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/*
 * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 * - Redistribution of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * 
 * - Redistribution in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * 
 * Neither the name of Sun Microsystems, Inc. or the names of
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
 * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
 * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
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 * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
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 * 
 * You acknowledge that this software is not designed or intended for use
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 * Sun gratefully acknowledges that this software was originally authored
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 */

package jogamp.opengl.gl2;

import jogamp.opengl.*;

import java.nio.*;
import javax.media.opengl.*;

/** 
 * Tracks the creation of server-side OpenGL objects which can be
 * shared between contexts. Ordinarily, when an OpenGL context is
 * deleted and no other contexts are sharing server-side objects with
 * it, all of the server-side objects are automatically deleted by the
 * OpenGL implementation. It is not necessary for the end user to
 * explicitly delete these objects. However, when the Java2D/OpenGL
 * pipeline is active and frame buffer objects are being used for
 * rendering, it is necessary for all OpenGL contexts created by JOGL
 * to share server-side objects with the Java2D OpenGL context. This
 * means that these objects "leak" into the namespace used by Java2D.
 * In order to prevent memory leaks and to present the same
 * programming model to the end user, it is necessary to track the
 * creation and destruction of all of these server-side OpenGL objects
 * and to explicitly release them when all of the JOGL-created
 * contexts which can see them have been released. 

* * The {@link #ref ref} and {@link #unref unref} methods should be * used during the creation and destruction of OpenGL contexts by JOGL * in order to update the liveness of the objects being tracked. The * various other methods should be called by the OpenGL binding in the * various named methods. */ public class GLObjectTracker { private static final boolean DEBUG = Debug.debug("GLStatusTracker"); //---------------------------------------------------------------------- // Adders // // glGenBuffers public synchronized void addBuffers(int n, IntBuffer ids) { add(getList(BUFFERS), n, ids); } // glGenBuffers public synchronized void addBuffers(int n, int[] ids, int ids_offset) { add(getList(BUFFERS), n, ids, ids_offset); } // glGenBuffersARB public synchronized void addBuffersARB(int n, IntBuffer ids) { add(getList(BUFFERS_ARB), n, ids); } // glGenBuffersARB public synchronized void addBuffersARB(int n, int[] ids, int ids_offset) { add(getList(BUFFERS_ARB), n, ids, ids_offset); } // glGenFencesAPPLE public synchronized void addFencesAPPLE(int n, IntBuffer ids) { add(getList(FENCES_APPLE), n, ids); } // glGenFencesAPPLE public synchronized void addFencesAPPLE(int n, int[] ids, int ids_offset) { add(getList(FENCES_APPLE), n, ids, ids_offset); } // glGenFencesNV public synchronized void addFencesNV(int n, IntBuffer ids) { add(getList(FENCES_NV), n, ids); } // glGenFencesNV public synchronized void addFencesNV(int n, int[] ids, int ids_offset) { add(getList(FENCES_NV), n, ids, ids_offset); } // glGenFragmentShadersATI public synchronized void addFragmentShadersATI(int start, int n) { add(getList(FRAGMENT_SHADERS_ATI), start, n); } // glGenFramebuffersEXT public synchronized void addFramebuffersEXT(int n, IntBuffer ids) { add(getList(FRAMEBUFFERS_EXT), n, ids); } // glGenFramebuffersEXT public synchronized void addFramebuffersEXT(int n, int[] ids, int ids_offset) { add(getList(FRAMEBUFFERS_EXT), n, ids, ids_offset); } // glGenLists public synchronized void addLists(int start, int n) { add(getList(LISTS), start, n); } // glGenOcclusionQueriesNV public synchronized void addOcclusionQueriesNV(int n, IntBuffer