Paul Leroy
70 lines
1.8 KiB
GLSL
70 lines
1.8 KiB
GLSL
#version 330
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// uniforms
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uniform vec4 lightPosition; // should be in the eye space
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uniform vec4 lightAmbient; // light ambient color
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uniform vec4 lightDiffuse; // light diffuse color
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uniform vec4 lightSpecular; // light specular color
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uniform vec4 materialAmbient; // material ambient color
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uniform vec4 materialDiffuse; // material diffuse color
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uniform vec4 materialSpecular; // material specular color
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uniform float materialShininess; // material specular shininess
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uniform bool drawLines;
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uniform bool drawPoints;
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uniform vec3 objectColor;
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// in
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in vec3 esVertex;
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in vec3 esNormal;
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// out
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out vec4 fragColor;
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void main()
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{
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vec3 fixedLightPosition;
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vec3 lightColor;
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fixedLightPosition = vec3(1., 1., 0.);
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lightColor = vec3(0.8, 0.8, 0.8);
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//Ambient lighting
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float ambientStrength = 0.5;
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vec3 ambient = ambientStrength * lightColor;
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// Diffuse lighting
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vec3 norm = normalize(esNormal);
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vec3 lightDir = normalize(fixedLightPosition - esVertex);
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float diff = max(dot(norm, lightDir), 0.0);
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vec3 diffuse = diff * lightColor;
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// Specular lighting
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float specularStrength = 0.5;
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vec3 viewPos = vec3(0, 0, 0);
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vec3 viewDir = normalize(viewPos - esVertex);
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vec3 reflectDir = reflect(-lightDir, norm);
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float spec = pow(max(dot(viewDir, reflectDir), 0.0), 32);
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vec3 specular = specularStrength * spec * lightColor;
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//vec3 result = (ambient + diffuse + specular) * objectColor;
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//vec3 result = (ambient + diffuse) * objectColor;
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vec3 result = objectColor;
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if (drawPoints)
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{
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fragColor = vec4(result * vec3(0.8, 0.8, 0.8), 1.);
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}
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else
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{
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if (drawLines)
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{
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fragColor = vec4(result * vec3(0.8, 0.8, 0.8), 1.);
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}
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else
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{
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fragColor = vec4(result, 1.);
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}
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}
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}
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