Fixed more problems related to recent restructuring of glue code

generation to support simultaneous 32- and 64-bit ports. Now uses
size() (on Java side) and sizeof (on C side) when creating direct
Buffers for struct accessors rather than passing MachineDescription
down to JavaMethodBindingEmitter and CMethodBindingEmitter. Now uses
64-bit MachineDescription when sizing outgoing arguments and return
types for bound methods.


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@506 232f8b59-042b-4e1e-8c03-345bb8c30851

10 files changed, 46 insertions, 76 deletions

diff --git a/src/classes/com/sun/gluegen/CMethodBindingEmitter.java b/src/classes/com/sun/gluegen/CMethodBindingEmitter.java
index a1cae8d51..550d8d739 100644
--- a/src/classes/com/sun/gluegen/CMethodBindingEmitter.java
+++ b/src/classes/com/sun/gluegen/CMethodBindingEmitter.java
@@ -120,7 +120,6 @@ public class CMethodBindingEmitter extends FunctionEmitter
    */
   public CMethodBindingEmitter(MethodBinding binding,
                                PrintWriter output,
-                               MachineDescription defaultMachDesc,
                                String javaPackageName,
                                String javaClassName,                   
                                boolean isOverloadedBinding,
@@ -128,7 +127,7 @@ public class CMethodBindingEmitter extends FunctionEmitter
                                boolean forImplementingMethodCall,
                                boolean forIndirectBufferAndArrayImplementation)
   {
-    super(output, defaultMachDesc);
+    super(output);
 
     assert(binding != null);
     assert(javaClassName != null);
@@ -382,7 +381,7 @@ public class CMethodBindingEmitter extends FunctionEmitter
   }
 
   
-  protected void emitBody(PrintWriter writer, MachineDescription machDesc)
+  protected void emitBody(PrintWriter writer)
   {    
     writer.println(" {");
     emitBodyVariableDeclarations(writer);
@@ -393,7 +392,7 @@ public class CMethodBindingEmitter extends FunctionEmitter
     emitBodyUserVariableAssignments(writer);
     emitBodyVariablePostCallCleanup(writer, true);
     emitBodyVariablePostCallCleanup(writer, false);
-    emitBodyReturnResult(writer, machDesc);
+    emitBodyReturnResult(writer);
     writer.println("}");
     writer.println();
   }
@@ -966,7 +965,7 @@ public class CMethodBindingEmitter extends FunctionEmitter
     }
   }
 
