Replace mask shader "if + discard" instruction to "clip"

Assets/FlashTools/Docs/CHANGELOG.md

@@ -4,6 +4,7 @@
 * Fix warning on add missing components
 * Replace string shader properties to id
 * Replace shader "if" instruction to "step"
+* Replace mask shader "if + discard" instruction to "clip"
 
 ###### Version 1.3.8
 * Fix shape groups in tweens problems

Assets/FlashTools/Resources/Materials/SwfBaseCG.cginc

@@ -156,9 +156,7 @@ inline fixed4 swf_mask_frag(swf_mask_v2f_t IN) : SV_Target {
 	fixed4 c = tex2D(_MainTex, IN.uv);
 	fixed4 a = tex2D(_AlphaTex, IN.uv).r;
 	c.a = lerp(c.a, a.r, _ExternalAlpha);
-	if ( c.a < 0.01 ) {
-		discard;
-	}
+	clip(c.a - 0.01);
 	return c;
 }