diff options
Diffstat (limited to 'src/jogl/classes/jogamp/opengl/glu/mipmap/Extract4444rev.java')
| -rw-r--r-- | src/jogl/classes/jogamp/opengl/glu/mipmap/Extract4444rev.java | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/src/jogl/classes/jogamp/opengl/glu/mipmap/Extract4444rev.java b/src/jogl/classes/jogamp/opengl/glu/mipmap/Extract4444rev.java index e5bce60d8..b7a3ed55f 100644 --- a/src/jogl/classes/jogamp/opengl/glu/mipmap/Extract4444rev.java +++ b/src/jogl/classes/jogamp/opengl/glu/mipmap/Extract4444rev.java @@ -6,15 +6,15 @@ * 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 @@ -30,7 +30,7 @@ * 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 @@ -51,42 +51,42 @@ import java.nio.*; * @author Administrator */ public class Extract4444rev implements Extract { - + /** Creates a new instance of Extract4444rev */ public Extract4444rev() { } - + 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(); } - + // 00000000,00001111 == 0x000F // 00000000,11110000 == 0x00F0 // 00001111,00000000 == 0x0F00 // 11110000,00000000 == 0xF000 - + extractComponents[0] = (float)( ( ushort & 0x000F ) ) / 15.0f; extractComponents[1] = (float)( ( ushort & 0x00F0 ) >> 4 ) / 15.0f; extractComponents[2] = (float)( ( ushort & 0x0F00 ) >> 8 ) / 15.0f; extractComponents[3] = (float)( ( ushort & 0xF000 ) >> 12 ) / 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 ); assert( 0.0f <= shoveComponents[3] && shoveComponents[3] <= 1.0f ); - + // due to limited precision, need to round before shoving int ushort = (((int)((shoveComponents[0] * 15) + 0.5f) ) & 0x0000000F ); ushort |= (((int)((shoveComponents[1] * 15) + 0.5f) << 4) & 0x000000F0 ); |