How to make CanvasModulate not affect certain Sprite2D(s)?

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,
1

Godot Version

v4.4.1.stable.mono.official [49a5bc7b6]

Question

How can I exclude CanvasModulate node’s effect from a certain Sprite2D node?

2

Hi,

Checking Top Level would work but comes with other side effects you probably do not want. See the documentation if needed: CanvasItem — Godot Engine (stable) documentation in English

Another technique would be to add a shader material with a custom shader on the Sprite2D you want to ignore the color modulating on. The shader would just override the fragment’s color for the base texture, like this:

shader_type canvas_item;

void fragment()
{
	COLOR = texture(TEXTURE, UV);
}

That’s the full shader, so it’s nothing much to implement.

Last solution to my knowledge would be using Self Modulate on parent nodes instead of Modulate, and work on some handmade code to spread a color to all children, while ignoring some of them.
Basically, a custom modulate with the ability of ignoring some CanvasItems. That would probably be a bummer to implement, but I have no context on your use case, so I’m sharing that just in case.

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4

(Ignore my earlier response, I tested it and it didn’t work as I wanted)
In my specific case, I need to partially darken certain sprite that out of player vision. CanvasModulate work, but it affect everything, which I don’t want.

5

Could you share a bit more context, probably a screenshot?

6

oh I solved it, sorry for bothering you, I just make the light texture bigger and it worked great.

The only thing I would want to know is if you can point to some resources where I can learn how shader work (Godot and in general).

That’s all. Thank you!

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7

Check out The Book of Shaders. A comprehensive guide to shaders:

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