1 files changed, 203 insertions, 0 deletions
diff --git a/src/net/java/games/jogl/impl/windows/WindowsOnscreenGLContext.java b/src/net/java/games/jogl/impl/windows/WindowsOnscreenGLContext.java
new file mode 100644
index 000000000..a5b7519cf
--- /dev/null
+++ b/src/net/java/games/jogl/impl/windows/WindowsOnscreenGLContext.java
@@ -0,0 +1,203 @@
+/*
+ * 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.
+ */
+
+package net.java.games.jogl.impl.windows;
+
+import java.awt.Component;
+import java.util.*;
+
+import net.java.games.jogl.*;
+import net.java.games.jogl.impl.*;
+
+public class WindowsOnscreenGLContext extends WindowsGLContext {
+  // Variables for lockSurface/unlockSurface
+  JAWT_DrawingSurface ds;
+  JAWT_DrawingSurfaceInfo dsi;
+  JAWT_Win32DrawingSurfaceInfo win32dsi;
+
+  // Variables for pbuffer support
+  List pbuffersToInstantiate = new ArrayList();
+
+  public WindowsOnscreenGLContext(Component component, GLCapabilities capabilities, GLCapabilitiesChooser chooser) {
+    super(component, capabilities, chooser);
+  }
+  
+  protected GL createGL()
+  {
+    return new WindowsGLImpl(this);
+  }
+  
+  protected boolean isOffscreen() {
+    return false;
+  }
+  
+  public int getOffscreenContextBufferedImageType() {
+    throw new GLException("Should not call this");
+  }
+
+  public int getOffscreenContextReadBuffer() {
+    throw new GLException("Should not call this");
+  }
+
+  public boolean offscreenImageNeedsVerticalFlip() {
+    throw new GLException("Should not call this");
+  }
+
+  public boolean canCreatePbufferContext() {
+    return true;
+  }
+
+  public synchronized GLContext createPbufferContext(GLCapabilities capabilities,
+                                                     int initialWidth,
+                                                     int initialHeight) {
+    WindowsPbufferGLContext ctx = new WindowsPbufferGLContext(capabilities, initialWidth, initialHeight);
+    pbuffersToInstantiate.add(ctx);
+    return ctx;
+  }
+
+  public void bindPbufferToTexture() {
+    throw new GLException("Should not call this");
+  }
+
+  public void releasePbufferFromTexture() {
+    throw new GLException("Should not call this");
+  }
+
+  protected synchronized boolean makeCurrent(Runnable initAction) throws GLException {
+    try {
+      if (!lockSurface()) {
+        return false;
+      }
+      boolean ret = super.makeCurrent(initAction);
+      if (ret) {
+        // Instantiate any pending pbuffers
+        while (!pbuffersToInstantiate.isEmpty()) {
+          WindowsPbufferGLContext ctx =
+            (WindowsPbufferGLContext) pbuffersToInstantiate.remove(pbuffersToInstantiate.size() - 1);
+          ctx.createPbuffer(hdc, hglrc);
+        }
+      }
+      return ret;
+    } catch (RuntimeException e) {
+      try {
+        unlockSurface();
+      } catch (Exception e2) {
+        // do nothing if unlockSurface throws
+      }
+      throw(e); 
+    }
+  }
+
+  protected synchronized void free() throws GLException {
+    try {
+      super.free();
+    } finally {
+      unlockSurface();
+    }
+  }
+
+  protected synchronized void swapBuffers() throws GLException {
+    if (!WGL.SwapBuffers(hdc)) {
+      throw new GLException("Error swapping buffers");
+    }
+  }
+
+  private boolean lockSurface() throws GLException {
+    if (hdc != 0) {
+      throw new GLException("Surface already locked");
+    }
+    ds = getJAWT().GetDrawingSurface(component);
+    if (ds == null) {
+      // Widget not yet realized
+      return false;
+    }
+    int res = ds.Lock();
+    if ((res & JAWTFactory.JAWT_LOCK_ERROR) != 0) {
+      throw new GLException("Unable to lock surface");
+    }
+    // See whether the surface changed and if so destroy the old
+    // OpenGL context so it will be recreated
+    if ((res & JAWTFactory.JAWT_LOCK_SURFACE_CHANGED) != 0) {
+      if (hglrc != 0) {
+        if (!WGL.wglDeleteContext(hglrc)) {
+          throw new GLException("Unable to delete old GL context after surface changed");
+        }
+        hglrc = 0;
+      }
+    }
+    dsi = ds.GetDrawingSurfaceInfo();
+    if (dsi == null) {
+      // Widget not yet realized
+      ds.Unlock();
+      getJAWT().FreeDrawingSurface(ds);
+      ds = null;
+      return false;
+    }
+    win32dsi = (JAWT_Win32DrawingSurfaceInfo) dsi.platformInfo();
+    hdc = win32dsi.hdc();
+    if (hdc == 0) {
+      // Widget not yet realized
+      ds.FreeDrawingSurfaceInfo(dsi);
+      ds.Unlock();
+      getJAWT().FreeDrawingSurface(ds);
+      ds = null;
+      dsi = null;
+      win32dsi = null;
+      return false;
+    }
+    return true;
+  }
+
+  private void unlockSurface() {
+    if (hdc == 0) {
+      throw new GLException("Surface already unlocked");
+    }
+    ds.FreeDrawingSurfaceInfo(dsi);
+    ds.Unlock();
+    getJAWT().FreeDrawingSurface(ds);
+    ds = null;
+    dsi = null;
+    win32dsi = null;
+    hdc = 0;
+  }
+
+  protected void create() {
+    choosePixelFormatAndCreateContext(true);
+  }    
+}