I got these objects with two sprites, a normal one and another one with a shader that let me do this silhouette effect:
When ever two of this overlapp, tho, they do this:
…and I saw some solutions, like adding this sprites in a same canvas group and changing the oppacity there, but I don’t really know how to do this, especially if the objects come from diferents scenes. I also thought about modifying the shader, but I don’t have enough expirience.
Heres the shader, got it from a video tutorial
shader_type canvas_item;
uniform sampler2D screen_texture : hint_screen_texture, filter_nearest;
uniform vec4 silhouette_color : source_color = vec4(0.0, 0.0, 0.0, 0.5); // Default: Semi-transparent black
uniform float color_tolerance : hint_range(0.0, 0.1) = 0.01;
void fragment() {
vec4 sprite_color = texture(TEXTURE, UV);
if (sprite_color.a <= 0.01) {
discard;
}
vec4 screen_color = texture(screen_texture, SCREEN_UV);
bool colors_match = all(lessThan(abs(sprite_color - screen_color), vec4(color_tolerance)));
if (colors_match) {
COLOR = sprite_color;
} else {
COLOR = vec4(silhouette_color.rgb, silhouette_color.a * sprite_color.a);
}
}