39 lines
856 B
Plaintext
39 lines
856 B
Plaintext
uniform sampler2D Texture;
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uniform sampler2D NormalMap;
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uniform int NormalMapExists;
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varying vec2 texCoord;
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varying vec3 camVec;
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varying vec3 lightVec;
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void main()
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{
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vec3 norm;
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vec4 ambient;
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vec4 diffuse;
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vec4 specular;
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vec3 TexRGB = texture2D(Texture, texCoord.st).rgb;
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vec3 cVec = normalize(camVec);
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if (NormalMapExists == 0)
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{
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norm = vec3(0.0,0.0,1.0);
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}
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else
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{
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norm = (texture2D(NormalMap, texCoord.st).rgb - 0.5) * 2.0;
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}
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float shineFactor = 15.0 * pow(max(dot(cVec, norm),0.0),gl_FrontMaterial.shininess) / (129.0 - gl_FrontMaterial.shininess);
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ambient = gl_LightSource[0].ambient;
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diffuse = gl_FrontMaterial.diffuse * gl_LightSource[0].diffuse * max( dot(lightVec,norm),0.0);
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specular = gl_LightSource[0].specular * shineFactor;
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gl_FragColor = vec4(TexRGB,1.0)*ambient+(vec4(TexRGB,1.0)*diffuse+specular);
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}
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