From f9773698c3950b758d591ef5e9cb9210d0f491dd Mon Sep 17 00:00:00 2001 From: Sven Gothel Date: Thu, 26 Jun 2008 00:41:20 +0000 Subject: 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 --- .../sun/opengl/impl/glu/mipmap/Extract4444.java | 96 ++++++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 src/classes/com/sun/opengl/impl/glu/mipmap/Extract4444.java (limited to 'src/classes/com/sun/opengl/impl/glu/mipmap/Extract4444.java') 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 ); + } +} -- cgit v1.2.3