re-adding accidently removed files

git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/branches/JOGL_2_SANDBOX@1686 232f8b59-042b-4e1e-8c03-345bb8c30851

1 files changed, 866 insertions, 0 deletions

diff --git a/src/classes/com/sun/opengl/impl/glu/mipmap/Mipmap.java b/src/classes/com/sun/opengl/impl/glu/mipmap/Mipmap.java
new file mode 100644
index 000000000..6f247940d
--- /dev/null
+++ b/src/classes/com/sun/opengl/impl/glu/mipmap/Mipmap.java
@@ -0,0 +1,866 @@
+/*
+ * License Applicability. Except to the extent portions of this file are
+ * made subject to an alternative license as permitted in the SGI Free
+ * Software License B, Version 1.1 (the "License"), the contents of this
+ * file are subject only to the provisions of the License. You may not use
+ * this file except in compliance with the License. You may obtain a copy
+ * of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
+ * Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
+ * 
+ * http://oss.sgi.com/projects/FreeB
+ * 
+ * Note that, as provided in the License, the Software is distributed on an
+ * "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
+ * DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
+ * CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
+ * PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
+ * 
+ * NOTE:  The Original Code (as defined below) has been licensed to Sun
+ * Microsystems, Inc. ("Sun") under the SGI Free Software License B
+ * (Version 1.1), shown above ("SGI License").   Pursuant to Section
+ * 3.2(3) of the SGI License, Sun is distributing the Covered Code to
+ * you under an alternative license ("Alternative License").  This
+ * Alternative License includes all of the provisions of the SGI License
+ * except that Section 2.2 and 11 are omitted.  Any differences between
+ * the Alternative License and the SGI License are offered solely by Sun
+ * and not by SGI.
+ *
+ * Original Code. The Original Code is: OpenGL Sample Implementation,
+ * Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
+ * Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
+ * Copyright in any portions created by third parties is as indicated
+ * elsewhere herein. All Rights Reserved.
+ * 
+ * Additional Notice Provisions: The application programming interfaces
+ * established by SGI in conjunction with the Original Code are The
+ * OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
+ * April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
+ * 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
+ * Window System(R) (Version 1.3), released October 19, 1998. This software
+ * was created using the OpenGL(R) version 1.2.1 Sample Implementation
+ * published by SGI, but has not been independently verified as being
+ * compliant with the OpenGL(R) version 1.2.1 Specification.
+ */
+
+package com.sun.opengl.impl.glu.mipmap;
+
+import javax.media.opengl.GL;
+import javax.media.opengl.GL2;
+import javax.media.opengl.glu.GLU;
+import javax.media.opengl.GLException;
+import java.nio.*;
+
+/**
+ *
+ * @author  Administrator
+ */
+public class Mipmap {
+  
+  /** Creates a new instance of Mipmap */
+  public Mipmap() {
+  }
+  
+  public static int computeLog( int value ) {
+    int i = 0;
+    // Error
+    if( value == 0 ) {
+      return( -1 );
+    }
+    for( ;; ) {
+      if( (value & 1) >= 1 ) {
+        if( value != 1 ) {
+          return( -1 );
+        }
+        return( i );
+      }
+      value = value >> 1;
+      i++;
+    }
+  }
+  
+  /* Compute the nearest power of 2 number.  This algorithm is a little strange
+   * but it works quite well.
+   */
+  public static int nearestPower( int value ) {
+    int i = 1;
+    // Error!
+    if( value == 0 ) {
+      return( -1 );
+    }
+    for( ;; ) {
+      if( value == 1 ) {
+        return( i );
+      } else if( value == 3 ) {
+        return( i * 4 );
+      }
+      value = value >> 1;
+      i *= 2;
+    }
+  }
+  
+  public static short GLU_SWAP_2_BYTES( short s ) {
+    byte b = 0;
+    b = (byte)( s >>> 8 );
+    s = (short)( s << 8 );
+    s = (short)( s | (0x00FF & b) );
+    return( s );
+  }
+  
+  public static int GLU_SWAP_4_BYTES( int i ) {
+    int t = i << 24;
+    t |= 0x00FF0000 & ( i << 8 );
+    t |= 0x0000FF00 & ( i >>> 8 );
+    t |= 0x000000FF & ( i >>> 24 );
+    return( t );
+  }
+  
+  public static float GLU_SWAP_4_BYTES( float f ) {
+    int i = Float.floatToRawIntBits( f );
+    float temp = Float.intBitsToFloat( i );
+    return( temp );
+  }
+  
