11 files changed, 558 insertions, 151 deletions

diff --git a/make/build.xml b/make/build.xml
index f978f8b..1ff74b8 100755
--- a/make/build.xml
+++ b/make/build.xml
@@ -468,6 +468,7 @@
     <jar destfile="${build}/gluegen-rt.jar">
       <fileset dir="${classes}">
         <include name="com/sun/gluegen/runtime/*.class" />
+        <include name="com/sun/gluegen/runtime/opengl/*.class" />
       </fileset>
     </jar>
 
diff --git a/make/gluegen.compiler.xml b/make/gluegen.compiler.xml
index bfab59e..c911553 100644
--- a/make/gluegen.compiler.xml
+++ b/make/gluegen.compiler.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project name="GlueGen-cpptasks" basedir="." >
 
-<target name="gluegen.cpptasks.configure.compiler">
+<target name="gluegen.cpptasks.configure.compiler" depends="setup.java.home.dir">
     <compiler id="compiler.cfg.linux" name="gcc">
       <compilerarg value="-m32" />
       <compilerarg value="-Wall" />
diff --git a/src/java/com/sun/gluegen/JavaConfiguration.java b/src/java/com/sun/gluegen/JavaConfiguration.java
index 3ce8ecb..e7787fc 100644
--- a/src/java/com/sun/gluegen/JavaConfiguration.java
+++ b/src/java/com/sun/gluegen/JavaConfiguration.java
@@ -546,14 +546,23 @@ public class JavaConfiguration {
     return (String) parentClass.get(className);
   }
 
+  public void dumpIgnores() {
+    System.err.println("Ignores: ");
+    for (Iterator iter = ignores.iterator(); iter.hasNext(); ) {
+        System.err.println("\t"+(String)iter.next());
+    }
+  }
+
   /** Returns true if this #define, function, struct, or field within
       a struct should be ignored during glue code generation. */
   public boolean shouldIgnore(String symbol) {
 
-    //System.err.println("CHECKING IGNORE: " + symbol);
+    // System.err.println("CHECKING IGNORE: " + symbol);
 
     // Simple case; the entire symbol is in the ignore table.
     if (ignores.contains(symbol)) {
+      // System.err.println("Ignore: "+symbol);
+      // dumpIgnores();
       return true;
     }
 
diff --git a/src/java/com/sun/gluegen/JavaEmitter.java b/src/java/com/sun/gluegen/JavaEmitter.java
index 9c5e786..fa0c783 100644
--- a/src/java/com/sun/gluegen/JavaEmitter.java
+++ b/src/java/com/sun/gluegen/JavaEmitter.java
@@ -318,6 +318,8 @@ public class JavaEmitter implements GlueEmitter {
       }
     }
 
+    validateFunctionsToBind(funcsToBindSet);
+
     ArrayList funcsToBind = new ArrayList(funcsToBindSet.size());
     funcsToBind.addAll(funcsToBindSet);
     // sort functions to make them easier to find in native code
@@ -611,6 +613,10 @@ public class JavaEmitter implements GlueEmitter {
     }
   }
 
+  protected void validateFunctionsToBind(Set/*FunctionSymbol*/ funcsSet) {
+    // nothing to be done per default
+  }
+
   /**
    * Generate all appropriate Java bindings for the specified C function
    * symbols.
diff --git a/src/java/com/sun/gluegen/opengl/GLConfiguration.java b/src/java/com/sun/gluegen/opengl/GLConfiguration.java
index e331d16..4538fae 100755
--- a/src/java/com/sun/gluegen/opengl/GLConfiguration.java
+++ b/src/java/com/sun/gluegen/opengl/GLConfiguration.java
@@ -173,12 +173,25 @@ public class GLConfiguration extends ProcAddressConfiguration {
     return res;
   }
 
+  public void dumpIgnores() {
+    System.err.println("GL Ignores: ");
+    for (Iterator iter = ignoredExtensions.iterator(); iter.hasNext(); ) {
+        System.err.println("\t"+(String)iter.next());
+    }
+  }
+
   public boolean shouldIgnore(String symbol) {
+    return shouldIgnore(symbol, false);
+  }
+
+  public boolean shouldIgnore(String symbol, boolean skipExtensionCheck) {
     // Check ignored extensions based on our knowledge of the static GL info
-    if (glInfo != null) {
+    if (!skipExtensionCheck && glInfo != null) {
       String extension = glInfo.getExtension(symbol);
       if (extension != null &&
           ignoredExtensions.contains(extension)) {
+        // System.err.println("GL Ignore: "+symbol+" within extension "+extension);
+        // dumpIgnores();
         return true;
       }
     }
diff --git a/src/java/com/sun/gluegen/opengl/GLEmitter.java b/src/java/com/sun/gluegen/opengl/GLEmitter.java
index 2666aa4..fb6c0dd 100644
--- a/src/java/com/sun/gluegen/opengl/GLEmitter.java
+++ b/src/java/com/sun/gluegen/opengl/GLEmitter.java
@@ -46,6 +46,7 @@ import com.sun.gluegen.*;
 import com.sun.gluegen.cgram.types.*;
 import com.sun.gluegen.procaddress.*;
 import com.sun.gluegen.runtime.*;
+import com.sun.gluegen.runtime.opengl.GLUnifiedName;
 
