Merge branch 'master' of github.com:sgothel/jogl

3 files changed, 494 insertions, 52 deletions

diff --git a/src/nativewindow/native/JAWT_DrawingSurfaceInfo.c b/src/nativewindow/native/JAWT_DrawingSurfaceInfo.c
index e4afbdb70..a0422fa8e 100644
--- a/src/nativewindow/native/JAWT_DrawingSurfaceInfo.c
+++ b/src/nativewindow/native/JAWT_DrawingSurfaceInfo.c
@@ -50,7 +50,7 @@
 #endif
 
 JNIEXPORT jobject JNICALL
-Java_com_sun_nativewindow_impl_jawt_JAWT_1DrawingSurfaceInfo_platformInfo0(JNIEnv* env, jobject unused, jobject jthis0) {
+Java_com_jogamp_nativewindow_impl_jawt_JAWT_1DrawingSurfaceInfo_platformInfo0(JNIEnv* env, jobject unused, jobject jthis0) {
   JAWT_DrawingSurfaceInfo* dsi;
   dsi = (*env)->GetDirectBufferAddress(env, jthis0);
   if (dsi == NULL) {
diff --git a/src/nativewindow/native/JVM_Tool.c b/src/nativewindow/native/JVM_Tool.c
deleted file mode 100644
index e04032aa2..000000000
--- a/src/nativewindow/native/JVM_Tool.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
- * 
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- * 
- * - Redistribution of source code must retain the above copyright
- *   notice, this list of conditions and the following disclaimer.
- * 
- * - Redistribution 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.
- * 
- * Neither the name of Sun Microsystems, Inc. or the names of
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- * 
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
- * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
- * MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
- * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
- * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
- * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
- * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
- * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
- * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
- * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- * 
- * You acknowledge that this software is not designed or intended for use
- * in the design, construction, operation or maintenance of any nuclear
- * facility.
- * 
- * Sun gratefully acknowledges that this software was originally authored
- * and developed by Kenneth Bradley Russell and Christopher John Kline.
- */
-
-#include <jni.h>
-
-JNIEXPORT jboolean JNICALL
-Java_com_sun_nativewindow_impl_jvm_JVMUtil_initialize(JNIEnv *env, jclass _unused, jobject nioBuffer) {
-  int res;
-  void * ptr = NULL;
-  if (nioBuffer != NULL) {
-        ptr = (void *) (*env)->GetDirectBufferAddress(env, nioBuffer);
-  }
-  return ( NULL==ptr ) ? JNI_FALSE : JNI_TRUE ;
-}
-
diff --git a/src/nativewindow/native/x11/Xmisc.c b/src/nativewindow/native/x11/Xmisc.c
new file mode 100644
index 000000000..52449ae84
--- /dev/null
+++ b/src/nativewindow/native/x11/Xmisc.c
@@ -0,0 +1,493 @@
+/*
+ * Copyright (c) 2010 Sven Gothel. All Rights Reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * 
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ * - Redistribution 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.
