| J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1996 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | /* |
| 27 | * This file contains macro definitions for the Encoding category of |
| 28 | * the macros used by the generic scaleloop function. |
| 29 | * |
| 30 | * This implementation can encode the color information into the |
| 31 | * output pixels directly by using shift and scale amounts to |
| 32 | * specify which bits of the output pixel should contain the red, |
| 33 | * green, and blue components. The scale factors are only needed |
| 34 | * if some of the color components in the output pixels hold less |
| 35 | * than 8-bits of information. |
| 36 | * |
| 37 | * This file can be used to provide the default implementation of the |
| 38 | * Encoding macros for direct pixel type displays with any size up to |
| 39 | * 8-bits of color information per component. |
| 40 | */ |
| 41 | |
| 42 | #define DeclareDitherVars \ |
| 43 | int red_dither_shift, green_dither_shift, blue_dither_shift; \ |
| 44 | int red_dither_scale, green_dither_scale, blue_dither_scale; |
| 45 | |
| 46 | #define InitDither(cvdata, clrdata, dstTW) \ |
| 47 | do { \ |
| 48 | red_dither_shift = clrdata->rOff; \ |
| 49 | green_dither_shift = clrdata->gOff; \ |
| 50 | blue_dither_shift = clrdata->bOff; \ |
| 51 | red_dither_scale = clrdata->rScale; \ |
| 52 | green_dither_scale = clrdata->gScale; \ |
| 53 | blue_dither_scale = clrdata->bScale; \ |
| 54 | } while (0) |
| 55 | |
| 56 | #define StartDitherLine(cvdata, dstX1, dstY) \ |
| 57 | do {} while (0) |
| 58 | |
| 59 | #define DitherPixel(dstX, dstY, pixel, red, green, blue) \ |
| 60 | do { \ |
| 61 | pixel = (((red >> red_dither_scale) \ |
| 62 | << red_dither_shift) | \ |
| 63 | ((green >> green_dither_scale) \ |
| 64 | << green_dither_shift) | \ |
| 65 | ((blue >> blue_dither_scale) \ |
| 66 | << blue_dither_shift)); \ |
| 67 | } while (0) |
| 68 | |
| 69 | #define DitherBufComplete(cvdata, dstX1) \ |
| 70 | do {} while (0) |