33 lines
780 B
GLSL
33 lines
780 B
GLSL
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#version 150 core
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uniform vec4 uColor;
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uniform vec3 uLightDirection;
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uniform vec3 uViewPosition;
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smooth in vec4 ioFragColor;
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in vec3 ioNormal;
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in vec3 ioFragPosition;
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out vec4 outColor;
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void main() {
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// ambient lighting
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float ambient_strength = 0.1;
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vec4 ambient = ambient_strength * ioFragColor;
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// diffuse lighting
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vec3 normal_dir = normalize(ioNormal);
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vec3 light_dir = normalize(uLightDirection);
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float diff = max(dot(normal_dir, light_dir), 0.0);
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vec4 diffuse = diff * ioFragColor;
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// specular lighting
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vec3 view_dir = normalize(uViewPosition - ioFragPosition);
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vec3 halfway_dir = normalize(light_dir + view_dir);
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float spec = pow(max(dot(normal_dir, halfway_dir), 0.0), 32);
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vec4 specular = spec * vec4(0.5);
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outColor = ambient + diffuse + specular;
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}
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