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authorSven Gothel <[email protected]>2008-06-26 00:41:20 +0000
committerSven Gothel <[email protected]>2008-06-26 00:41:20 +0000
commitf9773698c3950b758d591ef5e9cb9210d0f491dd (patch)
tree8192795da85ef5c056d2584f90cad9c22be0ab51 /src/classes/com/sun/opengl/impl/glu/mipmap/Extract4444.java
parent5f290cb6abe9dc29490d61502adfc550d55af761 (diff)
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
Diffstat (limited to 'src/classes/com/sun/opengl/impl/glu/mipmap/Extract4444.java')
-rw-r--r--src/classes/com/sun/opengl/impl/glu/mipmap/Extract4444.java96
1 files changed, 96 insertions, 0 deletions
diff --git a/src/classes/com/sun/opengl/impl/glu/mipmap/Extract4444.java b/src/classes/com/sun/opengl/impl/glu/mipmap/Extract4444.java
new file mode 100644
index 000000000..b7414b184
--- /dev/null
+++ b/src/classes/com/sun/opengl/impl/glu/mipmap/Extract4444.java
@@ -0,0 +1,96 @@
+/*
+ * 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 java.nio.*;
+
+/**
+ *
+ * @author Administrator
+ */
+public class Extract4444 implements Extract {
+
+ /** Creates a new instance of Extract4444 */
+ public Extract4444() {
+ }
+
+ public void extract( boolean isSwap, ByteBuffer packedPixel, float[] extractComponents ) {
+ int ushort = 0;
+
+ if( isSwap ) {
+ ushort = 0x0000FFFF & Mipmap.GLU_SWAP_2_BYTES( packedPixel.getShort() );
+ } else {
+ ushort = 0x0000FFFF & packedPixel.getShort();
+ }
+
+ // 11110000,00000000 == 0xF000
+ // 00001111,00000000 == 0x0F00
+ // 00000000,11110000 == 0x00F0
+ // 00000000,00001111 == 0x000F
+
+ extractComponents[0] = (float)( ( ushort & 0xF000 ) >> 12 ) / 15.0f;
+ extractComponents[1] = (float)( ( ushort & 0x0F00 ) >> 8 ) / 15.0f;
+ extractComponents[2] = (float)( ( ushort & 0x00F0 ) >> 4 ) / 15.0f;
+ extractComponents[3] = (float)( ( ushort & 0x000F ) ) / 15.0f;
+ }
+
+ public void shove( float[] shoveComponents, int index, ByteBuffer packedPixel ) {
+ // 11110000,00000000 == 0xF000
+ // 00001111,00000000 == 0x0F00
+ // 00000000,11110000 == 0x00F0
+ // 00000000,00001111 == 0x000F
+
+ 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
+ int ushort = (((int)((shoveComponents[0] * 15) + 0.5f) << 12) & 0x0000F000 );
+ ushort |= (((int)((shoveComponents[1] * 15) + 0.5f) << 8) & 0x00000F00 );
+ ushort |= (((int)((shoveComponents[2] * 15) + 0.5f) << 4) & 0x000000F0 );
+ ushort |= (((int)((shoveComponents[3] * 15) + 0.5f) ) & 0x0000000F );
+ packedPixel.asShortBuffer().put( index, (short)ushort );
+ }
+}