 /**
  * A subclass of ProcAddressEmitter with special OpenGL-specific
@@ -72,119 +73,16 @@ public class GLEmitter extends ProcAddressEmitter
     super.beginEmission(controls);
   }
 
-  static class UnifiedExtensionName implements Cloneable {
-    public UnifiedExtensionName(String name) {
-        this(name, normalizeARB(name));
-    }
-
-    protected UnifiedExtensionName(String orig, String uni) {
-        this.nameOrig=orig;
-        this.nameUni=uni;
-    }
-
-    public void useOriginal() {
-        nameUni=nameOrig;
-    }
-
-    public void addOrig(String name) {
-        if(nameOrig.indexOf(name)<0) {
-            nameOrig = nameOrig.concat(", "+name);
-        }
-    }
-
-    public void normalizeVEN() {
-        nameUni=normalizeVEN(nameUni);
-    }
-
-    public boolean isExtensionVEN() {
-        return isExtensionVEN(nameUni);
-    }
-
-    public boolean equals(Object obj) {
-        if(null==obj || !(obj instanceof UnifiedExtensionName)) return false;
-        UnifiedExtensionName uen = (UnifiedExtensionName) obj;
-        return nameUni.equals(uen.nameUni);
-    }
-
-    public String getCommentString() {
-        if(nameOrig.equals(nameUni)) {
-            return new String();
-        }
-        return " /** " + nameUni + ": Alias of: " + nameOrig + " */";
-    }
-
-    public String toString() {
-        if(nameOrig.equals(nameUni)) {
-            return nameUni;
-        }
-        return nameUni + " /* " + nameOrig + " */";
-    }
-
-    public Object clone() {
-        return new UnifiedExtensionName(nameOrig, nameUni);
-    }
-
-    //GL_XYZ : GL_XYZ, GL_XYZ_GL2, GL_XYZ_ARB, GL_XYZ_OES, GL_XYZ_OML
-    //GL_XYZ : GL_XYZ, GL_GL2_XYZ, GL_ARB_XYZ, GL_OES_XYZ, GL_OML_XYZ
-    //
-    // Pass-1 Unify ARB extensions with the same value
-    // Pass-2 Unify vendor extensions, 
-    //        if exist as an ARB extension with the same value.
-    // Pass-3 Emit
-
-    public static String[] extensionsARB = { "GL2", "ARB", "OES", "OML" };
-    public static String[] extensionsVEN = { "EXT", "NV", "ATI", "SGI", "SGIS", "SGIX", "HP", "IBM", "WIN" };
-
-    public static boolean isExtension(String[] extensions, String str) {
-        for(int i = extensions.length - 1 ; i>=0 ; i--) {
-            if(str.endsWith("_"+extensions[i])) {
-                return true;
-            }
-            if(str.startsWith("GL_"+extensions[i]+"_")) {
-                return true;
-            }
-        }
-        return false;
-    }
-
-    public static String normalize(String[] extensions, String str) {
-        boolean touched = false;
-        for(int i = extensions.length - 1 ; !touched && i>=0 ; i--) {
-            if(str.endsWith("_"+extensions[i])) {
-                str = str.substring(0, str.length()-1-extensions[i].length());
-                touched=true;
-            }
-            if(str.startsWith("GL_"+extensions[i]+"_")) {
-                str = "GL_"+str.substring(4+extensions[i].length());
-                touched=true;
-            }
-        }
-        return str;
-    }
-    public static String normalizeARB(String str) {
-        return normalize(extensionsARB, str);
-    }
-    public static String normalizeVEN(String str) {
-        return normalize(extensionsVEN, str);
-    }
-    public static boolean isExtensionVEN(String str) {
-        return isExtension(extensionsVEN, str);
-    }
-
-    protected String nameOrig;
-    protected String nameUni;
-  }
-
   static class DefineEntry implements Cloneable {
     public DefineEntry(String namestr, String valuestr, String optionalComment) {
-        this.name=new UnifiedExtensionName(namestr);
+        this.name=new GLUnifiedName(namestr);
         this.value=getJavaValue(namestr, valuestr);
         this.type=getJavaType(namestr, this.value);
         this.radix=getJavaRadix(namestr, valuestr);
         this.optionalComment=optionalComment;
     }
 
