Away3D Forum SkyBox still renders after removing it?

Stephen Hopkins, Sr. Member
Posted: 16 July 2011 09:44 PM Total Posts: 110

Is there something you need to remove it other than view.scene.removeChild(skyBox)?

I made a simple test program that adds a skybox, renders once, removes the skybox and renders again, and the skybox is still there.

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http://www-scf.usc.edu/~shopkins

Richard Olsson, Administrator
Posted: 17 July 2011 07:05 AM Total Posts: 1192 [ # 1 ]

It sounds like you are trying to do it all on a single frame. Is that the case? Drawing on the GPU is asynchronous, so it might simply be that you need to wait for the first “frame” to render before removing the object and invoking render() again.

Otherwise give us some code to reproduce and we’ll investigate the issue.

Stephen Hopkins, Sr. Member
Posted: 17 July 2011 09:00 AM Total Posts: 110 [ # 2 ]

It was over multiple frames.

Hm… Though, I wasn’t checking if the skybox actually still worked, i.e., background changes when rotating the camera. So, I added a rotation to the camera. Once the skybox is removed, the background stops rotating, but the skybox background is still there. Maybe the buffer for the skybox isn’t getting cleared? The view/camera are still working, but the skybox seems to be frozen in place at the moment you removed it.

Here’s the program I used. The cube is there so you can see that everything else works while the skybox is stuck. The skybox images can be found here:
http://www-scf.usc.edu/~shopkins/files/cave.zip .

package{
 import away3d.containers.View3D;
 import away3d.materials.ColorMaterial;
 import away3d.materials.utils.CubeMap;
 import away3d.primitives.Cube;
 import away3d.primitives.SkyBox;
 
 import flash.display.Sprite;
 import flash.events.Event;

 public class SkyboxTest extends Sprite{
  [Embed(source="../cave/caveback.jpg")]
  private var caveback: Class;
  [Embed(source="../cave/cavefront.jpg")]
  private var cavefront: Class;
  [Embed(source="../cave/cavedown.jpg")]
  private var cavedown: Class;
  [Embed(source="../cave/caveleft.jpg")]
  private var caveleft: Class;
  [Embed(source="../cave/caveright.jpg")]
  private var caveright: Class;
  [Embed(source="../cave/caveup.jpg")]
  private var caveup: Class;
  private var _view:View3D = new View3D();
  private var _skybox:SkyBox;
  private var _removeCount:int = 0;
  public function SkyboxTest(){
   _skybox = new SkyBox(new CubeMap(
    new caveright().bitmapData,
    new caveleft().bitmapData,
    new caveup().bitmapData,
    new cavedown().bitmapData,
    new cavefront().bitmapData,
    new caveback().bitmapData
   ));
   _view.scene.addChild(_skybox);
   _view.scene.addChild(new Cube(new ColorMaterial(0xFFFFFF)));//for point of reference
   this.addChild(_view);
   this.addEventListener(Event.ENTER_FRAME, run, false, 0, true);
  }
  public function run(e:Event):void{
   ++_removeCount;
   if(_removeCount == 20){//remove skybox on 20.. before I used a simple boolean to remove it after rendering once, still same bug
    _view.scene.removeChild(_skybox);
    trace("removed skybox");
   }
   _view.camera.rotationY += 10;//to see if skybox still working
   _view.render();

  }
 }
} 

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http://www-scf.usc.edu/~shopkins

David Lenaerts, Administrator
Posted: 20 July 2011 02:46 PM Total Posts: 80 [ # 3 ]

This was a bug in the EntityCollector, which should now be fixed!

SkyBox still renders after removing it? Software: Away3D 4.x

Stephen Hopkins, Sr. Member Posted: 16 July 2011 09:44 PM Total Posts: 110 Is there something you need to remove it other than view.scene.removeChild(skyBox)? I made a simple test program that adds a skybox, renders once, removes the skybox and renders again, and the skybox is still there. Signature http://www-scf.usc.edu/~shopkins
Richard Olsson, Administrator Posted: 17 July 2011 07:05 AM Total Posts: 1192 [ # 1 ] It sounds like you are trying to do it all on a single frame. Is that the case? Drawing on the GPU is asynchronous, so it might simply be that you need to wait for the first “frame” to render before removing the object and invoking render() again. Otherwise give us some code to reproduce and we’ll investigate the issue.
Stephen Hopkins, Sr. Member Posted: 17 July 2011 09:00 AM Total Posts: 110 [ # 2 ] It was over multiple frames. Hm… Though, I wasn’t checking if the skybox actually still worked, i.e., background changes when rotating the camera. So, I added a rotation to the camera. Once the skybox is removed, the background stops rotating, but the skybox background is still there. Maybe the buffer for the skybox isn’t getting cleared? The view/camera are still working, but the skybox seems to be frozen in place at the moment you removed it. Here’s the program I used. The cube is there so you can see that everything else works while the skybox is stuck. The skybox images can be found here: http://www-scf.usc.edu/~shopkins/files/cave.zip . package{ import away3d.containers.View3D; import away3d.materials.ColorMaterial; import away3d.materials.utils.CubeMap; import away3d.primitives.Cube; import away3d.primitives.SkyBox; import flash.display.Sprite; import flash.events.Event; public class SkyboxTest extends Sprite{ [Embed(source="../cave/caveback.jpg")] private var caveback: Class; [Embed(source="../cave/cavefront.jpg")] private var cavefront: Class; [Embed(source="../cave/cavedown.jpg")] private var cavedown: Class; [Embed(source="../cave/caveleft.jpg")] private var caveleft: Class; [Embed(source="../cave/caveright.jpg")] private var caveright: Class; [Embed(source="../cave/caveup.jpg")] private var caveup: Class; private var _view:View3D = new View3D(); private var _skybox:SkyBox; private var _removeCount:int = 0; public function SkyboxTest(){ _skybox = new SkyBox(new CubeMap( new caveright().bitmapData, new caveleft().bitmapData, new caveup().bitmapData, new cavedown().bitmapData, new cavefront().bitmapData, new caveback().bitmapData )); _view.scene.addChild(_skybox); _view.scene.addChild(new Cube(new ColorMaterial(0xFFFFFF)));//for point of reference this.addChild(_view); this.addEventListener(Event.ENTER_FRAME, run, false, 0, true); } public function run(e:Event):void{ ++_removeCount; if(_removeCount == 20){//remove skybox on 20.. before I used a simple boolean to remove it after rendering once, still same bug _view.scene.removeChild(_skybox); trace("removed skybox"); } _view.camera.rotationY += 10;//to see if skybox still working _view.render(); } } } Signature http://www-scf.usc.edu/~shopkins
David Lenaerts, Administrator Posted: 20 July 2011 02:46 PM Total Posts: 80 [ # 3 ] This was a bug in the EntityCollector, which should now be fixed!

SkyBox still renders after removing it?

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