-  protected void emitBodyReturnResult(PrintWriter writer, MachineDescription machDesc)
+  protected void emitBodyReturnResult(PrintWriter writer)
   {
     // WARNING: this code assumes that the return type has already been
     // typedef-resolved.
@@ -997,11 +996,9 @@ public class CMethodBindingEmitter extends FunctionEmitter
           writer.print(
             returnValueCapacityExpression.format(argumentNames));
         } else {
-          SizeThunk sz = null;
           if (cReturnType.isPointer() &&
               cReturnType.asPointer().getTargetType().isCompound()) {
-            sz = cReturnType.asPointer().getTargetType().getSize();
-            if (sz == null) {
+            if (cReturnType.asPointer().getTargetType().getSize() == null) {
               throw new RuntimeException(
                 "Error emitting code for compound return type "+
                 "for function \"" + binding + "\": " +
@@ -1010,14 +1007,12 @@ public class CMethodBindingEmitter extends FunctionEmitter
                 cReturnType.asPointer().getTargetType() + " was not)"
               );
             }
-          } else {
-            sz = cReturnType.getSize();
           }
-          writer.print(sz.compute(machDesc));
+          writer.print("sizeof(" + cReturnType.getName() + ")");
           System.err.println(
             "WARNING: No capacity specified for java.nio.Buffer return " +
             "value for function \"" + binding + "\";" +
-            " assuming size of equivalent C return type (" + sz + " bytes): " + binding); 
+            " assuming size of equivalent C return type (sizeof(" + cReturnType.getName() + ")): " + binding); 
         }
         writer.println(");");
       } else if (javaReturnType.isString()) {
@@ -1044,11 +1039,8 @@ public class CMethodBindingEmitter extends FunctionEmitter
         } else {
           baseType = retType.asArray().getElementType().asPointer().getTargetType();
         }
-        SizeThunk sz = baseType.getSize();
-        if (sz == null)
-          sz = SizeThunk.constant(0);
         writer.println("    (*env)->SetObjectArrayElement(env, " + arrayRes + ", " + arrayIdx +
-                       ", (*env)->NewDirectByteBuffer(env, _res[" + arrayIdx + "], " + sz.compute(machDesc) + "));");
+                       ", (*env)->NewDirectByteBuffer(env, _res[" + arrayIdx + "], sizeof(" + baseType.getName() + ")));");
         writer.println("  }");
         writer.println("  return " + arrayRes + ";");
       } else if (javaReturnType.isArray()) {
diff --git a/src/classes/com/sun/gluegen/FunctionEmitter.java b/src/classes/com/sun/gluegen/FunctionEmitter.java
index 2f52a9f36..3fa6f0341 100644
--- a/src/classes/com/sun/gluegen/FunctionEmitter.java
+++ b/src/classes/com/sun/gluegen/FunctionEmitter.java
@@ -50,16 +50,14 @@ public abstract class FunctionEmitter
   private HashSet modifiers = new HashSet(4);
   private CommentEmitter commentEmitter = null;
   private PrintWriter defaultOutput;
-  private MachineDescription defaultMachDesc;
 
   /**
    * Constructs the FunctionEmitter with a CommentEmitter that emits nothing.
    */
-  public FunctionEmitter(PrintWriter defaultOutput, MachineDescription defaultMachDesc)
+  public FunctionEmitter(PrintWriter defaultOutput)
   {
     assert(defaultOutput != null);
     this.defaultOutput = defaultOutput;
-    this.defaultMachDesc = defaultMachDesc;
   }
   
   /**
@@ -69,13 +67,10 @@ public abstract class FunctionEmitter
     modifiers      = (HashSet) arg.modifiers.clone();
     commentEmitter = arg.commentEmitter;
     defaultOutput  = arg.defaultOutput;
-    defaultMachDesc  = arg.defaultMachDesc;
   }
 
   public PrintWriter getDefaultOutput() { return defaultOutput; }
 
-  public MachineDescription getDefaultMachineDescription() { return defaultMachDesc; }
-  
   public void addModifiers(Iterator/*<EmissionModifier>*/ mi)
   {
     while (mi.hasNext())
@@ -99,35 +94,29 @@ public abstract class FunctionEmitter
    * Emit the function to the specified output (instead of the default
    * output).
    */
-  public void emit(PrintWriter output, MachineDescription machDesc)
+  public void emit(PrintWriter output)
   {
     emitDocComment(output);
     //output.println("  // Emitter: " + getClass().getName());
     emitSignature(output);
-    emitBody(output, machDesc);
+    emitBody(output);
   }
 
   /**
    * Emit the function to the default output (the output that was passed to
    * the constructor)
    */
-  public final void emit(MachineDescription machDesc)
+  public final void emit()
   {
-    emit(getDefaultOutput(), machDesc);
+    emit(getDefaultOutput());
   }
 
   /** Returns, as a String, whatever {@link #emit} would output. */
   public String toString()
   {
-    return toString(getDefaultMachineDescription());
-  }
-
-  /** Returns, as a String, whatever {@link #emit} would output. */
-  public String toString(MachineDescription machDesc)
-  {
     StringWriter sw = new StringWriter(500);
     PrintWriter w = new PrintWriter(sw);
-    emit(w, machDesc);
+    emit(w);
     return sw.toString();
   }
 
