Home | History | Annotate | Download | only in lwjgl 
      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.system.lwjgl;
     34 
     35 import com.jme3.system.AppSettings;
     36 import com.jme3.system.JmeContext.Type;
     37 import java.awt.Graphics2D;
     38 import java.awt.image.BufferedImage;
     39 import java.nio.ByteBuffer;
     40 import java.util.concurrent.atomic.AtomicBoolean;
     41 import java.util.logging.Level;
     42 import java.util.logging.Logger;
     43 import org.lwjgl.LWJGLException;
     44 import org.lwjgl.opengl.*;
     45 
     46 public class LwjglDisplay extends LwjglAbstractDisplay {
     47 
     48     private static final Logger logger = Logger.getLogger(LwjglDisplay.class.getName());
     49 
     50     private final AtomicBoolean needRestart = new AtomicBoolean(false);
     51     private PixelFormat pixelFormat;
     52 
     53     protected DisplayMode getFullscreenDisplayMode(int width, int height, int bpp, int freq){
     54         try {
     55             DisplayMode[] modes = Display.getAvailableDisplayModes();
     56             for (DisplayMode mode : modes){
     57                 if (mode.getWidth() == width
     58                  && mode.getHeight() == height
     59                  && (mode.getBitsPerPixel() == bpp || (bpp==24&&mode.getBitsPerPixel()==32))
     60                  && mode.getFrequency() == freq){
     61                     return mode;
     62                 }
     63             }
     64         } catch (LWJGLException ex) {
     65             listener.handleError("Failed to acquire fullscreen display mode!", ex);
     66         }
     67         return null;
     68     }
     69 
     70     protected void createContext(AppSettings settings) throws LWJGLException{
     71         DisplayMode displayMode = null;
     72         if (settings.getWidth() <= 0 || settings.getHeight() <= 0){
     73             displayMode = Display.getDesktopDisplayMode();
     74             settings.setResolution(displayMode.getWidth(), displayMode.getHeight());
     75         }else if (settings.isFullscreen()){
     76             displayMode = getFullscreenDisplayMode(settings.getWidth(), settings.getHeight(),
     77                                                    settings.getBitsPerPixel(), settings.getFrequency());
     78             if (displayMode == null)
     79                 throw new RuntimeException("Unable to find fullscreen display mode matching settings");
     80         }else{
     81             displayMode = new DisplayMode(settings.getWidth(), settings.getHeight());
     82         }
     83 
     84 	   int samples = 0;
     85         if (settings.getSamples() > 1){
     86             samples = settings.getSamples();
     87         }
     88         PixelFormat pf = new PixelFormat(settings.getBitsPerPixel(),
     89                                          0,
     90                                          settings.getDepthBits(),
     91                                          settings.getStencilBits(),
     92                                          samples);
     93 
     94         frameRate = settings.getFrameRate();
     95         logger.log(Level.INFO, "Selected display mode: {0}", displayMode);
     96 
     97         boolean pixelFormatChanged = false;
     98         if (created.get() && (pixelFormat.getBitsPerPixel() != pf.getBitsPerPixel()
     99                             ||pixelFormat.getDepthBits() != pf.getDepthBits()
    100                             ||pixelFormat.getStencilBits() != pf.getStencilBits()
    101                             ||pixelFormat.getSamples() != pf.getSamples())){
    102             renderer.resetGLObjects();
    103             Display.destroy();
    104             pixelFormatChanged = true;
    105         }
    106         pixelFormat = pf;
    107 
    108         Display.setTitle(settings.getTitle());
    109         if (displayMode != null){
    110             if (settings.isFullscreen()){
    111                 Display.setDisplayModeAndFullscreen(displayMode);
    112             }else{
    113                 Display.setFullscreen(false);
    114                 Display.setDisplayMode(displayMode);
    115             }
    116         }else{
    117             Display.setFullscreen(settings.isFullscreen());
    118         }
    119 
    120         if (settings.getIcons() != null) {
    121             Display.setIcon(imagesToByteBuffers(settings.getIcons()));
    122         }
    123 
    124         Display.setVSyncEnabled(settings.isVSync());
    125 
    126         if (created.get() && !pixelFormatChanged){
    127             Display.releaseContext();
