Merged JSR-231 branch on to the main JOGL trunk. The main trunk now

contains the evolving JSR-231 Reference Implementation and the JSR-231
branch is permanently closed.


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@401 232f8b59-042b-4e1e-8c03-345bb8c30851

1 files changed, 301 insertions, 0 deletions

diff --git a/src/classes/com/sun/opengl/impl/x11/X11GLContext.java b/src/classes/com/sun/opengl/impl/x11/X11GLContext.java
new file mode 100644
index 000000000..ed9736f22
--- /dev/null
+++ b/src/classes/com/sun/opengl/impl/x11/X11GLContext.java
@@ -0,0 +1,301 @@
+/*
+ * 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 com.sun.opengl.impl.x11;
+
+import java.nio.*;
+import java.util.*;
+import javax.media.opengl.*;
+import com.sun.opengl.impl.*;
+
+public abstract class X11GLContext extends GLContextImpl {
+  protected X11GLDrawable drawable;
+  protected long context;
+  private boolean glXQueryExtensionsStringInitialized;
+  private boolean glXQueryExtensionsStringAvailable;
+  private static final Map/*<String, String>*/ functionNameMap;
+  private GLXExt glXExt;
+  // Table that holds the addresses of the native C-language entry points for
+  // GLX extension functions.
+  private GLXExtProcAddressTable glXExtProcAddressTable;
+  // Cache the most recent value of the "display" variable (which we
+  // only guarantee to be valid in between makeCurrent / free pairs)
+  // so that we can implement displayImpl() (which must be done when
+  // the context is not current)
+  protected long mostRecentDisplay;
+
+  static {
+    functionNameMap = new HashMap();
+    functionNameMap.put("glAllocateMemoryNV", "glXAllocateMemoryNV");
+    functionNameMap.put("glFreeMemoryNV", "glXFreeMemoryNV");
+  }
+
+  public X11GLContext(X11GLDrawable drawable,
+                      GLContext shareWith) {
+    super(shareWith);
+    this.drawable = drawable;
+  }
+  
+  public Object getPlatformGLExtensions() {
+    return getGLXExt();
+  }
+
+  public GLXExt getGLXExt() {
+    if (glXExt == null) {
+      glXExt = new GLXExtImpl(this);
+    }
+    return glXExt;
+  }
+
+  public GLDrawable getGLDrawable() {
+    return drawable;
+  }
+
+  protected String mapToRealGLFunctionName(String glFunctionName) {
+    String lookup = (String) functionNameMap.get(glFunctionName);
+    if (lookup != null) {
+      return lookup;
+    }
+    return glFunctionName;
+  }
+
+  protected String mapToRealGLExtensionName(String glExtensionName) {
+    return glExtensionName;
+  }
+
+  /** Helper routine which usually just turns around and calls
+   * createContext (except for pbuffers, which use a different context
+   * creation mechanism). Should only be called by {@link
+   * makeCurrentImpl()}.
+   */
+  protected abstract void create();
+
+  /**
+   * Creates and initializes an appropriate OpenGL context. Should only be
+   * called by {@link create()}.
+   */
+  protected void createContext(boolean onscreen) {
+    XVisualInfo vis = drawable.chooseVisual(onscreen);
+    X11GLContext other = (X11GLContext) GLContextShareSet.getShareContext(this);
+    long share = 0;
+    if (other != null) {
+      share = other.getContext();
+      if (share == 0) {
+        throw new GLException("GLContextShareSet returned an invalid OpenGL context");
+      }
+    }
+    context = GLX.glXCreateContext(drawable.getDisplay(), vis, share, onscreen);
+    if (context == 0) {
+      throw new GLException("Unable to create OpenGL context");
+    }
+    GLContextShareSet.contextCreated(this);
+  }
+
+  protected int makeCurrentImpl() throws GLException {
+    // FIXME: in offscreen (non-pbuffer) case this is run without the
+    // AWT lock held
+    boolean created = false;
+    if (context == 0) {
+      create();
+      if (DEBUG) {
+        System.err.println(getThreadName() + ": !!! Created GL context for " + getClass().getName());
+      }
+      created = true;
+    }
+
+    if (!GLX.glXMakeCurrent(drawable.getDisplay(), drawable.getDrawable(), context)) {
+      throw new GLException("Error making context current");
+    } else {
+      mostRecentDisplay = drawable.getDisplay();
+      if (DEBUG && VERBOSE) {
+        System.err.println(getThreadName() + ": glXMakeCurrent(display " + toHexString(drawable.getDisplay()) +
+                           ", drawable " + toHexString(drawable.getDrawable()) +
+                           ", context " + toHexString(context) + ") succeeded");
+      }
+    }
+
+    if (created) {
+      resetGLFunctionAvailability();