ids) { add(getList(OCCLUSION_QUERIES_NV), n, ids); } // glGenOcclusionQueriesNV public synchronized void addOcclusionQueriesNV(int n, int[] ids, int ids_offset) { add(getList(OCCLUSION_QUERIES_NV), n, ids, ids_offset); } // glCreateProgram public synchronized void addProgramObject(int obj) { add(getList(PROGRAM_OBJECTS), obj, 1); } // glCreateProgramObjectARB public synchronized void addProgramObjectARB(int obj) { add(getList(PROGRAM_AND_SHADER_OBJECTS_ARB), obj, 1); } // glGenProgramsARB public synchronized void addProgramsARB(int n, IntBuffer ids) { add(getList(PROGRAMS_ARB), n, ids); } // glGenProgramsARB public synchronized void addProgramsARB(int n, int[] ids, int ids_offset) { add(getList(PROGRAMS_ARB), n, ids, ids_offset); } // glGenProgramsNV public synchronized void addProgramsNV(int n, IntBuffer ids) { add(getList(PROGRAMS_NV), n, ids); } // glGenProgramsNV public synchronized void addProgramsNV(int n, int[] ids, int ids_offset) { add(getList(PROGRAMS_NV), n, ids, ids_offset); } // glGenQueries public synchronized void addQueries(int n, IntBuffer ids) { add(getList(QUERIES), n, ids); } // glGenQueries public synchronized void addQueries(int n, int[] ids, int ids_offset) { add(getList(QUERIES), n, ids, ids_offset); } // glGenQueriesARB public synchronized void addQueriesARB(int n, IntBuffer ids) { add(getList(QUERIES_ARB), n, ids); } // glGenQueriesARB public synchronized void addQueriesARB(int n, int[] ids, int ids_offset) { add(getList(QUERIES_ARB), n, ids, ids_offset); } // glGenRenderbuffersEXT public synchronized void addRenderbuffersEXT(int n, IntBuffer ids) { add(getList(RENDERBUFFERS_EXT), n, ids); } // glGenRenderbuffersEXT public synchronized void addRenderbuffersEXT(int n, int[] ids, int ids_offset) { add(getList(RENDERBUFFERS_EXT), n, ids, ids_offset); } // glCreateShader public synchronized void addShaderObject(int obj) { add(getList(SHADER_OBJECTS), obj, 1); } // glCreateShaderObjectARB public synchronized void addShaderObjectARB(int obj) { add(getList(PROGRAM_AND_SHADER_OBJECTS_ARB), obj, 1); } // glGenTextures public synchronized void addTextures(int n, IntBuffer ids) { add(getList(TEXTURES), n, ids); } // glGenTextures public synchronized void addTextures(int n, int[] ids, int ids_offset) { add(getList(TEXTURES), n, ids, ids_offset); } // glGenVertexArraysAPPLE public synchronized void addVertexArraysAPPLE(int n, IntBuffer ids) { add(getList(VERTEX_ARRAYS_APPLE), n, ids); } // glGenVertexArraysAPPLE public synchronized void addVertexArraysAPPLE(int n, int[] ids, int ids_offset) { add(getList(VERTEX_ARRAYS_APPLE), n, ids, ids_offset); } // glGenVertexShadersEXT public synchronized void addVertexShadersEXT(int start, int n) { add(getList(VERTEX_SHADERS_EXT), start, n); } //---------------------------------------------------------------------- // Removers // // glDeleteBuffers public synchronized void removeBuffers(int n, IntBuffer ids) { remove(getList(BUFFERS), n, ids); } // glDeleteBuffers public synchronized void removeBuffers(int n, int[] ids, int ids_offset) { remove(getList(BUFFERS), n, ids, ids_offset); } // glDeleteBuffersARB public synchronized void removeBuffersARB(int n, IntBuffer ids) { remove(getList(BUFFERS_ARB), n, ids); } // glDeleteBuffersARB public synchronized void removeBuffersARB(int n, int[] ids, int ids_offset) { remove(getList(BUFFERS_ARB), n, ids, ids_offset); } // glDeleteFencesAPPLE public synchronized void removeFencesAPPLE(int n, IntBuffer ids) { remove(getList(FENCES_APPLE), n, ids); } // glDeleteFencesAPPLE public synchronized void removeFencesAPPLE(int n, int[] ids, int ids_offset) { remove(getList(FENCES_APPLE), n, ids, ids_offset); } // glDeleteFencesNV public synchronized void removeFencesNV(int n, IntBuffer ids) { remove(getList(FENCES_NV), n, ids); } // glDeleteFencesNV public synchronized void removeFencesNV(int n, int[] ids, int ids_offset) { remove(getList(FENCES_NV), n, ids, ids_offset); } // glDeleteFragmentShaderATI public synchronized void removeFragmentShaderATI(int obj) { remove(getList(FRAGMENT_SHADERS_ATI), obj, 1); } // glDeleteFramebuffersEXT public synchronized void removeFramebuffersEXT(int n, IntBuffer