Relocation: GlueGen GL Parts to Jogl

5 files changed, 2308 insertions, 0 deletions

diff --git a/src/java/com/sun/gluegen/opengl/BuildComposablePipeline.java b/src/java/com/sun/gluegen/opengl/BuildComposablePipeline.java
new file mode 100644
index 000000000..270a1243a
--- /dev/null
+++ b/src/java/com/sun/gluegen/opengl/BuildComposablePipeline.java
@@ -0,0 +1,1088 @@
+/*
+ * 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.gluegen.opengl;
+
+import com.sun.gluegen.*;
+
+import java.lang.reflect.*;
+import java.io.*;
+import java.nio.Buffer;
+import java.util.*;
+import java.util.ArrayList;
+
+public class BuildComposablePipeline {
+
+    public static final int GEN_DEBUG = 1 << 0; // default
+    public static final int GEN_TRACE = 1 << 1; // default
+    public static final int GEN_CUSTOM = 1 << 2;
+    public static final int GEN_PROLOG_XOR_DOWNSTREAM = 1 << 3;
+    int mode;
+    private String outputDir;
+    private String outputPackage;
+    private String outputName;
+    private Class<?> classToComposeAround;
+    private Class<?> classPrologOpt;
+    private Class<?> classDownstream;
+    // Only desktop OpenGL has immediate mode glBegin / glEnd
+    private boolean hasImmediateMode;
+    // Desktop OpenGL and GLES1 have GL_STACK_OVERFLOW and GL_STACK_UNDERFLOW errors
+    private boolean hasStackOverflow;
+
+    public static Class<?> getClass(String name) {
+        Class<?> clazz = null;
+        try {
+            clazz = Class.forName(name);
+        } catch (Exception e) {
+            throw new RuntimeException(
+                    "Could not find class \"" + name + "\"", e);
+        }
+        return clazz;
+    }
+
+    public static Method getMethod(Class<?> clazz, Method m) {
+        Method res = null;
+        try {
+            res = clazz.getMethod(m.getName(), m.getParameterTypes());
+        } catch (Exception e) {
+        }
+        return res;
+    }
+
+    public static void main(String[] args) {
+        String classToComposeAroundName = args[0];
+        Class<?> classPrologOpt, classDownstream;
+        Class<?> classToComposeAround = getClass(classToComposeAroundName);
+
+        String outputDir = args[1];
+        String outputPackage, outputName;
+        int mode;
+
+        if (args.length > 2) {
+            String outputClazzName = args[2];
+            outputPackage = getPackageName(outputClazzName);
+            outputName = getBaseClassName(outputClazzName);
+            classPrologOpt = getClass(args[3]);
+            classDownstream = getClass(args[4]);
+            mode = GEN_CUSTOM;
+            if (args.length > 5) {
+                if (args[5].equals("prolog_xor_downstream")) {
+                    mode |= GEN_PROLOG_XOR_DOWNSTREAM;
+                }
+            }
+        } else {
+            outputPackage = getPackageName(classToComposeAroundName);
+            outputName = null; // TBD ..
+            classPrologOpt = null;
+            classDownstream = classToComposeAround;
+            mode = GEN_DEBUG | GEN_TRACE;
+        }
+
+        BuildComposablePipeline composer =
+                new BuildComposablePipeline(mode, outputDir, outputPackage, outputName, classToComposeAround, classPrologOpt, classDownstream);
+
+        try {
+            composer.emit();
+        } catch (IOException e) {
+            throw new RuntimeException(
+                    "Error generating composable pipeline source files", e);
+        }
+    }
+
+    protected BuildComposablePipeline(int mode, String outputDir, String outputPackage, String outputName,
+            Class<?> classToComposeAround, Class<?> classPrologOpt, Class<?> classDownstream) {
+        this.mode = mode;
+        this.outputDir = outputDir;
+        this.outputPackage = outputPackage;
+        this.outputName = outputName;
+        this.classToComposeAround = classToComposeAround;
+        this.classPrologOpt = classPrologOpt;
+        this.classDownstream = classDownstream;
+
+        if (!classToComposeAround.isInterface()) {
+            throw new IllegalArgumentException(
+                    classToComposeAround.getName() + " is not an interface class");
+        }
+
+        try {
+            hasImmediateMode =
+                    (classToComposeAround.getMethod("glBegin", new Class<?>[]{Integer.TYPE}) != null);
+        } catch (Exception e) {
+        }
+
+        try {
+            hasStackOverflow =
+                    (classToComposeAround.getField("GL_STACK_OVERFLOW") != null);
+        } catch (Exception e) {
+        }
+    }
+
+    /**
+     * Emit the java source code for the classes that comprise the composable
+     * pipeline.
+     */
+    public void emit() throws IOException {
+
+        List<Method> publicMethodsRaw = Arrays.asList(classToComposeAround.getMethods());
+
+        Set<PlainMethod> publicMethodsPlain = new HashSet<PlainMethod>();
+        for (Iterator<Method> iter = publicMethodsRaw.iterator(); iter.hasNext();) {
+            Method method = iter.next();
+            // Don't hook methods which aren't real GL methods,
+            // such as the synthetic "isGL2ES2" "getGL2ES2"
+            String name = method.getName();
+            boolean runHooks = name.startsWith("gl");
+            if (!name.startsWith("getGL") && !name.startsWith("isGL") && !name.equals("toString")) {
+                publicMethodsPlain.add(new PlainMethod(method, runHooks));
+            }
+        }
+
+        if (0 != (mode & GEN_DEBUG)) {
+            (new DebugPipeline(outputDir, outputPackage, classToComposeAround, classDownstream)).emit(publicMethodsPlain.iterator());
+        }
+        if (0 != (mode & GEN_TRACE)) {
+            (new TracePipeline(outputDir, outputPackage, classToComposeAround, classDownstream)).emit(publicMethodsPlain.iterator());
+        }
+        if (0 != (mode & GEN_CUSTOM)) {
+            (new CustomPipeline(mode, outputDir, outputPackage, outputName, classToComposeAround, classPrologOpt, classDownstream)).emit(publicMethodsPlain.iterator());
+        }
+    }
+
+    public static String getPackageName(String clazzName) {
+        int lastDot = clazzName.lastIndexOf('.');
+        if (lastDot == -1) {
+            // no package, class is at root level
+            return null;
+        }
+        return clazzName.substring(0, lastDot);
+    }
+
+    public static String getBaseClassName(String clazzName) {
+        int lastDot = clazzName.lastIndexOf('.');
+        if (lastDot == -1) {
+            // no package, class is at root level
+            return clazzName;
+        }
+        return clazzName.substring(lastDot + 1);
+    }
+
+    //-------------------------------------------------------
+    protected class PlainMethod {
+
+        Method m;
+        boolean runHooks;
+
+        PlainMethod(Method m, boolean runHooks) {
+            this.m = m;
+            this.runHooks = runHooks;
+        }
+
+        public Method getWrappedMethod() {
+            return m;
+        }
+
+        public boolean runHooks() {
+            return runHooks;
+        }
+
+        @Override
+        public boolean equals(Object obj) {
+            if (obj instanceof PlainMethod) {
+                PlainMethod b = (PlainMethod) obj;
+                boolean res =
+                        m.getName().equals(b.m.getName())
+                        && m.getModifiers() == b.m.getModifiers()
+                        && m.getReturnType().equals(b.m.getReturnType())
+                        && Arrays.equals(m.getParameterTypes(), b.m.getParameterTypes());
+                return res;
+            }
+            return false;
+        }
+
+        @Override
+        public int hashCode() {
+            int hash = m.getName().hashCode() ^ m.getModifiers() ^ m.getReturnType().hashCode();
+            Class<?>[] args = m.getParameterTypes();
+            for (int i = 0; i < args.length; i++) {
+                hash ^= args[i].hashCode();
+            }
+            return hash;
+        }
+
+        @Override
+        public String toString() {
+            Class<?>[] args = m.getParameterTypes();
+            StringBuilder argsString = new StringBuilder();
+            argsString.append("(");
+            for (int i = 0; i < args.length; i++) {
+                if (i > 0) {
+                    argsString.append(", ");
+                }
+                argsString.append(args[i].getName());
+            }
+            argsString.append(")");
+            return m.toString()
+                    + "\n\tname: " + m.getName()
+                    + "\n\tmods: " + m.getModifiers()
+                    + "\n\tretu: " + m.getReturnType()
+                    + "\n\targs[" + args.length + "]: " + argsString.toString();
+        }
+    }
+
+    /**
+     * Emits a Java source file that represents one element of the composable
+     * pipeline.
+     */
+    protected abstract class PipelineEmitter {
+
+        private File file;
+        protected String basePackage;
+        protected String baseName; // does not include package!
+        protected String downstreamPackage;
+        protected String downstreamName; // does not include package!
+        protected String prologPackageOpt = null;
+        protected String prologNameOpt = null; // does not include package!
+        protected String outputDir;
+        protected String outputPackage;
+        protected Class<?> baseInterfaceClass;
+        protected Class<?> prologClassOpt = null;
+        protected Class<?> downstreamClass;
+
+        /**
+         * @param outputDir the directory into which the pipeline classes will be
+         * generated.
+         * @param baseInterfaceClassName the full class name (including package,
+         * e.g. "java.lang.String") of the interface that the pipeline wraps
+         * @exception IllegalArgumentException if classToComposeAround is not an
+         * interface.
+         */
+        PipelineEmitter(String outputDir, String outputPackage, Class<?> baseInterfaceClass, Class<?> prologClassOpt, Class<?> downstreamClass) {
+            this.outputDir = outputDir;
+            this.outputPackage = outputPackage;
+            this.baseInterfaceClass = baseInterfaceClass;
+            this.prologClassOpt = prologClassOpt;
+            this.downstreamClass = downstreamClass;
+
+            basePackage = getPackageName(baseInterfaceClass.getName());
+            baseName = getBaseClassName(baseInterfaceClass.getName());
+            downstreamPackage = getPackageName(downstreamClass.getName());
+            downstreamName = getBaseClassName(downstreamClass.getName());
+            if (null != prologClassOpt) {
+                prologPackageOpt = getPackageName(prologClassOpt.getName());
+                prologNameOpt = getBaseClassName(prologClassOpt.getName());
+            }
+        }
+
+        public void emit(Iterator<PlainMethod> methodsToWrap) throws IOException {
+            String outputClassName = getOutputName();
+            this.file = new File(outputDir + File.separatorChar + outputClassName + ".java");
+            String parentDir = file.getParent();
+            if (parentDir != null) {
+                File pDirFile = new File(parentDir);
+                pDirFile.mkdirs();
+            }
+
+            PrintWriter output = new PrintWriter(new BufferedWriter(new FileWriter(file)));
+
+            List<Class<?>> baseInterfaces = Arrays.asList(baseInterfaceClass.getInterfaces());
+            HashSet<Class<?>> clazzList = new HashSet<Class<?>>();
+            clazzList.add(baseInterfaceClass);
+            clazzList.addAll(baseInterfaces);
+            int ifNamesNumber = clazzList.size();
+
+            // keep original order ..
