/*
 * MIT License
 * Author: Mark Allyn
 *
 * graticule.frag — single-colour fragment shader shared by the
 * incandescent bearing graticule and the yellow cursor overlay.
 * The colour (and alpha) is set via a uniform so one shader serves both.
 */
#version 330 core

out vec4 fragColor;

uniform vec4 u_color;   // RGBA; use alpha < 1 for soft edges if needed

void main() {
    fragColor = u_color;
}