+  public static int checkMipmapArgs( int internalFormat, int format, int type ) {
+    if( !legalFormat( format ) || !legalType( type ) ) {
+      return( GLU.GLU_INVALID_ENUM );
+    }
+    if( format == GL2.GL_STENCIL_INDEX ) {
+      return( GLU.GLU_INVALID_ENUM );
+    }
+    if( !isLegalFormatForPackedPixelType( format, type ) ) {
+      return( GLU.GLU_INVALID_OPERATION );
+    }
+    return( 0 );
+  }
+  
+  public static boolean legalFormat( int format ) {
+    switch( format ) {
+      case( GL2.GL_COLOR_INDEX ):
+      case( GL2.GL_STENCIL_INDEX ):
+      case( GL2.GL_DEPTH_COMPONENT ):
+      case( GL2.GL_RED ):
+      case( GL2.GL_GREEN ):
+      case( GL2.GL_BLUE ):
+      case( GL2.GL_ALPHA ):
+      case( GL2.GL_RGB ):
+      case( GL2.GL_RGBA ):
+      case( GL2.GL_LUMINANCE ):
+      case( GL2.GL_LUMINANCE_ALPHA ):
+      case( GL2.GL_BGR ):
+      case( GL2.GL_BGRA ):
+        return( true );
+      default:
+        return( false );
+    }
+  }
+  
+  public static boolean legalType( int type ) {
+    switch( type ) {
+      case( GL2.GL_BITMAP ):
+      case( GL2.GL_BYTE ):
+      case( GL2.GL_UNSIGNED_BYTE ):
+      case( GL2.GL_SHORT ):
+      case( GL2.GL_UNSIGNED_SHORT ):
+      case( GL2.GL_INT ):
+      case( GL2.GL_UNSIGNED_INT ):
+      case( GL2.GL_FLOAT ):
+      case( GL2.GL_UNSIGNED_BYTE_3_3_2 ):
+      case( GL2.GL_UNSIGNED_BYTE_2_3_3_REV ):
+      case( GL2.GL_UNSIGNED_SHORT_5_6_5 ):
+      case( GL2.GL_UNSIGNED_SHORT_5_6_5_REV ):
+      case( GL2.GL_UNSIGNED_SHORT_4_4_4_4 ):
+      case( GL2.GL_UNSIGNED_SHORT_4_4_4_4_REV ):
+      case( GL2.GL_UNSIGNED_SHORT_5_5_5_1 ):
+      case( GL2.GL_UNSIGNED_SHORT_1_5_5_5_REV ):
+      case( GL2.GL_UNSIGNED_INT_8_8_8_8 ):
+      case( GL2.GL_UNSIGNED_INT_8_8_8_8_REV ):
+      case( GL2.GL_UNSIGNED_INT_10_10_10_2 ):
+      case( GL2.GL_UNSIGNED_INT_2_10_10_10_REV ):
+        return( true );
+      default:
+        return( false );
+    }
+  }
+  
+  public static boolean isTypePackedPixel( int type ) {
+    assert( legalType( type ) );
+    
+    if( type == GL2.GL_UNSIGNED_BYTE_3_3_2 ||
+        type == GL2.GL_UNSIGNED_BYTE_2_3_3_REV ||
+        type == GL2.GL_UNSIGNED_SHORT_5_6_5 ||
+        type == GL2.GL_UNSIGNED_SHORT_5_6_5_REV ||
+        type == GL2.GL_UNSIGNED_SHORT_4_4_4_4 ||
+        type == GL2.GL_UNSIGNED_SHORT_4_4_4_4_REV ||
+        type == GL2.GL_UNSIGNED_SHORT_5_5_5_1 ||
+        type == GL2.GL_UNSIGNED_SHORT_1_5_5_5_REV ||
+        type == GL2.GL_UNSIGNED_INT_8_8_8_8 ||
+        type == GL2.GL_UNSIGNED_INT_8_8_8_8_REV ||
+        type == GL2.GL_UNSIGNED_INT_10_10_10_2 ||
+        type == GL2.GL_UNSIGNED_INT_2_10_10_10_REV ) {
+          return( true );
+    }
+    return( false );
+  }
+  
+  public static boolean isLegalFormatForPackedPixelType( int format, int type ) {
+    // if not a packed pixel type then return true
+    if( isTypePackedPixel( type ) ) {
+      return( true );
+    }
+    
+    // 3_3_2/2_3_3_REV & 5_6_5/5_6_5_REV are only compatible with RGB
+    if( (type == GL2.GL_UNSIGNED_BYTE_3_3_2 || type == GL2.GL_UNSIGNED_BYTE_2_3_3_REV ||
+        type == GL2.GL_UNSIGNED_SHORT_5_6_5 || type == GL2.GL_UNSIGNED_SHORT_5_6_5_REV )
+        & format != GL2.GL_RGB ) {
+          return( false );
+    }
+    
+    // 4_4_4_4/4_4_4_4_REV & 5_5_5_1/1_5_5_5_REV & 8_8_8_8/8_8_8_8_REV &
+    // 10_10_10_2/2_10_10_10_REV are only campatible with RGBA, BGRA & ARGB_EXT
+    if( ( type == GL2.GL_UNSIGNED_SHORT_4_4_4_4 ||
+          type == GL2.GL_UNSIGNED_SHORT_4_4_4_4_REV ||
+          type == GL2.GL_UNSIGNED_SHORT_5_5_5_1 ||
+          type == GL2.GL_UNSIGNED_SHORT_1_5_5_5_REV ||
+          type == GL2.GL_UNSIGNED_INT_8_8_8_8 ||
+          type == GL2.GL_UNSIGNED_INT_8_8_8_8_REV ||
+          type == GL2.GL_UNSIGNED_INT_10_10_10_2 ||
+          type == GL2.GL_UNSIGNED_INT_2_10_10_10_REV ) &&
+          (format != GL2.GL_RGBA && format != GL2.GL_BGRA) ) {
+            return( false );
+    }
+    return( true );
+  }
+  
+  public static boolean isLegalLevels( int userLevel, int baseLevel, int maxLevel,
+                                            int totalLevels ) {
+    if( (baseLevel < 0) || (baseLevel < userLevel) || (maxLevel < baseLevel) ||
+                                                  (totalLevels < maxLevel) ) {
+      return( false );
+    }
+    return( true );
+  }
+  
+  /* Given user requested textures size, determine if it fits. If it doesn't then
+   * halve both sides and make the determination again until it does fit ( for
+   * IR only ).