@@ -207,7 +196,7 @@ public abstract class FunctionEmitter
   protected abstract void emitName(PrintWriter writer); 
   /** Returns the number of arguments emitted. */
   protected abstract int emitArguments(PrintWriter writer);  
-  protected abstract void emitBody(PrintWriter writer, MachineDescription machDesc);
+  protected abstract void emitBody(PrintWriter writer);
   
   public static class EmissionModifier
   {    
diff --git a/src/classes/com/sun/gluegen/JavaEmitter.java b/src/classes/com/sun/gluegen/JavaEmitter.java
index 949dc6a51..d4bafb7a8 100644
--- a/src/classes/com/sun/gluegen/JavaEmitter.java
+++ b/src/classes/com/sun/gluegen/JavaEmitter.java
@@ -84,7 +84,6 @@ public class JavaEmitter implements GlueEmitter {
   private PrintWriter javaWriter; // Emits either interface or, in AllStatic mode, everything
   private PrintWriter javaImplWriter; // Only used in non-AllStatic modes for impl class
   private PrintWriter cWriter;
-  private MachineDescription machDesc;
   private MachineDescription machDesc32;
   private MachineDescription machDesc64;
   
@@ -101,11 +100,6 @@ public class JavaEmitter implements GlueEmitter {
 
     machDesc32 = md32;
     machDesc64 = md64;
-    if (machDesc32 == null) {
-      machDesc = machDesc64;
-    } else {
-      machDesc = machDesc32;
-    }
   }
 
   public void beginEmission(GlueEmitterControls controls) throws IOException
@@ -293,7 +287,7 @@ public class JavaEmitter implements GlueEmitter {
     for (int i = 0; i < methodBindingEmitters.size(); ++i) {
       FunctionEmitter emitter = (FunctionEmitter)methodBindingEmitters.get(i);      
       try {
-        emitter.emit(machDesc);
+        emitter.emit();
       } catch (Exception e) {
         throw new RuntimeException(
             "Error while emitting binding for \"" + emitter.getName() + "\"", e);
@@ -360,7 +354,6 @@ public class JavaEmitter implements GlueEmitter {
     JavaMethodBindingEmitter emitter =
       new JavaMethodBindingEmitter(binding,
                                    writer,
-                                   machDesc,
                                    cfg.runtimeExceptionType(),
                                    !signatureOnly && needsBody,
                                    false,
@@ -423,7 +416,6 @@ public class JavaEmitter implements GlueEmitter {
         JavaMethodBindingEmitter emitter =
           new JavaMethodBindingEmitter(binding,
                                        writer,
-                                       machDesc,
                                        cfg.runtimeExceptionType(),
                                        false,
                                        true,
@@ -448,7 +440,6 @@ public class JavaEmitter implements GlueEmitter {
           emitter =
             new JavaMethodBindingEmitter(binding,
                                          writer,
-                                         machDesc,
                                          cfg.runtimeExceptionType(),
                                          false,
                                          true,
@@ -509,7 +500,6 @@ public class JavaEmitter implements GlueEmitter {
       CMethodBindingEmitter cEmitter =
         new CMethodBindingEmitter(binding,
                                   cWriter(),
-                                  machDesc,
                                   cfg.implPackageName(),
                                   cfg.implClassName(),
                                   true, /* NOTE: we always disambiguate with a suffix now, so this is optional */
@@ -534,7 +524,6 @@ public class JavaEmitter implements GlueEmitter {
         cEmitter =
           new CMethodBindingEmitter(binding,
                                     cWriter(),
-                                    machDesc,
                                     cfg.implPackageName(),
                                     cfg.implClassName(),
                                     true, /* NOTE: we always disambiguate with a suffix now, so this is optional */
@@ -564,7 +553,7 @@ public class JavaEmitter implements GlueEmitter {
 
     try {
       // Get Java binding for the function
-      MethodBinding mb = bindFunction(sym, null, null);
+      MethodBinding mb = bindFunction(sym, null, null, machDesc64);
       