+            clazzList.clear();
+            String[] ifNames = new String[ifNamesNumber];
+            {
+                int i = 0;
+
+                for (Iterator<Class<?>> iter = baseInterfaces.iterator(); iter.hasNext();) {
+                    Class<?> ifClass = iter.next();
+                    if (!clazzList.contains(ifClass)) {
+                        ifNames[i++] = ifClass.getName();
+                        clazzList.add(ifClass);
+                    }
+                }
+
+                if (null != baseInterfaceClass && !clazzList.contains(baseInterfaceClass)) {
+                    ifNames[i++] = baseInterfaceClass.getName();
+                    clazzList.add(baseInterfaceClass);
+                }
+            }
+
+            clazzList.add(downstreamClass);
+            if (null != prologClassOpt) {
+                clazzList.add(prologClassOpt);
+            }
+
+            ArrayList<String> imports = new ArrayList<String>();
+            imports.add("java.io.*");
+            imports.add("javax.media.opengl.*");
+            imports.add("com.jogamp.gluegen.runtime.*");
+            imports.add(Buffer.class.getPackage().getName()+".*");
+            for (Class<?> clasS : clazzList) {
+                imports.add(clasS.getName());
+            }
+
+            CodeGenUtils.emitJavaHeaders(output,
+                    outputPackage,
+                    outputClassName,
+                    true,
+                    imports,
+                    new String[]{"public"},
+                    ifNames,
+                    null,
+                    new CodeGenUtils.EmissionCallback() {
+                        public void emit(PrintWriter w) {
+                            emitClassDocComment(w);
+                        }
+                    });
+
+            preMethodEmissionHook(output);
+
+            constructorHook(output);
+
+            emitGLIsMethods(output);
+            emitGLGetMethods(output);
+
+            while (methodsToWrap.hasNext()) {
+                PlainMethod pm = methodsToWrap.next();
+                Method m = pm.getWrappedMethod();
+                emitMethodDocComment(output, m);
+                emitSignature(output, m);
+                emitBody(output, m, pm.runHooks());
+            }
+
+            postMethodEmissionHook(output);
+
+            output.println();
+            output.print("  private " + downstreamName + " " + getDownstreamObjectName() + ";");
+
+            // end the class
+            output.println();
+            output.print("} // end class ");
+            output.println(outputClassName);
+
+            output.flush();
+            output.close();
+
+            System.out.println("wrote to file: " + file); // JAU
+        }
+
+        /** Get the name of the object through which API calls should be routed. */
+        protected String getDownstreamObjectName() {
+            return "downstream" + downstreamName;
+        }
+
+        /** Get the name of the object which shall be called as a prolog. */
+        protected String getPrologObjectNameOpt() {
+            if (null != prologNameOpt) {
+                return "prolog" + prologNameOpt;
+            }
+            return null;
+        }
+
+        protected void emitMethodDocComment(PrintWriter output, Method m) {
+        }
+
+        protected void emitSignature(PrintWriter output, Method m) {
+            output.print("  public ");
+            output.print(' ');
+            output.print(JavaType.createForClass(m.getReturnType()).getName());
+            output.print(' ');
+            output.print(m.getName());
+            output.print('(');
+            output.print(getArgListAsString(m, true, true));
+            output.println(")");
+        }
+
+        protected void emitBody(PrintWriter output, Method m, boolean runHooks) {
+            output.println("  {");
+            output.print("    ");
+            Class<?> retType = m.getReturnType();
+
+            boolean callPreDownstreamHook = runHooks && hasPreDownstreamCallHook(m);
+            boolean callPostDownstreamHook = runHooks && hasPostDownstreamCallHook(m);
+            boolean callDownstream = (null != getMethod(downstreamClass, m))
+                    && !(0 != (GEN_PROLOG_XOR_DOWNSTREAM & getMode()) && callPreDownstreamHook);
+            boolean hasResult = (retType != Void.TYPE);
+
+            if (!callDownstream) {
+                if (!emptyDownstreamAllowed()) {
+                    throw new RuntimeException("Method " + m + " has no downstream (" + downstreamName + ")");
+                }
+            }
+
+            if (!callPreDownstreamHook && !callPostDownstreamHook && !callDownstream) {
+                if (!emptyMethodAllowed()) {
+                    throw new RuntimeException("Method " + m + " is empty, no downstream (" + downstreamName + ") nor prolog (" + prologNameOpt + ").");
+                } else {
+                    output.print("    if(DEBUG) { System.out.println(\"WARNING: No prolog, no downstream, empty: \"+");
+                    printFunctionCallString(output, m);
+                    output.println("); } ");
+                }
+            }
+
+            if (callPreDownstreamHook) {
+                if (hasResult && !callDownstream) {
+                    if (callPostDownstreamHook) {
+                        output.print("    " + JavaType.createForClass(retType).getName());
+                        output.print(" _res = ");
+                    } else {
+                        output.print("    return ");
+                    }
+                }
+                preDownstreamCallHook(output, m);
+            }
+
+            if (callDownstream) {
+                if (hasResult) {
+                    if (callPostDownstreamHook) {
+                        output.print("    " + JavaType.createForClass(retType).getName());
+                        output.print(" _res = ");
+                    } else {
+                        output.print("    return ");
+                    }
+                }
+                output.print(getDownstreamObjectName());
+                output.print('.');
+                output.print(m.getName());
+                output.print('(');
+                output.print(getArgListAsString(m, false, true));
+                output.println(");");
+            }
+
+            if (callPostDownstreamHook) {
+                postDownstreamCallHook(output, m);
+            }
+
+            if (hasResult && callDownstream && callPostDownstreamHook) {
+                output.println("    return _res;");
+            }
+            output.println("  }");
+
+        }
+
+        protected String getArgListAsString(Method m, boolean includeArgTypes, boolean includeArgNames) {
+            StringBuilder buf = new StringBuilder(256);
+            if (!includeArgNames && !includeArgTypes) {
+                throw new IllegalArgumentException(
+                        "Cannot generate arglist without both arg types and arg names");
+            }
+
+            Class<?>[] argTypes = m.getParameterTypes();
+            for (int i = 0; i < argTypes.length; ++i) {
+                if (includeArgTypes) {
+                    buf.append(JavaType.createForClass(argTypes[i]).getName());
+                    buf.append(' ');
+                }
+
+                if (includeArgNames) {
+                    buf.append("arg");
+                    buf.append(i);
+                }
+                if (i < argTypes.length - 1) {
+                    buf.append(',');
+                }
+            }
+
+            return buf.toString();
+        }
+
+        /** The name of the class around which this pipeline is being
+         * composed. E.g., if this pipeline was constructed with
+         * "java.util.Set" as the baseInterfaceClassName, then this method will
+         * return "Set".
+         */
+        protected String getBaseInterfaceName() {
+            return baseName;
+        }
+
+        /** Get the output name for this pipeline class. */
+        protected abstract String getOutputName();
+
+        /**
+         * Called after the class headers have been generated, but before any
+         * method wrappers have been generated.
+         */
+        protected void preMethodEmissionHook(PrintWriter output) {
+            output.println("  public static final boolean DEBUG = com.jogamp.opengl.impl.Debug.debug(\"" + getOutputName() + "\");");
+        }
+
+        /**
+         * Emits the constructor for the pipeline; called after the preMethodEmissionHook.
+         */
+        protected abstract void constructorHook(PrintWriter output);
+
+        /**
+         * Called after the method wrappers have been generated, but before the
+         * closing parenthesis of the class is emitted.
+         */
+        protected void postMethodEmissionHook(PrintWriter output) {
+            output.println("  public String toString() {");
+            output.println("    StringBuffer sb = new StringBuffer();");
+            output.println("    sb.append(\"" + getOutputName() + " [ implementing " + baseInterfaceClass.getName() + ",\\n\\t\");");
+            if (null != prologClassOpt) {
+                output.println("    sb.append(\" prolog: \"+" + getPrologObjectNameOpt() + ".toString()+\",\\n\\t\");");
+            }
+            output.println("    sb.append(\" downstream: \"+" + getDownstreamObjectName() + ".toString()+\"\\n\\t]\");");
+            output.println("    return sb.toString();");
+            output.println("  }");
+        }
+
+        /**
+         * Called before the pipeline routes the call to the downstream object.
+         */
+        protected abstract void preDownstreamCallHook(PrintWriter output, Method m);
+
+        protected abstract boolean hasPreDownstreamCallHook(Method m);
+
+        /**
+         * Called after the pipeline has routed the call to the downstream object,
+         * but before the calling function exits or returns a value.
+         */
+        protected abstract void postDownstreamCallHook(PrintWriter output, Method m);
+
+        protected abstract boolean hasPostDownstreamCallHook(Method m);
+
+        protected abstract int getMode();
+
+        protected abstract boolean emptyMethodAllowed();
+
+        protected abstract boolean emptyDownstreamAllowed();
+
+        /** Emit a Javadoc comment for this pipeline class. */
+        protected abstract void emitClassDocComment(PrintWriter output);
+
+        /**
+         * Emits one of the isGL* methods.
+         */
+        protected void emitGLIsMethod(PrintWriter output, String type) {
+            output.println("  public boolean is" + type + "() {");
+            Class<?> clazz = BuildComposablePipeline.getClass("javax.media.opengl." + type);
+            if (clazz.isAssignableFrom(baseInterfaceClass)) {
+                output.println("    return true;");
+            } else {
+                output.println("    return false;");
+            }
+            output.println("  }");
+        }
+
+        /**
+         * Emits all of the isGL* methods.