ids) { remove(getList(FRAMEBUFFERS_EXT), n, ids); } // glDeleteFramebuffersEXT public synchronized void removeFramebuffersEXT(int n, int[] ids, int ids_offset) { remove(getList(FRAMEBUFFERS_EXT), n, ids, ids_offset); } // glDeleteLists public synchronized void removeLists(int start, int n) { remove(getList(LISTS), start, n); } // glDeleteOcclusionQueriesNV public synchronized void removeOcclusionQueriesNV(int n, IntBuffer ids) { remove(getList(OCCLUSION_QUERIES_NV), n, ids); } // glDeleteOcclusionQueriesNV public synchronized void removeOcclusionQueriesNV(int n, int[] ids, int ids_offset) { remove(getList(OCCLUSION_QUERIES_NV), n, ids, ids_offset); } // glDeleteProgram public synchronized void removeProgramObject(int obj) { remove(getList(PROGRAM_OBJECTS), obj, 1); } // glDeleteObjectARB public synchronized void removeProgramOrShaderObjectARB(int obj) { remove(getList(PROGRAM_AND_SHADER_OBJECTS_ARB), obj, 1); } // glDeleteProgramsARB public synchronized void removeProgramsARB(int n, IntBuffer ids) { remove(getList(PROGRAMS_ARB), n, ids); } // glDeleteProgramsARB public synchronized void removeProgramsARB(int n, int[] ids, int ids_offset) { remove(getList(PROGRAMS_ARB), n, ids, ids_offset); } // glDeleteProgramsNV public synchronized void removeProgramsNV(int n, IntBuffer ids) { remove(getList(PROGRAMS_NV), n, ids); } // glDeleteProgramsNV public synchronized void removeProgramsNV(int n, int[] ids, int ids_offset) { remove(getList(PROGRAMS_NV), n, ids, ids_offset); } // glDeleteQueries public synchronized void removeQueries(int n, IntBuffer ids) { remove(getList(QUERIES), n, ids); } // glDeleteQueries public synchronized void removeQueries(int n, int[] ids, int ids_offset) { remove(getList(QUERIES), n, ids, ids_offset); } // glDeleteQueriesARB public synchronized void removeQueriesARB(int n, IntBuffer ids) { remove(getList(QUERIES_ARB), n, ids); } // glDeleteQueriesARB public synchronized void removeQueriesARB(int n, int[] ids, int ids_offset) { remove(getList(QUERIES_ARB), n, ids, ids_offset); } // glDeleteRenderbuffersEXT public synchronized void removeRenderbuffersEXT(int n, IntBuffer ids) { remove(getList(RENDERBUFFERS_EXT), n, ids); } // glDeleteRenderbuffersEXT public synchronized void removeRenderbuffersEXT(int n, int[] ids, int ids_offset) { remove(getList(RENDERBUFFERS_EXT), n, ids, ids_offset); } // glDeleteShader public synchronized void removeShaderObject(int obj) { remove(getList(SHADER_OBJECTS), obj, 1); } // glDeleteTextures public synchronized void removeTextures(int n, IntBuffer ids) { remove(getList(TEXTURES), n, ids); } // glDeleteTextures public synchronized void removeTextures(int n, int[] ids, int ids_offset) { remove(getList(TEXTURES), n, ids, ids_offset); } // glDeleteVertexArraysAPPLE public synchronized void removeVertexArraysAPPLE(int n, IntBuffer ids) { remove(getList(VERTEX_ARRAYS_APPLE), n, ids); } // glDeleteVertexArraysAPPLE public synchronized void removeVertexArraysAPPLE(int n, int[] ids, int ids_offset) { remove(getList(VERTEX_ARRAYS_APPLE), n, ids, ids_offset); } // glDeleteVertexShaderEXT public synchronized void removeVertexShaderEXT(int obj) { remove(getList(VERTEX_SHADERS_EXT), obj, 1); } //---------------------------------------------------------------------- // Reference count maintenance and manual deletion // public synchronized void transferAll(GLObjectTracker other) { for (int i = 0; i < lists.length; i++) { getList(i).addAll(other.lists[i]); if (other.lists[i] != null) { other.lists[i].clear(); } } dirty = true; } public synchronized void ref() { ++refCount; } public void unref(GLObjectTracker deletedObjectPool) { boolean tryDelete = false; synchronized (this) { if (--refCount == 0) { tryDelete = true; } } if (tryDelete) { // See whether we should try to do the work now or whether we // have to postpone GLContext cur = GLContext.getCurrent(); if ((cur != null) && (cur instanceof GLContextImpl)) { GLContextImpl curImpl = (GLContextImpl) cur; if (deletedObjectPool != null && deletedObjectPool == curImpl.getDeletedObjectTracker()) { // Should be safe to delete these objects now try { delete((GL2)curImpl.getGL()); return; } catch (GLException e) { // Shouldn't happen, but if it does, transfer all objects // to the deleted object pool hoping we can later clean // them up deletedObjectPool.transferAll(this); throw(e); } } } // If we get here, we couldn't attempt to delete the objects // right now; instead try to transfer them to the // deletedObjectPool for later cleanup (FIXME: should consider // throwing an exception if deletedObjectPool is null, since // that shouldn't happen) if (DEBUG) { String s = null; if (cur == null) { s = "current context was null"; } else if (!