       // JavaTypes representing C pointers in the initial
       // MethodBinding have not been lowered yet to concrete types
@@ -694,7 +683,7 @@ public class JavaEmitter implements GlueEmitter {
     }
 
     Type containingCType = canonicalize(new PointerType(SizeThunk.POINTER, structType, 0));
-    JavaType containingType = typeToJavaType(containingCType, false, machDesc);
+    JavaType containingType = typeToJavaType(containingCType, false, null);
     if (!containingType.isCompoundTypeWrapper()) {
       return;
     }
@@ -860,7 +849,7 @@ public class JavaEmitter implements GlueEmitter {
               // Emit method call and associated native code
               FunctionType   funcType     = fieldType.asPointer().getTargetType().asFunction();
               FunctionSymbol funcSym      = new FunctionSymbol(field.getName(), funcType);
-              MethodBinding  binding      = bindFunction(funcSym, containingType, containingCType);
+              MethodBinding  binding      = bindFunction(funcSym, containingType, containingCType, machDesc64);
               binding.findThisPointer(); // FIXME: need to provide option to disable this on per-function basis
               writer.println();
 
@@ -868,7 +857,6 @@ public class JavaEmitter implements GlueEmitter {
               JavaMethodBindingEmitter emitter =
                 new JavaMethodBindingEmitter(binding,
                                              writer,
-                                             machDesc,
                                              cfg.runtimeExceptionType(),
                                              true,
                                              false,
@@ -878,13 +866,12 @@ public class JavaEmitter implements GlueEmitter {
                                              false, // FIXME: should unify this with the general emission code
                                              false);
               emitter.addModifier(JavaMethodBindingEmitter.PUBLIC);
-              emitter.emit(machDesc);
+              emitter.emit();
 
               // Emit private native Java entry point for calling this function pointer
               emitter =
                 new JavaMethodBindingEmitter(binding,
                                              writer,
-                                             machDesc,
                                              cfg.runtimeExceptionType(),
                                              false,
                                              true,
@@ -895,20 +882,19 @@ public class JavaEmitter implements GlueEmitter {
                                              false);
               emitter.addModifier(JavaMethodBindingEmitter.PRIVATE);
               emitter.addModifier(JavaMethodBindingEmitter.NATIVE);
-              emitter.emit(machDesc);
+              emitter.emit();
 
               // Emit (private) C entry point for calling this function pointer
               CMethodBindingEmitter cEmitter =
                 new CMethodBindingEmitter(binding,
                                           cWriter,
-                                          machDesc,
                                           structClassPkg,
                                           containingTypeName,
                                           true, // FIXME: this is optional at this point
                                           false,
                                           true,
                                           false); // FIXME: should unify this with the general emission code
-              cEmitter.emit(machDesc);
+              cEmitter.emit();
             } catch (Exception e) {
               System.err.println("While processing field " + field + " of type " + name + ":");
               throw(e);
@@ -1504,7 +1490,8 @@ public class JavaEmitter implements GlueEmitter {
       emitters for them. */
   private MethodBinding bindFunction(FunctionSymbol sym,
                                      JavaType containingType,
-                                     Type containingCType) {
+                                     Type containingCType,
+                                     MachineDescription curMachDesc) {
 
     MethodBinding binding = new MethodBinding(sym, containingType, containingCType);
     
@@ -1514,14 +1501,14 @@ public class JavaEmitter implements GlueEmitter {
       PointerType prt = sym.getReturnType().asPointer();
       if (prt == null ||
           prt.getTargetType().asInt() == null ||
-          prt.getTargetType().getSize(machDesc) != 1) {
+          prt.getTargetType().getSize(curMachDesc) != 1) {
         throw new RuntimeException(
           "Cannot apply ReturnsString configuration directive to \"" + sym +
           "\". ReturnsString requires native method to have return type \"char *\"");
       }
       binding.setJavaReturnType(javaType(java.lang.String.class));
     } else {
-      binding.setJavaReturnType(typeToJavaType(sym.getReturnType(), false, machDesc));
+      binding.setJavaReturnType(typeToJavaType(sym.getReturnType(), false, curMachDesc));
     }
 
