Hello guys, I’m loading stuff from another thread, so as to not slow down the main thread (slowing animations and other stuff down in say a loading gui) and after loading something once or twice I get this error.
Exception in thread "AdvancedLoadingAppState" java.lang.OutOfMemoryError: Direct buffer memory
at java.nio.Bits.reserveMemory(Bits.java:693)
at java.nio.DirectByteBuffer.<init>(DirectByteBuffer.java:123)
at java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:311)
at com.jme3.util.BufferUtils.createIntBuffer(BufferUtils.java:934)
at com.jme3.scene.mesh.IndexBuffer.createIndexBuffer(IndexBuffer.java:73)
at com.jme3.terrain.geomipmap.LODGeomap.writeIndexArrayLodDiff(LODGeomap.java:165)
at com.jme3.terrain.geomipmap.LODGeomap.createMesh(LODGeomap.java:86)
at com.jme3.terrain.geomipmap.LODGeomap.createMesh(LODGeomap.java:78)
at com.jme3.terrain.geomipmap.TerrainPatch.cloneFields(TerrainPatch.java:972)
at com.jme3.util.clone.Cloner.clone(Cloner.java:255)
at com.jme3.util.clone.Cloner.clone(Cloner.java:160)
at com.jme3.util.clone.ListCloneFunction.cloneFields(ListCloneFunction.java:66)
at com.jme3.util.clone.ListCloneFunction.cloneFields(ListCloneFunction.java:43)
at com.jme3.util.clone.Cloner.clone(Cloner.java:228)
at com.jme3.util.clone.Cloner.clone(Cloner.java:160)
at com.jme3.scene.Node.cloneFields(Node.java:725)
at com.jme3.terrain.geomipmap.TerrainQuad.cloneFields(TerrainQuad.java:1801)
at com.jme3.util.clone.Cloner.clone(Cloner.java:255)
at com.jme3.util.clone.Cloner.clone(Cloner.java:160)
at com.jme3.util.clone.ListCloneFunction.cloneFields(ListCloneFunction.java:66)
at com.jme3.util.clone.ListCloneFunction.cloneFields(ListCloneFunction.java:43)
at com.jme3.util.clone.Cloner.clone(Cloner.java:228)
at com.jme3.util.clone.Cloner.clone(Cloner.java:160)
at com.jme3.scene.Node.cloneFields(Node.java:725)
at com.jme3.terrain.geomipmap.TerrainQuad.cloneFields(TerrainQuad.java:1801)
at com.jme3.util.clone.Cloner.clone(Cloner.java:255)
at com.jme3.util.clone.Cloner.clone(Cloner.java:160)
at com.jme3.util.clone.ListCloneFunction.cloneFields(ListCloneFunction.java:66)
at com.jme3.util.clone.ListCloneFunction.cloneFields(ListCloneFunction.java:43)
at com.jme3.util.clone.Cloner.clone(Cloner.java:228)
at com.jme3.util.clone.Cloner.clone(Cloner.java:160)
at com.jme3.scene.Node.cloneFields(Node.java:725)
at com.jme3.util.clone.Cloner.clone(Cloner.java:255)
at com.jme3.util.clone.Cloner.clone(Cloner.java:160)
at com.jme3.scene.Spatial.clone(Spatial.java:1360)
at com.jme3.scene.Node.clone(Node.java:682)
at com.jme3.scene.Node.clone(Node.java:62)
at com.jme3.scene.Spatial.clone(Spatial.java:1448)
at com.jme3.scene.Spatial.clone(Spatial.java:70)
at com.jme3.asset.CloneableAssetProcessor.createClone(CloneableAssetProcessor.java:48)
at com.jme3.asset.DesktopAssetManager.registerAndCloneSmartAsset(DesktopAssetManager.java:317)
at com.jme3.asset.DesktopAssetManager.loadAsset(DesktopAssetManager.java:379)
at com.jme3.asset.DesktopAssetManager.loadModel(DesktopAssetManager.java:416)
at com.jme3.asset.DesktopAssetManager.loadModel(DesktopAssetManager.java:420)
at com.epicest.reusables.PixelApplication.openLoad(PixelApplication.java:270)
at com.epicest.reusables.loading.AdvancedLoadingAppState.update(AdvancedLoadingAppState.java:53)
at com.jme3.app.state.AppStateManager.update(AppStateManager.java:287)
at com.epicest.reusables.loading.AdvancedLoadingAppState.run(AdvancedLoadingAppState.java:60)
at java.lang.Thread.run(Thread.java:745)
I’ve tried doing something like System.gc(); after running my loader but nothing happens. my conflicting code:
public void openLoad() {
try {
final Spatial scene = assetManager.loadModel(load);
this.enqueue(new Callable<Boolean>() {
@Override
public Boolean call() {
initScene(scene);
return true;
}
});
} catch (Exception e) {
loaderAppState.markForLoad();
}
}
Where load is a String specifying the path to my j3o scene and initScene(); attach’s my scene to the rootNode and prepares other stuff (such as Character Controls, App States etc.)