+ * 
+ * Neither the name Sven Gothel or the names of
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * 
+ * This software is provided "AS IS," without a warranty of any kind. ALL
+ * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
+ * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
+ * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
+ * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
+ * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
+ * SVEN GOTHEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+/* Linux headers don't work properly */
+#define __USE_GNU
+#include <dlfcn.h>
+#undef __USE_GNU
+
+/* Current versions of Solaris don't expose the XF86 extensions,
+   although with the recent transition to Xorg this will probably
+   happen in an upcoming release */
+#if !defined(__sun) && !defined(_HPUX)
+#include <X11/extensions/xf86vmode.h>
+#else
+/* Need to provide stubs for these */
+Bool XF86VidModeGetGammaRampSize(
+    Display *display,
+    int screen,
+    int* size)
+{
+  return False;
+}
+
+Bool XF86VidModeGetGammaRamp(
+    Display *display,
+    int screen,
+    int size,
+    unsigned short *red_array,
+    unsigned short *green_array,
+    unsigned short *blue_array) {
+  return False;
+}
+Bool XF86VidModeSetGammaRamp(
+    Display *display,
+    int screen,
+    int size,
+    unsigned short *red_array,
+    unsigned short *green_array,
+    unsigned short *blue_array) {
+  return False;
+}
+#endif /* defined(__sun) || defined(_HPUX) */
+
+/* HP-UX doesn't define RTLD_DEFAULT. */
+#if defined(_HPUX) && !defined(RTLD_DEFAULT)
+#define RTLD_DEFAULT NULL
+#endif
+
+#include "com_jogamp_nativewindow_impl_x11_X11Lib.h"
+
+// #define VERBOSE_ON 1
+
+#ifdef VERBOSE_ON
+    // Workaround for ancient compiler on Solaris/SPARC
+    // #define DBG_PRINT(args...) fprintf(stderr, args);
+    #define DBG_PRINT0(str) fprintf(stderr, str);
+    #define DBG_PRINT1(str, arg1) fprintf(stderr, str, arg1);
+    #define DBG_PRINT2(str, arg1, arg2) fprintf(stderr, str, arg1, arg2);
+    #define DBG_PRINT3(str, arg1, arg2, arg3) fprintf(stderr, str, arg1, arg2, arg3);
+    #define DBG_PRINT4(str, arg1, arg2, arg3, arg4) fprintf(stderr, str, arg1, arg2, arg3, arg4);
+    #define DBG_PRINT5(str, arg1, arg2, arg3, arg4, arg5) fprintf(stderr, str, arg1, arg2, arg3, arg4, arg5);
+    #define DBG_PRINT6(str, arg1, arg2, arg3, arg4, arg5, arg6) fprintf(stderr, str, arg1, arg2, arg3, arg4, arg5, arg6);
+    #define DBG_PRINT7(str, arg1, arg2, arg3, arg4, arg5, arg6, arg7) fprintf(stderr, str, arg1, arg2, arg3, arg4, arg5, arg6, arg7);
+    #define DBG_PRINT8(str, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8) fprintf(stderr, str, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8);
+
+#else
+
+    // Workaround for ancient compiler on Solaris/SPARC
+    // #define DBG_PRINT(args...)
+    #define DBG_PRINT0(str)
+    #define DBG_PRINT1(str, arg1)
+    #define DBG_PRINT2(str, arg1, arg2)
+    #define DBG_PRINT3(str, arg1, arg2, arg3)
+    #define DBG_PRINT4(str, arg1, arg2, arg3, arg4)
+    #define DBG_PRINT5(str, arg1, arg2, arg3, arg4, arg5)
+    #define DBG_PRINT6(str, arg1, arg2, arg3, arg4, arg5, arg6)
+    #define DBG_PRINT7(str, arg1, arg2, arg3, arg4, arg5, arg6, arg7)
+    #define DBG_PRINT8(str, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8)
+
+#endif
+
+/* Need to pull this in as we don't have a stub header for it */
+extern Bool XineramaEnabled(Display* display);
+
+static void _FatalError(JNIEnv *env, const char* msg, ...)