     // List of the indices of the arguments in this function that should be
@@ -1530,7 +1517,7 @@ public class JavaEmitter implements GlueEmitter {
 
     for (int i = 0; i < sym.getNumArguments(); i++) {
       Type cArgType = sym.getArgumentType(i);
-      JavaType mappedType = typeToJavaType(cArgType, true, machDesc);
+      JavaType mappedType = typeToJavaType(cArgType, true, curMachDesc);
       //System.out.println("C arg type -> \"" + cArgType + "\"" );
       //System.out.println("      Java -> \"" + mappedType + "\"" );
      
diff --git a/src/classes/com/sun/gluegen/JavaMethodBindingEmitter.java b/src/classes/com/sun/gluegen/JavaMethodBindingEmitter.java
index 031a994e0..5a7e065f7 100644
--- a/src/classes/com/sun/gluegen/JavaMethodBindingEmitter.java
+++ b/src/classes/com/sun/gluegen/JavaMethodBindingEmitter.java
@@ -89,7 +89,6 @@ public class JavaMethodBindingEmitter extends FunctionEmitter
 
   public JavaMethodBindingEmitter(MethodBinding binding,
                                   PrintWriter output,
-                                  MachineDescription defaultMachDesc,
                                   String runtimeExceptionType,
                                   boolean emitBody,
                                   boolean eraseBufferAndArrayTypes,
@@ -99,7 +98,7 @@ public class JavaMethodBindingEmitter extends FunctionEmitter
                                   boolean forIndirectBufferAndArrayImplementation,
                                   boolean isUnimplemented)
   {
-    super(output, defaultMachDesc);
+    super(output);
     this.binding = binding;
     this.runtimeExceptionType = runtimeExceptionType;
     this.emitBody = emitBody;
@@ -334,7 +333,7 @@ public class JavaMethodBindingEmitter extends FunctionEmitter
     return getArgumentName(i) + "_offset";
   }
 
-  protected void emitBody(PrintWriter writer, MachineDescription machDesc)
+  protected void emitBody(PrintWriter writer)
   {
     if (!emitBody) {
       writer.println(';');
@@ -348,7 +347,7 @@ public class JavaMethodBindingEmitter extends FunctionEmitter
         emitPrologueOrEpilogue(prologue, writer);
         emitPreCallSetup(binding, writer);
         //emitReturnVariableSetup(binding, writer);
-        emitReturnVariableSetupAndCall(binding, writer, machDesc);
+        emitReturnVariableSetupAndCall(binding, writer);
       }
       writer.println("  }");
     }
@@ -435,7 +434,7 @@ public class JavaMethodBindingEmitter extends FunctionEmitter
   }
 
 
-  protected void emitReturnVariableSetupAndCall(MethodBinding binding, PrintWriter writer, MachineDescription machDesc) {
+  protected void emitReturnVariableSetupAndCall(MethodBinding binding, PrintWriter writer) {
     writer.print("    ");
     JavaType returnType = binding.getJavaReturnType();
     boolean needsResultAssignment = false;
@@ -507,7 +506,7 @@ public class JavaMethodBindingEmitter extends FunctionEmitter
     }
     emitPrologueOrEpilogue(epilogue, writer);
     if (needsResultAssignment) {
-      emitCallResultReturn(binding, writer, machDesc);
+      emitCallResultReturn(binding, writer);
     }
   }
     
@@ -592,7 +591,7 @@ public class JavaMethodBindingEmitter extends FunctionEmitter
     return numArgsEmitted;
   }
 
