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Diffstat (limited to 'src/net/java/games/jogl/impl/macosx/MacOSXOnscreenGLDrawable.java')
| -rw-r--r-- | src/net/java/games/jogl/impl/macosx/MacOSXOnscreenGLDrawable.java | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/src/net/java/games/jogl/impl/macosx/MacOSXOnscreenGLDrawable.java b/src/net/java/games/jogl/impl/macosx/MacOSXOnscreenGLDrawable.java new file mode 100644 index 000000000..808a47472 --- /dev/null +++ b/src/net/java/games/jogl/impl/macosx/MacOSXOnscreenGLDrawable.java @@ -0,0 +1,236 @@ +/* + * 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.macosx; + +import java.awt.Component; +import java.lang.ref.WeakReference; +import java.security.*; +import java.util.*; + +import net.java.games.jogl.*; +import net.java.games.jogl.impl.*; + +public class MacOSXOnscreenGLDrawable extends MacOSXGLDrawable { + public static final int LOCK_SURFACE_NOT_READY = 1; + public static final int LOCK_SURFACE_CHANGED = 2; + public static final int LOCK_SUCCESS = 3; + + private static JAWT jawt; + protected Component component; + + private List/*<WeakReference<GLContext>>*/ createdContexts = + new ArrayList(); + + // Variables for lockSurface/unlockSurface + private JAWT_DrawingSurface ds; + private JAWT_DrawingSurfaceInfo dsi; + private JAWT_MacOSXDrawingSurfaceInfo macosxdsi; + + // Indicates whether the component (if an onscreen context) has been + // realized. Plausibly, before the component is realized the JAWT + // should return an error or NULL object from some of its + // operations; this appears to be the case on Win32 but is not true + // at least with Sun's current X11 implementation (1.4.x), which + // crashes with no other error reported if the DrawingSurfaceInfo is + // fetched from a locked DrawingSurface during the validation as a + // result of calling show() on the main thread. To work around this + // we prevent any JAWT or OpenGL operations from being done until + // addNotify() is called on the component. + protected boolean realized; + + // Workaround for instance of 4796548 + private boolean firstLock = true; + + public MacOSXOnscreenGLDrawable(Component component, + GLCapabilities capabilities, + GLCapabilitiesChooser chooser) { + super(capabilities, chooser); + this.component = component; + } + + public GLContext createContext(GLContext shareWith) { + MacOSXOnscreenGLContext context = + new MacOSXOnscreenGLContext(this, shareWith); + // NOTE: we need to keep track of the created contexts in order to + // implement swapBuffers() because of how Mac OS X implements its + // OpenGL window interface + synchronized (this) { + List newContexts = new ArrayList(); + newContexts.addAll(createdContexts); + newContexts.add(new WeakReference(context)); + createdContexts = newContexts; + } + return context; + } + + public void setRealized(boolean realized) { + this.realized = realized; + } + + public void setSize(int width, int height) { + component.setSize(width, height); + } + + public int getWidth() { + return component.getWidth(); + } + + public int getHeight() { + return component.getHeight(); + } + + public void swapBuffers() throws GLException { + for (Iterator iter = createdContexts.iterator(); iter.hasNext(); ) { + WeakReference ref = (WeakReference) iter.next(); + MacOSXOnscreenGLContext ctx = (MacOSXOnscreenGLContext) ref.get(); + // FIXME: clear out unreachable contexts + if (ctx != null) { + ctx.swapBuffers(); + // FIXME: it isn't clear how to produce the same functionality + // as swapping an HDC's or GLXDrawable's buffers using the + // NSOpenGLContext API flushBuffer. Other platforms would + // associate the swapBuffer / flushBuffer API with the NSView + // rather than the NSOpenGLContext. For now, assume that + // calling flushBuffer on one context is the same as calling a + // "swapBuffers" function for the NSView. + return; + } + } + } + + public int lockSurface() throws GLException { + if (!realized) { + return LOCK_SURFACE_NOT_READY; + } + if (nsView != 0) { + throw new GLException("Surface already locked"); + } + ds = getJAWT().GetDrawingSurface(component); + if (ds == null) { + // Widget not yet realized + return LOCK_SURFACE_NOT_READY; + } + 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 (NOTE: removeNotify + // should handle this case, but it may be possible that race + // conditions can cause this code to be triggered -- should test + // more) + int ret = LOCK_SUCCESS; + if ((res & JAWTFactory.JAWT_LOCK_SURFACE_CHANGED) != 0) { + ret = LOCK_SURFACE_CHANGED; + } + if (firstLock) { + AccessController.doPrivileged(new PrivilegedAction() { + public Object run() { + dsi = ds.GetDrawingSurfaceInfo(); + return null; + } + }); + } else { + dsi = ds.GetDrawingSurfaceInfo(); + } + if (dsi == null) { + // Widget not yet realized + ds.Unlock(); + getJAWT().FreeDrawingSurface(ds); + ds = null; + return LOCK_SURFACE_NOT_READY; + } + firstLock = false; + macosxdsi = (JAWT_MacOSXDrawingSurfaceInfo) dsi.platformInfo(); + if (macosxdsi == null) { + // Widget not yet realized + ds.FreeDrawingSurfaceInfo(dsi); + ds.Unlock(); + getJAWT().FreeDrawingSurface(ds); + ds = null; + dsi = null; + return LOCK_SURFACE_NOT_READY; + } + nsView = macosxdsi.cocoaViewRef(); + if (nsView == 0) { + // Widget not yet realized + ds.FreeDrawingSurfaceInfo(dsi); + ds.Unlock(); + getJAWT().FreeDrawingSurface(ds); + ds = null; + dsi = null; + macosxdsi = null; + return LOCK_SURFACE_NOT_READY; + } + return ret; + } + + public void unlockSurface() throws GLException { + if (nsView == 0) { + throw new GLException("Surface already unlocked"); + } + ds.FreeDrawingSurfaceInfo(dsi); + ds.Unlock(); + getJAWT().FreeDrawingSurface(ds); + ds = null; + dsi = null; + macosxdsi = null; + nsView = 0; + } + + //---------------------------------------------------------------------- + // Internals only below this point + // + + private JAWT getJAWT() + { + if (jawt == null) + { + JAWT j = new JAWT(); + j.version(JAWTFactory.JAWT_VERSION_1_4); + if (!JAWTFactory.JAWT_GetAWT(j)) + { + throw new RuntimeException("Unable to initialize JAWT"); + } + jawt = j; + } + return jawt; + } +}
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