+   * Note that proxy textures are not implemented in RE* even though they
+   * advertise the texture extension.
+   * Note that proxy textures are implemented but not according to spec in IMPACT*
+   */
+  public static void closestFit( GL gl, int target, int width, int height, int internalFormat,
+                                int format, int type, int[] newWidth, int[] newHeight ) {
+    // Use proxy textures if OpenGL version >= 1.1
+    if( Double.parseDouble( gl.glGetString( GL.GL_VERSION ).trim().substring( 0, 3 ) ) >= 1.1 ) {
+      int widthPowerOf2 = nearestPower( width );
+      int heightPowerOf2 = nearestPower( height );
+      int[] proxyWidth = new int[1];
+      boolean noProxyTextures = false;
+      
+      // Some drivers (in particular, ATI's) seem to set a GL error
+      // when proxy textures are used even though this is in violation
+      // of the spec. Guard against this and interactions with the
+      // DebugGL by watching for GLException.
+      try {
+        do {
+          // compute level 1 width & height, clamping each at 1
+          int widthAtLevelOne = ( ( width > 1 ) ? (widthPowerOf2 >> 1) : widthPowerOf2 );
+          int heightAtLevelOne = ( ( height > 1 ) ? (heightPowerOf2 >> 1) : heightPowerOf2 );
+          int proxyTarget;
+        
+          assert( widthAtLevelOne > 0 );
+          assert( heightAtLevelOne > 0 );
+        
+          // does width x height at level 1 & all their mipmaps fit?
+          if( target == GL2.GL_TEXTURE_2D || target == GL2.GL_PROXY_TEXTURE_2D ) {
+            proxyTarget = GL2.GL_PROXY_TEXTURE_2D;
+            gl.glTexImage2D( proxyTarget, 1, internalFormat, widthAtLevelOne,
+                             heightAtLevelOne, 0, format, type, null );
+          } else if( (target == GL2.GL_TEXTURE_CUBE_MAP_POSITIVE_X) || 
+                     (target == GL2.GL_TEXTURE_CUBE_MAP_NEGATIVE_X) || 
+                     (target == GL2.GL_TEXTURE_CUBE_MAP_POSITIVE_Y) || 
+                     (target == GL2.GL_TEXTURE_CUBE_MAP_NEGATIVE_Y) || 
+                     (target == GL2.GL_TEXTURE_CUBE_MAP_POSITIVE_Z) || 
+                     (target == GL2.GL_TEXTURE_CUBE_MAP_NEGATIVE_Z) ) {
+            proxyTarget = GL2.GL_PROXY_TEXTURE_CUBE_MAP;
+            gl.glTexImage2D( proxyTarget, 1, internalFormat, widthAtLevelOne,
+                             heightAtLevelOne, 0, format, type, null );
+          } else {
+            assert( target == GL2.GL_TEXTURE_1D || target == GL2.GL_PROXY_TEXTURE_1D );
+            proxyTarget = GL2.GL_PROXY_TEXTURE_1D;
+            gl.getGL2().glTexImage1D( proxyTarget, 1, internalFormat, widthAtLevelOne, 
+                             0, format, type, null );
+          }
+          if(gl.isGL2()) {
+            gl.getGL2().glGetTexLevelParameteriv( proxyTarget, 1, GL2.GL_TEXTURE_WIDTH, proxyWidth, 0 );
+          } else {
+            proxyWidth[0] = 0;
+          }
+          // does it fit?
+          if( proxyWidth[0] == 0 ) { // nope, so try again with theses sizes
+            if( widthPowerOf2 == 1 && heightPowerOf2 == 1 ) {
+              /* A 1x1 texture couldn't fit for some reason so break out.  This
+               * should never happen.  But things happen.  The disadvantage with
+               * this if-statement is that we will never be aware of when this
+               * happens since it will silently branch out.