(cur instanceof GLContextImpl)) { s = "current context was not a GLContextImpl"; } else if (deletedObjectPool == null) { s = "no current deletedObjectPool"; } else if (deletedObjectPool != ((GLContextImpl) cur).getDeletedObjectTracker()) { s = "deletedObjectTracker didn't match"; if (((GLContextImpl) cur).getDeletedObjectTracker() == null) { s += " (other was null)"; } } else { s = "unknown reason"; } System.err.println("Deferred destruction of server-side OpenGL objects into " + deletedObjectPool + ": " + s); } if (deletedObjectPool != null) { deletedObjectPool.transferAll(this); } } } public void clean(GL2 gl) { if (dirty) { try { delete(gl); dirty = false; } catch (GLException e) { // FIXME: not sure what to do here; probably a bad idea to be // throwing exceptions during an otherwise-successful makeCurrent } } } //---------------------------------------------------------------------- // Internals only below this point // // Kinds of sharable server-side OpenGL objects this class tracks private static final int BUFFERS = 0; private static final int BUFFERS_ARB = 1; private static final int FENCES_APPLE = 2; private static final int FENCES_NV = 3; private static final int FRAGMENT_SHADERS_ATI = 4; private static final int FRAMEBUFFERS_EXT = 5; private static final int LISTS = 6; private static final int OCCLUSION_QUERIES_NV = 7; private static final int PROGRAM_AND_SHADER_OBJECTS_ARB = 8; private static final int PROGRAM_OBJECTS = 9; private static final int PROGRAMS_ARB = 10; private static final int PROGRAMS_NV = 11; private static final int QUERIES = 12; private static final int QUERIES_ARB = 13; private static final int RENDERBUFFERS_EXT = 14; private static final int SHADER_OBJECTS = 15; private static final int TEXTURES = 16; private static final int VERTEX_ARRAYS_APPLE = 17; private static final int VERTEX_SHADERS_EXT = 18; private static final int NUM_OBJECT_TYPES = 19; static abstract class Deleter { public abstract void delete(GL2 gl, int obj); } static class ObjectList { private static final int MIN_CAPACITY = 4; private int size; private int capacity; private int[] data; private Deleter deleter; private String name; public ObjectList(Deleter deleter) { this.deleter = deleter; clear(); } public void add(int obj) { if (size == capacity) { int newCapacity = 2 * capacity; int[] newData = new int[newCapacity]; System.arraycopy(data, 0, newData, 0, size); data = newData; capacity = newCapacity; } data[size++] = obj; } public void addAll(ObjectList other) { if (other == null) { return; } for (int i = 0; i < other.size; i++) { add(other.data[i]); } } public boolean remove(int value) { for (int i = 0; i < size; i++) { if (data[i] == value) { if (i < size - 1) { System.arraycopy(data, i+1, data, i, size - i - 1); } --size; if ((size < capacity / 4) && (capacity > MIN_CAPACITY)) { int newCapacity = capacity / 4; if (newCapacity < MIN_CAPACITY) { newCapacity = MIN_CAPACITY; } int[] newData = new int[newCapacity]; System.arraycopy(data, 0, newData, 0, size); data = newData; capacity = newCapacity; } return true; } } return false; } public void setName(String name) { if (DEBUG) { this.name = name; } } public void delete(GL2 gl) { // Just in case we start throwing exceptions during deletion, // make sure we make progress rather than going into an infinite // loop while (size > 0) { int obj = data[size - 1]; --size; if (DEBUG) { System.err.println("Deleting server-side OpenGL object " + obj + ((name != null) ? (" (" + name + ")") : "")); } deleter.delete(gl, obj); } } public void clear() { size = 0; capacity = MIN_CAPACITY; data = new int[capacity]; } } private ObjectList[] lists = new