/**
* Copyright 2014 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:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions 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.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package jogamp.opengl;
import java.nio.Buffer;
import java.nio.ByteBuffer;
import java.nio.IntBuffer;
import com.jogamp.opengl.*;
import com.jogamp.common.ExceptionUtils;
import com.jogamp.common.nio.Buffers;
import com.jogamp.common.util.IntObjectHashMap;
import com.jogamp.common.util.PropertyAccess;
/**
* Tracking of {@link GLBufferStorage} instances via GL API callbacks.
* <p>
* See {@link GLBufferStorage} for generic details.
* </p>
* <p>
* Buffer storage is created via
* <ul>
* <li>{@link GL#glBufferData(int, long, java.nio.Buffer, int)} - storage recreation with target via {@link #createBufferStorage(GLBufferStateTracker, GL, int, long, Buffer, int, int, CreateStorageDispatch, long)}</li>
* <li>{@link GL2#glNamedBufferDataEXT(int, long, java.nio.Buffer, int)} - storage recreation, direct, via {@link #createBufferStorage(GL, int, long, Buffer, int, CreateStorageDispatch, long)}</li>
* <li>{@link GL4#glNamedBufferData(int, long, java.nio.Buffer, int)} - storage recreation, direct, via {@link #createBufferStorage(GL, int, long, Buffer, int, CreateStorageDispatch, long)}</li>
* <li>{@link GL4#glBufferStorage(int, long, Buffer, int)} - storage creation with target via {@link #createBufferStorage(GLBufferStateTracker, GL, int, long, Buffer, int, int, CreateStorageDispatch, long)}</li>
* <li>{@link GL4#glNamedBufferStorage(int, long, Buffer, int)} - storage recreation, direct, via {@link #createBufferStorage(GL, int, long, Buffer, int, CreateStorageDispatch, long)}</li>
* </ul>
* Note that storage <i>recreation</i> as mentioned above also invalidate a previous storage instance,
* i.e. disposed the buffer's current storage if exist and attaches a new storage instance.
* </p>
* <p>
* Buffers storage is disposed via
* <ul>
* <li>{@link GL#glDeleteBuffers(int, IntBuffer)} - explicit, direct, via {@link #notifyBuffersDeleted(int, IntBuffer)} or {@link #notifyBuffersDeleted(int, int[], int)}</li>
* <li>{@link GL#glBufferData(int, long, java.nio.Buffer, int)} - storage recreation via target</li>
* <li>{@link GL2#glNamedBufferDataEXT(int, long, java.nio.Buffer, int)} - storage recreation, direct</li>
* <li>{@link GL4#glNamedBufferData(int, long, java.nio.Buffer, int)} - storage recreation, direct</li>
* <li>{@link GL4#glBufferStorage(int, long, Buffer, int)} - storage recreation via target</li>
* <li>{@link GL4#glNamedBufferStorage(int, long, Buffer, int)} - storage recreation, direct</li>
* </ul>
* </p>
*
* <p>
* Implementation throws a {@link GLException} in all <i>construction</i> methods as listed below,
* if GL-function constraints are not met. <code>createBufferStorage</code> also throws an exception
* if the native GL-function fails.
* <ul>
* <li>{@link #createBufferStorage(GLBufferStateTracker, GL, int, long, Buffer, int, int, CreateStorageDispatch, long)}, etc ..</li>
* <li>{@link #mapBuffer(GLBufferStateTracker, GL, int, int, MapBufferAllDispatch, long)}, etc ..</li>
* </ul>
* In <i>destruction</i> and informal methods, i.e. all others, implementation only issues a WARNING debug message, if enabled.
* </p>
*
* <p>
* Buffer mapping methods like {@link GL#mapBuffer(int, int)} ...,
* require knowledge of the buffer's storage size as determined via it's creation with
* {@link GL#glBufferData(int, long, java.nio.Buffer, int)} ....
* </p>
* <p>
* Hence we track the OpenGL buffer's {@link GLBufferStorage} to be able to
* access the buffer's storage size. The tracked {@link GLBufferStorage} instances
* also allow users to conveniently access details of their created and maybe mapped buffer storage.