+{
+    char buffer[512];
+    va_list ap;
+
+    va_start(ap, msg);
+    vsnprintf(buffer, sizeof(buffer), msg, ap);
+    va_end(ap);
+
+    fprintf(stderr, buffer);
+    fprintf(stderr, "\n");
+    (*env)->FatalError(env, buffer);
+}
+
+static const char * const ClazzNameInternalBufferUtil = "com/jogamp/nativewindow/impl/InternalBufferUtil";
+static const char * const ClazzNameInternalBufferUtilStaticCstrName = "copyByteBuffer";
+static const char * const ClazzNameInternalBufferUtilStaticCstrSignature = "(Ljava/nio/ByteBuffer;)Ljava/nio/ByteBuffer;";
+static const char * const ClazzNameByteBuffer = "java/nio/ByteBuffer";
+static const char * const ClazzNameRuntimeException = "java/lang/RuntimeException";
+static jclass clazzInternalBufferUtil = NULL;
+static jmethodID cstrInternalBufferUtil = NULL;
+static jclass clazzByteBuffer = NULL;
+static jclass clazzRuntimeException=NULL;
+
+static void _initClazzAccess(JNIEnv *env) {
+    jclass c;
+
+    if(NULL!=clazzRuntimeException) return ;
+
+    c = (*env)->FindClass(env, ClazzNameRuntimeException);
+    if(NULL==c) {
+        _FatalError(env, "Nativewindow X11Lib: can't find %s", ClazzNameRuntimeException);
+    }
+    clazzRuntimeException = (jclass)(*env)->NewGlobalRef(env, c);
+    (*env)->DeleteLocalRef(env, c);
+    if(NULL==clazzRuntimeException) {
+        _FatalError(env, "FatalError: NEWT X11Window: can't use %s", ClazzNameRuntimeException);
+    }
+
+    c = (*env)->FindClass(env, ClazzNameInternalBufferUtil);
+    if(NULL==c) {
+        _FatalError(env, "FatalError: Java_com_jogamp_nativewindow_impl_x11_X11Lib: can't find %s", ClazzNameInternalBufferUtil);
+    }
+    clazzInternalBufferUtil = (jclass)(*env)->NewGlobalRef(env, c);
+    (*env)->DeleteLocalRef(env, c);
+    if(NULL==clazzInternalBufferUtil) {
+        _FatalError(env, "FatalError: Java_com_jogamp_nativewindow_impl_x11_X11Lib: can't use %s", ClazzNameInternalBufferUtil);
+    }
+    c = (*env)->FindClass(env, ClazzNameByteBuffer);
+    if(NULL==c) {
+        _FatalError(env, "FatalError: Java_com_jogamp_nativewindow_impl_x11_X11Lib: can't find %s", ClazzNameByteBuffer);
+    }
+    clazzByteBuffer = (jclass)(*env)->NewGlobalRef(env, c);
+    (*env)->DeleteLocalRef(env, c);
+    if(NULL==c) {
+        _FatalError(env, "FatalError: Java_com_jogamp_nativewindow_impl_x11_X11Lib: can't use %s", ClazzNameByteBuffer);
+    }
+
+    cstrInternalBufferUtil = (*env)->GetStaticMethodID(env, clazzInternalBufferUtil, 
+                            ClazzNameInternalBufferUtilStaticCstrName, ClazzNameInternalBufferUtilStaticCstrSignature);
+    if(NULL==cstrInternalBufferUtil) {
+        _FatalError(env, "FatalError: Java_com_jogamp_nativewindow_impl_x11_X11Lib:: can't create %s.%s %s",
+            ClazzNameInternalBufferUtil, ClazzNameInternalBufferUtilStaticCstrName, ClazzNameInternalBufferUtilStaticCstrSignature);
+    }
+}
+
+static void _throwNewRuntimeException(Display * unlockDisplay, JNIEnv *env, const char* msg, ...)
