1 files changed, 143 insertions, 0 deletions
diff --git a/src/net/java/games/jogl/impl/x11/X11OffscreenGLDrawable.java b/src/net/java/games/jogl/impl/x11/X11OffscreenGLDrawable.java
new file mode 100644
index 000000000..7b60612df
--- /dev/null
+++ b/src/net/java/games/jogl/impl/x11/X11OffscreenGLDrawable.java
@@ -0,0 +1,143 @@
+/*
+ * 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
+ * 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
+ * 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.
+ */
+
+package net.java.games.jogl.impl.x11;
+
+import net.java.games.jogl.*;
+import net.java.games.jogl.impl.*;
+
+public class X11OffscreenGLDrawable extends X11GLDrawable {
+  private long pixmap;
+  private boolean isDoubleBuffered;
+  // Width and height of the underlying bitmap
+  private int width;
+  private int height;
+
+  public X11OffscreenGLDrawable(GLCapabilities capabilities,
+                                GLCapabilitiesChooser chooser) {
+    super(null, capabilities, chooser);
+  }
+
+  public GLContext createContext(GLContext shareWith) {
+    return new X11OffscreenGLContext(this, shareWith);
+  }
+  
+  public void setSize(int newWidth, int newHeight) {
+    width = newWidth;
+    height = newHeight;
+    if (pixmap != 0) {
+      destroy();
+    }
+    create();
+  }
+
+  public int getWidth() {
+    return width;
+  }
+
+  public int getHeight() {
+    return height;
+  }
+  
+  private void create() {
+    display = X11GLContextFactory.getDisplayConnection();
+    XVisualInfo vis = chooseVisual(false);
+    int bitsPerPixel = vis.depth();
+
+    lockAWT();
+    try {
+      int screen = GLX.DefaultScreen(display);
+      pixmap = GLX.XCreatePixmap(display, (int) GLX.RootWindow(display, screen), width, height, bitsPerPixel);
+      if (pixmap == 0) {
+        throw new GLException("XCreatePixmap failed");
+      }
+      drawable = GLX.glXCreateGLXPixmap(display, vis, pixmap);
+      if (drawable == 0) {
+        GLX.XFreePixmap(display, pixmap);
+        pixmap = 0;
+        throw new GLException("glXCreateGLXPixmap failed");
+      }
+      isDoubleBuffered = (X11GLContextFactory.glXGetConfig(display, vis, GLX.GLX_DOUBLEBUFFER, new int[1], 0) != 0);
+      if (DEBUG) {
+        System.err.println("Created pixmap " + toHexString(pixmap) +
+                           ", GLXPixmap " + toHexString(drawable) +
+                           ", display " + toHexString(display));
+      }
+    } finally {
+      unlockAWT();
+    }
+  }
+
+  public void destroy() {
+    if (pixmap != 0) {
+      if (DEBUG) {
+        System.err.println("Destroying pixmap " + toHexString(pixmap) +
+                           ", GLXPixmap " + toHexString(drawable) +
+                           ", display " + toHexString(display));
+      }
+
+      // Must destroy pixmap and GLXPixmap
+      lockAWT();
+
+      if (DEBUG) {
+        long cur = GLX.glXGetCurrentContext();
+        if (cur != 0) {
+          System.err.println("WARNING: found context " + toHexString(cur) + " current during pixmap destruction");
+        }
+      }
+
+      // FIXME: workaround for crashes on NVidia hardware when
+      // destroying pixmap (no context is current at the point of the
+      // crash, at least from the point of view of
+      // glXGetCurrentContext)
+      GLX.glXMakeCurrent(display, 0, 0);
+
+      GLX.glXDestroyGLXPixmap(display, drawable);
+      GLX.XFreePixmap(display, pixmap);
+      unlockAWT();
+      drawable = 0;
+      pixmap = 0;
+      display = 0;
+    }
+  }
+
+  public boolean isDoubleBuffered() {
+    return isDoubleBuffered;
+  }
+}