Unity 4.1 Airplay: missing docs

Ok and how do i assign a camera to a specific display ?

 

Don't know if it's a bug or a limitation currently and don't know if it's the right place to ask but...

Got AirPlay working very fast on our game (forma.8) yesterday, very easy following the documentation, however I have a problem: we use three camera in the game right now and I have no problem in using them on the main display, but when mirroring we can only output one single camera on the external display but not a second one. When we switch off the mirroring and reassign in code the camera to the main display everything works as supposed.

Basically we need to have two cameras rendered on the external display (game + HUD), and one on the main display when mirroring (another part of the HUD), but after trying everything possible I can only get one camera to render properly on the external display.

Any idea?

 

Ok nevermind... it was a mistake on my part, a stupid syntax error! Too much code to crunch in two days and I missed it!

For anyone who needs it, that's the code snippet we are using for mirroring the game (three cameras: game, hud and game map, when mirroring only the map shows in the iPad display), derived from the documentation and from here:

http://drawlogic.com/2013/03/14/unity-4-1-apple-tv-airplay-and-the-new-consoles/

Just call DualDisplay() in an Invoke or Update.

Code (csharp):

1.  
2.  
3. var mainCamera : Camera;
4. var hudCamera : Camera;
5. var mapCamera : Camera;
6.  
7. function DualDisplay() {
8.  
9.     if ( Display.displays.Length > 1  ) {
10.  
11.  
12.                     var secondDisplay : Display = Display.displays[1];
13.                    
14.                     Display.displays[1].SetRenderingResolution(1280,720);
15.                     Display.displays[0].SetRenderingResolution(2048,1536);
16.                    
17.                     mapCamera.SetTargetBuffers (Display.main.colorBuffer, Display.main.depthBuffer);
18.                     hudCamera.SetTargetBuffers (secondDisplay.colorBuffer, secondDisplay.depthBuffer);
19.                     mainCamera.SetTargetBuffers (secondDisplay.colorBuffer, secondDisplay.depthBuffer);
20.                    
21.     }
22.                 else
23.                
24.         {
25.  
26.                     Display.displays[0].SetRenderingResolution(2048,1536);
27.                     mapCamera.SetTargetBuffers (Display.main.colorBuffer, Display.main.depthBuffer);
28.                     hudCamera.SetTargetBuffers (Display.main.colorBuffer, Display.main.depthBuffer);
29.                     mainCamera.SetTargetBuffers (Display.main.colorBuffer, Display.main.depthBuffer);
30.  
31.                 }
32.                
33.  
34. }

 

Works (with Airserver), but looks terribly aliased.
Is there a way to get AntiAlias for the secondary display?

 

Anybody can help me to understand how AirPlay Mirroring works?

If you connect iPad to AirPlay, the iPad is calculate everything for 2 monitor?

So mirroring cut to half performance if I not disable the camere from one monitor ...

It is right?

 

Up

 

No, there´s no noticable slowdown on the framerate.
You can define what exactly will be send to the external screen by telling the app what camera should be taken.
If you don´t do any of these changes, the whole app will be send, as every other app will.

 

Ok so if I send one camera (it is the same) on 2 different monitor there is any slowdown on FPS?

 

I would say: No slowdown

 

Dear support,

about 2 hours I try to use AppleTV with my application(build with Unity 4.1.2f4) using AngryAnt gits source https://gist.github.com/AngryAnt/5160204.

As you can read in gits other users comment, also I encountered in display.Lenght = 1 Problem.

Unity render my camera in another buffer but cannot stream the content on my TV.

Any solution?

 

Just for your information:
As far as I know AppleTV and AirPlay are two different things. I haven´t tried AppleTV yet, but AirPlay is really easy:
Use the script above to define what camera will be sent.
Connect via WLAN to a PC/Mac where AirServer (www.airserver.com) is running.
The Airplay symbol appears on your device when you are connected. Hit this symbol to start streaming.

 

http://www.apple.com/appletv/airplay/

As you can see on Apple website, the AirPlay stream videocontent via AppleTV ...

If I use simple default AirPlay mirroring, All works correctly.

But the problem is Unity Display detection ...

I need to split my cameras on two display (GUI on Ipad and Main camera on TV like "MetalStorm: Wingman") but Display.display.Lenght = 1 ...So Unity cannot found second monitor ...

Thanks

 

Hello Cascho01,

How would I do that?
How would I send one camera to two displays, as SetTargetBuffers can only take one color/depth buffer?
I'm trying to get a camera to display on both the device and the external screen.

Thanks for your help!

 

If you just want to get the iPad-Screen mirrored to an external screen you don´t have to do anything in Unity:
Connect via WLAN to a PC/Mac where AirServer (www.airserver.com) is running.
The Airplay symbol appears on your device when you are connected. Hit this symbol to start streaming.

 

Hi,
I don't see anything on assigning a camera to several display.
I want to display on both the device AND the external screen.
Is there a way to do that?
Thank you!

 

No, I want ONE camera to display on both screens, not the whole game.
I know the whole game is mirrored when I don't do anything on any cameras, but when I call SetTargetBuffers on one camera, every camera starts being displayed on only one screen.
I have cameras that need to be displayed on the device (buttons...), cameras to be displayed on the TV (the game scene), AND cameras to be displayed on both.
Is there a way to do that without duplicating cameras?

Thanks for your answer!

 

Anyone is ablet to active AA on Secondary Display?

Thanks

 

Hi Cascho01,
Did you find a solution to this, i.e. Anti Aliasing to the secondary display?

 

Sorry, no

 

Well i was able to get 70% better anti-aliasing on my Windows system on which i installed the Air Server.
It has a Nvidia graphics card . I enabled anti-aliasing in the "Nvidia control panel" in the control panel.
Hope this helps.

 

I know this is an old post...but thanks so very much for sharing. Works very well and I'd been working forever to get it working. Thanks much!

 

Sorry to bump the old post again, but I've been banging my head against Airplay for a day now, can't seem to find what I'm looking for. We don't want our users to have to enable mirroring on their device in order for airplay to work. Is that possible? The post on drawlogic seems to imply it can be done with some native code, but I can't seem to find anyone who's actually done that. My Obj-C knowledge is limited at best, so before I go diving into that mess, I'd like to know for sure that's even possible.

Essentially we have a video player as part of the app, using VideoTexturePro to render H.264 video files that have been downloaded to device. I need to add an Airplay button to the UI for the video player. "Easy enough, Unity has this Display class, specifically for Airplay", says the naive Niall. But it turned out Display.displays.Length is always 1 unless you turn on mirroring outside of the app? I've seen what i'm looking for in other apps, presumably XCode native apps, but who knows. So I guess the big question would be, "Is it possible to detect Airplay devices in a Unity app without the user enabling mirroring outside of the app?"

Any pointers as to how that might be done would also be amazing. Thanks!

 

So are you saying it's literally impossible with Unity? The iOS netflix app does exactly what I describe, though it's obviously not built in Unity. Perhaps it's possible with something like the U3DXT plugin? Though of course their site has been down since last night!