/**
* Copyright (c) 2008-2010 Ardor Labs, Inc.
*
* This file is part of Ardor3D.
*
* Ardor3D is free software: you can redistribute it and/or modify it
* under the terms of its license which may be found in the accompanying
* LICENSE file or at <http://www.ardor3d.com/LICENSE>.
*/
package com.ardor3d.example.renderer;
import java.io.IOException;
import java.util.Random;
import java.util.concurrent.Callable;
import com.ardor3d.bounding.BoundingSphere;
import com.ardor3d.example.ExampleBase;
import com.ardor3d.example.Purpose;
import com.ardor3d.framework.Canvas;
import com.ardor3d.input.Key;
import com.ardor3d.input.logical.InputTrigger;
import com.ardor3d.input.logical.KeyPressedCondition;
import com.ardor3d.input.logical.TriggerAction;
import com.ardor3d.input.logical.TwoInputStates;
import com.ardor3d.math.ColorRGBA;
import com.ardor3d.math.Vector3;
import com.ardor3d.renderer.queue.RenderBucketType;
import com.ardor3d.renderer.state.CullState;
import com.ardor3d.renderer.state.GLSLShaderObjectsState;
import com.ardor3d.renderer.state.MaterialState;
import com.ardor3d.renderer.state.MaterialState.ColorMaterial;
import com.ardor3d.scenegraph.Node;
import com.ardor3d.scenegraph.hint.CullHint;
import com.ardor3d.scenegraph.hint.DataMode;
import com.ardor3d.scenegraph.hint.LightCombineMode;
import com.ardor3d.scenegraph.shape.Sphere;
import com.ardor3d.scenegraph.visitor.DeleteVBOsVisitor;
import com.ardor3d.ui.text.BasicText;
import com.ardor3d.util.GameTaskQueueManager;
import com.ardor3d.util.ReadOnlyTimer;
import com.ardor3d.util.resource.ResourceLocatorTool;
/**
* Demonstrates the use of geometry instancing and compares it to VBO.
*/
@Purpose(htmlDescriptionKey = "com.ardor3d.example.renderer.GeometryInstancingExample", //
thumbnailPath = "com/ardor3d/example/media/thumbnails/renderer_GeometryInstancingExample.jpg", //
maxHeapMemory = 64)
public class GeometryInstancingExample extends ExampleBase {
private BasicText frameRateLabel;
private int frames = 0;
private long startTime = System.currentTimeMillis();
private int vboMode = 0;
private boolean instancingEnabled = true;
private GLSLShaderObjectsState _shader;
private Node _base;
public static void main(final String[] args) {
// Turn on support for instanced geometry.
System.setProperty("ardor3d.enableInstancedGeometrySupport", "true");
start(GeometryInstancingExample.class);
}
@Override
protected void updateExample(final ReadOnlyTimer timer) {
final long now = System.currentTimeMillis();
final long dt = now - startTime;
if (dt > 1000) {
final long fps = Math.round(1e3 * frames / dt);
frameRateLabel.setText(fps + " fps");
startTime = now;
frames = 0;
}
final Vector3 trans = new Vector3(Math.sin(timer.getTime() / 1000000000.0) * 70 - 35, 0, -100);
_base.setTranslation(trans);
light.setLocation(trans);
frames++;
}
@Override
protected void initExample() {
_canvas.setTitle("GeometryInstancingExample");
final BasicText t = BasicText.createDefaultTextLabel("Text", "[V] VBO Off");
t.getSceneHints().setRenderBucketType(RenderBucketType.Ortho);
t.getSceneHints().setLightCombineMode(LightCombineMode.Off);
t.setTranslation(new Vector3(0, 20, 0));
_root.attachChild(t);
final BasicText t2 = BasicText.createDefaultTextLabel("Text", "[I] Instancing On");
t2.getSceneHints().setRenderBucketType(RenderBucketType.Ortho);
t2.getSceneHints().setLightCombineMode(LightCombineMode.Off);
t2.setTranslation(new Vector3(0, 50, 0));
_root.attachChild(t2);
final CullState cs = new CullState();
cs.setCullFace(CullState.Face.Back);
cs.setEnabled(true);
_root.setRenderState(cs);
final MaterialState ms = new MaterialState();