+               */
+              noProxyTextures = true;
+              break;
+            }
+            widthPowerOf2 = widthAtLevelOne;
+            heightPowerOf2 = heightAtLevelOne;
+          }
+          // else it does fit
+        } while( proxyWidth[0] == 0 );
+      } catch (GLException e) {
+        noProxyTextures = true;
+      }
+      // loop must terminate
+      // return the width & height at level 0 that fits
+      if( !noProxyTextures ) {
+        newWidth[0] = widthPowerOf2;
+        newHeight[0] = heightPowerOf2;
+        return;
+      }
+    }
+    int[] maxsize = new int[1];
+    gl.glGetIntegerv( GL2.GL_MAX_TEXTURE_SIZE, maxsize , 0);
+    // clamp user's texture sizes to maximum sizes, if necessary
+    newWidth[0] = nearestPower( width );
+    if( newWidth[0] > maxsize[0] ) {
+      newWidth[0] = maxsize[0];
+    }
+    newHeight[0] = nearestPower( height );
+    if( newHeight[0] > maxsize[0] ) {
+      newHeight[0] = maxsize[0];
+    }
+  }
+  
+  public static void closestFit3D( GL gl, int target, int width, int height, int depth, 
+          int internalFormat, int format, int type, int[] newWidth, int[] newHeight,
+          int[] newDepth ) {
+    int widthPowerOf2 = nearestPower( width );
+    int heightPowerOf2 = nearestPower( height );
+    int depthPowerOf2 = nearestPower( depth );
+    int[] proxyWidth = new int[1];
+    
+    do {
+      // compute level 1 width & height & depth, clamping each at 1
+      int widthAtLevelOne = (widthPowerOf2 > 1) ? widthPowerOf2 >> 1 : widthPowerOf2;
+      int heightAtLevelOne = (heightPowerOf2 > 1) ? heightPowerOf2 >> 1 : heightPowerOf2;
+      int depthAtLevelOne = (depthPowerOf2 > 1) ? depthPowerOf2 >> 1 : depthPowerOf2;
+      int proxyTarget = 0;
+      assert( widthAtLevelOne > 0 );
+      assert( heightAtLevelOne > 0 );
+      assert( depthAtLevelOne > 0 );
+      
+      // does width x height x depth at level 1 & all their mipmaps fit?
+      if( target == GL2.GL_TEXTURE_3D || target == GL2.GL_PROXY_TEXTURE_3D ) {
+        proxyTarget = GL2.GL_PROXY_TEXTURE_3D;
+        gl.getGL2().glTexImage3D( proxyTarget, 1, internalFormat, widthAtLevelOne,
+                heightAtLevelOne, depthAtLevelOne, 0, format, type, null );
+      }
+      if(gl.isGL2()) {
+        gl.getGL2().glGetTexLevelParameteriv( proxyTarget, 1, GL2.GL_TEXTURE_WIDTH, proxyWidth, 0 );
+      } else {
+        proxyWidth[0] = 0;
+      }
+      // does it fit
+      if( proxyWidth[0] == 0 ) {
+        if( widthPowerOf2 == 1 && heightPowerOf2 == 1 && depthPowerOf2 == 1 ) {
+          newWidth[0] = newHeight[0] = newDepth[0] = 1;
+          return;
+        }
+        widthPowerOf2 = widthAtLevelOne;
+        heightPowerOf2 = heightAtLevelOne;
+        depthPowerOf2 = depthAtLevelOne;
+      }
+    } while( proxyWidth[0] == 0 );
+    // loop must terminate
+    
+    // return the width & height at level 0 that fits
+    newWidth[0] = widthPowerOf2;
+    newHeight[0] = heightPowerOf2;
+    newDepth[0] = depthPowerOf2;
+  }
+  
+  public static int elements_per_group( int format, int type ) {
+    // Return the number of elements per grtoup of a specified gromat
+    
+    // If the type is packedpixels then answer is 1
+    if( type == GL2.GL_UNSIGNED_BYTE_3_3_2 ||
+        type == GL2.GL_UNSIGNED_BYTE_2_3_3_REV ||
+        type == GL2.GL_UNSIGNED_SHORT_5_6_5 ||
+        type == GL2.GL_UNSIGNED_SHORT_5_6_5_REV ||
+        type == GL2.GL_UNSIGNED_SHORT_4_4_4_4 ||
+        type == GL2.GL_UNSIGNED_SHORT_4_4_4_4_REV ||
+        type == GL2.GL_UNSIGNED_SHORT_5_5_5_1 ||
+        type == GL2.GL_UNSIGNED_SHORT_1_5_5_5_REV ||
+        type == GL2.GL_UNSIGNED_INT_8_8_8_8 ||
+        type == GL2.GL_UNSIGNED_INT_8_8_8_8_REV ||
+        type == GL2.GL_UNSIGNED_INT_10_10_10_2 ||
+        type == GL2.GL_UNSIGNED_INT_2_10_10_10_REV ) {
+          return( 1 );
+    }
+    
+    // Types are not packed pixels so get elements per group
+    switch( format ) {
+      case( GL2.GL_RGB ):
+      case( GL2.GL_BGR ):
+        return( 3 );
