Рефактор.

shaders/strips.gdshader

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+shader_type canvas_item;
+
+#include "res://shaders/tools.gdshaderinc"
+
+const vec2 center = vec2(0.125, 0.125);
+const float sharpness = 300.0;
+
+uniform float rotation = 0.0;
+uniform vec4 color = vec4(1.0, 1.0, 1.0, 1.0);
+uniform float width = 1.0;
+uniform float speed = 1.0;
+uniform bool disabled = false;
+uniform vec2 scale = vec2(1.0, 1.0);
+
+
+void vertex()
+{
+    rotate_vec2(UV, rotation, center);
+}
+
+
+void fragment()
+{
+   	COLOR = color;
+    if (disabled)
+    {
+        float ds = 1.0 / sharpness;
+        float tx = float(int(TIME * 1000.0 * speed) % 10000) / 1000.0 * center.x + center.x;
+        COLOR.a = 0.0;
+        vec2 uv = UV;
+        rotate_vec2(uv, -rotation, center);
+        float v3 = smoothstep(0.0, 1.0, (uv.x - center.x / 2.0 / scale.x) * sharpness);
+        float v4 = smoothstep(0.0, 1.0, (uv.y - center.y / 2.0 / scale.y) * sharpness);
+        float v5 = smoothstep(0.0, 1.0, (center.x * 2.0 - center.x / 2.0 / scale.x - uv.x) * sharpness);
+        float v6 = smoothstep(0.0, 1.0, (center.y * 2.0 - center.y / 2.0 / scale.y - uv.y) * sharpness);
+
+        for (float x = -2.0; x < 2.0; x += 0.03)
+        {
+            float v0 = smoothstep(0.0, 1.0, (tx - UV.x + x) * sharpness + width);
+            float v1 = smoothstep(0.0, 1.0, (UV.x - tx - x) * sharpness + width);
+            float v2 = smooth_px(length(UV.x - center.x), center.x * 2.0 - ds, ds);
+            COLOR.a += v0 * v1 * v2 * v3 * v4 * v5 * v6;
+        }
+        COLOR.a *= color.a;
+    }
+}