keep deprecated requestFBOLayer() method for now.

Author: codeanticode

core/src/processing/opengl/PGL.java

@@ -516,6 +516,12 @@ protected int getDefaultReadBuffer()  {
   }
 
 
+  @Deprecated
+  public void requestFBOLayer() {
+    enableFBOLayer();
+  }
+
+
   public void enableFBOLayer() {
     fboLayerEnabledReq = true;
   }