* </p>
* <p>
* The {@link GLBufferObjectTracker} and it's tracked {@link GLBufferStorage} instances
* maybe shared across multiple OpenGL context, hence this class is thread safe and employs synchronization.
* </p>
* <p>
* Implementation requires and utilizes a local {@link GLBufferStateTracker}
* to resolve the actual buffer-name bound to the given target.
* </p>
* <p>
* Note: This tracker requires to be notified about all OpenGL buffer storage operations,
* as well as the local {@link GLBufferStateTracker} to be notified about all
* OpenGL buffer binding operations.
* Hence buffer storage cannot be accessed properly if managed via native code.
* </p>
*/
public class GLBufferObjectTracker {
protected static final boolean DEBUG;
static {
Debug.initSingleton();
DEBUG = PropertyAccess.isPropertyDefined("jogl.debug.GLBufferObjectTracker", true);
}
static final class GLBufferStorageImpl extends GLBufferStorage {
GLBufferStorageImpl(final int name, final long size, final int mutableUsage, final int immutableFlags) {
super(name, size, mutableUsage, immutableFlags);
}
protected final void reset(final long size, final int mutableUsage, final int immutableFlags) {
super.reset(size, mutableUsage, immutableFlags);
}
protected final void setMappedBuffer(final ByteBuffer buffer) {
super.setMappedBuffer(buffer);
}
}
/**
* Map from buffer names to GLBufferObject.
*/
private final IntObjectHashMap bufferName2StorageMap;
public GLBufferObjectTracker() {
bufferName2StorageMap = new IntObjectHashMap();
bufferName2StorageMap.setKeyNotFoundValue(null);
}
public static interface CreateStorageDispatch {
void create(final int targetOrBufferName, final long size, final Buffer data, final int mutableUsageOrImmutableFlags);
}
/**
* Must be called when [re]creating the GL buffer object via {@link GL#glBufferData(int, long, java.nio.Buffer, int)}
* and {@link GL4#glBufferStorage(int, long, Buffer, int)},
* i.e. implies destruction of the buffer.
*
* @param bufferStateTracker
* @param caller
* @param target
* @param size
* @param mutableUsage <code>glBufferData</code>, <code>glNamedBufferData</code> usage
* @param immutableFlags <code>glBufferStorage</code> flags
* @throws GLException if buffer is not bound to target
* @throws GLException if size is less-or-eqaul zero for <code>glBufferStorage</code>, or size is less-than zero otherwise
* @throws GLException if a native GL-Error occurs
*/
public synchronized final void createBufferStorage(final GLBufferStateTracker bufferStateTracker, final GL caller,
final int target, final long size, final Buffer data, final int mutableUsage, final int immutableFlags,
final CreateStorageDispatch dispatch) throws GLException {
final int glerrPre = caller.glGetError(); // clear
if (DEBUG && GL.GL_NO_ERROR != glerrPre) {
System.err.printf("%s.%s glerr-pre 0x%X%n", msgClazzName, msgCreateBound, glerrPre);
}
final int bufferName = bufferStateTracker.getBoundBufferObject(target, caller);
if ( 0 == bufferName ) {
throw new GLException(String.format("%s: Buffer for target 0x%X not bound", GL_INVALID_OPERATION, target));
}
final boolean mutableBuffer = 0 != mutableUsage;
final boolean invalidSize = ( mutableBuffer && 0 > size ) // glBufferData, glNamedBufferData
|| ( !mutableBuffer && 0 >= size ); // glBufferStorage
if( invalidSize ) {
throw new GLException(String.format("%s: Invalid size %d for buffer %d on target 0x%X", GL_INVALID_VALUE, size, bufferName, target));
}
dispatch.create(target, size, data, mutableBuffer ? mutableUsage : immutableFlags);
final int glerrPost = caller.glGetError(); // be safe, catch failure!
