec3 ks, in float ns, in vec3 color, in vec3 normal, in vec3 lightDir, in vec3 halfVec){
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float diffuse = 0;
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float specular = 0;
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diffuse = dot(normal, lightDir);
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diffuse = diffuse < 0 ? 0 : diffuse;
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specular = dot(halfVec, normal);
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specular = specular < 0 ? 0 : specular;
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return color*diffuse*(kd+ks*pow(specular, ns));
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}
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void main(void) {
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int i;
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vec3 kd = vec3(texture2D(baseTexture, varTexCoord));
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vec3 light = 0.1f*kd;
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for(i=0; i<nbDirLights && i<4; ++i)
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light += computeLight(kd, materialKs, materialNs, dirLights[i*2+1], varNormal, lightDirInView[i], halfVecInView[i]);
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for(i=0; i<nbPointLights && i+nbDirLights<4; ++i)
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light += computeLight(kd, materialKs, materialNs, pointLights[i*2+1], varNormal, lightDirInView[nbDirLights+i], halfVecInView[nbDirLights+i]);
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outColor = vec4(light, 1);
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}
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