Cleanup GLGraphicsConfiguration[Factory] implementations (X11/WGL)

- AWT/WGL:
    - Using sun.awt.Win32GraphicsConfig via reflection, if supported, else we may fail.
    - Preselection of PFD as follows:
      - 1st choice is to create our own AWT GraphicsConfig (GC) based on PFD/GLCaps,
        ignoring WGL_SUPPORT_GDI_ARB, PFD_SUPPORT_GDI
      - 2nd choice is to use AWT PFD pool of GC's
      - else we fail -> use NewtCanvasAWT instead (TODO: Other JDK/AWT implementations ?)
    - Set PFD will be performed at setRealized(..)

- SharedContext (X11/WGL) is synchronized to allow multithreaded access, if required

- Simplified and unified (X11/WGL) GraphicsConfigurationFactory

- WGL 'external' drawables will be determined with given arguments right away

1 files changed, 86 insertions, 0 deletions

diff --git a/src/jogl/classes/com/jogamp/opengl/impl/GLGraphicsConfigurationFactoryImpl.java b/src/jogl/classes/com/jogamp/opengl/impl/GLGraphicsConfigurationFactoryImpl.java
new file mode 100644
index 000000000..4dae603c7
--- /dev/null
+++ b/src/jogl/classes/com/jogamp/opengl/impl/GLGraphicsConfigurationFactoryImpl.java
@@ -0,0 +1,86 @@
+/**
+ * Copyright 2010 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+
+package com.jogamp.opengl.impl;
+
+import javax.media.nativewindow.CapabilitiesChooser;
+import javax.media.nativewindow.CapabilitiesImmutable;
+import javax.media.nativewindow.GraphicsConfigurationFactory;
+import javax.media.nativewindow.NativeWindowException;
+import javax.media.opengl.DefaultGLCapabilitiesChooser;
+
+public abstract class GLGraphicsConfigurationFactoryImpl extends GraphicsConfigurationFactory {
+
+    protected static int chooseCapabilities(CapabilitiesChooser chooser,
+                                            CapabilitiesImmutable capsRequested, CapabilitiesImmutable[] availableCaps, int recommendedIndex) {
+        if(null == chooser && 0 <= recommendedIndex) {
+            if (DEBUG) {
+                System.err.println("chooseCapabilities: Using recommendedIndex: idx " + recommendedIndex);
+            }
+            return recommendedIndex;
+        }
+        int chosenIndex = recommendedIndex;
+
+        if (null == chooser) {
+            chooser = new DefaultGLCapabilitiesChooser();
+        }
+
+        try {
+            chosenIndex = chooser.chooseCapabilities(capsRequested, availableCaps, recommendedIndex);
+            if(0 <= chosenIndex) {
+                if (DEBUG) {
+                    System.err.println("chooseCapabilities: Chosen idx " + chosenIndex);
+                }
+                return chosenIndex;
+            }
+        } catch (NativeWindowException e) {
+            if (DEBUG) {
+                e.printStackTrace();
+            }
+        }
+
+        // keep on going ..
+        // seek first available one ..
+        for (chosenIndex = 0; chosenIndex < availableCaps.length && availableCaps[chosenIndex] == null; chosenIndex++) {
+            // nop
+        }
+        if (chosenIndex == availableCaps.length) {
+            // give up ..
+            if (DEBUG) {
+                System.err.println("chooseCapabilities: Failed .. nothing available, bail out");
+            }
+            return -1;
+        }
+        if (DEBUG) {
+            System.err.println("chooseCapabilities: Fall back to 1st available idx " + chosenIndex);
+        }
+
+        return chosenIndex;
+    }
+
+}