+         */
+        protected void emitGLIsMethods(PrintWriter output) {
+            emitGLIsMethod(output, "GL");
+            emitGLIsMethod(output, "GL4bc");
+            emitGLIsMethod(output, "GL4");
+            emitGLIsMethod(output, "GL3bc");
+            emitGLIsMethod(output, "GL3");
+            emitGLIsMethod(output, "GL2");
+            emitGLIsMethod(output, "GLES1");
+            emitGLIsMethod(output, "GLES2");
+            emitGLIsMethod(output, "GL2ES1");
+            emitGLIsMethod(output, "GL2ES2");
+            emitGLIsMethod(output, "GL2GL3");
+            output.println("  public boolean isGLES() {");
+            output.println("    return isGLES2() || isGLES1();");
+            output.println("  }");
+        }
+
+        /**
+         * Emits one of the getGL* methods.
+         */
+        protected void emitGLGetMethod(PrintWriter output, String type) {
+            output.println("  public javax.media.opengl." + type + " get" + type + "() {");
+            Class<?> clazz = BuildComposablePipeline.getClass("javax.media.opengl." + type);
+            if (clazz.isAssignableFrom(baseInterfaceClass)) {
+                output.println("    return this;");
+            } else {
+                output.println("    throw new GLException(\"Not a " + type + " implementation\");");
+            }
+            output.println("  }");
+        }
+
+        /**
+         * Emits all of the getGL* methods.
+         */
+        protected void emitGLGetMethods(PrintWriter output) {
+            emitGLGetMethod(output, "GL");
+            emitGLGetMethod(output, "GL4bc");
+            emitGLGetMethod(output, "GL4");
+            emitGLGetMethod(output, "GL3bc");
+            emitGLGetMethod(output, "GL3");
+            emitGLGetMethod(output, "GL2");
+            emitGLGetMethod(output, "GLES1");
+            emitGLGetMethod(output, "GLES2");
+            emitGLGetMethod(output, "GL2ES1");
+            emitGLGetMethod(output, "GL2ES2");
+            emitGLGetMethod(output, "GL2GL3");
+            output.println("  public GLProfile getGLProfile() {");
+            output.println("    return " + getDownstreamObjectName() + ".getGLProfile();");
+            output.println("  }");
+        }
+    } // end class PipelineEmitter
+
+    //-------------------------------------------------------
+    protected class CustomPipeline extends PipelineEmitter {
+
+        String className;
+        int mode;
+
+        CustomPipeline(int mode, String outputDir, String outputPackage, String outputName, Class<?> baseInterfaceClass, Class<?> prologClassOpt, Class<?> downstreamClass) {
+            super(outputDir, outputPackage, baseInterfaceClass, prologClassOpt, downstreamClass);
+            className = outputName;
+            this.mode = mode;
+        }
+
+        protected String getOutputName() {
+            return className;
+        }
+
+        protected int getMode() {
+            return mode;
+        }
+
+        protected boolean emptyMethodAllowed() {
+            return true;
+        }
+
+        protected boolean emptyDownstreamAllowed() {
+            return true;
+        }
+
+        @Override
+        protected void preMethodEmissionHook(PrintWriter output) {
+            super.preMethodEmissionHook(output);
+        }
+
+        protected void constructorHook(PrintWriter output) {
+            output.print("  public " + getOutputName() + "(");
+            output.print(downstreamName + " " + getDownstreamObjectName());
+            if (null != prologNameOpt) {
+                output.println(", " + prologNameOpt + " " + getPrologObjectNameOpt() + ")");
+            } else {
+                output.println(")");
+            }
+            output.println("  {");
+            output.println("    if (" + getDownstreamObjectName() + " == null) {");
+            output.println("      throw new IllegalArgumentException(\"null " + getDownstreamObjectName() + "\");");
+            output.println("    }");
+            output.print("    this." + getDownstreamObjectName());
+            output.println(" = " + getDownstreamObjectName() + ";");
+            if (null != prologNameOpt) {
+                output.print("    this." + getPrologObjectNameOpt());
+                output.println(" = " + getPrologObjectNameOpt() + ";");
+            }
+            output.println("  }");
+            output.println();
+        }
+
+        @Override
+        protected void postMethodEmissionHook(PrintWriter output) {
+            super.postMethodEmissionHook(output);
+            if (null != prologNameOpt) {
+                output.print("  private " + prologNameOpt + " " + getPrologObjectNameOpt() + ";");
+            }
+        }
+
+        protected void emitClassDocComment(PrintWriter output) {
+            output.println("/**");
+            output.println(" * Composable pipeline {@link " + outputPackage + "." + outputName + "}, implementing the interface");
+            output.println(" * {@link " + baseInterfaceClass.getName() + "}");
+            output.println(" * <p>");
+            output.println(" * Each method follows the call graph <ul>");
+            if (null != prologClassOpt) {
+                output.println(" *   <li> call <em>prolog</em> {@link " + prologClassOpt.getName() + "} if available");
+            }
+            output.println(" *   <li> call <em>downstream</em> {@link " + downstreamClass.getName() + "} if available");
+            if (null != prologClassOpt && 0 != (GEN_PROLOG_XOR_DOWNSTREAM & getMode())) {
+                output.println(" *        <strong>and</strong> if no call to {@link " + prologClassOpt.getName() + "} is made");
+            }
+            output.println(" * </ul><p>");
+            output.println(" * ");
+            output.println(" * <ul>");
+            output.println(" *   <li> <em>Interface</em> {@link " + baseInterfaceClass.getName() + "}");
+            if (null != prologClassOpt) {
+                output.println(" *   <li> <em>Prolog</em> {@link " + prologClassOpt.getName() + "}");
+            }
+            output.println(" *   <li> <em>Downstream</em> {@link " + downstreamClass.getName() + "}");
+            output.println(" * </ul><p>");
+            output.println(" *  Sample code which installs this pipeline: </P>");
+            output.println(" * ");
+            output.println("<PRE>");
+            if (null != prologNameOpt) {
+                output.println("     GL gl = drawable.setGL( new " + className + "( drawable.getGL().getGL2ES2(), new " + prologNameOpt + "( drawable.getGL().getGL2ES2() ) ) );");
+            } else {
+                output.println("     GL gl = drawable.setGL( new " + className + "( drawable.getGL().getGL2ES2() ) );");
+            }
+            output.println("</PRE>");
+            output.println("*/");
+        }
+
+        protected boolean hasPreDownstreamCallHook(Method m) {
+            return null != getMethod(prologClassOpt, m);
+        }
+
+        protected void preDownstreamCallHook(PrintWriter output, Method m) {
+            if (null != prologNameOpt) {
+                output.print(getPrologObjectNameOpt());
+                output.print('.');
+                output.print(m.getName());
+                output.print('(');
+                output.print(getArgListAsString(m, false, true));
+                output.println(");");
+            }
+        }
+
+        protected boolean hasPostDownstreamCallHook(Method m) {
+            return false;
+        }
+
+        protected void postDownstreamCallHook(PrintWriter output, Method m) {
+        }
+    } // end class CustomPipeline
+
+    protected class DebugPipeline extends PipelineEmitter {
+
+        String className;
+
+        DebugPipeline(String outputDir, String outputPackage, Class<?> baseInterfaceClass, Class<?> downstreamClass) {
+            super(outputDir, outputPackage, baseInterfaceClass, null, downstreamClass);
+            className = "Debug" + getBaseInterfaceName();
+        }
+
+        protected String getOutputName() {
+            return className;
+        }
+
+        protected int getMode() {
+            return 0;
+        }
+
+        protected boolean emptyMethodAllowed() {
+            return false;
+        }
+
+        protected boolean emptyDownstreamAllowed() {
+            return false;
+        }
+
+        @Override
+        protected void preMethodEmissionHook(PrintWriter output) {
+            super.preMethodEmissionHook(output);
+        }
+
+        protected void constructorHook(PrintWriter output) {
+            output.print("  public " + getOutputName() + "(");
+            output.println(downstreamName + " " + getDownstreamObjectName() + ")");
+            output.println("  {");
+            output.println("    if (" + getDownstreamObjectName() + " == null) {");
+            output.println("      throw new IllegalArgumentException(\"null " + getDownstreamObjectName() + "\");");
+            output.println("    }");
+            output.print("    this." + getDownstreamObjectName());
+            output.println(" = " + getDownstreamObjectName() + ";");
+            if (null != prologNameOpt) {
+                output.print("    this." + getPrologObjectNameOpt());
+                output.println(" = " + getPrologObjectNameOpt() + ";");
+            }
+            output.println("    // Fetch GLContext object for better error checking (if possible)");
+            output.println("    _context = " + getDownstreamObjectName() + ".getContext();");
+            output.println("  }");
+            output.println();
+        }
+
+        @Override
+        protected void postMethodEmissionHook(PrintWriter output) {
+            super.postMethodEmissionHook(output);
+            output.println("  private void checkGLGetError(String caller)");
+            output.println("  {");
+            if (hasImmediateMode) {
+                output.println("    if (insideBeginEndPair) {");
+                output.println("      return;");
+                output.println("    }");
+                output.println();
+            }
+            output.println("    // Debug code to make sure the pipeline is working; leave commented out unless testing this class");
+            output.println("    //System.err.println(\"Checking for GL errors "
+                    + "after call to \" + caller);");
+            output.println();
+            output.println("    int err = "
+                    + getDownstreamObjectName()
+                    + ".glGetError();");
+            output.println("    if (err == GL_NO_ERROR) { return; }");
+            output.println();
+            output.println("    StringBuffer buf = new StringBuffer(Thread.currentThread()+");
+            output.println("      \" glGetError() returned the following error codes after a call to \" + caller + \": \");");
+            output.println();
+            output.println("    // Loop repeatedly to allow for distributed GL implementations,");
+            output.println("    // as detailed in the glGetError() specification");
+            output.println("    int recursionDepth = 10;");
+            output.println("    do {");
+            output.println("      switch (err) {");
+            output.println("        case GL_INVALID_ENUM: buf.append(\"GL_INVALID_ENUM \"); break;");
+            output.println("        case GL_INVALID_VALUE: buf.append(\"GL_INVALID_VALUE \"); break;");
+            output.println("        case GL_INVALID_OPERATION: buf.append(\"GL_INVALID_OPERATION \"); break;");
+            if (hasStackOverflow) {
+                output.println("        case GL_STACK_OVERFLOW: buf.append(\"GL_STACK_OVERFLOW \"); break;");
+                output.println("        case GL_STACK_UNDERFLOW: buf.append(\"GL_STACK_UNDERFLOW \"); break;");
+            }
+            output.println("        case GL_OUT_OF_MEMORY: buf.append(\"GL_OUT_OF_MEMORY \"); break;");
+            output.println("        case GL_NO_ERROR: throw new InternalError(\"Should not be treating GL_NO_ERROR as error\");");
+            output.println("        default: buf.append(\"Unknown glGetError() return value: \");");
+            output.println("      }");
