dotfiles_chezmoi/dot_config/ghostty/shaders/custom/probe_invert.glsl

void mainImage(out vec4 fragColor, in vec2 fragCoord) {
    vec2 uv = fragCoord.xy / iResolution.xy;
    vec4 c = texture(iChannel0, uv);
    fragColor = vec4(1.0 - c.rgb, 1.0);
}