1 files changed, 147 insertions, 0 deletions
diff --git a/src/jogl/classes/jogamp/opengl/GLGraphicsConfigurationUtil.java b/src/jogl/classes/jogamp/opengl/GLGraphicsConfigurationUtil.java
new file mode 100644
index 000000000..529b32f2c
--- /dev/null
+++ b/src/jogl/classes/jogamp/opengl/GLGraphicsConfigurationUtil.java
@@ -0,0 +1,147 @@
+/**
+ * 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 java.util.ArrayList;
+import javax.media.opengl.GLCapabilities;
+import javax.media.opengl.GLCapabilitiesImmutable;
+
+public class GLGraphicsConfigurationUtil {
+    public static final int WINDOW_BIT  = 1 << 0;
+    public static final int BITMAP_BIT  = 1 << 1;
+    public static final int PBUFFER_BIT = 1 << 2;
+    public static final int ALL_BITS    = WINDOW_BIT | BITMAP_BIT | PBUFFER_BIT ;
+
+    public static final StringBuffer winAttributeBits2String(StringBuffer sb, int winattrbits) {
+        if(null==sb) {
+            sb = new StringBuffer();
+        }
+        boolean seperator = false;
+        if( 0 != ( WINDOW_BIT & winattrbits )  )  {
+            sb.append("WINDOW");
+            seperator=true;
+        }
+        if( 0 != ( BITMAP_BIT & winattrbits )  )  {
+            if(seperator) {
+                sb.append(", ");
+            }
+            sb.append("BITMAP");
+            seperator=true;
+        }
+        if( 0 != ( PBUFFER_BIT & winattrbits )  )  {
+            if(seperator) {
+                sb.append(", ");
+            }
+            sb.append("PBUFFER");
+        }
+        return sb;
+    }
+
+    /**
+     * @return bitmask representing the input boolean in exclusive or logic, ie only one bit will be set
+     */
+    public static final int getWinAttributeBits(boolean isOnscreen, boolean isPBuffer) {
+        int winattrbits = 0;
+        if(isOnscreen) {
+            winattrbits |= WINDOW_BIT;
+        } else if (!isPBuffer) {
+            winattrbits |= BITMAP_BIT;
+        } else {
+            winattrbits |= PBUFFER_BIT;
+        }
+        return winattrbits;
+    }
+
+    /**
+     * @see #getWinAttributeBits(boolean, boolean)
+     */
+    public static final int getWinAttributeBits(GLCapabilitiesImmutable caps) {
+        return getWinAttributeBits(caps.isOnscreen(), caps.isPBuffer());
+    }
+
+    public static final boolean addGLCapabilitiesPermutations(ArrayList capsBucket, GLCapabilitiesImmutable temp, int winattrbits) {
+        int preSize = capsBucket.size();
+        if( 0 != ( WINDOW_BIT & winattrbits )  )  {
+            GLCapabilities cpy  = (GLCapabilities) temp.cloneMutable();
+            cpy.setOnscreen(true);
+            capsBucket.add(cpy);
+        }
+        if( 0 != ( PBUFFER_BIT & winattrbits )  )  {
+            GLCapabilities cpy  = (GLCapabilities) temp.cloneMutable();
+            cpy.setPBuffer(true);
+            capsBucket.add(cpy);
+        }
+        if( 0 != ( BITMAP_BIT & winattrbits )  )  {
+            GLCapabilities cpy  = (GLCapabilities) temp.cloneMutable();
+            cpy.setOnscreen(false);
+            cpy.setPBuffer(false);
+            capsBucket.add(cpy);
+        }
+        return capsBucket.size() > preSize;
+    }
+
+    public static GLCapabilitiesImmutable fixGLCapabilities(GLCapabilitiesImmutable capsRequested, boolean pbufferAvailable)
+    {
+        if( !capsRequested.isOnscreen() ) {
+            return fixOffScreenGLCapabilities(capsRequested, pbufferAvailable);
+        }
+        return capsRequested;
+    }
+
+    public static GLCapabilitiesImmutable fixOffScreenGLCapabilities(GLCapabilitiesImmutable capsRequested, boolean pbufferAvailable)
+    {
+        if( capsRequested.getDoubleBuffered() ||
+            capsRequested.isOnscreen() ||
+            ( !pbufferAvailable && capsRequested.isPBuffer() ) )
+        {
+            // fix caps ..
+            GLCapabilities caps2 = (GLCapabilities) capsRequested.cloneMutable();
+            caps2.setDoubleBuffered(false); // FIXME DBLBUFOFFSCRN
+            caps2.setOnscreen(false);
+            if(caps2.isPBuffer() && !pbufferAvailable) {
+                caps2.setPBuffer(false);
+            }
+            return caps2;
+        }
+        return capsRequested;
+    }
+
+    public static GLCapabilitiesImmutable fixGLPBufferGLCapabilities(GLCapabilitiesImmutable capsRequested)
+    {
+        if( capsRequested.getDoubleBuffered() || capsRequested.isOnscreen() || !capsRequested.isPBuffer()) {
+            // fix caps ..
+            GLCapabilities caps2 = (GLCapabilities) capsRequested.cloneMutable();
+            caps2.setDoubleBuffered(false); // FIXME DBLBUFOFFSCRN
+            caps2.setPBuffer(true);
+            return caps2;
+        }
+        return capsRequested;
+    }
+
+}