-  protected void emitCallResultReturn(MethodBinding binding, PrintWriter writer, MachineDescription machDesc) {
+  protected void emitCallResultReturn(MethodBinding binding, PrintWriter writer) {
     JavaType returnType = binding.getJavaReturnType();
 
     if (returnType.isCompoundTypeWrapper()) {
@@ -621,8 +620,8 @@ public class JavaMethodBindingEmitter extends FunctionEmitter
         // Create temporary ByteBuffer slice
         // FIXME: probably need Type.getAlignedSize() for arrays of
         // compound types (rounding up to machine-dependent alignment)
-        writer.println("      _res.position(_count * " + cReturnType.getSize(machDesc) + ");");
-        writer.println("      _res.limit   ((1 + _count) * " + cReturnType.getSize(machDesc) + ");");
+        writer.println("      _res.position(_count * " + getReturnTypeString(true) + ".size());");
+        writer.println("      _res.limit   ((1 + _count) * " + getReturnTypeString(true) + ".size());");
         writer.println("      ByteBuffer _tmp = _res.slice();");
         writer.println("      _tmp.order(ByteOrder.nativeOrder());");
         writer.println("      _res.position(0);");
diff --git a/src/classes/com/sun/gluegen/cgram/types/MachineDescription.java b/src/classes/com/sun/gluegen/cgram/types/MachineDescription.java
index 41923979b..b3aaf53aa 100644
--- a/src/classes/com/sun/gluegen/cgram/types/MachineDescription.java
+++ b/src/classes/com/sun/gluegen/cgram/types/MachineDescription.java
@@ -48,6 +48,7 @@ public class MachineDescription {
   private int floatSizeInBytes;
   private int doubleSizeInBytes;
   private int pointerSizeInBytes;
+  private int structAlignmentInBytes;
 
   public MachineDescription(int charSizeInBytes,
                             int shortSizeInBytes,
@@ -56,7 +57,8 @@ public class MachineDescription {
                             int int64SizeInBytes,
                             int floatSizeInBytes,
                             int doubleSizeInBytes,
-                            int pointerSizeInBytes) {
+                            int pointerSizeInBytes,
+                            int structAlignmentInBytes) {
     this.charSizeInBytes    = charSizeInBytes;
     this.shortSizeInBytes   = shortSizeInBytes;
     this.intSizeInBytes     = intSizeInBytes;
@@ -65,6 +67,7 @@ public class MachineDescription {
     this.floatSizeInBytes   = floatSizeInBytes;
     this.doubleSizeInBytes  = doubleSizeInBytes;
     this.pointerSizeInBytes = pointerSizeInBytes;
+    this.structAlignmentInBytes = structAlignmentInBytes;
   }
 
   public int charSizeInBytes()    { return charSizeInBytes;   }
@@ -75,4 +78,5 @@ public class MachineDescription {
   public int floatSizeInBytes()   { return floatSizeInBytes;  }
   public int doubleSizeInBytes()  { return doubleSizeInBytes; }
   public int pointerSizeInBytes() { return pointerSizeInBytes; }
+  public int structAlignmentInBytes() { return structAlignmentInBytes; }
 }
diff --git a/src/classes/com/sun/gluegen/cgram/types/MachineDescription32Bit.java b/src/classes/com/sun/gluegen/cgram/types/MachineDescription32Bit.java
index 1dbbb700c..7b8f12d92 100644
--- a/src/classes/com/sun/gluegen/cgram/types/MachineDescription32Bit.java
+++ b/src/classes/com/sun/gluegen/cgram/types/MachineDescription32Bit.java
@@ -41,6 +41,6 @@ package com.sun.gluegen.cgram.types;
 
 public class MachineDescription32Bit extends MachineDescription {
   public MachineDescription32Bit() {
-    super(1, 2, 4, 4, 8, 4, 8, 4);
+    super(1, 2, 4, 4, 8, 4, 8, 4, 8);
   }
 }
diff --git a/src/classes/com/sun/gluegen/cgram/types/MachineDescription64Bit.java b/src/classes/com/sun/gluegen/cgram/types/MachineDescription64Bit.java
index 00d581266..10363998f 100644
--- a/src/classes/com/sun/gluegen/cgram/types/MachineDescription64Bit.java
+++ b/src/classes/com/sun/gluegen/cgram/types/MachineDescription64Bit.java
@@ -41,6 +41,6 @@ package com.sun.gluegen.cgram.types;
 
