Spray Supervisor

supervisor.gdshader

@@ -0,0 +1,12 @@
+shader_type canvas_item;
+
+uniform sampler2D noise_tex;
+uniform float progress : hint_range(0.0, 1.0) = 0.0;
+uniform float softness : hint_range(0.001, 0.2) = 0.05;
+
+void fragment() {
+    vec4 img = texture(TEXTURE, UV);
+    float noise = texture(noise_tex, UV).r;
+    float alpha = 1.0 - smoothstep(progress - softness, progress + softness, noise);
+    COLOR = vec4(img.rgb, img.a * alpha);
+}