+      case( GL2.GL_LUMINANCE_ALPHA ):
+        return( 2 );
+      case( GL2.GL_RGBA ):
+      case( GL2.GL_BGRA ):
+        return( 4 );
+      default:
+        return( 1 );
+    }
+  }
+  
+  public static int bytes_per_element( int type ) {
+    // return the number of bytes per element, based on the element type
+    
+    switch( type ) {
+      case( GL2.GL_BITMAP ):
+      case( GL2.GL_BYTE ):
+      case( GL2.GL_UNSIGNED_BYTE ):
+      case( GL2.GL_UNSIGNED_BYTE_3_3_2 ):
+      case( GL2.GL_UNSIGNED_BYTE_2_3_3_REV ):
+        return( 1 );
+      case( GL2.GL_SHORT ):
+      case( GL2.GL_UNSIGNED_SHORT ):
+      case( GL2.GL_UNSIGNED_SHORT_5_6_5 ):
+      case( GL2.GL_UNSIGNED_SHORT_5_6_5_REV ):
+      case( GL2.GL_UNSIGNED_SHORT_4_4_4_4 ):
+      case( GL2.GL_UNSIGNED_SHORT_4_4_4_4_REV ):
+      case( GL2.GL_UNSIGNED_SHORT_5_5_5_1 ):
+      case( GL2.GL_UNSIGNED_SHORT_1_5_5_5_REV ):
+        return( 2 );
+      case( GL2.GL_INT ):
+      case( GL2.GL_UNSIGNED_INT ):
+      case( GL2.GL_UNSIGNED_INT_8_8_8_8 ):
+      case( GL2.GL_UNSIGNED_INT_8_8_8_8_REV ):
+      case( GL2.GL_UNSIGNED_INT_10_10_10_2 ):
+      case( GL2.GL_UNSIGNED_INT_2_10_10_10_REV ):
+      case( GL2.GL_FLOAT ):
+        return( 4 );
+      default:
+        return( 4 );
+    }
+  }
+  
+  public static boolean is_index( int format ) {
+    return( format == GL2.GL_COLOR_INDEX || format == GL2.GL_STENCIL_INDEX );
+  }
+  
+  /* Compute memory required for internal packed array of data of given type and format. */
+  
+  public static int image_size( int width, int height, int format, int type ) {
+    int bytes_per_row;
+    int components;
+    
+    assert( width > 0 );
+    assert( height > 0 );
+    components = elements_per_group( format, type );
+    if( type == GL2.GL_BITMAP ) {
+      bytes_per_row = (width + 7) / 8;
+    } else {
+      bytes_per_row = bytes_per_element( type ) * width;
+    }
+    return( bytes_per_row * height * components );
+  }
+  
+  public static int imageSize3D( int width, int height, int depth, int format, int type ) {
+    int components = elements_per_group( format, type );
+    int bytes_per_row = bytes_per_element( type ) * width;
+    
+    assert( width > 0 && height > 0 && depth > 0 );
+    assert( type != GL2.GL_BITMAP );
+    
+    return( bytes_per_row * height * depth * components );
+  }
+  
+  public static void retrieveStoreModes( GL gl, PixelStorageModes psm ) {
+    int[] a = new int[1];
+    gl.glGetIntegerv( GL2.GL_UNPACK_ALIGNMENT, a, 0);
+    psm.setUnpackAlignment( a[0] );
+    gl.glGetIntegerv( GL2.GL_UNPACK_ROW_LENGTH, a, 0);
+    psm.setUnpackRowLength( a[0] );
+    gl.glGetIntegerv( GL2.GL_UNPACK_SKIP_ROWS, a, 0);
+    psm.setUnpackSkipRows( a[0] );
+    gl.glGetIntegerv( GL2.GL_UNPACK_SKIP_PIXELS, a, 0);
+    psm.setUnpackSkipPixels( a[0] );
+    gl.glGetIntegerv( GL2.GL_UNPACK_LSB_FIRST, a, 0);
+    psm.setUnpackLsbFirst( ( a[0] == 1 ) );
+    gl.glGetIntegerv( GL2.GL_UNPACK_SWAP_BYTES, a, 0);
+    psm.setUnpackSwapBytes( ( a[0] == 1 ) );
+    
+    gl.glGetIntegerv( GL2.GL_PACK_ALIGNMENT, a, 0);
+    psm.setPackAlignment( a[0] );
+    gl.glGetIntegerv( GL2.GL_PACK_ROW_LENGTH, a, 0);
+    psm.setPackRowLength( a[0] );
+    gl.glGetIntegerv( GL2.GL_PACK_SKIP_ROWS, a, 0);
+    psm.setPackSkipRows( a[0] );
+    gl.glGetIntegerv( GL2.GL_PACK_SKIP_PIXELS, a, 0);
+    psm.setPackSkipPixels( a[0] );
+    gl.glGetIntegerv( GL2.GL_PACK_LSB_FIRST, a, 0);
+    psm.setPackLsbFirst( ( a[0] == 1 ) );
+    gl.glGetIntegerv( GL2.GL_PACK_SWAP_BYTES, a, 0);
+    psm.setPackSwapBytes( ( a[0] == 1 ) );
+  }
+  
+  public static void retrieveStoreModes3D( GL gl, PixelStorageModes psm ) {
+    int[] a = new int[1];
+    gl.glGetIntegerv( GL2.GL_UNPACK_ALIGNMENT, a, 0);
+    psm.setUnpackAlignment( a[0] );
+    gl.glGetIntegerv( GL2.GL_UNPACK_ROW_LENGTH, a, 0);
+    psm.setUnpackRowLength( a[0] );
+    gl.glGetIntegerv( GL2.GL_UNPACK_SKIP_ROWS, a, 0);
+    psm.setUnpackSkipRows( a[0] );
+    gl.glGetIntegerv( GL2.GL_UNPACK_SKIP_PIXELS, a, 0);