-    protected DefineEntry(UnifiedExtensionName name, String type, Object value, int radix, String optionalComment) {
+    protected DefineEntry(GLUnifiedName name, String type, Object value, int radix, String optionalComment) {
         this.name=name;
         this.value=value;
         this.type=type;
@@ -193,10 +91,13 @@ public class GLEmitter extends ProcAddressEmitter
     }
 
     public Object clone() {
-        return new DefineEntry((UnifiedExtensionName)name.clone(), type, value, radix, optionalComment);
+        return new DefineEntry((GLUnifiedName)name.clone(), type, value, radix, optionalComment);
     }
 
     public boolean equals(Object obj) {
+        if (obj == this) {
+          return true;
+        }
         if(null==obj || !(obj instanceof DefineEntry)) return false;
         DefineEntry de = (DefineEntry) obj;
         return name.equals(de.name) &&
@@ -238,14 +139,25 @@ public class GLEmitter extends ProcAddressEmitter
     public void normalizeVEN() {
         name.normalizeVEN();
     }
+    public boolean shouldIgnore(GLConfiguration cfg) {
+        return GLEmitter.shouldIgnore(name, cfg);
+    }
 
-    protected UnifiedExtensionName name;
+    protected GLUnifiedName name;
     protected Object value;
     protected String type;
     protected int radix;
     protected String optionalComment;
   }
 
+  protected static boolean shouldIgnore(GLUnifiedName name, GLConfiguration cfg) {
+        boolean res = cfg.shouldIgnore(name.getUni(), false);
+        for (Iterator iter = name.getOrig().iterator(); !res && iter.hasNext(); ) {
+            res = cfg.shouldIgnore((String)iter.next(), true);
+        }
+        return res;
+  }
+
   protected LinkedHashMap/*<String name, DefineEntry entry>*/ defineMap = new LinkedHashMap();
 
   public void beginDefines() throws Exception
@@ -256,28 +168,25 @@ public class GLEmitter extends ProcAddressEmitter
   /**
    * Pass-1 Unify ARB extensions with the same value
    */
-  public void emitDefine(String name, String value, String optionalComment) throws Exception
-  {
+  public void emitDefine(String name, String value, String optionalComment) throws Exception {
     if (cfg.allStatic() || cfg.emitInterface()) {
-      if (!cfg.shouldIgnore(name)) {
-        DefineEntry deNew = new DefineEntry(name, value, optionalComment);
-        DefineEntry deExist = (DefineEntry) defineMap.get(deNew.name.nameUni);
-        if(deExist!=null) {
-            if(deNew.equals(deExist)) {
-                if(deNew.getOptCommentString().length()>deExist.getOptCommentString().length()) {
-                    deExist.optionalComment=deNew.optionalComment;
-                }
-                deExist.addOrigName(deNew.name.nameOrig);
-                return; // done ..
+      DefineEntry deNew = new DefineEntry(name, value, optionalComment);
+      DefineEntry deExist = (DefineEntry) defineMap.get(deNew.name.getUni());
+      if(deExist!=null) {
+        if(deNew.equals(deExist)) {
+            if(deNew.getOptCommentString().length()>deExist.getOptCommentString().length()) {
+                deExist.optionalComment=deNew.optionalComment;
             }
-            deNew.name.useOriginal();
-            System.err.println("WARNING: Normalized entry with different value exists:"+
-                               "\n\tDef: "+deExist+
-                               "\n\tNew: "+deNew+
-                               "\n\t using original ARB entry");
+            deExist.addOrigName(name);
+            return; // done ..
         }
-        defineMap.put(deNew.name.nameUni, deNew);
+        deNew.name.resetUni();
+        System.err.println("WARNING: Normalized entry with different value exists:"+
+                           "\n\tDef: "+deExist+
+                           "\n\tNew: "+deNew+
+                           "\n\t using original ARB entry");
       }
+      defineMap.put(deNew.name.getUni(), deNew);
     }
   }
 
