Java BufferUtils类代码示例

import org.andengine.opengl.util.BufferUtils; //导入依赖的package包/类
@Override
public void dispose() {
	super.dispose();

	try {
		SharedMemoryVertexBufferObject.sSharedByteBufferLock.lock();

		if (SharedMemoryVertexBufferObject.sSharedByteBuffer != null) {
			BufferUtils.freeDirectByteBuffer(SharedMemoryVertexBufferObject.sSharedByteBuffer);

			SharedMemoryVertexBufferObject.sSharedByteBuffer = null;
		}
	} finally {
		SharedMemoryVertexBufferObject.sSharedByteBufferLock.unlock();
	}
}
 

import org.andengine.opengl.util.BufferUtils; //导入依赖的package包/类
@Override
protected ByteBuffer aquireByteBuffer() {
	SharedMemoryVertexBufferObject.sSharedByteBufferLock.lock();

	final int byteCapacity = this.getByteCapacity();

	if (SharedMemoryVertexBufferObject.sSharedByteBuffer == null || SharedMemoryVertexBufferObject.sSharedByteBuffer.capacity() < byteCapacity) {
		if (SharedMemoryVertexBufferObject.sSharedByteBuffer != null) {
			BufferUtils.freeDirectByteBuffer(SharedMemoryVertexBufferObject.sSharedByteBuffer);
		}

		SharedMemoryVertexBufferObject.sSharedByteBuffer = BufferUtils.allocateDirectByteBuffer(byteCapacity);
		SharedMemoryVertexBufferObject.sSharedByteBuffer.order(ByteOrder.nativeOrder());
	}

	SharedMemoryVertexBufferObject.sSharedByteBuffer.limit(byteCapacity);

	return SharedMemoryVertexBufferObject.sSharedByteBuffer;
}
 

import org.andengine.opengl.util.BufferUtils; //导入依赖的package包/类
@Override
public void dispose() {
	super.dispose();

	try {
		SharedMemoryVertexBufferObject.sSharedByteBufferLock.lock();

		if(SharedMemoryVertexBufferObject.sSharedByteBuffer != null) {
			BufferUtils.freeDirectByteBuffer(SharedMemoryVertexBufferObject.sSharedByteBuffer);

			SharedMemoryVertexBufferObject.sSharedByteBuffer = null;
		}
	} finally {
		SharedMemoryVertexBufferObject.sSharedByteBufferLock.unlock();
	}
}
 

import org.andengine.opengl.util.BufferUtils; //导入依赖的package包/类
@Override
protected ByteBuffer aquireByteBuffer() {
	SharedMemoryVertexBufferObject.sSharedByteBufferLock.lock();

	final int byteCapacity = this.getByteCapacity();

	if(SharedMemoryVertexBufferObject.sSharedByteBuffer == null || SharedMemoryVertexBufferObject.sSharedByteBuffer.capacity() < byteCapacity) {
		if(SharedMemoryVertexBufferObject.sSharedByteBuffer != null) {
			BufferUtils.freeDirectByteBuffer(SharedMemoryVertexBufferObject.sSharedByteBuffer);
		}

		SharedMemoryVertexBufferObject.sSharedByteBuffer = BufferUtils.allocateDirectByteBuffer(byteCapacity);
		SharedMemoryVertexBufferObject.sSharedByteBuffer.order(ByteOrder.nativeOrder());
	}

	SharedMemoryVertexBufferObject.sSharedByteBuffer.limit(byteCapacity);

	return SharedMemoryVertexBufferObject.sSharedByteBuffer;
}
 

import org.andengine.opengl.util.BufferUtils; //导入依赖的package包/类
@Override
protected void onBufferData() {
	// TODO Check if, and how mow this condition affects performance.
	if (SystemUtils.SDK_VERSION_HONEYCOMB_OR_LATER) {
		// TODO Check if this is similar fast or faster than the non Honeycomb codepath.
		this.mFloatBuffer.position(0);
		this.mFloatBuffer.put(this.mBufferData);

