Outline in Godot 4 without viewports

Godot 4 very simple (but cool) outline shader without viewports

search on github: anunknowperson/Godot4SimpleOutline/

(i can't insert link because youtube doesn't allow it without many videos on channel)

[CrowGamesDev]

shader_type spatial;
render_mode unshaded, cull_front;

uniform bool enable = true;
uniform float outline_thickness = 0.01;
uniform vec4 color : source_color = vec4(0.0);


void vertex() {
if (enable) {
VERTEX += normalize(VERTEX) * outline_thickness;
}
}

void fragment() {
if (enable) {
ALBEDO = color.rgb;
}
}

[ExoCheva]

Is there a way for the outline to change contrast/brightness and thickness depending on whether there is a light

[agriasoaks]

Questions,
1. Will it look odd if we use texture on the mesh?
2. Will the outline break if the shapes are rectangular or ones with edges?

[vojtastruhar]

How does this differ from just using the 'grow' parameter on the material itself? You know - the standard procedure: Cull front face, lighting mode unshaded, albedo black, enable grow and set it to some small number. I guess that's what the shader is doing?

[ElrincondeDave]

Do you know how to access to the shader parameter using code? I tried everything and I can't enable/disabled using code T-T