if(GL.GL_NO_ERROR != glerrPost) {
throw new GLException(String.format("GL-Error 0x%X while creating %s storage for target 0x%X -> buffer %d of size %d with data %s",
glerrPost, mutableBuffer ? "mutable" : "immutable", target, bufferName, size, data));
}
final GLBufferStorageImpl objOld = (GLBufferStorageImpl) bufferName2StorageMap.get(bufferName);
if( null != objOld ) {
objOld.reset(size, mutableUsage, immutableFlags);
if (DEBUG) {
System.err.printf("%s.%s target: 0x%X -> reset %d: %s%n", msgClazzName, msgCreateBound, target, bufferName, objOld);
}
} else {
final GLBufferStorageImpl objNew = new GLBufferStorageImpl(bufferName, size, mutableUsage, immutableFlags);
bufferName2StorageMap.put(bufferName, objNew);
if (DEBUG) {
System.err.printf("%s.%s target: 0x%X -> new %d: %s%n", msgClazzName, msgCreateBound, target, bufferName, objNew);
}
}
}
/**
* Must be called when [re]creating the GL buffer object
* via {@link GL2#glNamedBufferDataEXT(int, long, java.nio.Buffer, int) glNamedBufferDataEXT},
* {@link GL4#glNamedBufferData(int, long, java.nio.Buffer, int) glNamedBufferData},
* and {@link GL4#glNamedBufferStorage(int, long, Buffer, int)},
* i.e. implies destruction of the buffer.
*
* @param bufferName
* @param size
* @param mutableUsage
* @throws GLException if size is less-than zero
* @throws GLException if a native GL-Error occurs
*/
public synchronized final void createBufferStorage(final GL caller,
final int bufferName, final long size, final Buffer data, final int mutableUsage, final int immutableFlags,
final CreateStorageDispatch dispatch) throws GLException {
final int glerrPre = caller.glGetError(); // clear
if (DEBUG && GL.GL_NO_ERROR != glerrPre) {
System.err.printf("%s.%s glerr-pre 0x%X%n", msgClazzName, msgCreateNamed, glerrPre);
}
if ( 0 > size ) { // glBufferData, glNamedBufferData
throw new GLException(String.format("%s: Invalid size %d for buffer %d", GL_INVALID_VALUE, size, bufferName));
}
final boolean mutableBuffer = 0 != mutableUsage;
if( !mutableBuffer ) {
throw new InternalError("Immutable glNamedBufferStorage not supported yet");
}
dispatch.create(bufferName, size, data, mutableUsage);
final int glerrPost = caller.glGetError(); // be safe, catch failure!
if(GL.GL_NO_ERROR != glerrPost) {
throw new GLException(String.format("GL-Error 0x%X while creating %s storage for buffer %d of size %d with data %s",
glerrPost, "mutable", bufferName, size, data));
}
final GLBufferStorageImpl objOld = (GLBufferStorageImpl) bufferName2StorageMap.get(bufferName);
if( null != objOld ) {
objOld.reset(size, mutableUsage, immutableFlags);
if (DEBUG) {
System.err.printf("%s.%s direct: reset %d: %s%n", msgClazzName, msgCreateNamed, bufferName, objOld);
}
} else {
final GLBufferStorageImpl objNew = new GLBufferStorageImpl(bufferName, size, mutableUsage, immutableFlags);
bufferName2StorageMap.put(bufferName, objNew);
if (DEBUG) {
System.err.printf("%s.%s direct: new %d: %s%n", msgClazzName, msgCreateNamed, bufferName, objNew);
}
}
}
/**
* Must be called when deleting GL buffer objects vis <code>glDeleteBuffers</code>.
* @param count
* @param bufferNames
* @param offset
*/
public synchronized final void notifyBuffersDeleted(final int count, final int[] bufferNames, final int offset) {
for(int i=0; i<count; i++) {
notifyBufferDeleted(bufferNames[i+offset], i, count);
}
}
/**
* Must be called when deleting GL buffer objects vis <code>glDeleteBuffers</code>.
* @param n
* @param bufferNames
*/
public synchronized final void notifyBuffersDeleted(final int n, final IntBuffer bufferNames) {
final int offset = bufferNames.position();
for(int i=0; i<n; i++) {
notifyBufferDeleted(bufferNames.get(i+offset), i, n);
}
}
/**
* Must be called when deleting GL buffer objects vis {@link GL#glDeleteBuffers(int, IntBuffer)}.