		GLES20.glBufferData(GLES20.GL_ARRAY_BUFFER, this.mByteBuffer.capacity(), this.mByteBuffer, this.mUsage);
	} else {
		BufferUtils.put(this.mByteBuffer, this.mBufferData, this.mBufferData.length, 0);
		GLES20.glBufferData(GLES20.GL_ARRAY_BUFFER, this.mByteBuffer.limit(), this.mByteBuffer, this.mUsage);
	}
}
 

import org.andengine.opengl.util.BufferUtils; //导入依赖的package包/类
/**
 * @param pVertexBufferObjectManager (Optional, if you manage reloading on your own.)
 * @param pCapacity
 * @param pDrawType
 * @param pAutoDispose when passing <code>true</code> this {@link VertexBufferObject} loads itself to the active {@link VertexBufferObjectManager}. <b><u>WARNING:</u></b> When passing <code>false</code> one needs to take care of that by oneself!
 * @param pVertexBufferObjectAttributes to be automatically enabled on the {@link ShaderProgram} used in {@link #bind(ShaderProgram)}.
 */
public VertexBufferObject(final VertexBufferObjectManager pVertexBufferObjectManager, final int pCapacity, final DrawType pDrawType, final boolean pAutoDispose, final VertexBufferObjectAttributes pVertexBufferObjectAttributes) {
	this.mVertexBufferObjectManager = pVertexBufferObjectManager;
	this.mCapacity = pCapacity;
	this.mUsage = pDrawType.getUsage();
	this.mAutoDispose = pAutoDispose;
	this.mVertexBufferObjectAttributes = pVertexBufferObjectAttributes;

	this.mByteBuffer = BufferUtils.allocateDirectByteBuffer(pCapacity * DataConstants.BYTES_PER_FLOAT);

	this.mByteBuffer.order(ByteOrder.nativeOrder());
}
 

import org.andengine.opengl.util.BufferUtils; //导入依赖的package包/类
@Override
public void dispose() {
	if (!this.mDisposed) {
		this.mDisposed = true;

		if (this.mVertexBufferObjectManager != null) {
			this.mVertexBufferObjectManager.onUnloadVertexBufferObject(this);
		}

		BufferUtils.freeDirectByteBuffer(this.mByteBuffer);
	} else {
		throw new AlreadyDisposedException();
	}
}
 

import org.andengine.opengl.util.BufferUtils; //导入依赖的package包/类
/**
 * @param pVertexBufferObjectManager (Optional, if you manage reloading on your own.)
 * @param pCapacity
 * @param pDrawType
 * @param pAutoDispose when passing <code>true</code> this {@link org.andengine.opengl.vbo.VertexBufferObject} loads itself to the active {@link VertexBufferObjectManager}. <b><u>WARNING:</u></b> When passing <code>false</code> one needs to take care of that by oneself!
 * @param pVertexBufferObjectAttributes to be automatically enabled on the {@link ShaderProgram} used in {@link #bind(ShaderProgram)}.
 */
public VertexBufferObject(final VertexBufferObjectManager pVertexBufferObjectManager, final int pCapacity, final DrawType pDrawType, final boolean pAutoDispose, final VertexBufferObjectAttributes pVertexBufferObjectAttributes) {
	this.mVertexBufferObjectManager = pVertexBufferObjectManager;
	this.mCapacity = pCapacity;
	this.mUsage = pDrawType.getUsage();
	this.mAutoDispose = pAutoDispose;
	this.mVertexBufferObjectAttributes = pVertexBufferObjectAttributes;

	this.mByteBuffer = BufferUtils.allocateDirectByteBuffer(pCapacity * DataConstants.BYTES_PER_FLOAT);

	this.mByteBuffer.order(ByteOrder.nativeOrder());
}
 

import org.andengine.opengl.util.BufferUtils; //导入依赖的package包/类
@Override
protected void onBufferData() {
	// TODO Check if, and how mow this condition affects performance.
	if(SystemUtils.SDK_VERSION_HONEYCOMB_OR_LATER) {
		// TODO Check if this is similar fast or faster than the non Honeycomb codepath.
		this.mFloatBuffer.position(0);
		this.mFloatBuffer.put(this.mBufferData);

