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/**
* Copyright 2012 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package jogamp.opengl.egl;
import java.nio.IntBuffer;
import javax.media.nativewindow.AbstractGraphicsDevice;
import javax.media.nativewindow.NativeSurface;
import javax.media.nativewindow.NativeWindowFactory;
import javax.media.opengl.GLException;
import jogamp.opengl.Debug;
import com.jogamp.common.util.LongIntHashMap;
import com.jogamp.nativewindow.egl.EGLGraphicsDevice;
/**
* This implementation provides recursive calls to
* {@link EGL#eglInitialize(long, IntBuffer, IntBuffer)} and {@link EGL#eglTerminate(long)},
* where <code>eglInitialize(..)</code> is issued only for the 1st call per <code>eglDisplay</code>
* and <code>eglTerminate(..)</code> is issued only for the last call.
* <p>
* This class is required, due to implementation bugs within EGL where {@link EGL#eglTerminate(long)}
* does not mark the resource for deletion when still in use, bug releases them immediatly.
* </p>
*/
public class EGLDisplayUtil {
protected static final boolean DEBUG = Debug.debug("EGL");
static LongIntHashMap eglDisplayCounter;
static {
eglDisplayCounter = new LongIntHashMap();
eglDisplayCounter.setKeyNotFoundValue(0);
}
public static long eglGetDisplay(long nativeDisplay_id) {
final long eglDisplay = EGL.eglGetDisplay(nativeDisplay_id);
if(DEBUG) {
System.err.println("EGLDisplayUtil.eglGetDisplay(): eglDisplay("+EGLContext.toHexString(nativeDisplay_id)+"): "+
EGLContext.toHexString(eglDisplay)+
", "+((EGL.EGL_NO_DISPLAY != eglDisplay)?"OK":"Failed"));
}
return eglDisplay;
}
public static synchronized boolean eglInitialize(long eglDisplay, int[] major, int major_offset, int[] minor, int minor_offset) {
final boolean res;
final int refCnt = eglDisplayCounter.get(eglDisplay) + 1; // 0 + 1 = 1 -> 1st init
if(1==refCnt) {
res = EGL.eglInitialize(eglDisplay, major, major_offset, minor, minor_offset);
} else {
res = true;
}
eglDisplayCounter.put(eglDisplay, refCnt);
if(DEBUG) {
System.err.println("EGL.eglInitialize(0x"+Long.toHexString(eglDisplay)+" ...): #"+refCnt+" = "+res);
}
return res;
}
/**
*
* @param eglDisplay
* @param major
* @param minor
* @return true if the eglDisplay is valid and it's reference counter becomes one and {@link EGL#eglTerminate(long)} was successful, otherwise false
*
* @see EGL#eglInitialize(long, int[], int, int[], int)}
*/
public static synchronized boolean eglInitialize(long eglDisplay, IntBuffer major, IntBuffer minor) {
if( EGL.EGL_NO_DISPLAY == eglDisplay) {
return false;
}
final boolean res;
final int refCnt = eglDisplayCounter.get(eglDisplay) + 1; // 0 + 1 = 1 -> 1st init
if(1==refCnt) { // only initialize once
res = EGL.eglInitialize(eglDisplay, major, minor);
} else {
res = true;
}
eglDisplayCounter.put(eglDisplay, refCnt);
if(DEBUG) {
System.err.println("EGL.eglInitialize(0x"+Long.toHexString(eglDisplay)+" ...): #"+refCnt+" = "+res);
}
return res;
}
/**
* @param eglDisplay the EGL display handle
* @return true if the eglDisplay is valid and it's reference counter becomes zero and {@link EGL#eglTerminate(long)} was successful, otherwise false
*/
public static synchronized boolean eglTerminate(long eglDisplay) {
if( EGL.EGL_NO_DISPLAY == eglDisplay) {
return false;
}
final boolean res;
final int refCnt = eglDisplayCounter.get(eglDisplay) - 1; // 1 - 1 = 0 -> final terminate
