The code below causes a RendererChangeException--what's the proper way to display for awhile in P2D, and then in the default renderer?

2. int phase = 1;
3. 
   
4. public void setup(){
5.   size(200,300,P2D);
6. }
7. 
   
8. public void draw(){
9.   if(phase == 1 && frameCount > 100 ) {
10.     setupPhaseTwo();
11.     phase = 2;
12.     //draw something in P2D here
13.   } else if (phase == 2) {
14.     //draw soemthing in default renderer here
15.   }
16. }
17. 
    
18. void setupPhaseTwo(){
19.   size(200,300);
20. }