space-crush/space-crush-app/resources/shader/text.frag

#version 450 core

in FragmentData {
    vec2 tex_coord;
    vec4 color;
} data;

uniform sampler2D tex;

out vec4 color;

void main() {
    float alpha = texture(tex, data.tex_coord).r;

    if (alpha <= 0.0) {
        discard;
    }

    color = data.color * vec4(1.0, 1.0, 1.0, alpha);
}