@@ -297,14 +206,14 @@ public class GLEmitter extends ProcAddressEmitter
             if(de.isExtensionVEN()) {
                 DefineEntry deUni = (DefineEntry) de.clone();
                 deUni.normalizeVEN();
-                DefineEntry deExist = (DefineEntry) defineMap.get(deUni.name.nameUni);
+                DefineEntry deExist = (DefineEntry) defineMap.get(deUni.name.getUni());
                 if(null!=deExist) {
                     if(deUni.equals(deExist)) {
                         if(deUni.getOptCommentString().length()>deExist.getOptCommentString().length()) {
                             deExist.optionalComment=deUni.optionalComment;
                         }
                         deIter.remove();
-                        deExist.addOrigName(deUni.name.nameOrig);
+                        deExist.addOrigName(de.name.getUni());
                     } else {
                         System.err.println("INFO: Normalized entry with different value exists:"+
                                            "\n\tDef: "+deExist+
@@ -318,12 +227,16 @@ public class GLEmitter extends ProcAddressEmitter
         deIter = defineMap.values().iterator();
         while( deIter.hasNext() ) {
             DefineEntry de = (DefineEntry) deIter.next();
+            if (de.shouldIgnore((GLConfiguration)cfg)) {
+                continue;
+            }
             String comment = de.getOptCommentString();
             if (comment.length() != 0) {
               javaWriter().println(comment);
             } else {
                 comment = de.name.getCommentString();
                 if (comment.length() != 0) {
+                  de.name.resetOriginal(); // just shorten the comment space
                   javaWriter().println(comment);
                 }
             }
@@ -410,6 +323,56 @@ public class GLEmitter extends ProcAddressEmitter
   //----------------------------------------------------------------------
   // Internals only below this point
   //
+
+  protected void validateFunctionsToBind(Set/*FunctionSymbol*/ funcsSet) {
+    ArrayList newUniFuncs = new ArrayList();
+    for (Iterator iter = funcsSet.iterator(); iter.hasNext(); ) {
+      FunctionSymbol fsOrig = (FunctionSymbol) iter.next();
+      GLUnifiedName uniName = new GLUnifiedName(fsOrig.getName());
+      if (GLEmitter.shouldIgnore(uniName, (GLConfiguration)cfg)) {
+          iter.remove(); // remove ignored function 
+      } else {
+          if( uniName.isExtensionARB() && 
+              !((GLConfiguration)cfg).skipProcAddressGen(fsOrig.getName()) ) {
+              FunctionSymbol fsUni = new FunctionSymbol(uniName.getUni(), fsOrig.getType());
+              if(!funcsSet.contains(fsUni)) {
+                newUniFuncs.add(fsUni); // add new uni name
+                System.err.println("INFO: New ARB Normalized Function:"+
+                                   "\n\tARB: "+fsOrig+
+                                   "\n\tUNI: "+fsUni);
+              } else {
+                System.err.println("INFO: Dub ARB Normalized Function:"+
+                                   "\n\tARB: "+fsOrig+
+                                   "\n\tDUB: "+fsUni);
+              }
+              iter.remove(); // remove ARB function
+              // make the function being dynamical fetched, due to it's dynamic naming scheme
+              ((GLConfiguration)cfg).addForceProcAddressGen(uniName.getUni());
+          }
+      }
+    }
+    funcsSet.addAll(newUniFuncs);
+
+    for (Iterator iter = funcsSet.iterator(); iter.hasNext(); ) {
+      FunctionSymbol fsOrig = (FunctionSymbol) iter.next();
+      GLUnifiedName uniName = new GLUnifiedName(fsOrig.getName());
+      if(uniName.isExtensionVEN()) {
+          uniName.normalizeVEN();
+          if (GLEmitter.shouldIgnore(uniName, (GLConfiguration)cfg)) {
+              iter.remove(); // remove ignored function 
+          } else {
+              FunctionSymbol fsUni = new FunctionSymbol(uniName.getUni(), fsOrig.getType());
+              if(funcsSet.contains(fsUni)) {
+                  iter.remove(); // remove VEN function (already incl. as ARB)
+                  System.err.println("INFO: Dub VEN Function:"+
+                                     "\n\tVEN: "+fsOrig+
+                                     "\n\tDUB: "+fsUni);
+              }
+          }
+      }
+    }
+  }
+
   
