advanced_lighting/4.normal_mapping/shaders/depth.fs


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#version 330 core

in vec4 frag_pos;

uniform vec3 light_pos;
uniform float far;

void
main(void)
{
    float light_distance = length(frag_pos.xyz-light_pos);
    light_distance = light_distance/far;
    gl_FragDepth = light_distance;
}