    128             Display.makeCurrent();
    129             Display.update();
    130         }
    131 
    132         if (!created.get() || pixelFormatChanged){
    133             ContextAttribs attr = createContextAttribs();
    134             if (attr != null){
    135                 Display.create(pixelFormat, attr);
    136             }else{
    137                 Display.create(pixelFormat);
    138             }
    139             renderable.set(true);
    140 
    141             if (pixelFormatChanged && pixelFormat.getSamples() > 1
    142              && GLContext.getCapabilities().GL_ARB_multisample){
    143                 GL11.glEnable(ARBMultisample.GL_MULTISAMPLE_ARB);
    144             }
    145         }
    146     }
    147 
    148     protected void destroyContext(){
    149         try {
    150             renderer.cleanup();
    151             Display.releaseContext();
    152             Display.destroy();
    153         } catch (LWJGLException ex) {
    154             listener.handleError("Failed to destroy context", ex);
    155         }
    156     }
    157 
    158     public void create(boolean waitFor){
    159         if (created.get()){
    160             logger.warning("create() called when display is already created!");
    161             return;
    162         }
    163 
    164         new Thread(this, "LWJGL Renderer Thread").start();
    165         if (waitFor)
    166             waitFor(true);
    167     }
    168 
    169     @Override
    170     public void runLoop(){
    171         // This method is overriden to do restart
    172         if (needRestart.getAndSet(false)){
    173             try{
    174                 createContext(settings);
    175             }catch (LWJGLException ex){
    176                 logger.log(Level.SEVERE, "Failed to set display settings!", ex);
    177             }
    178             listener.reshape(settings.getWidth(), settings.getHeight());
    179             logger.info("Display restarted.");
    180         }
    181 
    182         super.runLoop();
    183     }
    184 
    185     @Override
    186     public void restart() {
    187         if (created.get()){
    188             needRestart.set(true);
    189         }else{
    190             logger.warning("Display is not created, cannot restart window.");
    191         }
    192     }
    193 
    194     public Type getType() {
    195         return Type.Display;
    196     }
    197 
    198     public void setTitle(String title){
    199         if (created.get())
    200             Display.setTitle(title);
    201     }
    202 
    203     private ByteBuffer[] imagesToByteBuffers(Object[] images) {
    204         ByteBuffer[] out = new ByteBuffer[images.length];
    205         for (int i = 0; i < images.length; i++) {
    206             BufferedImage image = (BufferedImage) images[i];
    207             out[i] = imageToByteBuffer(image);
    208         }
    209         return out;
    210     }
    211 
    212     private ByteBuffer imageToByteBuffer(BufferedImage image) {
    213         if (image.getType() != BufferedImage.TYPE_INT_ARGB_PRE) {
    214             BufferedImage convertedImage = new BufferedImage(image.getWidth(), image.getHeight(), BufferedImage.TYPE_INT_ARGB_PRE);
    215             Graphics2D g = convertedImage.createGraphics();
    216             double width = image.getWidth() * (double) 1;
    217             double height = image.getHeight() * (double) 1;
    218             g.drawImage(image, (int) ((convertedImage.getWidth() - width) / 2),
    219                     (int) ((convertedImage.getHeight() - height) / 2),
    220                     (int) (width), (int) (height), null);
    221             g.dispose();
    222             image = convertedImage;
    223         }
    224 
    225         byte[] imageBuffer = new byte[image.getWidth() * image.getHeight() * 4];
    226         int counter = 0;
    227         for (int i = 0; i < image.getHeight(); i++) {
    228             for (int j = 0; j < image.getWidth(); j++) {
    229                 int colorSpace = image.getRGB(j, i);
    230                 imageBuffer[counter + 0] = (byte) ((colorSpace << 8) >> 24);
    231                 imageBuffer[counter + 1] = (byte) ((colorSpace << 16) >> 24);
    232                 imageBuffer[counter + 2] = (byte) ((colorSpace << 24) >> 24);
    233                 imageBuffer[counter + 3] = (byte) (colorSpace >> 24);
    234                 counter += 4;
    235             }
    236         }
    237         return ByteBuffer.wrap(imageBuffer);
    238     }
    239 
    240 }
    241