# P3 sketch isn't displaying on Mac OS13(Ventura), but p4 ok

**URL:** <https://discourse.processing.org/t/p3-sketch-isnt-displaying-on-mac-os13-ventura-but-p4-ok/40854>\
**Category:** Processing\
**Created:** [February 7, 2023, 4:12am UTC](https://discourse.processing.org/t/p3-sketch-isnt-displaying-on-mac-os13-ventura-but-p4-ok/40854 "2023-02-07T04:12:13Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![xxlinxx](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/xxlinxx/32/15873_2.png) [@xxlinxx](https://discourse.processing.org/u/xxlinxx)\
**Post date:** [February 7, 2023, 4:12am UTC](https://discourse.processing.org/t/p3-sketch-isnt-displaying-on-mac-os13-ventura-but-p4-ok/40854/1 "2023-02-07T04:12:13Z")

</div>

on before processing4.1.1 JDK17.0.4 add initSingleton method w/macOS 13

```auto
public void settings() {
		GLProfile.initSingleton();
		size(1400, 800, P3D);
}

```

but, on processing3 JDK1.8.0.292 sketch window still does not work not showing.  
on macOS 13, I have some old projects, processing4 work fine with com.jogamp.opengl.GLProfile.initSingleton();  
but the processing3 project with that method of calling still not working.

Those old projects can not trans from p3 to p4, that bcoz I use p3 as lib on IntelliJ which is a huge project, and it’s running on others OLD Mac mini that cant update the system. But my develop macbook pro is running new OS13…

So I still need to develop p3(correto, temurin JDK1.8) with the new OS13 .  
Do I need to try other JDK platforms?  
Does anyone find a solution to this?  
Thx a lot .

on Mac OS13(Ventura),

- p3=not showing,
- p4(before v4.1.1)=add GLProfile.initSingleton(); then, ok now.
- p4(after v4.1.1, like4.1.2 )=ok now.

---

<div class="post-metadata">

**Author:** ![th75](https://avatars.discourse-cdn.com/v4/letter/t/ebca7d/32.png) [@th75](https://discourse.processing.org/u/th75)\
**Post date:** [February 9, 2023, 10:36pm UTC](https://discourse.processing.org/t/p3-sketch-isnt-displaying-on-mac-os13-ventura-but-p4-ok/40854/2 "2023-02-09T22:36:42Z")

</div>

hi,  
i can t help on old processing working on new macos by changing jdks, it was still possible on macos 11, but i never succeed on new ones, (it doesn t mean it s not possible)  
however, i did a lot of lowlevel opengl, selecting opengl profiles, and never had to use `GLProfile.initSingleton();`  
just going `PJOGL.profile = x;` and so, just after size(x,x,P3D);

(and just in case, on processing 3, it is mandatory on new macs to set a framerate(xx) after size(x,x,P3D) to work)