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/**
* Copyright 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:
*
* 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.util;
import javax.media.opengl.*;
/**
* Handles consistency of buffer data and array state.
* Implementations shall consider buffer types (VBO, ..), interleaved, etc.
* They also need to consider array state types, i.e. fixed function or GLSL.
*/
public interface GLArrayHandler {
/**
* if <code>bind</code> is true and the data uses VBO,
* the latter will be bound and data written to the GPU if required.
* <p>
* If <code>bind</code> is false and the data uses VBO,
* the latter will be unbound.
* </p>
*
* @param gl current GL object
* @param bind true if VBO shall be bound and data written,
* otherwise clear VBO binding.
* @return true if data uses VBO and action was performed, otherwise false
*/
public boolean bindBuffer(GL gl, boolean bind);
/**
* Implementation shall enable or disable the array state.
* <p>
* Before enabling the array state,
* implementation shall synchronize the data with the GPU
* and associate the data with the array.
* </p>
*
* @param gl current GL object
* @param enable true if array shall be enabled, otherwise false.
* @param ext extension object allowing passing of an implementation detail
*/
public void enableState(GL gl, boolean enable, Object ext);
/**
* Supporting interleaved arrays, where sub handlers may handle
* the array state and the <i>master</i> handler the buffer consistency.
*
* @param handler the sub handler
* @throws UnsupportedOperationException if this array handler does not support interleaved arrays
*/
public void addSubHandler(GLArrayHandlerFlat handler) throws UnsupportedOperationException;
public void setSubArrayVBOName(int vboName);
}
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