# fullScreen(P3D) not fullscreening on Windows

**URL:** <https://discourse.processing.org/t/fullscreen-p3d-not-fullscreening-on-windows/49065>\
**Category:** Coding Questions\
**Created:** [July 28, 2026, 12:16pm UTC](https://discourse.processing.org/t/fullscreen-p3d-not-fullscreening-on-windows/49065 "2026-07-28T12:16:33Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![cjkcjk](https://avatars.discourse-cdn.com/v4/letter/c/ecb155/32.png) [@cjkcjk](https://discourse.processing.org/u/cjkcjk)\
**Post date:** [July 28, 2026, 12:16pm UTC](https://discourse.processing.org/t/fullscreen-p3d-not-fullscreening-on-windows/49065/1 "2026-07-28T12:16:33Z")

</div>

Any help or advice on this is welcomed. When I use fullScreen(P2D) or fullScreen(P3D) I do not get a full screen, rather I get a window in the top left with the same aspect ratio as the screen. If I use fullScreen() then I do get a full screen.

```auto
void setup() {
  fullScreen(P3D);
}
void draw() {
  circle(100, 100, 100);
}

```

The console is showing this message  
“display count needs to be implemented for non-AWT  
AWT disabled, displayWidth/displayHeight will be 0”

I am using Processing 4.5.6

---

<div class="post-metadata">

**Author:** ![glv](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/glv/32/18785_2.png) [@glv](https://discourse.processing.org/u/glv)\
**Post date:** [July 28, 2026, 2:26pm UTC](https://discourse.processing.org/t/fullscreen-p3d-not-fullscreening-on-windows/49065/2 "2026-07-28T14:26:52Z")

</div>

Hello @cjkcjk,

Welcome to the forum.

This may help:  
_[Renderers (and Windows scaling) - #3 by glv](https://discourse.processing.org/t/renderers-and-windows-scaling/47524/3)_

Environment:  
W11  
Processing 4.5.6  
Windows scaling set to 125%

I tried this (from post above) with it seemed to work with 1.00 now in W11!

```auto
static 
  {
  // Forces 1:1 pixel rendering by disabling OS-level DPI scaling  
  System.setProperty("sun.java2d.uiScale", "1.00"); 
  }

```

Give it a try and report back.

Also check out the **Related posts** at the bottom of the topics!  
Scrutinize these topics since there are lots of variables to consider such as OS, Windows settings (scaling is one), Processing versions, etc.  
Don’t get lost in there!

I get this on Processing 4.5.6 even with a blank sketch and ignore this:

 ![image](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/3X/5/d/5d61cf049c4d6676e7e2aa0e6cb9eba1abd8b4f7.png)

`:)`

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<div class="post-metadata">

**Author:** ![cjkcjk](https://avatars.discourse-cdn.com/v4/letter/c/ecb155/32.png) [@cjkcjk](https://discourse.processing.org/u/cjkcjk)\
**Post date:** [July 28, 2026, 4:53pm UTC](https://discourse.processing.org/t/fullscreen-p3d-not-fullscreening-on-windows/49065/3 "2026-07-28T16:53:28Z")

</div>

Well that worked, thank you. The link is very informative too.

🙂