1 /**
2  * Copyright 2010 JogAmp Community. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without modification, are
5  * permitted provided that the following conditions are met:
6  *
7  *    1. Redistributions of source code must retain the above copyright notice, this list of
8  *       conditions and the following disclaimer.
9  *
10  *    2. Redistributions in binary form must reproduce the above copyright notice, this list
11  *       of conditions and the following disclaimer in the documentation and/or other materials
12  *       provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
15  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
16  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
19  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
21  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
22  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23  *
24  * The views and conclusions contained in the software and documentation are those of the
25  * authors and should not be interpreted as representing official policies, either expressed
26  * or implied, of JogAmp Community.
27  */
28 
29 package jogamp.opengl.util;
30 
31 import java.nio.Buffer;
32 
33 import com.jogamp.opengl.GL;
34 
35 import com.jogamp.opengl.util.GLArrayDataEditable;
36 
37 /**
38  * Interleaved fixed function arrays, i.e. where this buffer data
39  * represents many arrays.
40  */
41 public abstract class GLVBOArrayHandler implements GLArrayHandler {
42   protected GLArrayDataEditable ad;
43 
GLVBOArrayHandler(final GLArrayDataEditable ad)44   public GLVBOArrayHandler(final GLArrayDataEditable ad) {
45     this.ad = ad;
46   }
47 
48   @Override
bindBuffer(final GL gl, final boolean bind)49   public final boolean bindBuffer(final GL gl, final boolean bind) {
50     if( !ad.isVBO() ) {
51         return false;
52     }
53     if(bind) {
54         // always bind and refresh the VBO mgr,
55         // in case more than one gl*Pointer objects are in use
56         gl.glBindBuffer(ad.getVBOTarget(), ad.getVBOName());
57         if(!ad.isVBOWritten()) {
58             final Buffer buffer = ad.getBuffer();
59             if(null!=buffer) {
60                 gl.glBufferData(ad.getVBOTarget(), buffer.limit() * ad.getComponentSizeInBytes(), buffer, ad.getVBOUsage());
61             }
62             ad.setVBOWritten(true);
63         }
64     } else {
65         gl.glBindBuffer(ad.getVBOTarget(), 0);
66     }
67     return true;
68   }
69 
70 }
71 
72