471 lines
11 KiB
C
471 lines
11 KiB
C
/* $NetBSD: rasops15.c,v 1.8 2000/06/13 13:36:56 ad Exp $ */
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/*-
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* Copyright (c) 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Andrew Doran.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "opt_rasops.h"
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: rasops15.c,v 1.8 2000/06/13 13:36:56 ad Exp $");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/time.h>
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#include <dev/wscons/wsdisplayvar.h>
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#include <dev/wscons/wsconsio.h>
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#include <dev/rasops/rasops.h>
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static void rasops15_putchar __P((void *, int, int, u_int, long attr));
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#ifndef RASOPS_SMALL
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static void rasops15_putchar8 __P((void *, int, int, u_int, long attr));
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static void rasops15_putchar12 __P((void *, int, int, u_int, long attr));
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static void rasops15_putchar16 __P((void *, int, int, u_int, long attr));
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static void rasops15_makestamp __P((struct rasops_info *, long));
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#endif
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/*
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* (2x2)x1 stamp for optimized character blitting
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*/
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static int32_t stamp[32];
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static long stamp_attr;
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static int stamp_mutex; /* XXX see note in readme */
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/*
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* XXX this confuses the hell out of gcc2 (not egcs) which always insists
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* that the shift count is negative.
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*
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* offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK
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* destination int32_t[0] = STAMP_READ(offset)
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* destination int32_t[1] = STAMP_READ(offset + 4)
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*/
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#define STAMP_SHIFT(fb,n) ((n*4-3) >= 0 ? (fb)>>(n*4-3):(fb)<<-(n*4-3))
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#define STAMP_MASK (15 << 3)
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#define STAMP_READ(o) (*(int32_t *)((caddr_t)stamp + (o)))
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/*
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* Initalize rasops_info struct for this colordepth.
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*/
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void
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rasops15_init(ri)
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struct rasops_info *ri;
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{
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switch (ri->ri_font->fontwidth) {
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#ifndef RASOPS_SMALL
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case 8:
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ri->ri_ops.putchar = rasops15_putchar8;
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break;
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case 12:
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ri->ri_ops.putchar = rasops15_putchar12;
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break;
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case 16:
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ri->ri_ops.putchar = rasops15_putchar16;
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break;
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#endif /* !RASOPS_SMALL */
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default:
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ri->ri_ops.putchar = rasops15_putchar;
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break;
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}
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if (ri->ri_rnum == 0) {
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ri->ri_rnum = 5;
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ri->ri_rpos = 0;
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ri->ri_gnum = 5 + (ri->ri_depth == 16);
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ri->ri_gpos = 5;
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ri->ri_bnum = 5;
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ri->ri_bpos = 10 + (ri->ri_depth == 16);
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}
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}
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/*
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* Paint a single character.
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*/
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static void
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rasops15_putchar(cookie, row, col, uc, attr)
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void *cookie;
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int row, col;
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u_int uc;
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long attr;
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{
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int fb, width, height, cnt, clr[2];
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struct rasops_info *ri;
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u_char *dp, *rp, *fr;
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ri = (struct rasops_info *)cookie;
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#ifdef RASOPS_CLIPPING
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/* Catches 'row < 0' case too */
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if ((unsigned)row >= (unsigned)ri->ri_rows)
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return;
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if ((unsigned)col >= (unsigned)ri->ri_cols)
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return;
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#endif
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rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale;
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height = ri->ri_font->fontheight;
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width = ri->ri_font->fontwidth;
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clr[1] = ri->ri_devcmap[((u_int)attr >> 24) & 0xf];
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clr[0] = ri->ri_devcmap[((u_int)attr >> 16) & 0xf];
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if (uc == ' ') {
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int16_t c = (int16_t)clr[0];
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while (height--) {
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dp = rp;
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rp += ri->ri_stride;
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for (cnt = width; cnt; cnt--) {
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*(int16_t *)dp = c;
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dp += 2;
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}
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}
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} else {
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uc -= ri->ri_font->firstchar;
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fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
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while (height--) {
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dp = rp;
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fb = fr[3] | (fr[2] << 8) | (fr[1] << 16) | (fr[0] << 24);
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fr += ri->ri_font->stride;
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rp += ri->ri_stride;
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for (cnt = width; cnt; cnt--) {
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*(int16_t *)dp = (int16_t)clr[(fb >> 31) & 1];
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fb <<= 1;
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dp += 2;
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}
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}
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}
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/* Do underline */
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if ((attr & 1) != 0) {
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int16_t c = (int16_t)clr[1];
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rp -= ri->ri_stride << 1;
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while (width--) {
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*(int16_t *)rp = c;
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rp += 2;
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}
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}
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}
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#ifndef RASOPS_SMALL
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/*
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* Recompute the (2x2)x1 blitting stamp.
