diff options
Diffstat (limited to 'nx-X11/programs/Xserver/hw/sunLynx/btvar.h')
| -rw-r--r-- | nx-X11/programs/Xserver/hw/sunLynx/btvar.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/hw/sunLynx/btvar.h b/nx-X11/programs/Xserver/hw/sunLynx/btvar.h new file mode 100644 index 000000000..054df6f87 --- /dev/null +++ b/nx-X11/programs/Xserver/hw/sunLynx/btvar.h @@ -0,0 +1,74 @@ +/* $Xorg: btvar.h,v 1.3 2000/08/17 19:48:36 cpqbld Exp $ */ +/* + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * + * This software was developed by the Computer Systems Engineering group + * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and + * contributed to Berkeley. + * + * All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Lawrence Berkeley Laboratory. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)btvar.h 8.2 (Berkeley) 1/21/94 + */ +/* $NetBSD: btvar.h,v 1.2 1994/11/20 20:51:56 deraadt Exp $ */ +/* $XFree86: xc/programs/Xserver/hw/sunLynx/btvar.h,v 3.1 1996/12/27 06:51:32 dawes Exp $ */ + +/* + * Brooktree color frame buffer state variables (see btreg.h). + * + * Unfortunately, remarkably little code can be shared between the + * cg3 and cg6 drivers here, as the cg3 registers do longword-ops + * `as expected', but the cg6 ones use only the upper byte. + * + * Still, the software color map manipulation is not completely trivial. + */ +union bt_cmap { + u_char cm_map[256][3]; /* 256 R/G/B entries */ + u_int cm_chip[256 * 3 / 4]; /* the way the chip gets loaded */ +}; + +/* + * Routines in bt_subr.c. + */ +int bt_getcmap __P((struct fbcmap *, union bt_cmap *, int)); +int bt_putcmap __P((struct fbcmap *, union bt_cmap *, int)); + +/* + * Compute (x / 4) * 3 and (x / 4) * 4. These are used in turning + * RGB indices (which are in multiples of three) into `chip RGB' values + * (which are in multiples of four). + */ +#define BT_D4M3(x) ((((x) >> 2) << 1) + ((x) >> 2)) /* (x / 4) * 3 */ +#define BT_D4M4(x) ((x) & ~3) /* (x / 4) * 4 */ |