+    psm.setUnpackSkipPixels( a[0] );
+    gl.glGetIntegerv( GL2.GL_UNPACK_LSB_FIRST, a, 0);
+    psm.setUnpackLsbFirst( ( a[0] == 1 ) );
+    gl.glGetIntegerv( GL2.GL_UNPACK_SWAP_BYTES, a, 0);
+    psm.setUnpackSwapBytes( ( a[0] == 1 ) );
+    gl.glGetIntegerv( GL2.GL_UNPACK_SKIP_IMAGES, a, 0);
+    psm.setUnpackSkipImages( a[0] );
+    gl.glGetIntegerv( GL2.GL_UNPACK_IMAGE_HEIGHT, a, 0);
+    psm.setUnpackImageHeight( a[0] );
+    
+    gl.glGetIntegerv( GL2.GL_PACK_ALIGNMENT, a, 0);
+    psm.setPackAlignment( a[0] );
+    gl.glGetIntegerv( GL2.GL_PACK_ROW_LENGTH, a, 0);
+    psm.setPackRowLength( a[0] );
+    gl.glGetIntegerv( GL2.GL_PACK_SKIP_ROWS, a, 0);
+    psm.setPackSkipRows( a[0] );
+    gl.glGetIntegerv( GL2.GL_PACK_SKIP_PIXELS, a, 0 );
+    psm.setPackSkipPixels( a[0] );
+    gl.glGetIntegerv( GL2.GL_PACK_LSB_FIRST, a, 0 );
+    psm.setPackLsbFirst( ( a[0] == 1 ) );
+    gl.glGetIntegerv( GL2.GL_PACK_SWAP_BYTES, a, 0 );
+    psm.setPackSwapBytes( ( a[0] == 1 ) );
+    gl.glGetIntegerv( GL2.GL_PACK_SKIP_IMAGES, a, 0 );
+    psm.setPackSkipImages( a[0] );
+    gl.glGetIntegerv( GL2.GL_PACK_IMAGE_HEIGHT, a, 0 );
+    psm.setPackImageHeight( a[0] );
+  }
+  
+  public static int gluScaleImage( GL gl, int format, int widthin, int heightin, 
+          int typein, ByteBuffer datain, int widthout, int heightout, 
+          int typeout, ByteBuffer dataout ) {
+    int datainPos = datain.position();
+    int dataoutPos = dataout.position();
+    try {
+
+      int components;
+      ByteBuffer beforeimage;
+      ByteBuffer afterimage;
+      PixelStorageModes psm = new PixelStorageModes();
+    
+      if( (widthin == 0)  || (heightin == 0) || (widthout == 0) || (heightout == 0) ) {
+        return( 0 );
+      }
+      if( (widthin < 0) || (heightin < 0) || (widthout < 0) || (heightout < 0) ) {
+        return( GLU.GLU_INVALID_VALUE );
+      }
+      if( !legalFormat( format ) || !legalType( typein ) || !legalType( typeout ) ) {
+        return( GLU.GLU_INVALID_ENUM );
+      }
+      if( !isLegalFormatForPackedPixelType( format, typein ) ) {
+        return( GLU.GLU_INVALID_OPERATION );
+      }
+      if( !isLegalFormatForPackedPixelType( format, typeout ) ) {
+        return( GLU.GLU_INVALID_OPERATION );
+      }
+      beforeimage = ByteBuffer.allocateDirect( image_size( widthin, heightin, format, GL2.GL_UNSIGNED_SHORT ) ).order( ByteOrder.nativeOrder() );
+      afterimage = ByteBuffer.allocateDirect( image_size( widthout, heightout, format, GL2.GL_UNSIGNED_SHORT ) ).order( ByteOrder.nativeOrder() );
+      if( beforeimage == null || afterimage == null ) {
+        return( GLU.GLU_OUT_OF_MEMORY );
+      }
+    
+      retrieveStoreModes( gl, psm );
+      Image.fill_image( psm, widthin, heightin, format, typein, is_index( format ), datain, beforeimage.asShortBuffer() );
+      components = elements_per_group( format, 0 );
+      ScaleInternal.scale_internal( components, widthin, heightin, beforeimage.asShortBuffer(), widthout, heightout, afterimage.asShortBuffer() );
+      Image.empty_image( psm, widthout, heightout, format, typeout, is_index( format ), afterimage.asShortBuffer(), dataout );
+    
+      return( 0 );
+    } finally {
+      datain.position(datainPos);
+      dataout.position(dataoutPos);
+    }
+  }
+  
+  public static int gluBuild1DMipmapLevels( GL gl, int target, int internalFormat,
+                          int width, int format, int type, int userLevel, int baseLevel,
+                          int maxLevel, ByteBuffer data ) {
+    int dataPos = data.position();
+    try {
+
+      int levels;
+    
+      int rc = checkMipmapArgs( internalFormat, format, type );
+      if( rc != 0 ) {
+        return( rc );
+      }
+    
+      if( width < 1 ) {
+        return( GLU.GLU_INVALID_VALUE );
+      }
+    
+      levels = computeLog( width );
+    
+      levels += userLevel;
+      if( !isLegalLevels( userLevel, baseLevel, maxLevel, levels ) ) {
+        return( GLU.GLU_INVALID_VALUE );
+      }
+    
