1/*
2 * Copyright (c) 2009-2010 jMonkeyEngine
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 *   notice, this list of conditions and the following disclaimer.
11 *
12 * * Redistributions in binary form must reproduce the above copyright
13 *   notice, this list of conditions and the following disclaimer in the
14 *   documentation and/or other materials provided with the distribution.
15 *
16 * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
17 *   may be used to endorse or promote products derived from this software
18 *   without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33package com.jme3.shader;
34
35import com.jme3.export.*;
36import java.io.IOException;
37
38public class ShaderVariable implements Savable {
39
40    // if -2, location not known
41    // if -1, not defined in shader
42    // if >= 0, uniform defined and available.
43    protected int location = -2;
44
45    /**
46     * Name of the uniform as was declared in the shader.
47     * E.g name = "g_WorldMatrix" if the decleration was
48     * "uniform mat4 g_WorldMatrix;".
49     */
50    protected String name = null;
51
52    /**
53     * True if the shader value was changed.
54     */
55    protected boolean updateNeeded = true;;
56
57    public void write(JmeExporter ex) throws IOException{
58        OutputCapsule oc = ex.getCapsule(this);
59        oc.write(name, "name", null);
60    }
61
62    public void read(JmeImporter im) throws IOException{
63        InputCapsule ic = im.getCapsule(this);
64        name = ic.readString("name", null);
65    }
66
67    public void setLocation(int location){
68        this.location = location;
69    }
70
71    public int getLocation(){
72        return location;
73    }
74
75    public void setName(String name){
76        this.name = name;
77    }
78
79    public String getName(){
80        return name;
81    }
82
83}
84