+{
+    char buffer[512];
+    va_list ap;
+
+    if(NULL!=unlockDisplay) {
+        XUnlockDisplay(unlockDisplay);
+    }
+
+    _initClazzAccess(env);
+
+    va_start(ap, msg);
+    vsnprintf(buffer, sizeof(buffer), msg, ap);
+    va_end(ap);
+
+    (*env)->ThrowNew(env, clazzRuntimeException, buffer);
+}
+
+static JNIEnv * x11ErrorHandlerJNIEnv = NULL;
+static XErrorHandler origErrorHandler = NULL ;
+
+static int x11ErrorHandler(Display *dpy, XErrorEvent *e)
+{
+    _throwNewRuntimeException(NULL, x11ErrorHandlerJNIEnv, "Nativewindow X11 Error: Display %p, Code 0x%X", dpy, e->error_code);
+
+    return 0;
+}
+
+static void x11ErrorHandlerEnable(int onoff, JNIEnv * env) {
+    if(onoff) {
+        if(NULL==origErrorHandler) {
+            x11ErrorHandlerJNIEnv = env;
+            origErrorHandler = XSetErrorHandler(x11ErrorHandler);
+        }
+    } else {
+        XSetErrorHandler(origErrorHandler);
+        origErrorHandler = NULL;
+    }
+}
+
+
+static XIOErrorHandler origIOErrorHandler = NULL;
+
+static int x11IOErrorHandler(Display *dpy)
+{
+    _FatalError(x11ErrorHandlerJNIEnv, "Nativewindow X11 IOError: Display %p not available", dpy);
+    origIOErrorHandler(dpy);
+    return 0;
+}
+
+static void x11IOErrorHandlerEnable(int onoff, JNIEnv * env) {
+    if(onoff) {
+        if(NULL==origIOErrorHandler) {
+            x11ErrorHandlerJNIEnv = env;
+            origIOErrorHandler = XSetIOErrorHandler(x11IOErrorHandler);
+        }
+    } else {
+        XSetIOErrorHandler(origIOErrorHandler);
+        origIOErrorHandler = NULL;
+    }
+}
+
+JNIEXPORT void JNICALL 
+Java_com_jogamp_nativewindow_impl_x11_X11Util_installIOErrorHandler(JNIEnv *env, jclass _unused) {
+    x11ErrorHandlerEnable(1, env);
+    x11IOErrorHandlerEnable(1, env);
+}
+
+JNIEXPORT jlong JNICALL 
+Java_com_jogamp_nativewindow_impl_x11_X11Lib_dlopen(JNIEnv *env, jclass _unused, jstring name) {
+  const jbyte* chars;
+  void* res;
+  chars = (*env)->GetStringUTFChars(env, name, NULL);
+  res = dlopen(chars, RTLD_LAZY | RTLD_GLOBAL);
+  (*env)->ReleaseStringUTFChars(env, name, chars);
+  return (jlong) ((intptr_t) res);
+}
+
+JNIEXPORT jlong JNICALL 
+Java_com_jogamp_nativewindow_impl_x11_X11Lib_dlsym(JNIEnv *env, jclass _unused, jstring name) {
+  const jbyte* chars;
+  void* res;
+  chars = (*env)->GetStringUTFChars(env, name, NULL);
+  res = dlsym(RTLD_DEFAULT, chars);
+  (*env)->ReleaseStringUTFChars(env, name, chars);
+  return (jlong) ((intptr_t) res);
+}
+
+/*   Java->C glue code:
+ *   Java package: com.jogamp.nativewindow.impl.x11.X11Lib
+ *    Java method: XVisualInfo XGetVisualInfo(long arg0, long arg1, XVisualInfo arg2, java.nio.IntBuffer arg3)
+ *     C function: XVisualInfo *  XGetVisualInfo(Display * , long, XVisualInfo * , int * );
+ */
+JNIEXPORT jobject JNICALL
+Java_com_jogamp_nativewindow_impl_x11_X11Lib_XGetVisualInfoCopied1__JJLjava_nio_ByteBuffer_2Ljava_lang_Object_2I(JNIEnv *env, jclass _unused, jlong arg0, jlong arg1, jobject arg2, jobject arg3, jint arg3_byte_offset) {
+  XVisualInfo * _ptr2 = NULL;
+  int * _ptr3 = NULL;
+  XVisualInfo *  _res;
+  int count;
+  jobject jbyteSource;
+  jobject jbyteCopy;
+    if(0==arg0) {
