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diff --git a/src/jogl/classes/com/jogamp/opengl/impl/GLBufferStateTracker.java b/src/jogl/classes/com/jogamp/opengl/impl/GLBufferStateTracker.java
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--- a/src/jogl/classes/com/jogamp/opengl/impl/GLBufferStateTracker.java
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-/*
- * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
- * Copyright (c) 2010 JogAmp Community. 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
- * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
- * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
- * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
- * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
- * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- *
- * You acknowledge that this software is not designed or intended for use
- * in the design, construction, operation or maintenance of any nuclear
- * facility.
- *
- * Sun gratefully acknowledges that this software was originally authored
- * and developed by Kenneth Bradley Russell and Christopher John Kline.
- */
-
-package com.jogamp.opengl.impl;
-
-import javax.media.opengl.*;
-import com.jogamp.common.util.IntIntHashMap;
-
-/**
- * Tracks as closely as possible which OpenGL buffer object is bound
- * to which binding target in the current OpenGL context.
- * GLBufferStateTracker objects are allocated on a per-OpenGL-context basis.
- * This class is used to verify that e.g. the vertex
- * buffer object extension is in use when the glVertexPointer variant
- * taking a long as argument is called. <P>
- *
- * Note that because the enumerated value used for the binding of a
- * buffer object (e.g. GL_ARRAY_BUFFER) is different than that used to
- * query the binding using glGetIntegerv (e.g.
- * GL_ARRAY_BUFFER_BINDING), then in the face of new binding targets
- * being added to the GL (e.g. GL_TRANSFORM_FEEDBACK_BUFFER_NV) it is
- * impossible to set up a query of the buffer object currently bound
- * to a particular state. It turns out that for some uses, such as
- * finding the size of the currently bound buffer, this doesn't
- * matter, though of course without knowing the buffer object we can't
- * re-associate the queried size with the buffer object ID. <P>
- *
- * Because the namespace of buffer objects is the unsigned integers
- * with 0 reserved by the GL, and because we have to be able to return
- * both 0 and other integers as valid answers from
- * getBoundBufferObject(), we need a second query, which is to ask
- * whether we know the state of the binding for a given target. For
- * "unknown" targets such as GL_TRANSFORM_FEEDBACK_BUFFER_NV we return
- * false from this, but we also clear the valid bit and later refresh
- * the binding state if glPushClientAttrib / glPopClientAttrib are
- * called, since we don't want the complexity of tracking stacks of
- * these attributes.
- *
- */
-
-public class GLBufferStateTracker {
- protected static final boolean DEBUG = GLBufferSizeTracker.DEBUG;
-
- // Maps binding targets to buffer objects. A null value indicates
- // that the binding is unknown. A zero value indicates that it is
- // known that no buffer is bound to the target, according to the
- // OpenGL specifications.
- // http://www.opengl.org/sdk/docs/man/xhtml/glBindBuffer.xml
- private IntIntHashMap bindingMap;
-
- private int[] bufTmp = new int[1];
-
- public GLBufferStateTracker() {
- bindingMap = new IntIntHashMap();
- bindingMap.setKeyNotFoundValue(-1);
-
- // Start with known unbound targets for known keys
- bindingMap.put(GL.GL_ARRAY_BUFFER, 0);
- bindingMap.put(GL.GL_ELEMENT_ARRAY_BUFFER, 0);
- bindingMap.put(GL2.GL_PIXEL_PACK_BUFFER, 0);
- bindingMap.put(GL2.GL_PIXEL_UNPACK_BUFFER, 0);
- }
-
- public void setBoundBufferObject(int target, int buffer) {
- bindingMap.put(target, buffer);
- }
-
- /** Note: returns an unspecified value if the binding for the
- specified target (e.g. GL_ARRAY_BUFFER) is currently unknown.
- You must use isBoundBufferObjectKnown() to see whether the
- return value is valid. */
- public int getBoundBufferObject(int target, GL caller) {
- int value = bindingMap.get(target);
- if (0 > value) {
- // User probably either called glPushClientAttrib /
- // glPopClientAttrib or is querying an unknown target. See
- // whether we know how to fetch this state.
- boolean gotQueryTarget = true;
- int queryTarget = 0;
- switch (target) {
- case GL.GL_ARRAY_BUFFER: queryTarget = GL.GL_ARRAY_BUFFER_BINDING; break;
- case GL.GL_ELEMENT_ARRAY_BUFFER: queryTarget = GL.GL_ELEMENT_ARRAY_BUFFER_BINDING; break;
- case GL2.GL_PIXEL_PACK_BUFFER: queryTarget = GL2.GL_PIXEL_PACK_BUFFER_BINDING; break;
- case GL2.GL_PIXEL_UNPACK_BUFFER: queryTarget = GL2.GL_PIXEL_UNPACK_BUFFER_BINDING; break;
- default: gotQueryTarget = false; break;
- }
- if (gotQueryTarget) {
- caller.glGetIntegerv(queryTarget, bufTmp, 0);
- if (DEBUG) {
- System.err.println("GLBufferStateTracker.getBoundBufferObject(): queried bound buffer " +
- bufTmp[0] +
- " for query target 0x" + Integer.toHexString(queryTarget));
- }
- setBoundBufferObject(target, bufTmp[0]);
- return bufTmp[0];
- }
- return 0;
- }
- return value;
- }
-
- /** Indicates whether the binding state for the specified target is
- currently known, ie it could be bound or not but it must be tracked.<br>
- Should be called after getBoundBufferObject()
- because that method may change the answer for a given target. */
- public boolean isBoundBufferObjectKnown(int target) {
- return 0 < bindingMap.get(target) ;
- }
-
- /** Clears out the known/unknown state of the various buffer object
- binding states. These will be refreshed later on an as-needed
- basis. This is called by the implementations of
- glPushClientAttrib / glPopClientAttrib. Might want to call this
- from GLContext.makeCurrent() in the future to possibly increase
- the robustness of these caches in the face of external native
- code manipulating OpenGL state. */
- public void clearBufferObjectState() {
- bindingMap.clear();
- }
-}