+            output.println("      buf.append(\"( \" + err + \" 0x\"+Integer.toHexString(err).toUpperCase() + \"), \");");
+            output.println("    } while ((--recursionDepth >= 0) && (err = "
+                    + getDownstreamObjectName()
+                    + ".glGetError()) != GL_NO_ERROR);");
+            output.println("    throw new GLException(buf.toString());");
+            output.println("  }");
+            if (hasImmediateMode) {
+                output.println("  /** True if the pipeline is inside a glBegin/glEnd pair.*/");
+                output.println("  private boolean insideBeginEndPair = false;");
+                output.println();
+            }
+            output.println("  private void checkContext() {");
+            output.println("    GLContext currentContext = GLContext.getCurrent();");
+            output.println("    if (currentContext == null) {");
+            output.println("      throw new GLException(\"No OpenGL context is current on this thread\");");
+            output.println("    }");
+            output.println("    if ((_context != null) && (_context != currentContext)) {");
+            output.println("      throw new GLException(\"This GL object is being incorrectly used with a different GLContext than that which created it\");");
+            output.println("    }");
+            output.println("  }");
+            output.println("  private GLContext _context;");
+        }
+
+        protected void emitClassDocComment(PrintWriter output) {
+            output.println("/** <P> Composable pipeline which wraps an underlying {@link GL} implementation,");
+            output.println("    providing error checking after each OpenGL method call. If an error occurs,");
+            output.println("    causes a {@link GLException} to be thrown at exactly the point of failure.");
+            output.println("    Sample code which installs this pipeline: </P>");
+            output.println();
+            output.println("<PRE>");
+            output.println("     GL gl = drawable.setGL(new DebugGL(drawable.getGL()));");
+            output.println("</PRE>");
+            output.println("*/");
+        }
+
+        protected boolean hasPreDownstreamCallHook(Method m) {
+            return true;
+        }
+
+        protected void preDownstreamCallHook(PrintWriter output, Method m) {
+            output.println("    checkContext();");
+        }
+
+        protected boolean hasPostDownstreamCallHook(Method m) {
+            return true;
+        }
+
+        protected void postDownstreamCallHook(PrintWriter output, Method m) {
+            if (m.getName().equals("glBegin")) {
+                output.println("    insideBeginEndPair = true;");
+                output.println("    // NOTE: can't check glGetError(); it's not allowed inside glBegin/glEnd pair");
+            } else {
+                if (m.getName().equals("glEnd")) {
+                    output.println("    insideBeginEndPair = false;");
+                }
+
+                output.println("    String txt = new String(\"" + m.getName() + "(\" +");
+                Class<?>[] params = m.getParameterTypes();
+                for (int i = 0; params != null && i < params.length; i++) {
+                    if (params[i].equals(int.class)) {
+                        output.println("    \"<" + params[i].getName() + "> 0x\"+Integer.toHexString(arg" + i + ").toUpperCase() +");
+                    } else {
+                        output.println("    \"<" + params[i].getName() + ">\" +");
+                    }
+                    if (i < params.length - 1) {
+                        output.println("    \", \" +");
+                    }
+                }
+                output.println("    \")\");");
+                // calls to glGetError() are only allowed outside of glBegin/glEnd pairs
+                output.println("    checkGLGetError( txt );");
+            }
+        }
+    } // end class DebugPipeline
+
+    //-------------------------------------------------------
+    protected class TracePipeline extends PipelineEmitter {
+
+        String className;
+
+        TracePipeline(String outputDir, String outputPackage, Class<?> baseInterfaceClass, Class<?> downstreamClass) {
+            super(outputDir, outputPackage, baseInterfaceClass, null, downstreamClass);
+            className = "Trace" + getBaseInterfaceName();
+        }
+
+        protected String getOutputName() {
+            return className;
+        }
+
+        protected int getMode() {
+            return 0;
+        }
+
+        protected boolean emptyMethodAllowed() {
+            return false;
+        }
+
+        protected boolean emptyDownstreamAllowed() {
+            return false;
+        }
+
+        @Override
+        protected void preMethodEmissionHook(PrintWriter output) {
+            super.preMethodEmissionHook(output);
+        }
+
+        protected void constructorHook(PrintWriter output) {
+            output.print("  public " + getOutputName() + "(");
+            output.println(downstreamName + " " + getDownstreamObjectName() + ", PrintStream " + getOutputStreamName() + ")");
+            output.println("  {");
+            output.println("    if (" + getDownstreamObjectName() + " == null) {");
+            output.println("      throw new IllegalArgumentException(\"null " + getDownstreamObjectName() + "\");");
+            output.println("    }");
+            output.print("    this." + getDownstreamObjectName());
+            output.println(" = " + getDownstreamObjectName() + ";");
+            output.print("    this." + getOutputStreamName());
+            output.println(" = " + getOutputStreamName() + ";");
+            output.println("  }");
+            output.println();
+        }
+
+        @Override
+        protected void postMethodEmissionHook(PrintWriter output) {
+            super.postMethodEmissionHook(output);
+            output.println("private PrintStream " + getOutputStreamName() + ";");
+            output.println("private int indent = 0;");
+            output.println("protected String dumpArray(Object obj)");
+            output.println("{");
+            output.println("  if (obj == null) return \"[null]\";");
+            output.println("  StringBuffer sb = new StringBuffer(\"[\");");
+            output.println("  int len  = java.lang.reflect.Array.getLength(obj);");
+            output.println("  int count = Math.min(len,16);");
+            output.println("  for ( int i =0; i < count; i++ ) {");
+            output.println("    sb.append(java.lang.reflect.Array.get(obj,i));");
+            output.println("    if (i < count-1)");
+            output.println("      sb.append(',');");
+            output.println("  }");
+            output.println("  if ( len > 16 )");
+            output.println("    sb.append(\"...\").append(len);");
+            output.println("  sb.append(']');");
+            output.println("  return sb.toString();");
+            output.println("}");
+            output.println("protected void print(String str)");
+            output.println("{");
+            output.println("  " + getOutputStreamName() + ".print(str);");
+            output.println("}");
+            output.println("protected void println(String str)");
+            output.println("{");
+            output.println("  " + getOutputStreamName() + ".println(str);");
+            output.println("}");
+            output.println("protected void printIndent()");
+            output.println("{");
+            output.println("  for( int i =0; i < indent; i++) {" + getOutputStreamName() + ".print(' ');}");
+            output.println("}");
+        }
+
+        protected void emitClassDocComment(PrintWriter output) {
+            output.println("/** <P> Composable pipeline which wraps an underlying {@link GL} implementation,");
+            output.println("    providing tracing information to a user-specified {@link java.io.PrintStream}");
+            output.println("    before and after each OpenGL method call. Sample code which installs this pipeline: </P>");
+            output.println();
+            output.println("<PRE>");
+            output.println("     GL gl = drawable.setGL(new TraceGL(drawable.getGL(), System.err));");
+            output.println("</PRE>");
+            output.println("*/");
+        }
+
+        protected boolean hasPreDownstreamCallHook(Method m) {
+            return true;
+        }
+
+        protected void preDownstreamCallHook(PrintWriter output, Method m) {
+            if (m.getName().equals("glEnd") || m.getName().equals("glEndList")) {
+                output.println("indent-=2;");
+                output.println("    printIndent();");
+            } else {
+                output.println("printIndent();");
+            }
+
+            output.print("    print(");
+            printFunctionCallString(output, m);
+            output.println(");");
+        }
+
+        protected boolean hasPostDownstreamCallHook(Method m) {
+            return true;
+        }
+
+        protected void postDownstreamCallHook(PrintWriter output, Method m) {
+            Class<?> ret = m.getReturnType();
+            if (ret != Void.TYPE) {
+                output.println("    println(\" = \"+_res);");
+            } else {
+                output.println("    println(\"\");");
+            }
+        }
+
+        private String getOutputStreamName() {
+            return "stream";
+        }
+    } // end class TracePipeline
+
+    public static final void printFunctionCallString(PrintWriter output, Method m) {
+        Class<?>[] params = m.getParameterTypes();
+        output.print("    \"" + m.getName() + "(\"");
+        for (int i = 0; i < params.length; i++) {
+            if (params[i].isArray()) {
+                output.print("+\"<" + params[i].getName() + ">\"");
+            } else if (params[i].equals(int.class)) {
+                output.print("+\"<" + params[i].getName() + "> 0x\"+Integer.toHexString(arg" + i + ").toUpperCase()");
+            } else {
+                output.print("+\"<" + params[i].getName() + "> \"+arg" + i);
+            }
+            if (i < params.length - 1) {
+                output.print("+\", \"");
+            }
+        }
+        output.print("+\")\"");
+    }
+}
diff --git a/src/java/com/sun/gluegen/opengl/BuildStaticGLInfo.java b/src/java/com/sun/gluegen/opengl/BuildStaticGLInfo.java
new file mode 100644
index 000000000..2be5519fe
--- /dev/null
+++ b/src/java/com/sun/gluegen/opengl/BuildStaticGLInfo.java
@@ -0,0 +1,346 @@
+/*
+ * 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.gluegen.opengl;
+
+import java.io.*;
+import java.util.*;
+import java.util.regex.*;
+
+  /**
+   * Builds the StaticGLInfo class from the OpenGL header files (i.e., gl.h
+   * and glext.h) whose paths were passed as arguments to {@link
+   * #main(String[])}.
+   *
+   * It relies upon the assumption that a function's membership is scoped by
+   * preprocessor blocks in the header files that match the following pattern:
+   * <br>
+   *
+   * <pre>
+   * 
+   * #ifndef GL_XXXX
+   * GLAPI <returnType> <APIENTRY|GLAPIENTRY> glFuncName(<params>)
+   * #endif GL_XXXX
+   *
+   * </pre>
+   *
+   * For example, if it parses the following data:
+   *
+   * <pre>
+   * 
+   * #ifndef GL_VERSION_1_3
+   * GLAPI void APIENTRY glActiveTexture (GLenum);
+   * GLAPI void APIENTRY glMultiTexCoord1dv (GLenum, const GLdouble *);
+   * GLAPI void  <APIENTRY|GLAPIENTRY> glFuncName(<params>)
+   * #endif GL_VERSION_1_3
+   *
+   * #ifndef GL_ARB_texture_compression
+   * GLAPI void APIENTRY glCompressedTexImage3DARB (GLenum, GLint, GLenum, GLsizei, GLsizei, GLsizei, GLint, GLsizei, const GLvoid *);
+   * GLAPI void APIENTRY glCompressedTexImage2DARB (GLenum, GLint, GLenum, GLsizei, GLsizei, GLint, GLsizei, const GLvoid *);
+   * #endif
+   * 
+   * </pre>
+   *
+   * It will associate
+   *   <code> glActiveTexture </code> and
+   *   <code> glMultiTexCoord1dv </code>
+   * with the symbol
+   *   <code> GL_VERSION_1_3 </code>,
+   * and associate
+   *   <code> glCompressedTexImage2DARB </code> and
+   *   <code> glCompressedTexImage3DARB </code>
+   * with the symbol
+   *   <code> GL_ARB_texture_compression </code>.
