Draw#discard()

arc-core/src/arc/graphics/g2d/Batch.java

@@ -101,6 +101,11 @@ protected void draw(Runnable request){
 
     protected abstract void flush();
 
+    /** Discards any pending sprites. */
+    protected void discard(){
+        idx = 0;
+    }
+
     protected void setBlending(Blending blending){
         if(this.blending != blending){
             flush();

arc-core/src/arc/graphics/g2d/Draw.java

@@ -410,7 +410,12 @@ public static void vert(Texture texture, float[] vertices, int offset, int lengt
     }
 
     public static void flush(){
-        Core.batch.flush();
+        batch.flush();
+    }
+
+    /** Discards any pending batched sprites. */
+    public static void discard(){
+        batch.discard();
     }
 
     public static void proj(float x, float y, float w, float h){

arc-core/src/arc/graphics/g2d/SortedSpriteBatch.java

@@ -139,6 +139,14 @@ protected void flush(){
         super.flush();
     }
 
+    @Override
+    protected void discard(){
+        if(!flushing){
+            numRequests = 0;
+        }
+        super.discard();
+    }
+
     protected void flushRequests(){
         if(!flushing && numRequests > 0){
             flushing = true;