Created ParticleFade shader

hrt/shader/ParticleFade.hx

@@ -0,0 +1,22 @@
+package hrt.shader;
+
+class ParticleFade extends hxsl.Shader {
+
+	static var SRC = {
+        @:import hrt.shader.BaseEmitter;
+
+        @param var fadeInLife : Float = 0.1;
+        @param var fadeOutLife : Float = 0.1;
+        @param @range(0.01,10) var power : Float = 1.0;
+
+		var pixelColor : Vec4;
+
+        function fragment() {
+            var t = particleLife / particleLifeTime;
+            var fadeIn = t / max(0.0001, fadeInLife);
+            var fadeOut = (1.0-t) / max(0.0001, fadeOutLife);
+
+            pixelColor.a *= pow(min(min(fadeIn, fadeOut), 1.0), power);
+        }
+	};
+}