ObjectList[NUM_OBJECT_TYPES]; private int refCount; private boolean dirty; private void add(ObjectList list, int n, IntBuffer ids) { int pos = ids.position(); for (int i = 0; i < n; i++) { list.add(ids.get(pos + i)); } } private void add(ObjectList list, int n, int[] ids, int ids_offset) { for (int i = 0; i < n; i++) { list.add(ids[i + ids_offset]); } } private void add(ObjectList list, int start, int n) { for (int i = 0; i < n; i++) { list.add(start + i); } } private void remove(ObjectList list, int n, IntBuffer ids) { int pos = ids.position(); for (int i = 0; i < n; i++) { list.remove(ids.get(pos + i)); } } private void remove(ObjectList list, int n, int[] ids, int ids_offset) { for (int i = 0; i < n; i++) { list.remove(ids[i + ids_offset]); } } private void remove(ObjectList list, int start, int n) { for (int i = 0; i < n; i++) { list.remove(start + i); } } private ObjectList getList(int which) { ObjectList list = lists[which]; if (list == null) { Deleter deleter = null; String name = null; // Figure out which deleter we need switch (which) { case BUFFERS: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteBuffers(1, new int[] { obj }, 0); } }; name = "buffer"; break; case BUFFERS_ARB: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteBuffersARB(1, new int[] { obj }, 0); } }; name = "ARB buffer"; break; case FENCES_APPLE: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteFencesAPPLE(1, new int[] { obj }, 0); } }; name = "APPLE fence"; break; case FENCES_NV: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteFencesNV(1, new int[] { obj }, 0); } }; name = "NV fence"; break; case FRAGMENT_SHADERS_ATI: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteFragmentShaderATI(obj); } }; name = "ATI fragment shader"; break; case FRAMEBUFFERS_EXT: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteFramebuffersEXT(1, new int[] { obj }, 0); } }; name = "EXT framebuffer"; break; case LISTS: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteLists(obj, 1); } }; name = "display list"; break; case OCCLUSION_QUERIES_NV: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteOcclusionQueriesNV(1, new int[] { obj }, 0); } }; name = "NV occlusion query"; break; case PROGRAM_AND_SHADER_OBJECTS_ARB: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteObjectARB(obj); } }; name = "ARB program or shader object"; break; case PROGRAM_OBJECTS: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteProgram(obj); } }; name = "program object"; break; case PROGRAMS_ARB: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteProgramsARB(1, new int[] { obj }, 0); } }; name = "ARB program object"; break; case PROGRAMS_NV: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteProgramsNV(1, new int[] { obj }, 0); } }; name = "NV program"; break; case QUERIES: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteQueries(1, new int[] { obj }, 0); } }; name = "query"; break; case QUERIES_ARB: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteQueriesARB(1, new int[] { obj }, 0); } }; name = "ARB query"; break; case RENDERBUFFERS_EXT: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteRenderbuffersEXT(1, new int[] { obj }, 0); } }; name = "EXT renderbuffer"; break; case SHADER_OBJECTS: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteShader(obj); } }; name = "shader object"; break; case TEXTURES: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteTextures(1, new int[] { obj }, 0); } }; name = "texture"; break; case VERTEX_ARRAYS_APPLE: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteVertexArraysAPPLE(1, new int[] { obj }, 0); } }; name = "APPLE vertex array"; break; case VERTEX_SHADERS_EXT: deleter = new Deleter() { public void delete(GL2 gl, int obj) { gl.glDeleteVertexShaderEXT(obj); } }; name = "EXT vertex shader"; break; default: throw new InternalError("Unexpected OpenGL object type " + which); } list = new ObjectList(deleter); list.setName(name); lists[which] = list; } return list; } private void delete(GL2 gl) { for (int i = 0; i < lists.length; i++) { ObjectList list = lists[i]; if (list != null) { list.delete(gl); lists[i] = null; } } } }





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