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package jme3test.opencl;
import com.jme3.app.SimpleApplication;
import com.jme3.input.MouseInput;
import com.jme3.input.controls.ActionListener;
import com.jme3.input.controls.AnalogListener;
import com.jme3.input.controls.MouseAxisTrigger;
import com.jme3.input.controls.MouseButtonTrigger;
import com.jme3.math.Vector2f;
import com.jme3.opencl.*;
import com.jme3.system.AppSettings;
import com.jme3.texture.Texture2D;
import com.jme3.ui.Picture;
import java.util.logging.Logger;
/**
* This test class tests the capability to write to a GL texture from OpenCL.
* Move the mouse around while pressing the left mouse key to modify the fractal.
*
* In addition, this test shows how to use {@link ProgramCache}.
*
* @author shaman
*/
public class TestWriteToTexture extends SimpleApplication implements AnalogListener, ActionListener {
private static final Logger LOG = Logger.getLogger(TestWriteToTexture.class.getName());
private static final float MOUSE_SPEED = 0.5f;
private Texture2D tex;
private int initCounter;
private Context clContext;
private CommandQueue clQueue;
private ProgramCache programCache;
private Kernel kernel;
private Vector2f C;
private Image texCL;
private boolean dragging;
public static void main(String[] args){
TestWriteToTexture app = new TestWriteToTexture();
AppSettings settings = new AppSettings(true);
settings.setOpenCLSupport(true);
settings.setVSync(false);
// settings.setRenderer(AppSettings.JOGL_OPENGL_FORWARD_COMPATIBLE);
app.setSettings(settings);
app.start(); // start the game
}
@Override
public void simpleInitApp() {
initOpenCL1();
tex = new Texture2D(settings.getWidth(), settings.getHeight(), 1, com.jme3.texture.Image.Format.RGBA8);
Picture pic = new Picture("julia");
pic.setTexture(assetManager, tex, true);
pic.setPosition(0, 0);
pic.setWidth(settings.getWidth());
pic.setHeight(settings.getHeight());
guiNode.attachChild(pic);
initCounter = 0;
flyCam.setEnabled(false);
inputManager.setCursorVisible(true);
inputManager.addMapping("right", new MouseAxisTrigger(MouseInput.AXIS_X, false));
inputManager.addMapping("left", new MouseAxisTrigger(MouseInput.AXIS_X, true));
inputManager.addMapping("up", new MouseAxisTrigger(MouseInput.AXIS_Y, false));
inputManager.addMapping("down", new MouseAxisTrigger(MouseInput.AXIS_Y, true));
inputManager.addMapping("drag", new MouseButtonTrigger(MouseInput.BUTTON_LEFT));
inputManager.addListener(this, "right", "left", "up", "down", "drag");
dragging = false;
}
@Override
public void simpleUpdate(float tpf) {
super.simpleUpdate(tpf);
if (initCounter < 2) {
initCounter++;
} else if (initCounter == 2) {
//when initCounter reaches 2, the scene was drawn once and the texture was uploaded to the GPU
//then we can bind the texture to OpenCL
initOpenCL2();
updateOpenCL(tpf);
initCounter = 3;
} else {
updateOpenCL(tpf);
}
}
private void initOpenCL1() {
clContext = context.getOpenCLContext();
clQueue = clContext.createQueue().register();
programCache = new ProgramCache(clContext);
//create kernel
String cacheID = getClass().getName()+".Julia";
Program program = programCache.loadFromCache(cacheID);
if (program == null) {
LOG.info("Program not loaded from cache, create from sources instead");
program = clContext.createProgramFromSourceFiles(assetManager, "jme3test/opencl/JuliaSet.cl");
program.build();
programCache.saveToCache(cacheID, program);
}
program.register();
kernel = program.createKernel("JuliaSet").register();
C = new Vector2f(0.12f, -0.2f);
}
private void initOpenCL2() {
//bind image to OpenCL
texCL = clContext.bindImage(tex, MemoryAccess.WRITE_ONLY).register();
}
private void updateOpenCL(float tpf) {
//aquire resource
texCL.acquireImageForSharingNoEvent(clQueue);
//no need to wait for the returned event, since the kernel implicitely waits for it (same command queue)
//execute kernel
Kernel.WorkSize ws = new Kernel.WorkSize(settings.getWidth(), settings.getHeight());
kernel.Run1NoEvent(clQueue, ws, texCL, C, 16);
//release resource
texCL.releaseImageForSharingNoEvent(clQueue);
}
@Override
public void onAnalog(String name, float value, float tpf) {
if (!dragging) {
return;
}
if ("left".equals(name)) {
C.x -= tpf * MOUSE_SPEED;
} else if ("right".equals(name)) {
C.x += tpf * MOUSE_SPEED;
} else if ("up".equals(name)) {
C.y -= tpf * MOUSE_SPEED;
} else if ("down".equals(name)) {
C.y += tpf * MOUSE_SPEED;
}
}
@Override
public void onAction(String name, boolean isPressed, float tpf) {
if ("drag".equals(name)) {
dragging = isPressed;
inputManager.setCursorVisible(!isPressed);
}
}
}