   protected void generateModifiedEmitters(JavaMethodBindingEmitter baseJavaEmitter, List emitters) {
     List superEmitters = new ArrayList();
@@ -439,4 +402,75 @@ public class GLEmitter extends ProcAddressEmitter
   protected GLConfiguration getGLConfig() {
     return (GLConfiguration) getConfig();
   }
+
+  protected void endProcAddressTable() throws Exception
+  {
+    PrintWriter w = tableWriter;
+
+    w.println("  /**");
+    w.println("   * This is a convenience method to get (by name) the native function");
+    w.println("   * pointer for a given function. It lets you avoid having to");
+    w.println("   * manually compute the &quot;" + PROCADDRESS_VAR_PREFIX + " + ");
+    w.println("   * &lt;functionName&gt;&quot; member variable name and look it up via");
+    w.println("   * reflection; it also will throw an exception if you try to get the");
+    w.println("   * address of an unknown function, or one that is statically linked");
+    w.println("   * and therefore does not have a function pointer in this table.");
+    w.println("   *");
+    w.println("   * @throws RuntimeException if the function pointer was not found in");
+    w.println("   *   this table, either because the function was unknown or because");
+    w.println("   *   it was statically linked.");
+    w.println("   */");
+    w.println("  public long getAddressFor(String functionNameUsr) {");
+    w.println("    String functionNameBase = com.sun.gluegen.runtime.opengl.GLUnifiedName.normalizeVEN(com.sun.gluegen.runtime.opengl.GLUnifiedName.normalizeARB(functionNameUsr));");
+    w.println("    String addressFieldNameBase = " + getProcAddressConfig().gluegenRuntimePackage() + ".ProcAddressHelper.PROCADDRESS_VAR_PREFIX + functionNameBase;");
+    w.println("    java.lang.reflect.Field addressField = null;");
+    w.println("    int  funcNamePermNum = com.sun.gluegen.runtime.opengl.GLUnifiedName.getNamePermutationNumber(functionNameBase);");
+    w.println("    for(int i = 0; null==addressField && i < funcNamePermNum; i++) {");
+    w.println("        String addressFieldName = com.sun.gluegen.runtime.opengl.GLUnifiedName.getNamePermutation(addressFieldNameBase, i);");
+    w.println("        try {");
+    w.println("          addressField = getClass().getField(addressFieldName);");
+    w.println("        } catch (Exception e) { }");
+    w.println("    }");
+    w.println("");
+    w.println("    if(null==addressField) {");
+    w.println("      // The user is calling a bogus function or one which is not");
+    w.println("      // runtime linked");
+    w.println("      throw new RuntimeException(");
+    w.println("          \"WARNING: Address field query failed for \\\"\" + functionNameBase + \"\\\"/\\\"\" + functionNameUsr +");
+    w.println("          \"\\\"; it's either statically linked or address field is not a known \" +");
+    w.println("          \"function\");");
+    w.println("    } ");
+    w.println("    try {");
+    w.println("      return addressField.getLong(this);");
+    w.println("    } catch (Exception e) {");
+    w.println("      throw new RuntimeException(");
+    w.println("          \"WARNING: Address query failed for \\\"\" + functionNameBase + \"\\\"/\\\"\" + functionNameUsr +");
+    w.println("          \"\\\"; it's either statically linked or is not a known \" +");
+    w.println("          \"function\", e);");
+    w.println("    }");
+    w.println("  }");
+
+    w.println("} // end of class " + tableClassName);
+    w.flush();
+    w.close();
+  }
+
+  protected void emitProcAddressTableEntryForSymbol(FunctionSymbol cFunc)
+  {
+    emitProcAddressTableEntryForString(cFunc.getName());
+  }
+
+  protected void emitProcAddressTableEntryForString(String str)
+  {
+    // Deal gracefully with forced proc address generation in the face
+    // of having the function pointer typedef in the header file too
+    if (emittedTableEntries.contains(str))
+      return;
+    emittedTableEntries.add(str);
+    tableWriter.print("  public long ");
+    tableWriter.print(PROCADDRESS_VAR_PREFIX);
+    tableWriter.print(str);
+    tableWriter.println(";");
+  }
+
 }
diff --git a/src/java/com/sun/gluegen/procaddress/ProcAddressConfiguration.java b/src/java/com/sun/gluegen/procaddress/ProcAddressConfiguration.java
index e5edd0d..de4000c 100755
--- a/src/java/com/sun/gluegen/procaddress/ProcAddressConfiguration.java
+++ b/src/java/com/sun/gluegen/procaddress/ProcAddressConfiguration.java
@@ -77,9 +77,7 @@ public class ProcAddressConfiguration extends JavaConfiguration
       }
     else if (cmd.equalsIgnoreCase("ForceProcAddressGen"))
       {
-        String sym = readString("ForceProcAddressGen", tok, filename, lineNo);
-        forceProcAddressGen.add(sym);
-        forceProcAddressGenSet.add(sym);
+        addForceProcAddressGen( readString("ForceProcAddressGen", tok, filename, lineNo) );
       }
     else if (cmd.equalsIgnoreCase("GetProcAddressTableExpr"))
       {
@@ -258,4 +256,9 @@ public class ProcAddressConfiguration extends JavaConfiguration
   public boolean forceProcAddressGen(String funcName) {
     return forceProcAddressGenSet.contains(funcName);
   }
+
+  public void addForceProcAddressGen(String funcName) {
+        forceProcAddressGen.add(funcName);
+        forceProcAddressGenSet.add(funcName);
+  }
 }
diff --git a/src/java/com/sun/gluegen/procaddress/ProcAddressEmitter.java b/src/java/com/sun/gluegen/procaddress/ProcAddressEmitter.java
index bb81961..6b837c1 100755
--- a/src/java/com/sun/gluegen/procaddress/ProcAddressEmitter.java
+++ b/src/java/com/sun/gluegen/procaddress/ProcAddressEmitter.java
@@ -57,10 +57,10 @@ public class ProcAddressEmitter extends JavaEmitter
   public static final String PROCADDRESS_VAR_PREFIX = ProcAddressHelper.PROCADDRESS_VAR_PREFIX;
   protected static final String WRAP_PREFIX = "dispatch_";
   private TypeDictionary typedefDictionary;
-  private PrintWriter tableWriter;
-  private Set emittedTableEntries;
-  private String tableClassPackage;
-  private String tableClassName;
+  protected PrintWriter tableWriter;
+  protected Set emittedTableEntries;
+  protected String tableClassPackage;
+  protected String tableClassName;
 
