/**
* Copyright (c) 2008-2012 Ardor Labs, Inc.
*
* This file is part of Ardor3D.
*
* Ardor3D is free software: you can redistribute it and/or modify it
* under the terms of its license which may be found in the accompanying
* LICENSE file or at <http://www.ardor3d.com/LICENSE>.
*/
package com.ardor3d.util.shader.uniformtypes;
import java.io.IOException;
import java.nio.IntBuffer;
import com.ardor3d.scenegraph.IntBufferData;
import com.ardor3d.util.export.InputCapsule;
import com.ardor3d.util.export.OutputCapsule;
import com.ardor3d.util.shader.ShaderVariable;
/** ShaderVariablePointerInt */
public class ShaderVariablePointerInt extends ShaderVariable {
/**
* Specifies the number of values for each element of the generic vertex attribute array. Must be 1, 2, 3, or 4.
*/
public int size;
/**
* Specifies the byte offset between consecutive attribute values. If stride is 0 (the initial value), the attribute
* values are understood to be tightly packed in the array.
*/
public int stride;
/**
* Specifies whether fixed-point data values should be normalized (true) or converted directly as fixed-point values
* (false) when they are accessed.
*/
public boolean normalized;
/** Specifies if the data is in signed or unsigned format */
public boolean unsigned;
/** The data for the attribute value */
public IntBufferData data;
@Override
public boolean hasData() {
return data != null && data.getBuffer() != null;
}
@Override
public void write(final OutputCapsule capsule) throws IOException {
super.write(capsule);
capsule.write(size, "size", 0);
capsule.write(stride, "stride", 0);
capsule.write(normalized, "normalized", false);
capsule.write(unsigned, "unsigned", false);
capsule.write(data, "data", null);
}
@Override
public void read(final InputCapsule capsule) throws IOException {
super.read(capsule);
size = capsule.readInt("size", 0);
stride = capsule.readInt("stride", 0);
normalized = capsule.readBoolean("normalized", false);
unsigned = capsule.readBoolean("unsigned", false);
data = (IntBufferData) capsule.readSavable("data", null);
// XXX: transitional
if (data == null) {
final IntBuffer buff = capsule.readIntBuffer("data", null);
if (buff != null) {
data = new IntBufferData(buff);
}
}
}
}