 public class MachineDescription64Bit extends MachineDescription {
   public MachineDescription64Bit() {
-    super(1, 2, 4, 8, 8, 4, 8, 8);
+    super(1, 2, 4, 8, 8, 4, 8, 8, 16);
   }
 }
diff --git a/src/classes/com/sun/gluegen/procaddress/ProcAddressCMethodBindingEmitter.java b/src/classes/com/sun/gluegen/procaddress/ProcAddressCMethodBindingEmitter.java
index cc363178d..423f009e2 100755
--- a/src/classes/com/sun/gluegen/procaddress/ProcAddressCMethodBindingEmitter.java
+++ b/src/classes/com/sun/gluegen/procaddress/ProcAddressCMethodBindingEmitter.java
@@ -72,7 +72,6 @@ public class ProcAddressCMethodBindingEmitter extends CMethodBindingEmitter {
         }
       },
       methodToWrap.getDefaultOutput(),
-      methodToWrap.getDefaultMachineDescription(),
       methodToWrap.getJavaPackageName(),
       methodToWrap.getJavaClassName(),
       methodToWrap.getIsOverloadedBinding(),
diff --git a/src/classes/com/sun/opengl/impl/windows/WindowsGLDrawable.java b/src/classes/com/sun/opengl/impl/windows/WindowsGLDrawable.java
index e7b65a052..0f3112824 100644
--- a/src/classes/com/sun/opengl/impl/windows/WindowsGLDrawable.java
+++ b/src/classes/com/sun/opengl/impl/windows/WindowsGLDrawable.java
@@ -199,7 +199,7 @@ public abstract class WindowsGLDrawable extends GLDrawableImpl {
               }
               gotAvailableCaps = true;
             } else {
-              int lastErr = WGL.GetLastError();
+              long lastErr = WGL.GetLastError();
               // Intel Extreme graphics fails with a zero error code
               if (lastErr != 0) {
                 throw new GLException("Unable to enumerate pixel formats of window using wglGetPixelFormatAttribivARB: error code " + WGL.GetLastError());
@@ -262,7 +262,7 @@ public abstract class WindowsGLDrawable extends GLDrawableImpl {
       pixelFormat = WGL.ChoosePixelFormat(hdc, pfd);
     }
     if (!WGL.SetPixelFormat(hdc, pixelFormat, pfd)) {
-      int lastError = WGL.GetLastError();
+      long lastError = WGL.GetLastError();
       if (DEBUG) {
         System.err.println(getThreadName() + ": SetPixelFormat failed: current context = " + WGL.wglGetCurrentContext() +
                            ", current DC = " + WGL.wglGetCurrentDC());
diff --git a/src/classes/com/sun/opengl/impl/windows/WindowsGLDrawableFactory.java b/src/classes/com/sun/opengl/impl/windows/WindowsGLDrawableFactory.java
index 3ea63934d..b534a11fc 100644
--- a/src/classes/com/sun/opengl/impl/windows/WindowsGLDrawableFactory.java
+++ b/src/classes/com/sun/opengl/impl/windows/WindowsGLDrawableFactory.java
@@ -192,9 +192,9 @@ public class WindowsGLDrawableFactory extends GLDrawableFactoryImpl {
   }
 
   static String wglGetLastError() {
-    int err = WGL.GetLastError();
+    long err = WGL.GetLastError();
     String detail = null;
-    switch (err) {
+    switch ((int) err) {
       case WGL.ERROR_INVALID_PIXEL_FORMAT: detail = "ERROR_INVALID_PIXEL_FORMAT";       break;
       case WGL.ERROR_NO_SYSTEM_RESOURCES:  detail = "ERROR_NO_SYSTEM_RESOURCES";        break;
       case WGL.ERROR_INVALID_DATA:         detail = "ERROR_INVALID_DATA";               break;