   public void beginFunctions(TypeDictionary typedefDictionary,
                              TypeDictionary structDictionary,
@@ -283,7 +283,7 @@ public class ProcAddressEmitter extends JavaEmitter
     return shouldWrap;
   }
 
-  private void beginProcAddressTable() throws Exception
+  protected void beginProcAddressTable() throws Exception
   {
     tableClassPackage = getProcAddressConfig().tableClassPackage();
     tableClassName    = getProcAddressConfig().tableClassName();
@@ -332,7 +332,7 @@ public class ProcAddressEmitter extends JavaEmitter
     }
   }
 
-  private void endProcAddressTable() throws Exception
+  protected void endProcAddressTable() throws Exception
   {
     PrintWriter w = tableWriter;
 
diff --git a/src/java/com/sun/gluegen/runtime/ProcAddressHelper.java b/src/java/com/sun/gluegen/runtime/ProcAddressHelper.java
index 5c3c034..7e2708f 100644
--- a/src/java/com/sun/gluegen/runtime/ProcAddressHelper.java
+++ b/src/java/com/sun/gluegen/runtime/ProcAddressHelper.java
@@ -49,9 +49,9 @@ import java.io.*;
 
 public class ProcAddressHelper {
   public static final String PROCADDRESS_VAR_PREFIX = "_addressof_";
-  private static boolean DEBUG;
-  private static String DEBUG_PREFIX;
-  private static int debugNum;
+  protected static boolean DEBUG;
+  protected static String DEBUG_PREFIX;
+  protected static int debugNum;
 
   static {
     AccessController.doPrivileged(new PrivilegedAction() {
@@ -65,12 +65,8 @@ public class ProcAddressHelper {
       });
   }
 