		GLES20.glBufferData(GLES20.GL_ARRAY_BUFFER, this.mByteBuffer.capacity(), this.mByteBuffer, this.mUsage);
	} else {
		BufferUtils.put(this.mByteBuffer, this.mBufferData, this.mBufferData.length, 0);
		GLES20.glBufferData(GLES20.GL_ARRAY_BUFFER, this.mByteBuffer.limit(), this.mByteBuffer, this.mUsage);
	}
}
 

import org.andengine.opengl.util.BufferUtils; //导入依赖的package包/类
/**
 * @param pVertexBufferObjectManager (Optional, if you manage reloading on your own.)
 * @param pCapacity
 * @param pDrawType
 * @param pAutoDispose when passing <code>true</code> this {@link VertexBufferObject} loads itself to the active {@link VertexBufferObjectManager}. <b><u>WARNING:</u></b> When passing <code>false</code> one needs to take care of that by oneself!
 * @param pVertexBufferObjectAttributes to be automatically enabled on the {@link ShaderProgram} used in {@link VertexBufferObject#bind(ShaderProgram)}.
 */
public VertexBufferObject(final VertexBufferObjectManager pVertexBufferObjectManager, final int pCapacity, final DrawType pDrawType, final boolean pAutoDispose, final VertexBufferObjectAttributes pVertexBufferObjectAttributes) {
	this.mVertexBufferObjectManager = pVertexBufferObjectManager;
	this.mCapacity = pCapacity;
	this.mUsage = pDrawType.getUsage();
	this.mAutoDispose = pAutoDispose;
	this.mVertexBufferObjectAttributes = pVertexBufferObjectAttributes;

	this.mByteBuffer = BufferUtils.allocateDirectByteBuffer(pCapacity * DataConstants.BYTES_PER_FLOAT);

	this.mByteBuffer.order(ByteOrder.nativeOrder());
}
 

import org.andengine.opengl.util.BufferUtils; //导入依赖的package包/类
@Override
public void dispose() {
	if(!this.mDisposed) {
		this.mDisposed = true;

		if(this.mVertexBufferObjectManager != null) {
			this.mVertexBufferObjectManager.onUnloadVertexBufferObject(this);
		}

		BufferUtils.freeDirectByteBuffer(this.mByteBuffer);
	} else {
		throw new AlreadyDisposedException();
	}
}
 

import org.andengine.opengl.util.BufferUtils; //导入依赖的package包/类
/**
 * When a non <code>null</code> {@link java.nio.ByteBuffer} is returned by this function, it is guaranteed that {@link #releaseByteBuffer(java.nio.ByteBuffer)} is called.
 * @return a {@link java.nio.ByteBuffer} to be passed to {@link #onPopulateBufferData(java.nio.ByteBuffer)}.
 */
protected ByteBuffer aquireByteBuffer() {
	final ByteBuffer byteBuffer = BufferUtils.allocateDirectByteBuffer(this.getByteCapacity());
	byteBuffer.order(ByteOrder.nativeOrder());
	return byteBuffer;
}
 

import org.andengine.opengl.util.BufferUtils; //导入依赖的package包/类
protected void releaseByteBuffer(final ByteBuffer pByteBuffer) {
	BufferUtils.freeDirectByteBuffer(pByteBuffer);
}
 

import org.andengine.opengl.util.BufferUtils; //导入依赖的package包/类
/**
 * When a non <code>null</code> {@link ByteBuffer} is returned by this function, it is guaranteed that {@link ZeroMemoryVertexBufferObject#releaseByteBuffer(ByteBuffer)} is called.
 * @return a {@link ByteBuffer} to be passed to {@link ZeroMemoryVertexBufferObject#onPopulateBufferData(ByteBuffer)}.
 */
protected ByteBuffer aquireByteBuffer() {
	final ByteBuffer byteBuffer = BufferUtils.allocateDirectByteBuffer(this.getByteCapacity());
	byteBuffer.order(ByteOrder.nativeOrder());
	return byteBuffer;
}