100 lines
2.5 KiB
GLSL
Executable file
100 lines
2.5 KiB
GLSL
Executable file
#version 330 core
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out vec4 FragColor;
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struct Light {
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vec3 direction;
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vec3 color;
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};
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struct PLight {
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vec3 position;
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vec3 color;
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float constant;
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float linear;
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float quadratic;
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};
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struct SLight {
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vec3 position;
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vec3 direction;
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float cutOff;
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float outerCutOff;
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};
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uniform vec3 objectColor;
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uniform vec3 lightColor;
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uniform vec3 lightPos;
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uniform vec3 viewPos;
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uniform sampler2D diffuseTex;
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uniform sampler2D specTex;
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uniform float shininess;
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uniform Light light;
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uniform PLight plight;
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uniform SLight slight;
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in vec3 Normal;
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in vec3 FragPos;
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in vec2 TexCoords;
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float near = 0.1;
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float far = 100.0;
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float LinearizeDepth(float depth)
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{
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float z = depth * 2.0 - 1.0; // back to NDC
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return (2.0 * near * far) / (far + near - z * (far - near));
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}
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// void main()
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// {
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// float depth = LinearizeDepth(gl_FragCoord.z) / far; // divide by far for demonstration
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// FragColor = vec4(vec3(depth), 1.0);
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// }
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void main()
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{
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//vec3 dirDir = normalize(-Directional.direction);
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float ambientStrength = 1.f;
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vec3 ambient = ambientStrength * vec3(texture(diffuseTex, TexCoords));
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// vec3 norm = normalize(Normal);
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// vec3 diffuse;
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// Directional
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//vec3 lightDir = normalize(-light.direction);
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// Point
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// float distance = length(plight.position - FragPos);
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// float attenuation = 1.f / (plight.constant + plight.linear * distance + plight.quadratic * (distance * distance));
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// vec3 lightDir = normalize(lightPos - FragPos);
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// float diff = max(dot(norm, lightDir), 0.f);
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//diffuse = diff * lightColor * vec3(texture(diffuseTex, TexCoords)) * attenuation;
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// Spot
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// lightDir = normalize(slight.position - FragPos);
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// float theta = dot(lightDir, normalize(-slight.direction));
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// float epsilon = slight.cutOff - slight.outerCutOff;
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// float intensity = clamp((theta - slight.outerCutOff) / epsilon, 0.f, 1.f);
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// diffuse = lightColor * diff * vec3(texture(diffuseTex, TexCoords)) * intensity;
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// float specularStrength = 0.5f;
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// vec3 viewDir = normalize(viewPos - FragPos);
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// vec3 reflectDir = reflect(-lightDir, norm);
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// float spec = pow(max(dot(viewDir, reflectDir), 0.f), 32);
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// vec3 specular = specularStrength * spec * lightColor * texture(specTex, TexCoords).rgb;
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// if(texture(specTex, TexCoords).r < 0.1f)
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// discard;
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//vec3 result = (ambient + diffuse + specular) * objectColor;
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FragColor = vec4(ambient, 1.f);
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}
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