-  public static void resetProcAddressTable(Object table,
-                                           DynamicLookupHelper lookup) throws RuntimeException {
-    Class tableClass = table.getClass();
-    java.lang.reflect.Field[] fields = tableClass.getFields();
+  protected static PrintStream getDebugOutStream() {
     PrintStream out = null;
-    
     if (DEBUG) {
       if (DEBUG_PREFIX != null) {
         try {
@@ -83,7 +79,18 @@ public class ProcAddressHelper {
       } else {
         out = System.err;
       }
-      out.println("ProcAddressHelper.resetProcAddressTable(" + table.getClass().getName() + ")");
+    }
+    return out;
+  }
+
+  public static void resetProcAddressTable(Object table,
+                                           DynamicLookupHelper lookup) throws RuntimeException {
+    Class tableClass = table.getClass();
+    java.lang.reflect.Field[] fields = tableClass.getFields();
+    PrintStream dout = getDebugOutStream();
+    
+    if (DEBUG) {
+      dout.println("ProcAddressHelper.resetProcAddressTable(" + table.getClass().getName() + ")");
     }
     for (int i = 0; i < fields.length; ++i) {
       String addressFieldName = fields[i].getName();
@@ -100,7 +107,7 @@ public class ProcAddressHelper {
         // set the current value of the proc address variable in the table object
         addressField.setLong(table, newProcAddress); 
         if (DEBUG) {
-          out.println("  " + addressField.getName() + " = 0x" + Long.toHexString(newProcAddress));
+          dout.println("  " + addressField.getName() + " = 0x" + Long.toHexString(newProcAddress));
         }
       } catch (Exception e) {
         throw new RuntimeException("Can not get proc address for method \"" +
@@ -109,9 +116,9 @@ public class ProcAddressHelper {
       }
     }
     if (DEBUG) {
-      out.flush();
+      dout.flush();
       if (DEBUG_PREFIX != null) {
-        out.close();
+        dout.close();
       }
     }
   }
diff --git a/src/java/com/sun/gluegen/runtime/opengl/GLProcAddressHelper.java b/src/java/com/sun/gluegen/runtime/opengl/GLProcAddressHelper.java
new file mode 100644
index 0000000..f8858d2
--- /dev/null
+++ b/src/java/com/sun/gluegen/runtime/opengl/GLProcAddressHelper.java
@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 2003-2005 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.
+ */
+
+package com.sun.gluegen.runtime.opengl;
+
+import com.sun.gluegen.runtime.*;
+
+import java.security.*;
+
+// Debugging only
+import java.io.PrintStream;
+
+/** Helper class containing constants and methods to assist with the
+    manipulation of auto-generated ProcAddressTables. */
+
+public class GLProcAddressHelper extends ProcAddressHelper {
+
+  public static void resetProcAddressTable(Object table,
+                                           DynamicLookupHelper lookup) throws RuntimeException {
+    Class tableClass = table.getClass();
+    java.lang.reflect.Field[] fields = tableClass.getFields();
+    PrintStream dout = getDebugOutStream();
+    
+    if (DEBUG) {
+      dout.println("ProcAddressHelper.resetProcAddressTable(" + table.getClass().getName() + ")");
+    }
+    for (int i = 0; i < fields.length; ++i) {
+      String addressFieldName = fields[i].getName();
+      if (!addressFieldName.startsWith(ProcAddressHelper.PROCADDRESS_VAR_PREFIX)) {
+        // not a proc address variable
+        continue;
+      }
+      int startOfMethodName = ProcAddressHelper.PROCADDRESS_VAR_PREFIX.length();
+      String funcNameBase = addressFieldName.substring(startOfMethodName);
+      java.lang.reflect.Field addressField;
+      try {
+        addressField = fields[i];
+        assert(addressField.getType() == Long.TYPE);
+      } catch (Exception e) {
+        throw new RuntimeException("Can not get proper proc address field for method \"" +
+                                   funcNameBase + "\": Couldn't get field \"" + addressFieldName +
+                                   "\" in class " + tableClass.getName(), e);
+      }
+      long newProcAddress = 0;
+      int  funcNamePermNum = GLUnifiedName.getNamePermutationNumber(funcNameBase);
+      for(int j = 0; 0==newProcAddress && j < funcNamePermNum; j++) {
+          String funcName = GLUnifiedName.getNamePermutation(funcNameBase, j);
+          try {
+            if (DEBUG) {
+              dout.println("  try function lookup: " + funcName + " / " + funcNameBase);
+            }
+            newProcAddress = lookup.dynamicLookupFunction(funcName);
+          } catch (Exception e) { 
+            if (DEBUG) {
+              dout.println(e);
+              e.printStackTrace();
+            }
+          }
+      } 
+      try {
+        // set the current value of the proc address variable in the table object
+        addressField.setLong(table, newProcAddress); 
+        if (DEBUG) {
+          dout.println("  " + addressField.getName() + " = 0x" + Long.toHexString(newProcAddress));
+        }
+      } catch (Exception e) {
+        throw new RuntimeException("Can not set proc address field for method \"" +
+                                   funcNameBase + "\": Couldn't set field \"" + addressFieldName +
+                                   "\" in class " + tableClass.getName(), e);
+      }
+    }
+    if (DEBUG) {
+      dout.flush();
+      if (DEBUG_PREFIX != null) {
+        dout.close();
+      }
+    }
+  }
+}
diff --git a/src/java/com/sun/gluegen/runtime/opengl/GLUnifiedName.java b/src/java/com/sun/gluegen/runtime/opengl/GLUnifiedName.java
new file mode 100644
index 0000000..44b5b1b
--- /dev/null
+++ b/src/java/com/sun/gluegen/runtime/opengl/GLUnifiedName.java
@@ -0,0 +1,222 @@
+/*
+ * Copyright (c) 2003-2005 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.
+ * 
+ */
+
+package com.sun.gluegen.runtime.opengl;
+
+import java.util.*;
+import com.sun.gluegen.runtime.*;
