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      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 
     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