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*/
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static void
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rasops15_makestamp(ri, attr)
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struct rasops_info *ri;
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long attr;
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{
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int32_t fg, bg;
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int i;
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fg = ri->ri_devcmap[((u_int)attr >> 24) & 0xf] & 0xffff;
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bg = ri->ri_devcmap[((u_int)attr >> 16) & 0xf] & 0xffff;
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stamp_attr = attr;
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for (i = 0; i < 32; i += 2) {
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#if BYTE_ORDER == LITTLE_ENDIAN
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stamp[i] = (i & 16 ? fg : bg);
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stamp[i] |= ((i & 8 ? fg : bg) << 16);
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stamp[i + 1] = (i & 4 ? fg : bg);
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stamp[i + 1] |= ((i & 2 ? fg : bg) << 16);
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#else
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stamp[i] = (i & 2 ? fg : bg);
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stamp[i] |= ((i & 4 ? fg : bg) << 16);
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stamp[i + 1] = (i & 8 ? fg : bg);
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stamp[i + 1] |= ((i & 16 ? fg : bg) << 16);
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#endif
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}
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}
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/*
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* Paint a single character. This is for 8-pixel wide fonts.
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*/
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static void
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rasops15_putchar8(cookie, row, col, uc, attr)
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void *cookie;
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int row, col;
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u_int uc;
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long attr;
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{
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struct rasops_info *ri;
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int height, so, fs;
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int32_t *rp;
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u_char *fr;
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/* Can't risk remaking the stamp if it's already in use */
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if (stamp_mutex++) {
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stamp_mutex--;
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rasops15_putchar(cookie, row, col, uc, attr);
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return;
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}
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ri = (struct rasops_info *)cookie;
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#ifdef RASOPS_CLIPPING
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if ((unsigned)row >= (unsigned)ri->ri_rows) {
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stamp_mutex--;
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return;
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}
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if ((unsigned)col >= (unsigned)ri->ri_cols) {
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stamp_mutex--;
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return;
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}
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#endif
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/* Recompute stamp? */
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if (attr != stamp_attr)
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rasops15_makestamp(ri, attr);
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rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
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height = ri->ri_font->fontheight;
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if (uc == (u_int)-1) {
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int32_t c = stamp[0];
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while (height--) {
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rp[0] = rp[1] = rp[2] = rp[3] = c;
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DELTA(rp, ri->ri_stride, int32_t *);
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}
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} else {
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uc -= ri->ri_font->firstchar;
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fr = (u_char *)ri->ri_font->data + uc*ri->ri_fontscale;
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fs = ri->ri_font->stride;
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while (height--) {
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so = STAMP_SHIFT(fr[0], 1) & STAMP_MASK;
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rp[0] = STAMP_READ(so);
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rp[1] = STAMP_READ(so + 4);
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so = STAMP_SHIFT(fr[0], 0) & STAMP_MASK;
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rp[2] = STAMP_READ(so);
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rp[3] = STAMP_READ(so + 4);
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fr += fs;
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DELTA(rp, ri->ri_stride, int32_t *);
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}
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}
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/* Do underline */
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if ((attr & 1) != 0) {
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int32_t c = STAMP_READ(28);
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DELTA(rp, -(ri->ri_stride << 1), int32_t *);
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rp[0] = rp[1] = rp[2] = rp[3] = c;
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}
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stamp_mutex--;
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}
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/*
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* Paint a single character. This is for 12-pixel wide fonts.
