35 lines
1.3 KiB
Plaintext
35 lines
1.3 KiB
Plaintext
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// -- Per Pixel lighting, test 3 --
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uniform sampler2D diffuseTexture, specularTexture, normalTexture;
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varying mediump vec2 texCoord;
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varying mediump vec3 lightVec;
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varying mediump vec3 halfVec;
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uniform lowp vec3 material_ambient, material_diffuse, material_specular;
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void main()
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{
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// compute diffuse lighting
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mediump vec4 diffuseMaterial = texture2D(diffuseTexture, texCoord);
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/*
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// lookup normal from normal map, move from [0,1] to [-1, 1] range, normalize
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mediump vec3 normal = normalize(2.0 * texture2D(normalTexture,texCoord).rgb - 1.0);
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mediump float lamberFactor= max (dot (lightVec, normal), 0.0);
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// Add ambient light and alpha component from diffuse texture map
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gl_FragColor = vec4(material_ambient, diffuseMaterial.w);
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// compute specular lighting
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mediump vec3 specularLight = vec3(texture2D(specularTexture, texCoord)); // Specular value comes from a texture
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mediump float shininess = pow (max (dot (halfVec, normal), 0.0), 2.0);
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// Add diffuse light
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gl_FragColor += vec4(vec3(diffuseMaterial) * material_diffuse * lamberFactor, 0.0);
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// Add specular light
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gl_FragColor += vec4(material_specular * specularLight * shininess, 0.0);
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*/
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//gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0);
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gl_FragColor = diffuseMaterial;
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}
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