+        _FatalError(env, "invalid display connection..");
+    }
+    if (arg2 != NULL) {
+        _ptr2 = (XVisualInfo *) (((char*) (*env)->GetDirectBufferAddress(env, arg2)) + 0);
+    }
+  if (arg3 != NULL) {
+    _ptr3 = (int *) (((char*) (*env)->GetPrimitiveArrayCritical(env, arg3, NULL)) + arg3_byte_offset);
+  }
+  _res = XGetVisualInfo((Display *) (intptr_t) arg0, (long) arg1, (XVisualInfo *) _ptr2, (int *) _ptr3);
+  count = _ptr3[0];
+  if (arg3 != NULL) {
+    (*env)->ReleasePrimitiveArrayCritical(env, arg3, _ptr3, 0);
+  }
+  if (_res == NULL) return NULL;
+
+  _initClazzAccess(env);
+
+  jbyteSource = (*env)->NewDirectByteBuffer(env, _res, count * sizeof(XVisualInfo));
+  jbyteCopy   = (*env)->CallStaticObjectMethod(env,
+                                               clazzInternalBufferUtil, cstrInternalBufferUtil, jbyteSource);
+
+  XFree(_res);
+
+  return jbyteCopy;
+}
+
+JNIEXPORT jlong JNICALL 
+Java_com_jogamp_nativewindow_impl_x11_X11Lib_DefaultVisualID(JNIEnv *env, jclass _unused, jlong display, jint screen) {
+  jlong r;
+    if(0==display) {
+        _FatalError(env, "invalid display connection..");
+    }
+  r = (jlong) XVisualIDFromVisual( DefaultVisual( (Display*) (intptr_t) display, screen ) );
+  return r;
+}
+
+/*   Java->C glue code:
+ *   Java package: com.jogamp.nativewindow.impl.x11.X11Lib
+ *    Java method: void XLockDisplay(long display)
+ *     C function: void XLockDisplay(Display *  display);
+ */
+JNIEXPORT void JNICALL 
+Java_com_jogamp_nativewindow_impl_x11_X11Lib_XLockDisplay__J(JNIEnv *env, jclass _unused, jlong display) {
+  if(0==display) {
+      _FatalError(env, "invalid display connection..");
+  }
+  XLockDisplay((Display *) (intptr_t) display);
+}
+
+/*   Java->C glue code:
+ *   Java package: com.jogamp.nativewindow.impl.x11.X11Lib
+ *    Java method: void XUnlockDisplay(long display)
+ *     C function: void XUnlockDisplay(Display *  display);
+ */
+JNIEXPORT void JNICALL 
+Java_com_jogamp_nativewindow_impl_x11_X11Lib_XUnlockDisplay__J(JNIEnv *env, jclass _unused, jlong display) {
+  if(0==display) {
+      _FatalError(env, "invalid display connection..");
+  }
+  XUnlockDisplay((Display *) (intptr_t) display);
+}
+
+
+/*   Java->C glue code:
+ *   Java package: com.jogamp.nativewindow.impl.x11.X11Lib
+ *    Java method: int XCloseDisplay(long display)
+ *     C function: int XCloseDisplay(Display *  display);
+ */
+JNIEXPORT jint JNICALL 
+Java_com_jogamp_nativewindow_impl_x11_X11Lib_XCloseDisplay__J(JNIEnv *env, jclass _unused, jlong display) {
+  int _res;
+  if(0==display) {
+      _FatalError(env, "invalid display connection..");
+  }
+  _res = XCloseDisplay((Display *) (intptr_t) display);
+  return _res;
+}
+
+/*
+ * Class:     com_jogamp_nativewindow_impl_x11_X11Lib
+ * Method:    CreateDummyWindow
+ * Signature: (JIJ)J
+ */
+JNIEXPORT jlong JNICALL Java_com_jogamp_nativewindow_impl_x11_X11Lib_CreateDummyWindow
+  (JNIEnv *env, jobject obj, jlong display, jint screen_index, jlong visualID)
+{
+    Display * dpy  = (Display *)(intptr_t)display;
+    int       scrn_idx = (int)screen_index;
+    Window  windowParent = 0;
+    Window  window = 0;
+
+    XVisualInfo visualTemplate;
+    XVisualInfo *pVisualQuery = NULL;