+      return CONTEXT_CURRENT_NEW;
+    }
+    return CONTEXT_CURRENT;
+  }
+
+  protected void releaseImpl() throws GLException {
+    if (!GLX.glXMakeCurrent(drawable.getDisplay(), 0, 0)) {
+      throw new GLException("Error freeing OpenGL context");
+    }
+  }
+
+  protected void destroyImpl() throws GLException {
+    lockAWT();
+    if (context != 0) {
+      GLX.glXDestroyContext(mostRecentDisplay, context);
+      if (DEBUG) {
+        System.err.println("!!! Destroyed OpenGL context " + context);
+      }
+      context = 0;
+      mostRecentDisplay = 0;
+      GLContextShareSet.contextDestroyed(this);
+    }
+    unlockAWT();
+  }
+
+  public boolean isCreated() {
+    return (context != 0);
+  }
+
+  protected void resetGLFunctionAvailability() {
+    super.resetGLFunctionAvailability();
+    if (DEBUG) {
+      System.err.println(getThreadName() + ": !!! Initializing GLX extension address table");
+    }
+    resetProcAddressTable(getGLXExtProcAddressTable());
+  }
+  
+  public GLXExtProcAddressTable getGLXExtProcAddressTable() {
+    if (glXExtProcAddressTable == null) {
+      // FIXME: cache ProcAddressTables by capability bits so we can
+      // share them among contexts with the same capabilities
+      glXExtProcAddressTable = new GLXExtProcAddressTable();
+    }          
+    return glXExtProcAddressTable;
+  }
+
+  public synchronized String getPlatformExtensionsString() {
+    if (drawable.getDisplay() == 0) {
+      throw new GLException("Context not current");
+    }
+    if (!glXQueryExtensionsStringInitialized) {
+      glXQueryExtensionsStringAvailable =
+        (GLDrawableFactoryImpl.getFactoryImpl().dynamicLookupFunction("glXQueryExtensionsString") != 0);
+      glXQueryExtensionsStringInitialized = true;
+    }
+    if (glXQueryExtensionsStringAvailable) {
+      lockAWT();
+      try {
+        String ret = GLX.glXQueryExtensionsString(drawable.getDisplay(), GLX.DefaultScreen(drawable.getDisplay()));
+        if (DEBUG) {
+          System.err.println("!!! GLX extensions: " + ret);
+        }
+        return ret;
+      } finally {
+        unlockAWT();
+      }
+    } else {
+      return "";
+    }
+  }
+
+  protected boolean isFunctionAvailable(String glFunctionName)
+  {
+    boolean available = super.isFunctionAvailable(glFunctionName);
+    
+    // Sanity check for implementations that use proc addresses for run-time
+    // linking: if the function IS available, then make sure there's a proc
+    // address for it if it's an extension or not part of the OpenGL 1.1 core
+    // (post GL 1.1 functions are run-time linked on windows).
+    assert(!available ||
+           (getGLProcAddressTable().getAddressFor(mapToRealGLFunctionName(glFunctionName)) != 0 ||
+            FunctionAvailabilityCache.isPartOfGLCore("1.1", mapToRealGLFunctionName(glFunctionName)))
+           );
+
+    return available;
+  }
+  
+  public boolean isExtensionAvailable(String glExtensionName) {
+    if (glExtensionName.equals("GL_ARB_pbuffer") ||
+        glExtensionName.equals("GL_ARB_pixel_format")) {
+      return GLDrawableFactory.getFactory().canCreateGLPbuffer();
+    }
+    return super.isExtensionAvailable(glExtensionName);
+  }
+
+
+  public void setSwapInterval(int interval) {
+    // FIXME: make the context current first? Currently assumes that
+    // will not be necessary. Make the caller do this?
+    GLXExt glXExt = getGLXExt();
+    if (glXExt.isExtensionAvailable("GLX_SGI_swap_control")) {
+      glXExt.glXSwapIntervalSGI(interval);
+    }
+  }
+
+  public ByteBuffer glAllocateMemoryNV(int arg0, float arg1, float arg2, float arg3) {
+    return getGLXExt().glXAllocateMemoryNV(arg0, arg1, arg2, arg3);
+  }
+
+  public int getOffscreenContextPixelDataType() {
+    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 void bindPbufferToTexture() {
+    throw new GLException("Should not call this");
+  }
+
+  public void releasePbufferFromTexture() {
+    throw new GLException("Should not call this");
+  }
+
+  //----------------------------------------------------------------------
+  // Internals only below this point
+  //
+
+  protected long getContext() {
+    return context;
+  }
+
+  // These synchronization primitives prevent the AWT from making
+  // requests from the X server asynchronously to this code.
+  protected void lockAWT() {
+    X11GLDrawableFactory.lockAWT();
+  }
+
+  protected void unlockAWT() {
+    X11GLDrawableFactory.unlockAWT();
+  }
+}