+   * */
+public class BuildStaticGLInfo {
+
+  // Handles function pointer 
+  protected static int funcIdentifierGroup = 10;
+  protected static Pattern funcPattern =
+    Pattern.compile("^(GLAPI|GL_API|GL_APICALL|EGLAPI|extern)?(\\s*)((unsigned|const)\\s+)?(\\w+)(\\s*\\*)?(\\s+)(GLAPIENTRY|GL_APIENTRY|APIENTRY|EGLAPIENTRY|WINAPI)?(\\s*)([ew]?gl\\w+)\\s?(\\(.*)");
+
+  protected static Pattern associationPattern =
+    Pattern.compile("\\#ifndef ([CEW]?GL[XU]?_[A-Za-z0-9_]+)(.*)");
+
+  protected static int defineIdentifierGroup = 1;
+  protected static Pattern definePattern =
+    Pattern.compile("\\#define ([CEW]?GL[XU]?_[A-Za-z0-9_]+)\\s*([A-Za-z0-9_]+)(.*)");
+
+  // Maps function / #define names to the names of the extensions they're declared in
+  protected Map<String, String> declarationToExtensionMap = new HashMap<String, String>();
+
+  // Maps extension names to Set of identifiers (both #defines and
+  // function names) this extension declares
+  protected Map<String, Set<String>> extensionToDeclarationMap = new HashMap<String, Set<String>>();
+  protected boolean debug = false;
+
+    /**
+     * The first argument is the package to which the StaticGLInfo class
+     * belongs, the second is the path to the directory in which that package's
+     * classes reside, and the remaining arguments are paths to the C header
+     * files that should be parsed
+     */
+    public static void main(String[] args) throws IOException {
+        if (args.length > 0 && args[0].equals("-test")) {
+            BuildStaticGLInfo builder = new BuildStaticGLInfo();
+            builder.setDebug(true);
+            String[] newArgs = new String[args.length - 1];
+            System.arraycopy(args, 1, newArgs, 0, args.length - 1);
+            builder.parse(newArgs);
+            builder.dump();
+            System.exit(0);
+        }
+
+        String packageName = args[0];
+        String packageDir = args[1];
+
+        String[] cHeaderFilePaths = new String[args.length - 2];
+        System.arraycopy(args, 2, cHeaderFilePaths, 0, cHeaderFilePaths.length);
+
+        BuildStaticGLInfo builder = new BuildStaticGLInfo();
+        try {
+            builder.parse(cHeaderFilePaths);
+
+            File file = new File(packageDir + File.separatorChar + "StaticGLInfo.java");
+            String parentDir = file.getParent();
+            if (parentDir != null) {
+                File pDirFile = new File(parentDir);
+                pDirFile.mkdirs();
+            }
+
+            PrintWriter writer = new PrintWriter(new BufferedWriter(new FileWriter(file)));
+            builder.emitJavaCode(writer, packageName);
+
+            writer.flush();
+            writer.close();
+        } catch (Exception e) {
+            StringBuilder buf = new StringBuilder("{ ");
+            for (int i = 0; i < cHeaderFilePaths.length; ++i) {
+                buf.append(cHeaderFilePaths[i]);
+                buf.append(" ");
+            }
+            buf.append('}');
+            throw new RuntimeException(
+                    "Error building StaticGLInfo.java from " + buf.toString(), e);
+        }
+    }
+
+    public void setDebug(boolean v) {
+        debug = v;
+    }
+
+    /** Parses the supplied C header files and adds the function
+    associations contained therein to the internal map. */
+    public void parse(String[] cHeaderFilePaths) throws IOException {
+        for (int i = 0; i < cHeaderFilePaths.length; i++) {
+            parse(cHeaderFilePaths[i]);
+        }
+    }
+
+    /** Parses the supplied C header file and adds the function
+    associations contained therein to the internal map. */
+    public void parse(String cHeaderFilePath) throws IOException {
+        BufferedReader reader = new BufferedReader(new FileReader(cHeaderFilePath));
+        String line, activeAssociation = null;
+        Matcher m = null;
+        while ((line = reader.readLine()) != null) {
+            int type = 0; // 1-define, 2-function
+            // see if we're inside a #ifndef GL_XXX block and matching a function
+            if (activeAssociation != null) {
+                String identifier = null;
+                if ((m = funcPattern.matcher(line)).matches()) {
+                    identifier = m.group(funcIdentifierGroup).trim();
+                    type = 2;
+                } else if ((m = definePattern.matcher(line)).matches()) {
+                    identifier = m.group(defineIdentifierGroup).trim();
+                    type = 1;
+                } else if (line.startsWith("#endif")) {
+                    if (debug) {
+                        System.err.println("END ASSOCIATION BLOCK: <" + activeAssociation + ">");
+                    }
+                    activeAssociation = null;
+                }
+                if ((identifier != null)
+                        && (activeAssociation != null)
+                        && // Handles #ifndef GL_... #define GL_...
+                        !identifier.equals(activeAssociation)) {
+                    addAssociation(identifier, activeAssociation);
+                    if (debug) {
+                        System.err.println("  ADDING ASSOCIATION: <" + identifier + "> <" + activeAssociation + "> ; type " + type);
+                    }
+                }
+            } else if ((m = associationPattern.matcher(line)).matches()) {
+                // found a new #ifndef GL_XXX block
+                activeAssociation = m.group(1).trim();
+
+                if (debug) {
+                    System.err.println("BEGIN ASSOCIATION BLOCK: <" + activeAssociation + ">");
+                }
+            }
+        }
+        reader.close();
+    }
+
+    public void dump() {
+        for (String name : extensionToDeclarationMap.keySet()) {
+            Set<String> decls = extensionToDeclarationMap.get(name);
+            System.out.println("<" + name + "> :");
+            List<String> l = new ArrayList<String>();
+            l.addAll(decls);
+            Collections.sort(l);
+            for (String str : l) {
+                System.out.println("  <" + str + ">");
+            }
+        }
+    }
+
+    public String getExtension(String identifier) {
+        return declarationToExtensionMap.get(identifier);
+    }
+
+    public Set<String> getDeclarations(String extension) {
+        return extensionToDeclarationMap.get(extension);
+    }
+
+    public Set<String> getExtensions() {
+        return extensionToDeclarationMap.keySet();
+    }
+
+    public void emitJavaCode(PrintWriter output, String packageName) {
+        output.println("package " + packageName + ";");
+        output.println();
+        output.println("import java.util.*;");
+        output.println();
+        output.println("public final class StaticGLInfo");
+        output.println("{");
+
+        output.println("  // maps function names to the extension string or OpenGL");
+        output.println("  // specification version string to which they correspond.");
+        output.println("  private static HashMap funcToAssocMap;");
+        output.println();
+
+        output.println("  /**");
+        output.println("   * Returns the OpenGL extension string or GL_VERSION string with which the");
+        output.println("   * given function is associated. <P>");
+        output.println("   *");
+        output.println("   * If the");
+        output.println("   * function is part of the OpenGL core, the returned value will be");
+        output.println("   * GL_VERSION_XXX where XXX represents the OpenGL version of which the");
+        output.println("   * function is a member (XXX will be of the form \"A\" or \"A_B\" or \"A_B_C\";");
+        output.println("   * e.g., GL_VERSION_1_2_1 for OpenGL version 1.2.1).");
+        output.println("   *");
+        output.println("   * If the function is an extension function, the returned value will the");
+        output.println("   * OpenGL extension string for the extension to which the function");
+        output.println("   * corresponds. For example, if glLoadTransposeMatrixfARB is the argument,");
+        output.println("   * GL_ARB_transpose_matrix will be the value returned.");
+        output.println("   * Please see http://oss.sgi.com/projects/ogl-sample/registry/index.html for");
+        output.println("   * a list of extension names and the functions they expose.");
+        output.println("   *");
+        output.println("   * If the function specified is not part of any known OpenGL core version or");
+        output.println("   * extension, then NULL will be returned.");
+        output.println("   */");
+        output.println("  public static String getFunctionAssociation(String glFunctionName)");
+        output.println("  {");
+        output.println("    String mappedName = null;");
+        output.println("    int  funcNamePermNum = com.jogamp.gluegen.runtime.opengl.GLExtensionNames.getFuncNamePermutationNumber(glFunctionName);");
+        output.println("    for(int i = 0; null==mappedName && i < funcNamePermNum; i++) {");
+        output.println("        String tmp = com.jogamp.gluegen.runtime.opengl.GLExtensionNames.getFuncNamePermutation(glFunctionName, i);");
+        output.println("        try {");
+        output.println("          mappedName = (String)funcToAssocMap.get(tmp);");
+        output.println("        } catch (Exception e) { }");
+        output.println("    }");
+        output.println("    return mappedName;");
+        output.println("  }");
+        output.println();
+
+        output.println("  static");
+        output.println("  {");
+
+        // Compute max capacity
+        int maxCapacity = 0;
+        for (String name : declarationToExtensionMap.keySet()) {
+            if (!name.startsWith("GL")) {
+                ++maxCapacity;
+            }
+        }
+
+        output.println("    funcToAssocMap = new HashMap(" + maxCapacity + "); // approximate max capacity");
+        output.println("    String group;");
+        ArrayList<String> sets = new ArrayList<String>(extensionToDeclarationMap.keySet());
+        Collections.sort(sets);
+        for (String groupName : sets) {
+            Set<String> funcs = extensionToDeclarationMap.get(groupName);
+            List<String> l = new ArrayList<String>();
+            l.addAll(funcs);
+            Collections.sort(l);
+            Iterator<String> funcIter = l.iterator();
+            boolean printedHeader = false;
+            while (funcIter.hasNext()) {
+                String funcName = funcIter.next();
+                if (!funcName.startsWith("GL")) {
+                    if (!printedHeader) {
+                        output.println();
+                        output.println("    //----------------------------------------------------------------");
+                        output.println("    //                 " + groupName);
+                        output.println("    //----------------------------------------------------------------");
+                        output.println("    group = \"" + groupName + "\";");
+                        printedHeader = true;
+                    }
+
+                    output.println("    funcToAssocMap.put(\"" + funcName + "\", group);");
+                }
+            }
+        }
+        output.println("  }");
+        output.println("} // end class StaticGLInfo");
+    }
+
+    //----------------------------------------------------------------------
+    // Internals only below this point
+    //
+    protected void addAssociation(String identifier, String association) {
+        declarationToExtensionMap.put(identifier, association);
+        Set<String> identifiers = extensionToDeclarationMap.get(association);
+        if (identifiers == null) {
+            identifiers = new HashSet<String>();
+            extensionToDeclarationMap.put(association, identifiers);
+        }
+        identifiers.add(identifier);
+    }
+}
diff --git a/src/java/com/sun/gluegen/opengl/GLConfiguration.java b/src/java/com/sun/gluegen/opengl/GLConfiguration.java
new file mode 100755
index 000000000..d712e902d
--- /dev/null
+++ b/src/java/com/sun/gluegen/opengl/GLConfiguration.java
@@ -0,0 +1,296 @@
+/*
+ * 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.