+      return( BuildMipmap.gluBuild1DMipmapLevelsCore( gl, target, internalFormat, width,
+              width, format, type, userLevel, baseLevel, maxLevel, data ) );
+    } finally {
+      data.position(dataPos);
+    }
+  }
+  
+  public static int gluBuild1DMipmaps( GL gl, int target, int internalFormat, int width,
+              int format, int type, ByteBuffer data ) {
+    int dataPos = data.position();
+
+    try {
+      int[] widthPowerOf2 = new int[1];
+      int levels;
+      int[] dummy = new int[1];
+    
+      int rc = checkMipmapArgs( internalFormat, format, type );
+      if( rc != 0 ) {
+        return( rc );
+      }
+    
+      if( width < 1 ) {
+        return( GLU.GLU_INVALID_VALUE );
+      }
+    
+      closestFit( gl, target, width, 1, internalFormat, format, type, widthPowerOf2, dummy );
+      levels = computeLog( widthPowerOf2[0] );
+    
+      return( BuildMipmap.gluBuild1DMipmapLevelsCore( gl, target, internalFormat, 
+                    width, widthPowerOf2[0], format, type, 0, 0, levels, data ) );
+    } finally {
+      data.position(dataPos);
+    }
+  }
+
+ 
+  public static int gluBuild2DMipmapLevels( GL gl, int target, int internalFormat,
+          int width, int height, int format, int type, int userLevel,
+          int baseLevel, int maxLevel, Object data ) {
+    int dataPos = 0;
+
+    int level, levels;
+    
+    int rc = checkMipmapArgs( internalFormat, format, type );
+    if( rc != 0 ) {
+      return( rc );
+    }
+    
+    if( width < 1 || height < 1 ) {
+      return( GLU.GLU_INVALID_VALUE );
+    }
+    
+    levels = computeLog( width );
+    level = computeLog( height );
+    if( level > levels ) {
+      levels = level;
+    }
+    
+    levels += userLevel;
+    if( !isLegalLevels( userLevel, baseLevel, maxLevel, levels ) ) {
+      return( GLU.GLU_INVALID_VALUE );
+    }
+    
+    //PointerWrapper pointer = PointerWrapperFactory.getPointerWrapper( data );
+    ByteBuffer buffer = null;
+    if( data instanceof ByteBuffer ) {
+        buffer = (ByteBuffer)data;
+        dataPos = buffer.position();
+    } else if( data instanceof byte[] ) {
+      byte[] array = (byte[])data;
+      buffer = ByteBuffer.allocateDirect(array.length);
+      buffer.put(array);
+    } else if( data instanceof short[] ) {
+        short[] array = (short[])data;
+        buffer = ByteBuffer.allocateDirect( array.length * 2 );
+        ShortBuffer sb = buffer.asShortBuffer();
+        sb.put( array );
+    } else if( data instanceof int[] ) {
+        int[] array = (int[])data;
+        buffer = ByteBuffer.allocateDirect( array.length * 4 );
+        IntBuffer ib = buffer.asIntBuffer();
+        ib.put( array );
+    } else if( data instanceof float[] ) {
+        float[] array = (float[])data;
+        buffer = ByteBuffer.allocateDirect( array.length * 4 );
+        FloatBuffer fb = buffer.asFloatBuffer();
+        fb.put( array );
+    }
+    
+    try {
+      return( BuildMipmap.gluBuild2DMipmapLevelsCore( gl, target, internalFormat,
+              width, height, width, height, format, type, userLevel, baseLevel,
+              maxLevel, buffer ) );
+    } finally {
+      buffer.position(dataPos);
+    }
+  }
+
+ 
+  public static int gluBuild2DMipmaps( GL gl, int target, int internalFormat,
+          int width, int height, int format, int type, Object data ) {
+    int dataPos = 0;
+
+    int[] widthPowerOf2 = new int[1];
+    int[] heightPowerOf2 = new int[1];
+    int level, levels;
+    
+    int rc = checkMipmapArgs( internalFormat, format, type );
+    if( rc != 0 ) {
+      return( rc );
+    }
+    
+    if( width < 1 || height < 1 ) {
+      return( GLU.GLU_INVALID_VALUE );
+    }
+    
+    closestFit( gl, target, width, height, internalFormat, format, type, 
+            widthPowerOf2, heightPowerOf2 );
+    
+    levels = computeLog( widthPowerOf2[0] );
+    level = computeLog( heightPowerOf2[0] );
+    if( level > levels ) {
+      levels = level;
+    }
+    
+    //PointerWrapper pointer = PointerWrapperFactory.getPointerWrapper( data );