+
+public class GLUnifiedName implements Cloneable {
+    //GL_XYZ : GL_XYZ, GL_XYZ_GL2, GL_XYZ_ARB, GL_XYZ_OES, GL_XYZ_OML
+    //GL_XYZ : GL_XYZ, GL_GL2_XYZ, GL_ARB_XYZ, GL_OES_XYZ, GL_OML_XYZ
+    //
+    // Pass-1 Unify ARB extensions with the same value
+    // Pass-2 Unify vendor extensions, 
+    //        if exist as an ARB extension with the same value.
+    // Pass-3 Emit
+
+    public static final String[] extensionsARB = { "GL2", "ARB", "OES",  "OML" };
+    public static final String[] extensionsVEN = { "EXT", "SGI", "SGIS", "SGIX", "NV", "AMD", "ATI", "HP", "IBM", "WIN" };
+
+    public static final boolean isExtension(String[] extensions, String str) {
+        for(int i = extensions.length - 1 ; i>=0 ; i--) {
+            if(str.endsWith(extensions[i])) {
+                return true;
+            }
+            if(str.startsWith("GL_"+extensions[i]+"_")) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public static final String normalize(String[] extensions, String str) {
+        boolean touched = false;
+        for(int i = extensions.length - 1 ; !touched && i>=0 ; i--) {
+            if(str.endsWith("_"+extensions[i])) {
+                // enums
+                str = str.substring(0, str.length()-1-extensions[i].length());
+                touched=true;
+            } else if(str.endsWith(extensions[i])) {
+                // functions
+                str = str.substring(0, str.length()-extensions[i].length());
+                touched=true;
+            }
+            if(str.startsWith("GL_"+extensions[i]+"_")) {
+                str = "GL_"+str.substring(4+extensions[i].length());
+                touched=true;
+            }
+        }
+        return str;
+    }
+    public static final String normalizeARB(String str) {
+        return normalize(extensionsARB, str);
+    }
+    public static final boolean isExtensionARB(String str) {
+        return isExtension(extensionsARB, str);
+    }
+    public static final String normalizeVEN(String str) {
+        return normalize(extensionsVEN, str);
+    }
+    public static final boolean isExtensionVEN(String str) {
+        return isExtension(extensionsVEN, str);
+    }
+
+    public static final int getNamePermutationNumber(String name) {
+        if(isExtensionARB(name) || isExtensionVEN(name)) {
+            // no name permutation, if it's already a known extension
+            return 1;
+        }
+        return 1 + extensionsARB.length + extensionsVEN.length;
+    }
+
+    public static final String getNamePermutation(String name, int i) {
+        // identity
+        if(i==0) {
+            return name;
+        }
+        if(0>i || i>=(1+extensionsARB.length + extensionsVEN.length)) {
+            throw new RuntimeException("Index out of range [0.."+(1+extensionsARB.length+extensionsVEN.length-1)+"]: "+i);
+        }
+        // ARB
+        i-=1;
+        if(i<extensionsARB.length) {
+            return name+extensionsARB[i];
+        }
+        // VEN
+        i-=extensionsARB.length;
+        return name+extensionsVEN[i];
+    }
+
+    /** 
+     */
+
+    public GLUnifiedName(String name) {
+        this(name, normalizeARB(name));
+    }
+
+    protected GLUnifiedName(String orig, String uni) {
+        this.nameOrig=new ArrayList();
+        this.nameOrig.add(orig);
+        this.nameUni=uni;
+    }
+
+    protected GLUnifiedName(List origs, String uni) {
+        this.nameOrig=new ArrayList();
+        this.nameOrig.addAll(origs);
+        this.nameUni=uni;
+    }
+
+    public void resetUni() {
+        nameUni=(String)nameOrig.get(0);
+    }
+    public void resetOriginal() {
+        nameOrig.clear();
+        nameOrig.add(nameUni);
+    }
+
+    public void addOrig(String name) {
+        if(!nameOrig.contains(name)) {
+            nameOrig.add(name);
+        }
+    }
+
+    public boolean isExtensionARB() {
+        boolean res = false;
+        for (Iterator iter = nameOrig.iterator(); !res && iter.hasNext(); ) {
+            res = isExtensionARB((String)iter.next());
+        }
+        return res;
+    }
+
+    public void normalizeVEN() {
+        nameUni=normalizeVEN(nameUni);
+    }
+
+    public boolean isExtensionVEN() {
+        boolean res = false;
+        for (Iterator iter = nameOrig.iterator(); !res && iter.hasNext(); ) {
+            res = isExtensionVEN((String)iter.next());
+        }
+        return res;
+    }
+
+    public boolean equals(Object obj) {
+        if (obj == this) {
+          return true;
+        }
+        if(null==obj || !(obj instanceof GLUnifiedName)) return false;
+        GLUnifiedName uen = (GLUnifiedName) obj;
+        return nameUni.equals(uen.nameUni);
+    }
+
+    public String getCommentString() {
+        if(nameOrig.size()==1 && ((String)nameOrig.get(0)).equals(nameUni)) {
+            return new String();
+        }
+        String res = " /** " + nameUni + ": Alias of: ";
+        for (Iterator iter = nameOrig.iterator(); iter.hasNext(); ) {
+            res = res.concat((String)iter.next()+", ");
+        }
+        res = res.concat(" */");
+        return res;
+    }
+
+    public String toString() {
+        if(nameOrig.size()==1 && ((String)nameOrig.get(0)).equals(nameUni)) {
+            return nameUni;
+        }
+        String res = nameUni + " /* " ;
+        for (Iterator iter = nameOrig.iterator(); iter.hasNext(); ) {
+            res = res.concat((String)iter.next()+", ");
+        }
+        res = res.concat(" */");
+        return res;
+    }
+
+    public Object clone() {
+        return new GLUnifiedName(nameOrig, nameUni);
+    }
+
+    public String getUni() { return nameUni; }
+    public List   getOrig() { return nameOrig; }
+    public String getOrig(int i) { return (String)nameOrig.get(i); }
+
+    private List   nameOrig;
+    private String nameUni;
+}
+