+ * 
+ * Sun gratefully acknowledges that this software was originally authored
+ * and developed by Kenneth Bradley Russell and Christopher John Kline.
+ */
+package com.sun.gluegen.opengl;
+
+import java.io.*;
+import java.util.*;
+
+import com.sun.gluegen.*;
+import com.sun.gluegen.procaddress.*;
+import com.jogamp.gluegen.runtime.opengl.GLExtensionNames;
+
+public class GLConfiguration extends ProcAddressConfiguration {
+
+    // The following data members support ignoring an entire extension at a time
+    private List<String> glHeaders = new ArrayList<String>();
+    private Set<String> ignoredExtensions = new HashSet<String>();
+    private Set<String> extensionsRenamedIntoCore = new HashSet<String>();
+    private BuildStaticGLInfo glInfo;
+
+    // Maps function names to the kind of buffer object it deals with
+    private Map<String, GLEmitter.BufferObjectKind> bufferObjectKinds = new HashMap<String, GLEmitter.BufferObjectKind>();
+    private GLEmitter emitter;
+    private Set<String> dropUniqVendorExtensions = new HashSet<String>();
+
+    // This directive is off by default but can help automatically
+    // indicate which extensions have been folded into the core OpenGL
+    // namespace, and if not, then why not
+    private boolean autoUnifyExtensions = false;
+    private boolean allowNonGLExtensions = false;
+
+    public GLConfiguration(GLEmitter emitter) {
+        super();
+        this.emitter = emitter;
+        try {
+            setProcAddressNameExpr("PFN $UPPERCASE({0}) PROC");
+        } catch (NoSuchElementException e) {
+            throw new RuntimeException("Error configuring ProcAddressNameExpr", e);
+        }
+    }
+
+    @Override
+    protected void dispatch(String cmd, StringTokenizer tok, File file, String filename, int lineNo) throws IOException {
+        if (cmd.equalsIgnoreCase("IgnoreExtension")) {
+            String sym = readString("IgnoreExtension", tok, filename, lineNo);
+            ignoredExtensions.add(sym);
+        } else if (cmd.equalsIgnoreCase("RenameExtensionIntoCore")) {
+            String sym = readString("RenameExtensionIntoCore", tok, filename, lineNo);
+            extensionsRenamedIntoCore.add(sym);
+        } else if (cmd.equalsIgnoreCase("AllowNonGLExtensions")) {
+            allowNonGLExtensions = readBoolean("AllowNonGLExtensions", tok, filename, lineNo).booleanValue();
+        } else if (cmd.equalsIgnoreCase("AutoUnifyExtensions")) {
+            autoUnifyExtensions = readBoolean("AutoUnifyExtensions", tok, filename, lineNo).booleanValue();
+        } else if (cmd.equalsIgnoreCase("GLHeader")) {
+            String sym = readString("GLHeader", tok, filename, lineNo);
+            glHeaders.add(sym);
+        } else if (cmd.equalsIgnoreCase("BufferObjectKind")) {
+            readBufferObjectKind(tok, filename, lineNo);
+        } else if (cmd.equalsIgnoreCase("DropUniqVendorExtensions")) {
+            String sym = readString("DropUniqVendorExtensions", tok, filename, lineNo);
+            dropUniqVendorExtensions.add(sym);
+        } else {
+            super.dispatch(cmd, tok, file, filename, lineNo);
+        }
+    }
+
+    protected void readBufferObjectKind(StringTokenizer tok, String filename, int lineNo) {
+        try {
+            String kindString = tok.nextToken();
+            GLEmitter.BufferObjectKind kind = null;
+            String target = tok.nextToken();
+            if (kindString.equalsIgnoreCase("UnpackPixel")) {
+                kind = GLEmitter.BufferObjectKind.UNPACK_PIXEL;
+            } else if (kindString.equalsIgnoreCase("PackPixel")) {
+                kind = GLEmitter.BufferObjectKind.PACK_PIXEL;
+            } else if (kindString.equalsIgnoreCase("Array")) {
+                kind = GLEmitter.BufferObjectKind.ARRAY;
+            } else if (kindString.equalsIgnoreCase("Element")) {
+                kind = GLEmitter.BufferObjectKind.ELEMENT;
+            } else {
+                throw new RuntimeException("Error parsing \"BufferObjectKind\" command at line " + lineNo
+                        + " in file \"" + filename + "\": illegal BufferObjectKind \""
+                        + kindString + "\", expected one of UnpackPixel, PackPixel, Array, or Element");
+            }
+
+            bufferObjectKinds.put(target, kind);
+        } catch (NoSuchElementException e) {
+            throw new RuntimeException("Error parsing \"BufferObjectKind\" command at line " + lineNo
+                    + " in file \"" + filename + "\"", e);
+        }
+    }
+
+    /** Overrides javaPrologueForMethod in superclass and
+    automatically generates prologue code for functions associated
+    with buffer objects. */
+    @Override
+    public List<String> javaPrologueForMethod(MethodBinding binding, boolean forImplementingMethodCall, boolean eraseBufferAndArrayTypes) {
+
+        List<String> res = super.javaPrologueForMethod(binding, forImplementingMethodCall, eraseBufferAndArrayTypes);
+        GLEmitter.BufferObjectKind kind = getBufferObjectKind(binding.getName());
+        if (kind != null) {
+            // Need to generate appropriate prologue based on both buffer
+            // object kind and whether this variant of the MethodBinding
+            // is the one accepting a "long" as argument
+            //
+            // NOTE we MUST NOT mutate the array returned from the super
+            // call!
+            ArrayList<String> res2 = new ArrayList<String>();
+            if (res != null) {
+                res2.addAll(res);
+            }
+            res = res2;
+
+            String prologue = "check";
+
+            if (kind == GLEmitter.BufferObjectKind.UNPACK_PIXEL) {
+                prologue = prologue + "UnpackPBO";
+            } else if (kind == GLEmitter.BufferObjectKind.PACK_PIXEL) {
+                prologue = prologue + "PackPBO";
+            } else if (kind == GLEmitter.BufferObjectKind.ARRAY) {
+                prologue = prologue + "ArrayVBO";
+            } else if (kind == GLEmitter.BufferObjectKind.ELEMENT) {
+                prologue = prologue + "ElementVBO";
+            } else {
+                throw new RuntimeException("Unknown BufferObjectKind " + kind);
+            }
+
+            if (emitter.isBufferObjectMethodBinding(binding)) {
+                prologue = prologue + "Enabled";
+            } else {
+                prologue = prologue + "Disabled";
+            }
+
+            prologue = prologue + "(true);";
+
+            res.add(0, prologue);
+
+            // Must also filter out bogus rangeCheck directives for VBO/PBO
+            // variants
+            if (emitter.isBufferObjectMethodBinding(binding)) {
+                for (Iterator<String> iter = res.iterator(); iter.hasNext();) {
+                    String line = iter.next();
+                    if (line.indexOf("Buffers.rangeCheck") >= 0) {
+                        iter.remove();
+                    }
+                }
+            }
+        }
+
+        return res;
+    }
+
+    @Override
+    public void dumpIgnores() {
+        System.err.println("GL Ignored extensions: ");
+        for (String str : ignoredExtensions) {
+            System.err.println("\t" + str);
+        }
+        super.dumpIgnores();
+    }
+
+    protected boolean shouldIgnoreExtension(String symbol, boolean criteria) {
+        if (criteria && glInfo != null) {
+            String extension = glInfo.getExtension(symbol);
+            if (extension != null
+                    && ignoredExtensions.contains(extension)) {
+                return true;
+            }
+            boolean isGLEnum = GLExtensionNames.isGLEnumeration(symbol);
+            boolean isGLFunc = GLExtensionNames.isGLFunction(symbol);
+            if (isGLFunc || isGLEnum) {
+                if (GLExtensionNames.isExtensionVEN(symbol, isGLFunc)) {
+                    String extSuffix = GLExtensionNames.getExtensionSuffix(symbol, isGLFunc);
+                    if (getDropUniqVendorExtensions(extSuffix)) {
+                        if (DEBUG_IGNORES) {
+                            System.err.println("Ignore UniqVendorEXT: " + symbol + ", vendor " + extSuffix);
+                        }
+                        return true;
+                    }
+                }
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public boolean shouldIgnoreInInterface(String symbol) {
+        return shouldIgnoreInInterface(symbol, true);
+    }
+
+    public boolean shouldIgnoreInInterface(String symbol, boolean checkEXT) {
+        return shouldIgnoreExtension(symbol, checkEXT) || super.shouldIgnoreInInterface(symbol);
+    }
+
+    @Override
+    public boolean shouldIgnoreInImpl(String symbol) {
+        return shouldIgnoreInImpl(symbol, true);
+    }
+
+    public boolean shouldIgnoreInImpl(String symbol, boolean checkEXT) {
+        return shouldIgnoreExtension(symbol, checkEXT) || super.shouldIgnoreInImpl(symbol);
+    }
+
+    /** Should we automatically ignore extensions that have already been
+    fully subsumed into the OpenGL core namespace, and if they have
+    not been, indicate which definition is not already in the core? */
+    public boolean getAutoUnifyExtensions() {
+        return autoUnifyExtensions;
+    }
+
+    /** If true, accept all non encapsulated defines and functions,
+     * as it is mandatory for GL declarations. */
+    public boolean getAllowNonGLExtensions() {
+        return allowNonGLExtensions;
+    }
+
+    /** shall the non unified (uniq) vendor extensions be dropped ?  */
+    public boolean getDropUniqVendorExtensions(String extName) {
+        return dropUniqVendorExtensions.contains(extName);
+    }
+
+    /** Returns the kind of buffer object this function deals with, or
+    null if none. */
+    GLEmitter.BufferObjectKind getBufferObjectKind(String name) {
+        return bufferObjectKinds.get(name);
+    }
+
+    public boolean isBufferObjectFunction(String name) {
+        return (getBufferObjectKind(name) != null);
+    }
+
+    /** Parses any GL headers specified in the configuration file for
+    the purpose of being able to ignore an extension at a time. */
+    public void parseGLHeaders(GlueEmitterControls controls) throws IOException {
+        if (!glHeaders.isEmpty()) {
+            glInfo = new BuildStaticGLInfo();
+            for (String file : glHeaders) {
+                String fullPath = controls.findHeaderFile(file);
+                if (fullPath == null) {
+                    throw new IOException("Unable to locate header file \"" + file + "\"");
+                }
+                glInfo.parse(fullPath);
+            }
+        }
+    }
+
+    /** Returns the information about the association between #defines,
+    function symbols and the OpenGL extensions they are defined
+    in. */
+    public BuildStaticGLInfo getGLInfo() {
+        return glInfo;
+    }
+
+    /** Returns the OpenGL extensions that should have all of their
+    constant definitions and functions renamed into the core
+    namespace; for example, glGenFramebuffersEXT to
+    glGenFramebuffers and GL_FRAMEBUFFER_EXT to GL_FRAMEBUFFER. */
+    public Set<String> getExtensionsRenamedIntoCore() {
+        return extensionsRenamedIntoCore;
+    }
+}
diff --git a/src/java/com/sun/gluegen/opengl/GLEmitter.java b/src/java/com/sun/gluegen/opengl/GLEmitter.java
new file mode 100644
index 000000000..b5df6ff2d
--- /dev/null
+++ b/src/java/com/sun/gluegen/opengl/GLEmitter.java
@@ -0,0 +1,455 @@
+/*
+ * 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.
