42 lines
1.2 KiB
GLSL
42 lines
1.2 KiB
GLSL
#version 410 core
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uniform sampler2D textureSampler;
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uniform vec3 lightDir;
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uniform vec3 lightPos;
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uniform vec3 cameraPos;
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uniform vec3 objectColor;
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in vec3 fragPos;
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in vec3 interpNormal;
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in vec2 interpTexCoord;
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float near = 0.02f;
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float far = 100.0f;
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float linearizeDepth(float depth)
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{
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return (2.0 * near * far) / (far + near - (depth * 2.0 - 1.0) * (far - near));
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}
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float logisticDepth(float depth, float steepness, float offset)
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{
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float zVal = linearizeDepth(depth);
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return (1 / (1 + exp(-steepness * (zVal - offset))));
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}
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void main()
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{
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float depth = logisticDepth(gl_FragCoord.z, 0.1f, 3.0f);
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vec3 V = normalize(cameraPos-fragPos);
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vec2 modifiedTexCoord = vec2(interpTexCoord.x, 1.0 - interpTexCoord.y); // Poprawka dla tekstur Ziemi, ktore bez tego wyswietlaja sie 'do gory nogami'
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vec3 color = texture2D(textureSampler, modifiedTexCoord).rgb;
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vec3 normal = normalize(interpNormal);
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float diffuse = max(0,dot(normal,normalize(lightDir)));
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vec3 R = reflect(-normalize(lightDir),normal);
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float ambient = 0.2;
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float specular = pow(max(0,dot(R,V)),1000);
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gl_FragColor = vec4(color*(ambient + (1-ambient)*diffuse)+vec3(1)*specular*0.2, 1.0) * (1.0f - depth) + vec4(depth * vec3(0.0f, 0.109f, 0.447f), 1.0f);;
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}
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