Image opacity

This shader uses the color of an image to define the opacity of your object, I used this image to make a zelda-like stamina indicator (cover image)

How to use this:

1. Import an image to the image parameter.

2. Set amount and clip variables.

3. You can set it in code with (YourNode).material.set_shader_parameter(“amount”, float).

Shader code

shader_type canvas_item;

uniform sampler2D image;
uniform float amount: hint_range(0.0, 1.0, 0.01);
uniform bool clip = false;
uniform float clipAtAmount: hint_range(0.01, 1.0, 0.01) = 0.1; //Works if clip = true

void fragment() {
	COLOR = texture(TEXTURE, UV);
	vec4 color = texture(image, UV);
	if(clip)
	{
		if(color.r * amount > clipAtAmount)
		{
			COLOR.a -= 1.0;
		}
	}
	else
	{
		COLOR.a -= color.r * amount;
	}
	
}

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