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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.post;
     34 
     35 import com.jme3.asset.AssetManager;
     36 import com.jme3.material.Material;
     37 import com.jme3.material.RenderState;
     38 import com.jme3.material.RenderState.FaceCullMode;
     39 import com.jme3.renderer.RenderManager;
     40 import com.jme3.renderer.ViewPort;
     41 import com.jme3.renderer.queue.RenderQueue;
     42 import com.jme3.texture.FrameBuffer;
     43 
     44 /**
     45  * Processor that lays depth first, this can improve performance in complex
     46  * scenes.
     47  */
     48 public class PreDepthProcessor implements SceneProcessor {
     49 
     50     private RenderManager rm;
     51     private ViewPort vp;
     52     private AssetManager assetManager;
     53     private Material preDepth;
     54     private RenderState forcedRS;
     55 
     56     public PreDepthProcessor(AssetManager assetManager){
     57         this.assetManager = assetManager;
     58         preDepth = new Material(assetManager, "Common/MatDefs/Shadow/PreShadow.j3md");
     59         preDepth.getAdditionalRenderState().setPolyOffset(0, 0);
     60         preDepth.getAdditionalRenderState().setFaceCullMode(FaceCullMode.Back);
     61 
     62         forcedRS = new RenderState();
     63         forcedRS.setDepthTest(true);
     64         forcedRS.setDepthWrite(false);
     65     }
     66 
     67     public void initialize(RenderManager rm, ViewPort vp) {
     68         this.rm = rm;
     69         this.vp = vp;
     70     }
     71 
     72     public void reshape(ViewPort vp, int w, int h) {
     73         this.vp = vp;
     74     }
     75 
     76     public boolean isInitialized() {
     77         return vp != null;
     78     }
     79 
     80     public void preFrame(float tpf) {
     81     }
     82 
     83     public void postQueue(RenderQueue rq) {
     84         // lay depth first
     85         rm.setForcedMaterial(preDepth);
     86         rq.renderQueue(RenderQueue.Bucket.Opaque, rm, vp.getCamera(), false);
     87         rm.setForcedMaterial(null);
     88 
     89         rm.setForcedRenderState(forcedRS);
     90     }
     91 
     92     public void postFrame(FrameBuffer out) {
     93         rm.setForcedRenderState(null);
     94     }
     95 
     96     public void cleanup() {
     97         vp = null;
     98     }
     99 
    100 }
    101