+ * 
+ * Sun gratefully acknowledges that this software was originally authored
+ * and developed by Kenneth Bradley Russell and Christopher John Kline.
+ */
+package com.sun.gluegen.opengl;
+
+import java.io.*;
+import java.util.*;
+import com.sun.gluegen.*;
+import com.sun.gluegen.cgram.types.*;
+import com.sun.gluegen.procaddress.*;
+import com.jogamp.gluegen.runtime.opengl.GLExtensionNames;
+
+/**
+ * A subclass of ProcAddressEmitter with special OpenGL-specific
+ * configuration abilities.
+ */
+public class GLEmitter extends ProcAddressEmitter {
+
+    // Keeps track of which MethodBindings were created for handling
+    // Buffer Object variants. Used as a Set rather than a Map.
+    private Map<MethodBinding, MethodBinding> bufferObjectMethodBindings = new IdentityHashMap<MethodBinding, MethodBinding>();
+
+    enum BufferObjectKind { UNPACK_PIXEL, PACK_PIXEL, ARRAY, ELEMENT}
+
+    @Override
+    public void beginEmission(GlueEmitterControls controls) throws IOException {
+        getGLConfig().parseGLHeaders(controls);
+        renameExtensionsIntoCore();
+        if (getGLConfig().getAutoUnifyExtensions()) {
+            unifyExtensions(controls);
+        }
+        super.beginEmission(controls);
+    }
+
+    protected void renameExtensionsIntoCore() {
+        // This method handles renaming of entire extensions into the
+        // OpenGL core namespace. For example, it is used to move certain
+        // OpenGL ES (OES) extensions into the core namespace which are
+        // already in the core namespace in desktop OpenGL. It builds upon
+        // renaming mechanisms that are built elsewhere.
+
+        GLConfiguration config = getGLConfig();
+        Set<String> extensionsRenamedIntoCore = config.getExtensionsRenamedIntoCore();
+        BuildStaticGLInfo glInfo = config.getGLInfo();
+        if (null == glInfo) {
+            if (extensionsRenamedIntoCore.size() > 0) {
+                throw new RuntimeException("ExtensionRenamedIntoCore (num: " + extensionsRenamedIntoCore.size() + "), but no GLHeader");
+            }
+            return;
+        }
+        for (String extension : extensionsRenamedIntoCore) {
+            Set<String> declarations = glInfo.getDeclarations(extension);
+            if (declarations != null) {
+                for (Iterator<String> iterator = declarations.iterator(); iterator.hasNext();) {
+                    String decl = iterator.next();
+                    boolean isGLFunction = GLExtensionNames.isGLFunction(decl);
+                    boolean isGLEnumeration = false;
+                    if (!isGLFunction) {
+                        isGLEnumeration = GLExtensionNames.isGLEnumeration(decl);
+                    }
+                    if (isGLFunction || isGLEnumeration) {
+                        String renamed = GLExtensionNames.normalize(decl, isGLFunction);
+                        if (!renamed.equals(decl)) {
+                            config.addJavaSymbolRename(decl, renamed);
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    class ExtensionUnifier implements SymbolFilter {
+
+        private List<ConstantDefinition> constants;
+        private List<FunctionSymbol> functions;
+
+        public void filterSymbols(List<ConstantDefinition> constants,
+                List<FunctionSymbol> functions) {
+            this.constants = constants;
+            this.functions = functions;
+            doWork();
+        }
+
+        public List<ConstantDefinition> getConstants() {
+            return constants;
+        }
+
+        public List<FunctionSymbol> getFunctions() {
+            return functions;
+        }
+
+        private void doWork() {
+            BuildStaticGLInfo glInfo = getGLConfig().getGLInfo();
+            if (glInfo == null) {
+                return;
+            }
+            // Try to retain a "good" ordering for these symbols
+            Map<String, ConstantDefinition> constantMap = new LinkedHashMap<String, ConstantDefinition>();
+            for (ConstantDefinition def : constants) {
+                constantMap.put(def.getName(), def);
+            }
+            Map<String, FunctionSymbol> functionMap = new LinkedHashMap<String, FunctionSymbol>();
+            for (FunctionSymbol sym : functions) {
+                functionMap.put(sym.getName(), sym);
+            }
+
+            // Go through all of the declared extensions.
+            // For each extension, look at its #define and function symbols.
+            // If we find all of the extension's symbols in the core API under
+            // non-ARB (or whatever is the suffix) names, then remove this extension
+            // from the public API. If it turns out that we are running on hardware
+            // that doesn't support the core version of these APIs, the runtime
+            // will take care of looking up the extension version of these entry
+            // points.
+            Set<String> extensionNames = glInfo.getExtensions();
+
+            for (String extension : extensionNames) {
+                Set<String> declarations = glInfo.getDeclarations(extension);
+                boolean isExtension = true;
+                boolean shouldUnify = true;
+                String cause = null;
+                for (String decl : declarations) {
+                    boolean isFunc = !decl.startsWith("GL_");
+                    if (!GLExtensionNames.isExtension(decl, isFunc)) {
+                        isExtension = false;
+                        break;
+                    }
+                    // See whether we're emitting glue code for this
+                    // entry point or definition at all
+                    if (isFunc) {
+                        if (!functionMap.containsKey(decl)) {
+                            isExtension = false;
+                            break;
+                        }
+                    } else {
+                        if (!constantMap.containsKey(decl)) {
+                            isExtension = false;
+                            break;
+                        }
+                    }
+                    cause = decl;
+                    String unifiedName = GLExtensionNames.normalize(decl, isFunc);
+                    // NOTE that we look up the unified name in the
+                    // BuildStaticGLInfo's notion of the APIs -- since
+                    // we might not be emitting glue code for the
+                    // headers that actually contain the core entry
+                    // point. Think of the case where we are parsing the
+                    // GLES2 gl2.h, which contains certain desktop
+                    // OpenGL extensions that have been moved into the
+                    // core, but later generating the implementing glue
+                    // code (not the interface) for the desktop gl.h /
+                    // glext.h.