* @param bufferName
* @param i
* @param count
*/
private synchronized final void notifyBufferDeleted(final int bufferName, final int i, final int count) {
final GLBufferStorageImpl objOld = (GLBufferStorageImpl) bufferName2StorageMap.put(bufferName, null);
if (DEBUG) {
System.err.printf("%s.notifyBuffersDeleted()[%d/%d]: %d: %s -> null%n", msgClazzName, i+1, count, bufferName, objOld);
}
if( null == objOld ) {
if (DEBUG) {
System.err.printf("%s: %s.notifyBuffersDeleted()[%d/%d]: Buffer %d not tracked%n", warning, msgClazzName, i+1, count, bufferName);
ExceptionUtils.dumpStack(System.err);
}
return;
}
objOld.setMappedBuffer(null);
}
public static interface MapBufferDispatch {
ByteBuffer allocNioByteBuffer(final long addr, final long length);
}
public static interface MapBufferRangeDispatch extends MapBufferDispatch {
long mapBuffer(final int targetOrBufferName, final long offset, final long length, final int access);
}
public static interface MapBufferAllDispatch extends MapBufferDispatch {
long mapBuffer(final int targetOrBufferName, final int access);
}
private static final String GL_INVALID_OPERATION = "GL_INVALID_OPERATION";
private static final String GL_INVALID_VALUE = "GL_INVALID_VALUE";
/**
* Must be called when mapping GL buffer objects via {@link GL#mapBuffer(int, int)}.
* @throws GLException if buffer is not bound to target
* @throws GLException if buffer is not tracked
* @throws GLException if buffer is already mapped
* @throws GLException if buffer has invalid store size, i.e. less-than zero
*/
public synchronized final GLBufferStorage mapBuffer(final GLBufferStateTracker bufferStateTracker,
final GL caller, final int target, final int access,
final MapBufferAllDispatch dispatch) throws GLException {
return this.mapBufferImpl(bufferStateTracker, caller, target, false /* useRange */, 0 /* offset */, 0 /* length */, access, dispatch);
}
/**
* Must be called when mapping GL buffer objects via {@link GL#mapBufferRange(int, long, long, int)}.
* @throws GLException if buffer is not bound to target
* @throws GLException if buffer is not tracked
* @throws GLException if buffer is already mapped
* @throws GLException if buffer has invalid store size, i.e. less-than zero
* @throws GLException if buffer mapping range does not fit, incl. offset
*/
public synchronized final GLBufferStorage mapBuffer(final GLBufferStateTracker bufferStateTracker,
final GL caller, final int target, final long offset, final long length, final int access,
final MapBufferRangeDispatch dispatch) throws GLException {
return this.mapBufferImpl(bufferStateTracker, caller, target, true /* useRange */, offset, length, access, dispatch);
}
/**
* Must be called when mapping GL buffer objects via {@link GL2#mapNamedBufferEXT(int, int)}.
* @throws GLException if buffer is not tracked
* @throws GLException if buffer is already mapped
* @throws GLException if buffer has invalid store size, i.e. less-than zero
*/
public synchronized final GLBufferStorage mapBuffer(final int bufferName, final int access, final MapBufferAllDispatch dispatch) throws GLException {
return this.mapBufferImpl(0 /* target */, bufferName, true /* isNamedBuffer */, false /* useRange */, 0 /* offset */, 0 /* length */, access, dispatch);
}
/**
* Must be called when mapping GL buffer objects via {@link GL2#mapNamedBufferRangeEXT(int, long, long, int)}.
