54 lines
1.3 KiB
Plaintext
54 lines
1.3 KiB
Plaintext
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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 int activeLightCount;
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varying vec3 camVec;
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varying vec3 lightVec[8];
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void main()
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{
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vec3 lVec;
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vec3 cVec = normalize(camVec);
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float parallax = 0.035;
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//double refinement
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float height = texture2D(NormalMap, texCoord.xy).a;
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float offset = parallax * (2.0 * height - 1.0);
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vec2 parallaxTexCoord = texCoord.xy + offset * cVec.xy;
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height += texture2D(NormalMap, parallaxTexCoord).a;
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offset = parallax * (height - 1.0);
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parallaxTexCoord = texCoord.xy + offset * cVec.xy;
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//go-go-go
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vec3 TexRGB = texture2D(Texture, parallaxTexCoord).xyz;
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vec3 norm;
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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, parallaxTexCoord).xyz * 2.0 - 1.0;
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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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gl_FragColor = vec4(0.0,0.0,0.0,1.0);
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for (int i=0;i<activeLightCount;i++)
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{
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vec3 lVec = normalize(lightVec[i]);
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vec4 ambient = gl_LightSource[i].ambient;
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vec4 diffuse = gl_FrontMaterial.diffuse * gl_LightSource[i].diffuse * max( dot(lVec,norm),0.0);
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vec4 specular = gl_LightSource[i].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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}
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