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私は、2Dタイルベースのプロジェクト用の単純なテクスチャマネージャを作ろうとしています。シンプルなJava OpenGLテクスチャマネージャー
私が持っているのは、文字列（テクスチャ名）とテクスチャのハッシュマップを持つクラスです。名前がハッシュマップに存在しない場合は、TextureIO.newTexture（..）を使用して名前を作成し、ハッシュマップに格納します。
これは私がテクスチャをロードしようとすると、私が取得エラーです：
Exception in thread "Timer-0" javax.media.opengl.GLException: java.lang.IllegalArgumentException: Illegally formatted version identifier: "null"
at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
at com.sun.opengl.util.Animator.display(Animator.java:144)
at com.sun.opengl.util.FPSAnimator$1.run(FPSAnimator.java:95)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)
Caused by: java.lang.IllegalArgumentException: Illegally formatted version identifier: "null"
at com.sun.opengl.impl.FunctionAvailabilityCache$Version.<init>(FunctionAvailabilityCache.java:354)
at com.sun.opengl.impl.FunctionAvailabilityCache.initAvailableExtensions(FunctionAvailabilityCache.java:133)
at com.sun.opengl.impl.FunctionAvailabilityCache.isExtensionAvailable(FunctionAvailabilityCache.java:104)
at com.sun.opengl.impl.GLContextImpl.isExtensionAvailable(GLContextImpl.java:351)
at com.sun.opengl.impl.GLImpl.isExtensionAvailable(GLImpl.java:30493)
at com.sun.opengl.util.texture.Texture.updateImage(Texture.java:416)
at com.sun.opengl.util.texture.Texture.updateImage(Texture.java:381)
at com.sun.opengl.util.texture.Texture.<init>(Texture.java:182)
at com.sun.opengl.util.texture.TextureIO.newTexture(TextureIO.java:445)
at com.sun.opengl.util.texture.TextureIO.newTexture(TextureIO.java:465)
at dqs.manager.TextureManager.loadTexture(TextureManager.java:31)
at dqs.world.World.draw(World.java:59)
at dqs.scene.GameScene.display(GameScene.java:58)
at com.sun.opengl.impl.GLDrawableHelper.display(GLDrawableHelper.java:78)
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:435)
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$000(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at com.sun.opengl.impl.FunctionAvailabilityCache$Version.<init>(FunctionAvailabilityCache.java:309)
... 30 more
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at com.sun.opengl.impl.mipmap.Mipmap.closestFit(Mipmap.java:252)
at com.sun.opengl.impl.mipmap.Mipmap.gluBuild2DMipmaps(Mipmap.java:726)
at javax.media.opengl.glu.GLU.gluBuild2DMipmapsJava(GLU.java:1525)
at javax.media.opengl.glu.GLU.gluBuild2DMipmaps(GLU.java:1581)
at com.sun.opengl.util.texture.Texture.updateImage(Texture.java:523)
at com.sun.opengl.util.texture.Texture.updateImage(Texture.java:381)
at com.sun.opengl.util.texture.Texture.<init>(Texture.java:182)
at com.sun.opengl.util.texture.TextureIO.newTexture(TextureIO.java:445)
at com.sun.opengl.util.texture.TextureIO.newTexture(TextureIO.java:465)
at dqs.manager.TextureManager.loadTexture(TextureManager.java:31)
at dqs.world.World.draw(World.java:59)
at dqs.scene.GameScene.display(GameScene.java:58)
at com.sun.opengl.impl.GLDrawableHelper.display(GLDrawableHelper.java:78)
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:435)
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:412)
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
at javax.media.opengl.GLCanvas.paint(GLCanvas.java:277)
at sun.awt.RepaintArea.paintComponent(Unknown Source)
at sun.awt.RepaintArea.paint(Unknown Source)
at sun.awt.windows.WComponentPeer.handleEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$000(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$2.run(Unknown Source)
at java.awt.EventQueue$2.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
エラーは、私は私のTextureManager内からloadTextureを呼び出した瞬間に発生します。ここで
はTextureManagerコードです：
：これは私が使用してそれを呼び出したコードであるnew TextureManager();
：
public class TextureManager {
private static HashMap<String, Texture> textureMap;
public TextureManager() {
textureMap = new HashMap<String, Texture>();
}
public static void loadTexture(String name) {
if(textureMap.containsKey(name)) return;
try {
textureMap.put(name, TextureIO.newTexture(new File("textures/" + name + ".png"), true));
}
catch (GLException e) {
e.printStackTrace();
}
catch (IOException e) {
e.printStackTrace();
}
}
public static void bindTexture(String name) {
textureMap.get(name).bind();
}
}
A TextureManagerオブジェクトが既に経由して、以前のコードで作成されています
TextureManager.loadTexture("tree");
パステクスチャ/ tree.pngも存在します。
以前のプロジェクトでこれと似たようなことをしましたが、ハッシュマップを使用する代わりに、私が使ったテクスチャごとにTextureManagerの変数をハードコーディングしました。私は古いTextureManagerがコンストラクタを介してGLを渡したが、コードでそれを使用していないため、スレッドにGLコンテキストがないことが原因であると思われます。 loadTexture関数を呼び出した描画関数もGL変数に渡されます。