ms.setColorMaterial(ColorMaterial.Diffuse);
_root.setRenderState(ms);
_shader = new GLSLShaderObjectsState();
try {
_shader.setVertexShader(ResourceLocatorTool.getClassPathResourceAsStream(GLSLRibbonExample.class,
"com/ardor3d/example/media/shaders/geometryBasic.vert.glsl"));
_shader.setFragmentShader(ResourceLocatorTool.getClassPathResourceAsStream(GLSLRibbonExample.class,
"com/ardor3d/example/media/shaders/geometryBasic.frag.glsl"));
} catch (final IOException ex) {
ex.printStackTrace();
}
_base = new Node("node");
_root.attachChild(_base);
final Node instancedBase = new Node("instancedBase");
instancedBase.setRenderState(_shader);
_base.attachChild(instancedBase);
instancedBase.getSceneHints().setCullHint(CullHint.Dynamic);
final Node unInstancedBase = new Node("unInstancedBase");
unInstancedBase.setRenderState(_shader);
_base.attachChild(unInstancedBase);
unInstancedBase.getSceneHints().setCullHint(CullHint.Always);
final int nrOfObjects = 500;
generateSpheres(instancedBase, true, nrOfObjects);
generateSpheres(unInstancedBase, false, nrOfObjects);
_logicalLayer.registerTrigger(new InputTrigger(new KeyPressedCondition(Key.V), new TriggerAction() {
public void perform(final Canvas source, final TwoInputStates inputStates, final double tpf) {
vboMode = (vboMode + 1) % 3;
if (vboMode == 0) {
t.setText("[V] VBO Off");
_base.getSceneHints().setDataMode(DataMode.Arrays);
// run this in the opengl thread
GameTaskQueueManager.getManager(_canvas.getCanvasRenderer().getRenderContext()).render(
new Callable<Void>() {
public Void call() throws Exception {
final DeleteVBOsVisitor viz = new DeleteVBOsVisitor(_canvas.getCanvasRenderer()
.getRenderer());
_base.acceptVisitor(viz, false);
return null;
}
});
} else if (vboMode == 1) {
t.setText("[V] VBO On");
_base.getSceneHints().setDataMode(DataMode.VBO);
} else if (vboMode == 2) {
t.setText("[V] VBO Interleaved On");
_base.getSceneHints().setDataMode(DataMode.VBOInterleaved);
}
}
}));
_logicalLayer.registerTrigger(new InputTrigger(new KeyPressedCondition(Key.I), new TriggerAction() {
public void perform(final Canvas source, final TwoInputStates inputStates, final double tpf) {
instancingEnabled = !instancingEnabled;
if (instancingEnabled) {
t2.setText("[I] Instancing On");
instancedBase.getSceneHints().setCullHint(CullHint.Dynamic);
unInstancedBase.getSceneHints().setCullHint(CullHint.Always);
} else {
t2.setText("[I] Instancing Off");
instancedBase.getSceneHints().setCullHint(CullHint.Always);
unInstancedBase.getSceneHints().setCullHint(CullHint.Dynamic);
}
}
}));
// Add fps display
frameRateLabel = BasicText.createDefaultTextLabel("fpsLabel", "");
frameRateLabel.setTranslation(5,
_canvas.getCanvasRenderer().getCamera().getHeight() - 5 - frameRateLabel.getHeight(), 0);
frameRateLabel.setTextColor(ColorRGBA.WHITE);
frameRateLabel.getSceneHints().setOrthoOrder(-1);
_root.attachChild(frameRateLabel);
}
protected void generateSpheres(final Node modelBase, final boolean useInstancing, final int nrOfObjects) {
final Random rand = new Random(1337);
final Sphere sphereroot = new Sphere("Sphere", 8, 8, 2);
for (int i = 0; i < nrOfObjects; i++) {
Sphere sphere;
if (useInstancing) {
sphere = (Sphere) sphereroot.makeInstanced();
} else {
sphere = (Sphere) sphereroot.makeCopy(true);
}
sphere.setRandomColors();
sphere.setModelBound(new BoundingSphere());
sphere.setTranslation(new Vector3(rand.nextDouble() * 100.0 - 50.0, rand.nextDouble() * 100.0 - 50.0, rand
.nextDouble() * 100.0 - 250.0));
sphere.getSceneHints().setCullHint(CullHint.Dynamic);
modelBase.attachChild(sphere);
}
}
}