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*/
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static void
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rasops15_putchar12(cookie, row, col, uc, attr)
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void *cookie;
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int row, col;
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u_int uc;
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long attr;
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{
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struct rasops_info *ri;
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int height, so, fs;
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int32_t *rp;
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u_char *fr;
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/* Can't risk remaking the stamp if it's already in use */
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if (stamp_mutex++) {
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stamp_mutex--;
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rasops15_putchar(cookie, row, col, uc, attr);
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return;
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}
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ri = (struct rasops_info *)cookie;
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#ifdef RASOPS_CLIPPING
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if ((unsigned)row >= (unsigned)ri->ri_rows) {
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stamp_mutex--;
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return;
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}
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if ((unsigned)col >= (unsigned)ri->ri_cols) {
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stamp_mutex--;
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return;
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}
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#endif
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/* Recompute stamp? */
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if (attr != stamp_attr)
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rasops15_makestamp(ri, attr);
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rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
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height = ri->ri_font->fontheight;
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if (uc == (u_int)-1) {
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int32_t c = stamp[0];
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while (height--) {
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rp[0] = rp[1] = rp[2] = rp[3] = rp[4] = rp[5] = c;
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DELTA(rp, ri->ri_stride, int32_t *);
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}
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} else {
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uc -= ri->ri_font->firstchar;
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fr = (u_char *)ri->ri_font->data + uc*ri->ri_fontscale;
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fs = ri->ri_font->stride;
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while (height--) {
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so = STAMP_SHIFT(fr[0], 1) & STAMP_MASK;
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rp[0] = STAMP_READ(so);
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rp[1] = STAMP_READ(so + 4);
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so = STAMP_SHIFT(fr[0], 0) & STAMP_MASK;
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rp[2] = STAMP_READ(so);
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rp[3] = STAMP_READ(so + 4);
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so = STAMP_SHIFT(fr[1], 1) & STAMP_MASK;
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rp[4] = STAMP_READ(so);
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rp[5] = STAMP_READ(so + 4);
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fr += fs;
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DELTA(rp, ri->ri_stride, int32_t *);
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}
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}
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/* Do underline */
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if (attr & 1) {
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int32_t c = STAMP_READ(28);
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DELTA(rp, -(ri->ri_stride << 1), int32_t *);
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rp[0] = rp[1] = rp[2] = rp[3] = rp[4] = rp[5] = c;
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}
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stamp_mutex--;
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}
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/*
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* Paint a single character. This is for 16-pixel wide fonts.
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*/
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static void
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rasops15_putchar16(cookie, row, col, uc, attr)
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void *cookie;
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int row, col;
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u_int uc;
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long attr;
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{
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struct rasops_info *ri;
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int height, so, fs;
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int32_t *rp;
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u_char *fr;
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/* Can't risk remaking the stamp if it's already in use */
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if (stamp_mutex++) {
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stamp_mutex--;
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rasops15_putchar(cookie, row, col, uc, attr);
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return;
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}
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ri = (struct rasops_info *)cookie;
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#ifdef RASOPS_CLIPPING
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if ((unsigned)row >= (unsigned)ri->ri_rows) {
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stamp_mutex--;
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return;
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}
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if ((unsigned)col >= (unsigned)ri->ri_cols) {
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stamp_mutex--;
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return;
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}
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#endif
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/* Recompute stamp? */
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if (attr != stamp_attr)
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rasops15_makestamp(ri, attr);
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rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
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height = ri->ri_font->fontheight;
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if (uc == (u_int)-1) {
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int32_t c = stamp[0];
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while (height--) {
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rp[0] = rp[1] = rp[2] = rp[3] =
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rp[4] = rp[5] = rp[6] = rp[7] = c;
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DELTA(rp, ri->ri_stride, int32_t *);
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}
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} else {
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uc -= ri->ri_font->firstchar;
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fr = (u_char *)ri->ri_font->data + uc*ri->ri_fontscale;
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fs = ri->ri_font->stride;
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while (height--) {
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so = STAMP_SHIFT(fr[0], 1) & STAMP_MASK;
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rp[0] = STAMP_READ(so);
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rp[1] = STAMP_READ(so + 4);
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so = STAMP_SHIFT(fr[0], 0) & STAMP_MASK;
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rp[2] = STAMP_READ(so);
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rp[3] = STAMP_READ(so + 4);
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so = STAMP_SHIFT(fr[1], 1) & STAMP_MASK;
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rp[4] = STAMP_READ(so);
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rp[5] = STAMP_READ(so + 4);
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so = STAMP_SHIFT(fr[1], 0) & STAMP_MASK;
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rp[6] = STAMP_READ(so);
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rp[7] = STAMP_READ(so + 4);
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DELTA(rp, ri->ri_stride, int32_t *);
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fr += fs;
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}
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}
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/* Do underline */
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if (attr & 1) {
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int32_t c = STAMP_READ(28);
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DELTA(rp, -(ri->ri_stride << 1), int32_t *);
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rp[0] = rp[1] = rp[2] = rp[3] =
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rp[4] = rp[5] = rp[6] = rp[7] = c;
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}
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stamp_mutex--;
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}
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#endif /* !RASOPS_SMALL */
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