I’ve already increased the memory size, to 4 Gig, really I think the biggest thing that my scene holds is the terrain, and otherwise it’s just a bunch of links to other j3o scene files I’m using as models, would those links I have be the problem? I doubt it, but I don’t really know. the scene file’s tree is small enough to fit on my screen, so I doubt it’s too big, but idk, I’m finding out I can’t move my terrain to somewhere more… manageable so I’ll probably just recreate my terrain with existing height map files, maybe that will fix something, probably not.
We can’t know, because you aren’t providing us with any information. All I can presume personally is that your scene is way too big, and thus you have run out of allocated memory.
Well I could upload the source of the projects I’m using doing this, assets and all, because I really don’t know any other info that might help this, but I doubt anyone here wants to shuffle through my code, trying to find info on this.
The first port of call is what you are loading, and when this occurs. Does it occur when you load a specific object - or after a period of time? If it’s the former - the object is way too big and needs to be sectioned off into chunks. If it’s the latter, there are too many objects in the scene and you need to again chunk it all out into sections.
I have a feeling you are loading objects into the scene with no regard for unloading them. So as you move around, more and more objects are being added, but nothing is being removed. Is that correct?
I load the scene into memory to put into the rootNode, remove everything from the rootNode and then add the scene I loaded. I realize I have no regard for loading in and loading out nicely… there are a couple ways I can optimize this code (such as detaching everything from the rootNode before loading stuff, and I realize im removing view port procc3essors when im basically re-adding them, a couple other things to that extent)
/**
* Loads a scene.
*/
public void initScene(Spatial newScene) {
//reset scene
curScene = newScene;
rootNode.detachAllChildren();
viewPort.clearProcessors();
//init scene
assetsInit();
displayInit();
physicsInit();
scriptingInit();
otherInit();
//finish
//niftyState.gotoScreen("hud");
loadState = LOAD_FINISHED;
isInWorld = true;
}
/**
* Initializes assets Honestly I'm not even sure I need this.
*/
protected abstract void assetsInit();
/**
* Initializes any graphical needs Such as putting the scene you are loading on
* the screen, and any filters.
*/
protected void displayInit() {
//Display
rootNode.attachChild(curScene);
// Drop shadows
DirectionalLight sun = new DirectionalLight();
sun.setDirection(new Vector3f(-0.5f, -0.5f, -0.5f));
//[1.0, 0.9, 0.7, 1.0]
final int SHADOWMAP_SIZE = 1024;
DirectionalLightShadowRenderer dlsr = new DirectionalLightShadowRenderer(assetManager, SHADOWMAP_SIZE, 3);
dlsr.setLight(sun); //<==assuming a directional light
//viewPort.addProcessor(dlsr);
//Post Processor Filters */
viewPort.addProcessor(assetManager.loadFilter("Shaders/Default.j3f"));
}
/**
* Initializes physics.
*/
protected void physicsInit() {
//Initiallize AppState
stateManager.detach(stateManager.getState(BulletAppState.class));
bulletAS = new BulletAppState();
stateManager.attach(bulletAS);
bulletAS.getPhysicsSpace().setGravity(normalGravity);
inputManager.setCursorVisible(false);
//bulletAS.getPhysicsSpace().enableDebug(assetManager);
//SceneCollisions
CollisionShape sceneShape = CollisionShapeFactory.createMeshShape(curScene);
landscape = new RigidBodyControl(sceneShape, 0);
curScene.addControl(landscape);
bulletAS.getPhysicsSpace().add(landscape);
//Player
playerInit(spawn);
//TODO: Invisible Walls
}
/**
* Initializes the player physics object at a spawnpoint.
*
* @param spawnNode the name of a Node for the player to spawn at.
*/
protected void playerInit(String spawnNode) {
stateManager.detach(stateManager.getState(FlyCamAppState.class));
stateManager.detach(stateManager.getState(CharacterInputAppState.class));
stateManager.detach(stateManager.getState(InteractablesAppState.class));
//Player
Node playerNode = new Node("Player");
playerNode.setLocalTranslation(rootNode.getChild(spawnNode).getWorldTranslation());
//FOJItems itemset = new FOJItems();
if (player == null) {
player = new GameCharacterControl(1.1f, 5f, 7f, playerNode.getWorldTranslation());
player.setGravity(normalGravity);
player.setCamera(cam);
player.setTrait(113, "a");
}
player.setSpatial(playerNode);
playerNode.addControl(player);
bulletAS.getPhysicsSpace().add(player);
charInAS = new CharacterInputAppState();
charInAS.setCharacter(player);
stateManager.attach(charInAS);
interactAS = new InteractablesAppState();
stateManager.attach(interactAS);
rootNode.attachChild(playerNode);
}
/**
* Initialises ScriptAppState.
*/
private void scriptingInit() {
scriptAS = new ScriptAppState();
stateManager.attach(scriptAS);
//Initialize any scripts applicable in the scene
}
/**
* Anything else needed to initialize during scene loading.
*/
protected abstract void otherInit();
I figured out a temporary solution, listed below, that keeps this from happening in the IDE (and most likely games too,) but for now I’m just staying away from large terrains.
Yeah… that’s a problem.