* @throws GLException if buffer is not tracked
* @throws GLException if buffer is already mapped
* @throws GLException if buffer has invalid store size, i.e. less-than zero
* @throws GLException if buffer mapping range does not fit, incl. offset
*/
public synchronized final GLBufferStorage mapBuffer(final int bufferName, final long offset, final long length, final int access, final MapBufferRangeDispatch dispatch) throws GLException {
return this.mapBufferImpl(0 /* target */, bufferName, true /* isNamedBuffer */, true /* useRange */, offset, length, access, dispatch);
}
/**
* @throws GLException if buffer is not bound to target
* @throws GLException if buffer is not tracked
* @throws GLException if buffer is already mapped
* @throws GLException if buffer has invalid store size, i.e. less-than zero
* @throws GLException if buffer mapping range does not fit, incl. optional offset
*/
private synchronized final GLBufferStorage mapBufferImpl(final GLBufferStateTracker bufferStateTracker,
final GL caller, final int target, final boolean useRange,
final long offset, final long length, final int access,
final MapBufferDispatch dispatch) throws GLException {
final int bufferName = bufferStateTracker.getBoundBufferObject(target, caller);
if( 0 == bufferName ) {
throw new GLException(String.format("%s.%s: %s Buffer for target 0x%X not bound", msgClazzName, msgMapBuffer, GL_INVALID_OPERATION, target));
}
return this.mapBufferImpl(target, bufferName, false /* isNamedBuffer */, useRange, offset, length, access, dispatch);
}
/**
* <p>
* A zero store size will avoid a native call and returns the unmapped {@link GLBufferStorage}.
* </p>
* <p>
* A null native mapping result indicating an error will
* not cause a GLException but returns the unmapped {@link GLBufferStorage}.
* This allows the user to handle this case.
* </p>
* @throws GLException if buffer is not tracked
* @throws GLException if buffer is already mapped
* @throws GLException if buffer has invalid store size, i.e. less-than zero
* @throws GLException if buffer mapping range does not fit, incl. optional offset
*/
private synchronized final GLBufferStorage mapBufferImpl(final int target, final int bufferName, final boolean isNamedBuffer, final boolean useRange, long offset,
long length, final int access, final MapBufferDispatch dispatch) throws GLException {
final GLBufferStorageImpl store = (GLBufferStorageImpl)bufferName2StorageMap.get(bufferName);
if ( null == store ) {
throw new GLException("Buffer with name "+bufferName+" not tracked");
}
if( null != store.getMappedBuffer() ) {
throw new GLException(String.format("%s.%s: %s Buffer storage of target 0x%X -> %d: %s is already mapped", msgClazzName, msgMapBuffer, GL_INVALID_OPERATION, target, bufferName, store));
}
final long storeSize = store.getSize();
if ( 0 > storeSize ) {
throw new GLException(String.format("%s.%s: %s Buffer storage of target 0x%X -> %d: %s is of less-than zero", msgClazzName, msgMapBuffer, GL_INVALID_OPERATION, target, bufferName, store));
}
if( !useRange ) {
length = storeSize;
offset = 0;
}
if( length + offset > storeSize ) {
throw new GLException(String.format("%s.%s: %s Out of range: offset %d, length %d, buffer storage of target 0x%X -> %d: %s", msgClazzName, msgMapBuffer, GL_INVALID_VALUE, offset, length, target, bufferName, store));
}
if( 0 >= length || 0 > offset ) {
throw new GLException(String.format("%s.%s: %s Invalid values: offset %d, length %d, buffer storage of target 0x%X -> %d: %s", msgClazzName, msgMapBuffer, GL_INVALID_VALUE, offset, length, target, bufferName, store));
}
if( 0 == storeSize ) {
return store;
}
final long addr;
if( isNamedBuffer ) {
if( useRange ) {
addr = ((MapBufferRangeDispatch)dispatch).mapBuffer(bufferName, offset, length, access);
} else {
addr = ((MapBufferAllDispatch)dispatch).mapBuffer(bufferName, access);
}
} else {
if( useRange ) {
addr = ((MapBufferRangeDispatch)dispatch).mapBuffer(target, offset, length, access);
} else {
addr = ((MapBufferAllDispatch)dispatch).mapBuffer(target, access);
}
}
// GL's map-buffer implementation always returns NULL on error,
// user shall validate the result and the corresponding getGLError() value!
if ( 0 == addr ) {
if( DEBUG ) {
System.err.printf("%s.%s: %s MapBuffer null result for target 0x%X -> %d: %s, off %d, len %d, acc 0x%X%n", msgClazzName, msgMapBuffer, warning, target, bufferName, store, offset, length, access);
ExceptionUtils.dumpStack(System.err);
}
// User shall handle the glError !