if(0==refCnt) { // no terminate if still in use or already terminated
res = EGL.eglTerminate(eglDisplay);
} else {
res = true;
}
if(0<=refCnt) { // no negative refCount
eglDisplayCounter.put(eglDisplay, refCnt);
}
if(DEBUG) {
System.err.println("EGL.eglTerminate(0x"+Long.toHexString(eglDisplay)+" ...): #"+refCnt+" = "+res);
}
return res;
}
public static final EGLGraphicsDevice.EGLDisplayLifecycleCallback eglLifecycleCallback = new EGLGraphicsDevice.EGLDisplayLifecycleCallback() {
public long eglGetAndInitDisplay(long nativeDisplayID) {
long eglDisplay = EGLDisplayUtil.eglGetDisplay(nativeDisplayID);
if (eglDisplay == EGL.EGL_NO_DISPLAY) {
throw new GLException("Failed to created EGL display: 0x"+Long.toHexString(nativeDisplayID)+", error 0x"+Integer.toHexString(EGL.eglGetError()));
}
if (!EGLDisplayUtil.eglInitialize(eglDisplay, null, null)) {
throw new GLException("eglInitialize failed"+", error 0x"+Integer.toHexString(EGL.eglGetError()));
}
return eglDisplay;
}
public void eglTerminate(long eglDisplayHandle) {
EGLDisplayUtil.eglTerminate(eglDisplayHandle);
}
};
/**
* @param nativeDisplayID
* @param connection
* @param unitID
* @return an initialized EGLGraphicsDevice
* @throws GLException if {@link EGL#eglGetDisplay(long)} or {@link EGL#eglInitialize(long, int[], int, int[], int)} fails
* @see EGLGraphicsDevice#EGLGraphicsDevice(long, long, String, int, com.jogamp.nativewindow.egl.EGLGraphicsDevice.EGLDisplayLifecycleCallback)
*/
public static EGLGraphicsDevice eglCreateEGLGraphicsDevice(long nativeDisplayID, String connection, int unitID) {
final EGLGraphicsDevice eglDisplay = new EGLGraphicsDevice(nativeDisplayID, 0, connection, unitID, eglLifecycleCallback);
eglDisplay.open();
return eglDisplay;
}
/**
* @param surface
* @param allowFallBackToDefault
* @return an initialized EGLGraphicsDevice
* @throws GLException if {@link EGL#eglGetDisplay(long)} or {@link EGL#eglInitialize(long, int[], int, int[], int)} fails
*/
public static EGLGraphicsDevice eglCreateEGLGraphicsDevice(NativeSurface surface, boolean allowFallBackToDefault) {
long nativeDisplayID;
if( NativeWindowFactory.TYPE_WINDOWS.equals(NativeWindowFactory.getNativeWindowType(false)) ) {
nativeDisplayID = surface.getSurfaceHandle(); // don't even ask ..
} else {
nativeDisplayID = surface.getDisplayHandle(); // 0 == EGL.EGL_DEFAULT_DISPLAY
}
long eglDisplay = EGLDisplayUtil.eglGetDisplay(nativeDisplayID);
if (eglDisplay == EGL.EGL_NO_DISPLAY && nativeDisplayID != EGL.EGL_DEFAULT_DISPLAY && allowFallBackToDefault) {
if(DEBUG) {
System.err.println("EGLDisplayUtil.eglGetDisplay(): Fall back to EGL_DEFAULT_DISPLAY");
}
nativeDisplayID = EGL.EGL_DEFAULT_DISPLAY;
eglDisplay = EGLDisplayUtil.eglGetDisplay(nativeDisplayID);
}
if (eglDisplay == EGL.EGL_NO_DISPLAY) {
throw new GLException("Failed to created EGL display: "+surface+", error 0x"+Integer.toHexString(EGL.eglGetError()));
}
if (!EGLDisplayUtil.eglInitialize(eglDisplay, null, null)) {
throw new GLException("eglInitialize failed"+", error 0x"+Integer.toHexString(EGL.eglGetError()));
}
final AbstractGraphicsDevice adevice = surface.getGraphicsConfiguration().getScreen().getDevice();
return new EGLGraphicsDevice(nativeDisplayID, eglDisplay, adevice.getConnection(), adevice.getUnitID(), eglLifecycleCallback);
}
}
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