src/jmetest/renderer/state/TestFragmentProgramState.java

   1 /*
   2  * Copyright (c) 2003-2009 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,
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  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 jmetest.renderer.state;
  34
  35 import java.nio.FloatBuffer;
  36 import java.util.logging.Logger;
  37
  38 import com.jme.app.SimpleGame;
  39 import com.jme.image.Texture;
  40 import com.jme.light.PointLight;
  41 import com.jme.math.FastMath;
  42 import com.jme.math.Vector3f;
  43 import com.jme.renderer.ColorRGBA;
  44 import com.jme.scene.Spatial;
  45 import com.jme.scene.TexCoords;
  46 import com.jme.scene.shape.Quad;
  47 import com.jme.scene.state.CullState;
  48 import com.jme.scene.state.FragmentProgramState;
  49 import com.jme.scene.state.TextureState;
  50 import com.jme.scene.state.VertexProgramState;
  51 import com.jme.util.TextureManager;
  52 import com.jme.util.geom.BufferUtils;
  53
  54
  55 /**
  56  * Demonstrates the use of the GL_ARB_fragment_program extension in jME. Uses a parallax
  57  * mapping technique outlined in the paper "Parallax Mapping with Offset Limiting:
  58  * A PerPixel Approximation of Uneven Surfaces".
  59  * @author Eric Woroshow
  60  * @version $Id: TestFragmentProgramState.java,v 1.11 2007/08/21 20:11:07 nca Exp $
  61  */
  62 public class TestFragmentProgramState extends SimpleGame {
  63     private static final Logger logger = Logger
  64             .getLogger(TestFragmentProgramState.class.getName());
  65
  66     private final static String BRICK_TEX = "jmetest/data/images/rockwall2.jpg";
  67     private final static String BRICK_HEIGHT = "jmetest/data/images/rockwall_height2.jpg";
  68     private final static String BRICK_NRML = "jmetest/data/images/rockwall_normal2.jpg";
  69     private final static String BRICK_VP = "jmetest/data/images/bump_parallax.vp";
  70     private final static String BRICK_FP = "jmetest/data/images/bump_parallax.fp";
  71
  72     /** Light positioning */
  73     private float angle0 = 0.0f, angle1 = 0.0f;
  74
  75     /**
  76      * Entry point for the test.
  77      * @param args command line arguments; unused
  78      */
  79     public static void main(String[] args) {
  80         TestFragmentProgramState app = new TestFragmentProgramState();
  81         app.setConfigShowMode(ConfigShowMode.AlwaysShow);
  82         app.start();
  83     }
  84
  85     private void initLights( ) {
  86         //Set up two lights in the scene
  87         PointLight light0 = new PointLight();
  88         light0.setDiffuse(new ColorRGBA(1.0f, 1.0f, 1.0f, 1.0f));
  89         light0.setLocation(new Vector3f(2f, 4f, 1f));
  90         light0.setEnabled(true);
  91
  92         PointLight light1 = new PointLight();
  93         light1.setDiffuse(new ColorRGBA(1.0f, 0.5f, 0.0f, 1.0f));
  94         light1.setLocation(new Vector3f(2f, 2f, 1f));
  95         light1.setEnabled(true);
  96
  97         lightState.detachAll();
  98         lightState.setEnabled(true);
  99         lightState.attach(light0);
 100         lightState.attach(light1);
 101         lightState.setGlobalAmbient(new ColorRGBA(0,0,0,1));
 102         rootNode.setRenderState(lightState);
 103     }
 104
 105     protected void simpleInitGame() {
 106         //Set up cull state
 107         CullState cs = display.getRenderer().createCullState();
 108         cs.setCullFace(CullState.Face.Back);
 109         cs.setEnabled(true);
 110
 111         //Basic brick texture
 112         TextureState brick = display.getRenderer().createTextureState();
 113
 114         Texture tex = TextureManager.loadTexture(
 115                            TestFragmentProgramState.class.getClassLoader().getResource(BRICK_TEX),
 116                            Texture.MinificationFilter.Trilinear,
 117                            Texture.MagnificationFilter.Bilinear);
 118         tex.setWrap(Texture.WrapMode.Repeat);
 119
 120         //Height map of the brick wall
 121         Texture height = TextureManager.loadTexture(
 122                             TestFragmentProgramState.class.getClassLoader().getResource(BRICK_HEIGHT),
 123                             Texture.MinificationFilter.Trilinear,
 124                             Texture.MagnificationFilter.Bilinear);
 125         height.setWrap(Texture.WrapMode.Repeat);
 126
 127         //Normal map of the brick wall
 128         Texture normal = TextureManager.loadTexture(
 129                             TestFragmentProgramState.class.getClassLoader().getResource(BRICK_NRML),
 130                             Texture.MinificationFilter.Trilinear,
 131                             Texture.MagnificationFilter.Bilinear);
 132         normal.setWrap(Texture.WrapMode.Repeat);
 133
 134         brick.setTexture(tex, 0);
 135         brick.setTexture(normal, 1);
 136         brick.setTexture(height, 2);
 137
 138         brick.setEnabled(true);
 139
 140         VertexProgramState vert = display.getRenderer().createVertexProgramState();
 141         FragmentProgramState frag = display.getRenderer().createFragmentProgramState();
 142         //Ensure the extensions are supported, else exit immediately
 143         if (!vert.isSupported() || !frag.isSupported()) {
 144             logger.severe("Your graphics card does not support vertex or fragment programs, and thus cannot run this test.");
 145             quit();
 146         }
 147
 148         //Load vertex program
 149         vert.load(TestFragmentProgramState.class.getClassLoader().getResource(BRICK_VP));
 150         vert.setEnabled(true);
 151
 152         //Load fragment program
 153         frag.load(TestFragmentProgramState.class.getClassLoader().getResource(BRICK_FP));
 154         frag.setEnabled(true);
 155
 156         Quad q = new Quad("wall", 10f, 10f);
 157
 158         //Set up textures
 159         q.setRenderState(brick);
 160
 161         FloatBuffer tex1 = BufferUtils.createVector2Buffer(4);
 162         for (int x = 0; x < 4; x++)
 163             tex1.put(1.0f).put(0.0f);
 164         q.setTextureCoords(new TexCoords(tex1), 1);
 165
 166         FloatBuffer tex2 = BufferUtils.createVector2Buffer(4);
 167         for (int x = 0; x < 4; x++)
 168             tex2.put(0.0f).put(1.0f);
 169         q.setTextureCoords(new TexCoords(tex2), 2);
 170
 171         //Set up ARB programs
 172         q.setRenderState(vert);
 173         q.setRenderState(frag);
 174
 175         q.setRenderState(cs);
 176
 177         initLights();
 178
 179         rootNode.attachChild(q);
 180         rootNode.setCullHint(Spatial.CullHint.Never);
 181     }
 182
 183     protected void simpleUpdate() {
 184         angle0 += 2 * tpf;
 185         angle1 += 4 * tpf;
 186
 187         ((PointLight)lightState.get(0)).setLocation(new Vector3f(2.0f * FastMath.cos(angle0), 2.0f * FastMath.sin(angle0), 1.5f));
 188         ((PointLight)lightState.get(1)).setLocation(new Vector3f(2.0f * FastMath.cos(angle1), 2.0f * FastMath.sin(angle1), 1.5f));
 189     }
 190 }