+    Visual *visual = NULL;
+    int depth;
+
+    XSetWindowAttributes xswa;
+    unsigned long attrMask;
+    int n;
+
+    Screen* scrn;
+
+    if(NULL==dpy) {
+        _FatalError(env, "invalid display connection..");
+        return 0;
+    }
+
+    if(visualID<0) {
+        _throwNewRuntimeException(NULL, env, "invalid VisualID ..");
+        return 0;
+    }
+
+    XLockDisplay(dpy) ;
+
+    XSync(dpy, False);
+
+    scrn = ScreenOfDisplay(dpy, scrn_idx);
+
+    // try given VisualID on screen
+    memset(&visualTemplate, 0, sizeof(XVisualInfo));
+    visualTemplate.screen = scrn_idx;
+    visualTemplate.visualid = (VisualID)visualID;
+    pVisualQuery = XGetVisualInfo(dpy, VisualIDMask|VisualScreenMask, &visualTemplate,&n);
+    if(pVisualQuery!=NULL) {
+        visual   = pVisualQuery->visual;
+        depth    = pVisualQuery->depth;
+        visualID = (jlong)pVisualQuery->visualid;
+        XFree(pVisualQuery);
+        pVisualQuery=NULL;
+    }
+    DBG_PRINT5( "X11: [CreateWindow] trying given (dpy %p, screen %d, visualID: %d, parent %p) found: %p\n", dpy, scrn_idx, (int)visualID, windowParent, visual);
+
+    if (visual==NULL)
+    { 
+        _throwNewRuntimeException(dpy, env, "could not query Visual by given VisualID, bail out!");
+        return 0;
+    } 
+
+    if(pVisualQuery!=NULL) {
+        XFree(pVisualQuery);
+        pVisualQuery=NULL;
+    }
+
+    if(0==windowParent) {
+        windowParent = XRootWindowOfScreen(scrn);
+    }
+
+    attrMask  = (CWBackPixel | CWBorderPixel | CWColormap | CWOverrideRedirect) ;
+
+    memset(&xswa, 0, sizeof(xswa));
+    xswa.override_redirect = True; // not decorated
+    xswa.border_pixel = 0;
+    xswa.background_pixel = 0;
+    xswa.event_mask = 0 ; // no events
+    xswa.colormap = XCreateColormap(dpy,
+                                    XRootWindow(dpy, scrn_idx),
+                                    visual,
+                                    AllocNone);
+
+    window = XCreateWindow(dpy,
+                           windowParent,
+                           0, 0,
+                           64, 64,
+                           0, // border width
+                           depth,
+                           InputOutput,
+                           visual,
+                           attrMask,
+                           &xswa);
+
+    XSync(dpy, False);
+
+    XUnlockDisplay(dpy) ;
+
+    DBG_PRINT2( "X11: [CreateWindow] created window %p on display %p\n", window, dpy);
+
+    return (jlong) window;
+}
+
+
+/*
+ * Class:     com_jogamp_nativewindow_impl_x11_X11Lib
+ * Method:    DestroyDummyWindow
+ * Signature: (JJ)V
+ */
+JNIEXPORT void JNICALL Java_com_jogamp_nativewindow_impl_x11_X11Lib_DestroyDummyWindow
+  (JNIEnv *env, jobject obj, jlong display, jlong window)
+{
+    Display * dpy = (Display *)(intptr_t)display;
+    Window      w = (Window) window;
+
+    if(NULL==dpy) {
+        _throwNewRuntimeException(NULL, env, "invalid display connection..");
+        return;
+    }
+    XLockDisplay(dpy) ;
+
+    XSync(dpy, False);
+    XUnmapWindow(dpy, w);
+    XSync(dpy, False);
+    XDestroyWindow(dpy, w);
+    XSync(dpy, False);
+
+    XUnlockDisplay(dpy) ;
+}