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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 com.jogamp.opengl.util.glsl;
import javax.media.opengl.*;
import com.jogamp.opengl.util.*;
import java.nio.*;
public class GLSLArrayHandler implements GLArrayHandler {
private GLArrayDataEditable ad;
public GLSLArrayHandler(GLArrayDataEditable ad) {
this.ad = ad;
}
protected final void passVertexAttribPointer(GL2ES2 gl, ShaderState st) {
st.glVertexAttribPointer(gl, ad);
}
public void enableBuffer(GL gl, boolean enable) {
if(!gl.isGL2ES2()) {
throw new GLException("GLSLArrayHandler expects a GL2ES2 implementation");
}
GL2ES2 glsl = gl.getGL2ES2();
ShaderState st = ShaderState.getCurrent();
if(null==st) {
throw new GLException("No ShaderState current");
}
if(enable) {
st.glEnableVertexAttribArray(glsl, ad.getName());
Buffer buffer = ad.getBuffer();
if(ad.isVBO()) {
// always bind and refresh the VBO mgr,
// in case more than one gl*Pointer objects are in use
glsl.glBindBuffer(GL.GL_ARRAY_BUFFER, ad.getVBOName());
if(!ad.isBufferWritten()) {
if(null!=buffer) {
glsl.glBufferData(GL.GL_ARRAY_BUFFER, buffer.limit() * ad.getComponentSize(), buffer, ad.getBufferUsage());
}
ad.setBufferWritten(true);
}
passVertexAttribPointer(glsl, st);
} else if(null!=buffer) {
passVertexAttribPointer(glsl, st);
ad.setBufferWritten(true);
}
} else {
if(ad.isVBO()) {
glsl.glBindBuffer(GL.GL_ARRAY_BUFFER, 0);
}
st.glDisableVertexAttribArray(glsl, ad.getName());
}
}
}
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