} else {
final ByteBuffer buffer = dispatch.allocNioByteBuffer(addr, length);
Buffers.nativeOrder(buffer);
if( DEBUG ) {
System.err.printf("%s.%s: Target 0x%X -> %d: %s, off %d, len %d, acc 0x%X%n", msgClazzName, msgClazzName, target, bufferName, store.toString(false), offset, length, access);
}
store.setMappedBuffer(buffer);
}
return store;
}
public static interface UnmapBufferDispatch {
boolean unmap(final int targetOrBufferName);
}
/**
* Must be called when unmapping GL buffer objects via {@link GL#glUnmapBuffer(int)}.
* <p>
* Only clear mapped buffer reference of {@link GLBufferStorage}
* if native unmapping was successful.
* </p>
*/
public synchronized final boolean unmapBuffer(final GLBufferStateTracker bufferStateTracker, final GL caller,
final int target,
final UnmapBufferDispatch dispatch) {
final int bufferName = bufferStateTracker.getBoundBufferObject(target, caller);
final GLBufferStorageImpl store;
if( 0 == bufferName ) {
if (DEBUG) {
System.err.printf("%s: %s.%s: Buffer for target 0x%X not bound%n", warning, msgClazzName, msgUnmapped, target);
ExceptionUtils.dumpStack(System.err);
}
store = null;
} else {
store = (GLBufferStorageImpl) bufferName2StorageMap.get(bufferName);
if( DEBUG && null == store ) {
System.err.printf("%s: %s.%s: Buffer %d not tracked%n", warning, msgClazzName, msgUnmapped, bufferName);
ExceptionUtils.dumpStack(System.err);
}
}
final boolean res = dispatch.unmap(target);
if( res && null != store ) {
store.setMappedBuffer(null);
}
if( DEBUG ) {
System.err.printf("%s.%s %s target: 0x%X -> %d: %s%n", msgClazzName, msgUnmapped, res ? "OK" : "Failed", target, bufferName, store.toString(false));
if(!res) {
ExceptionUtils.dumpStack(System.err);
}
}
return res;
}
/**
* Must be called when unmapping GL buffer objects via {@link GL2#glUnmapNamedBuffer(int)}.
* <p>
* Only clear mapped buffer reference of {@link GLBufferStorage}
* if native unmapping was successful.
* </p>
*/
public synchronized final boolean unmapBuffer(final int bufferName,
final UnmapBufferDispatch dispatch) {
final GLBufferStorageImpl store = (GLBufferStorageImpl) bufferName2StorageMap.get(bufferName);
if (DEBUG && null == store ) {
System.err.printf("%s: %s.%s: Buffer %d not tracked%n", warning, msgClazzName, msgUnmapped, bufferName);
ExceptionUtils.dumpStack(System.err);
}
final boolean res = dispatch.unmap(bufferName);
if( res && null != store ) {
store.setMappedBuffer(null);
}
if (DEBUG) {
System.err.printf("%s.%s %s %d: %s%n", msgClazzName, msgUnmapped, res ? "OK" : "Failed", bufferName, store.toString(false));
if(!res) {
ExceptionUtils.dumpStack(System.err);
}
}
return res;
}
public synchronized final GLBufferStorage getBufferStorage(final int bufferName) {
return (GLBufferStorageImpl)bufferName2StorageMap.get(bufferName);
}
/**
* Clear all tracked buffer object knowledge.
* <p>
* Shall only be called at GLContext destruction <i>iff</i>
* there are no other shared GLContext instances left.
* </p>
*/
public synchronized final void clear() {
if (DEBUG) {
System.err.printf("%s.clear() - Thread %s%n", msgClazzName, Thread.currentThread().getName());
// ExceptionUtils.dumpStackTrace(System.err);
}
bufferName2StorageMap.clear();
}
private static final String warning = "WARNING";
private static final String msgClazzName = "GLBufferObjectTracker";
private static final String msgUnmapped = "notifyBufferUnmapped()";
private static final String msgCreateBound = "createBoundBufferStorage()";
private static final String msgCreateNamed = "createNamedBufferStorage()";
private static final String msgMapBuffer = "mapBuffer()";
}