Some shader optimization

game/entities/ships/shield.gdshader

@@ -29,14 +29,11 @@ float cellular(vec2 coord) {
 }
 
 void fragment() {
+	if (COLOR.a != 0.0) {
 		vec2 coord = UV * scale;
 
 		float pattern = cellular(coord);
 
-    float alpha = COLOR.a;
-    if (pattern > intensity) {
-        alpha = 0.0;
+		COLOR = vec4(COLOR.rgb, (pattern > intensity) ? 0.0 : 1.0);
 	}
-    
-    COLOR = vec4(COLOR.rgb, alpha);
 }