plane0.frag

#version 450 core

in vec4 intersection_model;  // in model space
out vec4 frag_color;

void main()
{
    // simple but expensive 2: discard pixels not on the plane
    if (intersection_model.w > 0)
        discard;
    frag_color = vec4(101/255.0, 67/255.0, 43/255.0, 1);  // brown
}