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 
33 package com.jme3.shader;
34 
35 import com.jme3.export.*;
36 import java.io.IOException;
37 
38 public 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 
write(JmeExporter ex)57     public void write(JmeExporter ex) throws IOException{
58         OutputCapsule oc = ex.getCapsule(this);
59         oc.write(name, "name", null);
60     }
61 
read(JmeImporter im)62     public void read(JmeImporter im) throws IOException{
63         InputCapsule ic = im.getCapsule(this);
64         name = ic.readString("name", null);
65     }
66 
setLocation(int location)67     public void setLocation(int location){
68         this.location = location;
69     }
70 
getLocation()71     public int getLocation(){
72         return location;
73     }
74 
setName(String name)75     public void setName(String name){
76         this.name = name;
77     }
78 
getName()79     public String getName(){
80         return name;
81     }
82 
83 }
84