This commit was manufactured by cvs2svn to create branch 'JSR-231'.

git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/branches/JSR-231@244 232f8b59-042b-4e1e-8c03-345bb8c30851

1 files changed, 74 insertions, 0 deletions

diff --git a/src/net/java/games/jogl/impl/mipmap/Extract332.java b/src/net/java/games/jogl/impl/mipmap/Extract332.java
new file mode 100644
index 000000000..6a3bcdc0a
--- /dev/null
+++ b/src/net/java/games/jogl/impl/mipmap/Extract332.java
@@ -0,0 +1,74 @@
+/*
+ * 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.
+ * 
+ * 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 net.java.games.jogl.impl.mipmap;
+
+import java.nio.ByteBuffer;
+
+/**
+ *
+ * @author Administrator
+ */
+public class Extract332 implements Extract {
+  
+  /** Creates a new instance of Extract332 */
+  public Extract332() {
+  }
+  
+  public void extract( boolean isSwap, ByteBuffer packedPixel, float[] extractComponents ) {
+    // 11100000 == 0xe0
+    // 00011100 == 0x1c
+    // 00000011 == 0x03
+    byte ubyte = packedPixel.get();
+    extractComponents[0] = (float)((ubyte & 0xe0) >> 5) / 7.0f;
+    extractComponents[1] = (float)((ubyte & 0x1c) >> 2) / 7.0f;
+    extractComponents[2] = (float)((ubyte & 0x03)) / 3.0f;
+  }
+  
+  public void shove( float[] shoveComponents, int index, ByteBuffer packedPixel ) {
+    // 11100000 == 0xE0
+    // 00011100 == 0x1C
+    // 00000011 == 0x03
+    
+    assert( 0.0f <= shoveComponents[0] && shoveComponents[0] <= 1.0f );
+    assert( 0.0f <= shoveComponents[1] && shoveComponents[1] <= 1.0f );
+    assert( 0.0f <= shoveComponents[2] && shoveComponents[2] <= 1.0f );
+    
+    // due to limited precision, need to round before shoving
+    byte b = (byte)( ( (int)( ( shoveComponents[0] * 7 ) + 0.5f ) << 5 ) & 0xE0 );
+    b |= (byte)( ( (int)( ( shoveComponents[1] * 7 ) + 0.5f ) << 2 ) & 0x1C );
+    b |= (byte)( ( (int)( ( shoveComponents[2] * 3 ) + 0.5f ) ) & 0x03 );
+    packedPixel.put( index, b );
+  }
+}