+    ByteBuffer buffer = null;
+    if( data instanceof ByteBuffer ) {
+        buffer = (ByteBuffer)data;
+        dataPos = buffer.position();
+    } else if( data instanceof byte[] ) {
+      byte[] array = (byte[])data;
+      buffer = ByteBuffer.allocateDirect(array.length);
+      buffer.put(array);
+    } else if( data instanceof short[] ) {
+        short[] array = (short[])data;
+        buffer = ByteBuffer.allocateDirect( array.length * 2 );
+        ShortBuffer sb = buffer.asShortBuffer();
+        sb.put( array );
+    } else if( data instanceof int[] ) {
+        int[] array = (int[])data;
+        buffer = ByteBuffer.allocateDirect( array.length * 4 );
+        IntBuffer ib = buffer.asIntBuffer();
+        ib.put( array );
+    } else if( data instanceof float[] ) {
+        float[] array = (float[])data;
+        buffer = ByteBuffer.allocateDirect( array.length * 4 );
+        FloatBuffer fb = buffer.asFloatBuffer();
+        fb.put( array );
+    }
+    
+    try {
+      return( BuildMipmap.gluBuild2DMipmapLevelsCore( gl, target, internalFormat, 
+              width, height, widthPowerOf2[0], heightPowerOf2[0], format, type, 0, 
+              0, levels, buffer ) );
+    } finally {
+      buffer.position(dataPos);
+    }
+  }
+ 
+ 
+  public static int gluBuild3DMipmaps( GL gl, int target, int internalFormat,
+          int width, int height, int depth, int format, int type, ByteBuffer data ) {
+    int dataPos = data.position();
+    try {
+
+      int[] widthPowerOf2 = new int[1];
+      int[] heightPowerOf2 = new int[1];
+      int[] depthPowerOf2 = new int[1];
+      int level, levels;
+    
+      int rc = checkMipmapArgs( internalFormat, format, type );
+      if( rc != 0 ) {
+        return( rc );
+      }
+    
+      if( width < 1 || height < 1 || depth < 1 ) {
+        return( GLU.GLU_INVALID_VALUE );
+      }
+    
+      if( type == GL2.GL_BITMAP ) {
+        return( GLU.GLU_INVALID_ENUM );
+      }
+    
+      closestFit3D( gl, target, width, height, depth, internalFormat, format,
+                    type, widthPowerOf2, heightPowerOf2, depthPowerOf2 );
+    
+      levels = computeLog( widthPowerOf2[0] );
+      level = computeLog( heightPowerOf2[0] );
+      if( level > levels ) {
+        levels = level;
+      }
+      level = computeLog( depthPowerOf2[0] );
+      if( level > levels ) {
+        levels = level;
+      }
+    
+      return( BuildMipmap.gluBuild3DMipmapLevelsCore( gl, target, internalFormat, width,
+              height, depth, widthPowerOf2[0], heightPowerOf2[0], depthPowerOf2[0],
+              format, type, 0, 0, levels, data ) );
+    } finally {
+      data.position(dataPos);
+    }
+  }
+  
+  public static int gluBuild3DMipmapLevels( GL gl, int target, int internalFormat,
+          int width, int height, int depth, int format, int type, int userLevel,
+          int baseLevel, int maxLevel, ByteBuffer data ) {
+    int dataPos = data.position();
+    try {
+      int level, levels;
+    
+      int rc = checkMipmapArgs( internalFormat, format, type );
+      if( rc != 0 ) {
+        return( rc );
+      }
+    
+      if( width < 1 || height < 1 || depth < 1 ) {
+        return( GLU.GLU_INVALID_VALUE );
+      }
+    
+      if( type == GL2.GL_BITMAP ) {
+        return( GLU.GLU_INVALID_ENUM );
+      }
+    
+      levels = computeLog( width );
+      level = computeLog( height );
+      if( level > levels ) {
+        levels = level;
+      }
+      level = computeLog( depth );
+      if( level > levels ) {
+        levels = level;
+      }
+    
+      levels += userLevel;
+      if( !isLegalLevels( userLevel, baseLevel, maxLevel, levels ) ) {
+        return( GLU.GLU_INVALID_VALUE );
+      }
+    
+      return( BuildMipmap.gluBuild3DMipmapLevelsCore( gl, target, internalFormat, width,
+              height, depth, width, height, depth, format, type, userLevel,
+              baseLevel, maxLevel, data ) );
+    } finally {
+      data.position(dataPos);
+    }
+  }
+}