+                    shouldUnify = (glInfo.getExtension(unifiedName) != null);
+                    //                  if (isFunc) {
+                    //                      shouldUnify = functionMap.containsKey(unifiedName);
+                    //                  } else {
+                    //                      shouldUnify = constantMap.containsKey(unifiedName);
+                    //                  }
+                    if (!shouldUnify) {
+                        break;
+                    }
+                }
+                if (isExtension) {
+                    if (shouldUnify) {
+                        for (String decl : declarations) {
+                            boolean isFunc = !decl.startsWith("GL_");
+                            if (isFunc) {
+                                functionMap.remove(decl);
+                            } else {
+                                constantMap.remove(decl);
+                            }
+                        }
+                        System.err.println("INFO: unified extension " + extension + " into core API");
+                    } else {
+                        System.err.println("INFO: didn't unify extension " + extension + " into core API because of " + cause);
+                    }
+                }
+            }
+            constants = new ArrayList<ConstantDefinition>(constantMap.values());
+            functions = new ArrayList<FunctionSymbol>(functionMap.values());
+        }
+    }
+
+    private void unifyExtensions(GlueEmitterControls controls) {
+        controls.runSymbolFilter(new ExtensionUnifier());
+    }
+
+    @Override
+    protected JavaConfiguration createConfig() {
+        return new GLConfiguration(this);
+    }
+
+    /** In order to implement Buffer Object variants of certain
+    functions we generate another MethodBinding which maps the void*
+    argument to a Java long. The generation of emitters then takes
+    place as usual. We do however need to keep track of the modified
+    MethodBinding object so that we can also modify the emitters
+    later to inform them that their argument has changed. We might
+    want to push this functionality down into the MethodBinding
+    (i.e., mutators for argument names). We also would need to
+    inform the CMethodBindingEmitter that it is overloaded in this
+    case (though we default to true currently). */
+    @Override
+    protected List<MethodBinding> expandMethodBinding(MethodBinding binding) {
+        List<MethodBinding> bindings = super.expandMethodBinding(binding);
+
+        if (!getGLConfig().isBufferObjectFunction(binding.getName())) {
+            return bindings;
+        }
+
+        List<MethodBinding> newBindings = new ArrayList<MethodBinding>(bindings);
+
+        // Need to expand each one of the generated bindings to take a
+        // Java long instead of a Buffer for each void* argument
+
+        for (MethodBinding cur : bindings) {
+
+            // Some of these routines (glBitmap) take strongly-typed
+            // primitive pointers as arguments which are expanded into
+            // non-void* arguments
+            // This test (rather than !signatureUsesNIO) is used to catch
+            // more unexpected situations
+            if (cur.signatureUsesJavaPrimitiveArrays()) {
+                continue;
+            }
+
+            MethodBinding result = cur;
+            for (int i = 0; i < cur.getNumArguments(); i++) {
+                if (cur.getJavaArgumentType(i).isNIOBuffer()) {
+                    result = result.replaceJavaArgumentType(i, JavaType.createForClass(Long.TYPE));
+                }
+            }
+
+            if (result == cur) {
+                throw new RuntimeException("Error: didn't find any void* arguments for BufferObject function "
+                        + binding.getName());
+            }
+
+            newBindings.add(result);
+            // Now need to flag this MethodBinding so that we generate the
+            // correct flags in the emitters later
+            bufferObjectMethodBindings.put(result, result);
+        }
+
+        return newBindings;
+    }
+
+    @Override
+    protected boolean needsModifiedEmitters(FunctionSymbol sym) {
+        if ((!needsProcAddressWrapper(sym) && !needsBufferObjectVariant(sym))
+                || getConfig().isUnimplemented(sym.getName())) {
+            return false;
+        }
+
+        return true;
+    }
+
+    public boolean isBufferObjectMethodBinding(MethodBinding binding) {
+        return bufferObjectMethodBindings.containsKey(binding);
+    }
+
+    @Override
+    public void emitDefine(ConstantDefinition def, String optionalComment) throws Exception {
+        BuildStaticGLInfo glInfo = getGLConfig().getGLInfo();
+        if (null == glInfo) {
+            throw new Exception("No GLInfo for: " + def);
+        }
+        String symbolRenamed = def.getName();
+        StringBuilder newComment = new StringBuilder();
+        newComment.append("Part of <code>");
+        if (0 == addExtensionsOfSymbols2Buffer(newComment, ", ", symbolRenamed, def.getAliasedNames())) {
+            if (def.isEnum()) {
+                String enumName = def.getEnumName();
+                if (null != enumName) {
+                    newComment.append(enumName);
+                } else {
+                    newComment.append("CORE ENUM");
+                }
+            } else {
+                if (getGLConfig().getAllowNonGLExtensions()) {
+                    newComment.append("CORE DEF");
+                } else {
+                    // Note: All GL defines must be contained within an extension marker !
+                    // #ifndef GL_EXT_lala
+                    // #define GL_EXT_lala 1
+                    // ...
+                    // #endif
+                    if (JavaConfiguration.DEBUG_IGNORES) {
+                        StringBuilder sb = new StringBuilder();
+                        JavaEmitter.addStrings2Buffer(sb, ", ", symbolRenamed, def.getAliasedNames());
+                        System.err.println("Dropping marker: " + sb.toString());
+                    }
+                    return;
+                }
+            }
+        }
+        newComment.append("</code>");
+
+        if (null != optionalComment) {
+            newComment.append("<br>");
+            newComment.append(optionalComment);
+        }
+
+        super.emitDefine(def, newComment.toString());
+    }
+
+    public int addExtensionsOfSymbols2Buffer(StringBuilder buf, String sep, String first, Collection<String> col) {
+        BuildStaticGLInfo glInfo = getGLConfig().getGLInfo();
+        if (null == glInfo) {
+            throw new RuntimeException("No GLInfo for: " + first);
+        }
+        int num = 0;
+        if (null == buf) {
+            buf = new StringBuilder();
+        }
+        String extensionName;
+
+        Iterator<String> iter = col.iterator();
+        if (null != first) {
+            extensionName = glInfo.getExtension(first);
+            if (null != extensionName) {
+                buf.append(extensionName);
+                if (iter.hasNext()) {
+                    buf.append(sep);
+                }
+                num++;
+            }
+        }
+        while (iter.hasNext()) {
+            extensionName = glInfo.getExtension(iter.next());
+            if (null != extensionName) {
+                buf.append(extensionName);
+                if (iter.hasNext()) {
+                    buf.append(sep);
+                }
+                num++;
+            }
+        }
+        return num;
+    }
+
+    //----------------------------------------------------------------------
+    // Internals only below this point
+    //
+    @Override
+    protected void generateModifiedEmitters(JavaMethodBindingEmitter baseJavaEmitter, List<FunctionEmitter> emitters) {
+        List<FunctionEmitter> superEmitters = new ArrayList<FunctionEmitter>();
+        super.generateModifiedEmitters(baseJavaEmitter, superEmitters);
+
+        // See whether this is one of the Buffer Object variants
+        boolean bufferObjectVariant = bufferObjectMethodBindings.containsKey(baseJavaEmitter.getBinding());
+
+        for (FunctionEmitter emitter : superEmitters) {
+            if (emitter instanceof ProcAddressJavaMethodBindingEmitter) {
+                emitter = new GLJavaMethodBindingEmitter((ProcAddressJavaMethodBindingEmitter) emitter, this, bufferObjectVariant);
+            }
+            emitters.add(emitter);
+        }
+    }
+
+    protected boolean needsBufferObjectVariant(FunctionSymbol sym) {
+        return getGLConfig().isBufferObjectFunction(sym.getName());
+    }
+
+    protected GLConfiguration getGLConfig() {
+        return (GLConfiguration) getConfig();
+    }
+
+    @Override
+    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 = "+GLExtensionNames.class.getName()+".normalizeVEN(com.jogamp.gluegen.runtime.opengl.GLExtensionNames.normalizeARB(functionNameUsr, true), true);");
+        w.println("    String addressFieldNameBase = PROCADDRESS_VAR_PREFIX + functionNameBase;");
+        w.println("    java.lang.reflect.Field addressField = null;");
+        w.println("    int  funcNamePermNum = "+GLExtensionNames.class.getName()+".getFuncNamePermutationNumber(functionNameBase);");
+        w.println("    for(int i = 0; null==addressField && i < funcNamePermNum; i++) {");
+        w.println("        String addressFieldName = "+GLExtensionNames.class.getName()+".getFuncNamePermutation(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();
+    }
+}
diff --git a/src/java/com/sun/gluegen/opengl/GLJavaMethodBindingEmitter.java b/src/java/com/sun/gluegen/opengl/GLJavaMethodBindingEmitter.java
new file mode 100755
index 000000000..51182c153
--- /dev/null
+++ b/src/java/com/sun/gluegen/opengl/GLJavaMethodBindingEmitter.java
@@ -0,0 +1,123 @@
+/*
+ * 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.
+ * 
+ * Sun gratefully acknowledges that this software was originally authored
+ * and developed by Kenneth Bradley Russell and Christopher John Kline.
+ */
+package com.sun.gluegen.opengl;
+
+import java.io.*;
+import com.sun.gluegen.*;
+import com.sun.gluegen.cgram.types.*;
+import com.sun.gluegen.procaddress.*;
+
+/** A specialization of the proc address emitter which knows how to
+change argument names to take into account Vertex Buffer Object /
+Pixel Buffer Object variants. */
+public class GLJavaMethodBindingEmitter extends ProcAddressJavaMethodBindingEmitter {
+
+    protected boolean bufferObjectVariant;
+    protected GLEmitter glEmitter;
+    protected CommentEmitter glCommentEmitter = new GLCommentEmitter();
+
+    public GLJavaMethodBindingEmitter(JavaMethodBindingEmitter methodToWrap, boolean callThroughProcAddress,
+            String getProcAddressTableExpr, boolean changeNameAndArguments, boolean bufferObjectVariant, GLEmitter emitter) {
+
+        super(methodToWrap, callThroughProcAddress, getProcAddressTableExpr, changeNameAndArguments, emitter);
+        this.bufferObjectVariant = bufferObjectVariant;
+        this.glEmitter = emitter;
+        setCommentEmitter(glCommentEmitter);
+    }
+
+    public GLJavaMethodBindingEmitter(ProcAddressJavaMethodBindingEmitter methodToWrap, GLEmitter emitter, boolean bufferObjectVariant) {
+        super(methodToWrap);
+        this.bufferObjectVariant = bufferObjectVariant;
+        this.glEmitter = emitter;
+        setCommentEmitter(glCommentEmitter);
+    }
+
+    public GLJavaMethodBindingEmitter(GLJavaMethodBindingEmitter methodToWrap) {
+        this(methodToWrap, methodToWrap.glEmitter, methodToWrap.bufferObjectVariant);
+    }
+
+    @Override
+    protected String getArgumentName(int i) {
+        String name = super.getArgumentName(i);
+
+        if (!bufferObjectVariant) {
+            return name;
+        }
+
+        // Emitters for VBO/PBO-related routines change the outgoing
+        // argument name for the buffer
+        if (binding.getJavaArgumentType(i).isLong()) {
+            Type cType = binding.getCArgumentType(i);
+            Type targetType = cType.asPointer().getTargetType();
+            if (cType.isPointer() && (targetType.isVoid() || targetType.isPrimitive())) {
+                return name + "_buffer_offset";
+            }
+        }
+
+        return name;
+    }
+
+    protected class GLCommentEmitter extends JavaMethodBindingEmitter.DefaultCommentEmitter {
+
+        @Override
+        protected void emitBindingCSignature(MethodBinding binding, PrintWriter writer) {
+
+            super.emitBindingCSignature(binding, writer);
+
+            String symbolRenamed = binding.getName();
+            StringBuilder newComment = new StringBuilder();
+
+            newComment.append("<br>Part of <code>");
+            if (0 == glEmitter.addExtensionsOfSymbols2Buffer(newComment, ", ", symbolRenamed, binding.getAliasedNames())) {
+                if (glEmitter.getGLConfig().getAllowNonGLExtensions()) {
+                    newComment.append("CORE FUNC");
+                } else {
+                    StringBuilder sb = new StringBuilder();
+                    JavaEmitter.addStrings2Buffer(sb, ", ", symbolRenamed, binding.getAliasedNames());
+                    RuntimeException ex = new RuntimeException("Couldn't find extension to: " + binding + " ; " + sb.toString());
+                    glEmitter.getGLConfig().getGLInfo().dump();
+                    // glEmitter.getGLConfig().dumpRenames();
+                    throw ex;
+                }
+            }
+            newComment.append("</code>");
+            writer.print(newComment.toString());
+        }
+    }
+}