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package com.sun.opengl.impl;
import javax.media.opengl.*;
import javax.media.opengl.glsl.ShaderState;
import java.nio.*;
public class GLFixedArrayHandler implements GLArrayHandler {
private GLArrayDataEditable ad;
public GLFixedArrayHandler(GLArrayDataEditable ad) {
this.ad = ad;
}
protected final void passArrayPointer(GL gl) {
switch(ad.getIndex()) {
case GL.GL_VERTEX_ARRAY:
gl.glVertexPointer(ad);
break;
case GL.GL_NORMAL_ARRAY:
gl.glNormalPointer(ad);
break;
case GL.GL_COLOR_ARRAY:
gl.glColorPointer(ad);
break;
case GL.GL_TEXTURE_COORD_ARRAY:
gl.glTexCoordPointer(ad);
break;
default:
throw new GLException("invalid glArrayIndex: "+ad.getIndex()+":\n\t"+ad);
}
}
public void enableBuffer(GL gl, boolean enable) {
if(enable) {
gl.glEnableClientState(ad.getIndex());
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
gl.glBindBuffer(GL.GL_ARRAY_BUFFER, ad.getVBOName());
if(!ad.isBufferWritten()) {
if(null!=buffer) {
gl.glBufferData(GL.GL_ARRAY_BUFFER, buffer.limit() * ad.getComponentSize(), buffer, ad.getBufferUsage());
}
ad.setBufferWritten(true);
}
passArrayPointer(gl);
} else if(null!=buffer) {
passArrayPointer(gl);
ad.setBufferWritten(true);
}
} else {
if(ad.isVBO()) {
gl.glBindBuffer(GL.GL_ARRAY_BUFFER, 0);
}
gl.glDisableClientState(ad.getIndex());
}
}
}
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