474 lines
10 KiB
C
474 lines
10 KiB
C
/* $NetBSD: rasops2.c,v 1.1 1999/04/26 04:27:47 ad Exp $ */
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/*
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* Copyright (c) 1999 Andy Doran <ad@NetBSD.org>
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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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: rasops2.c,v 1.1 1999/04/26 04:27:47 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 <machine/endian.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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#include <dev/rasops/rasops_masks.h>
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static void rasops2_putchar __P((void *, int, int col, u_int, long));
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static void rasops2_putchar8 __P((void *, int, int col, u_int, long));
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static void rasops2_putchar12 __P((void *, int, int col, u_int, long));
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static void rasops2_putchar16 __P((void *, int, int col, u_int, long));
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static void rasops2_copycols __P((void *, int, int, int, int));
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static void rasops2_erasecols __P((void *, int, int, int, long));
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static void rasops2_do_cursor __P((struct rasops_info *));
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static void rasops2_makestamp __P((struct rasops_info *, long));
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void rasops2_init __P((struct rasops_info *ri));
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/*
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* 4x1 stamp for optimized character blitting
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*/
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static int8_t stamp[16];
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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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* Initialize rasops_info struct for this colordepth.
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*/
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void
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rasops2_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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case 8:
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ri->ri_ops.putchar = rasops2_putchar8;
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break;
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case 12:
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ri->ri_ops.putchar = rasops2_putchar12;
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break;
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case 16:
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ri->ri_ops.putchar = rasops2_putchar16;
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break;
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default:
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panic("fontwidth not 8/12/16 - fixme!");
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ri->ri_ops.putchar = rasops2_putchar;
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break;
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}
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if (ri->ri_font->fontwidth & 3) {
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ri->ri_ops.erasecols = rasops2_erasecols;
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ri->ri_ops.copycols = rasops2_copycols;
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ri->ri_do_cursor = rasops2_do_cursor;
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}
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}
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/*
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* Recompute the blitting stamp.
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*/
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static void
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rasops2_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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int i;
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int32_t fg, bg;
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fg = ri->ri_devcmap[(attr >> 24) & 15] & 3;
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bg = ri->ri_devcmap[(attr >> 16) & 15] & 3;
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stamp_attr = attr;
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for (i = 0; i < 16; i++) {
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stamp[i] = (i & 1 ? fg : bg);
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stamp[i] |= (i & 2 ? fg : bg) << 2;
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stamp[i] |= (i & 4 ? fg : bg) << 4;
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stamp[i] |= (i & 8 ? fg : bg) << 6;
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}
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}
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#if 0
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/*
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* Paint a single character. This is the generic version, this is ugly.
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*/
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static void
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rasops2_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 height, width, fs, rs, fb, bg, fg, lmask, rmask;
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struct rasops_info *ri;
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int32_t *rp;
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u_char *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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width = ri->ri_font->fontwidth << 1;
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height = ri->ri_font->fontheight;
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col *= width;
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rp = (int32_t *)(ri->ri_bits + row * ri->ri_yscale + ((col >> 3) & ~3));
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col = col & 31;
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rs = ri->ri_stride;
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bg = ri->ri_devcmap[(attr >> 16) & 15];
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fg = ri->ri_devcmap[(attr >> 24) & 15];
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/* If fg and bg match this becomes a space character */
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if (fg == bg || uc == ' ') {
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uc = (u_int)-1;
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fr = 0; /* shutup gcc */
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fs = 0; /* shutup gcc */
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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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}
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/* Single word, one mask */
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if ((col + width) <= 32) {
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rmask = rasops_pmask[col][width];
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lmask = ~rmask;
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if (uc == (u_int)-1) {
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bg &= rmask;
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while (height--) {
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*rp = (*rp & lmask) | bg;
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DELTA(rp, rs, int32_t *);
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}
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} else {
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while (height--) {
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/* get bits, mask */
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/* compose sl */
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/* mask sl */
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/* put word */
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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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DELTA(rp, -(ri->ri_stride << 1), int32_t *);
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*rp = (*rp & lmask) | (fg & rmask);
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}
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} else {
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lmask = ~rasops_lmask[col];
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rmask = ~rasops_rmask[(col + width) & 31];
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if (uc == (u_int)-1) {
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bg = bg & ~lmask;
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width = bg & ~rmask;
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while (height--) {
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rp[0] = (rp[0] & lmask) | bg;
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rp[1] = (rp[1] & rmask) | width;
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DELTA(rp, rs, int32_t *);
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}
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} else {
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width = 32 - col;
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/* NOT fontbits if bg is white */
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while (height--) {
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fb = ~(fr[3] | (fr[2] << 8) |
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(fr[1] << 16) | (fr[0] << 24));
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rp[0] = (rp[0] & lmask)
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| MBE((u_int)fb >> col);
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rp[1] = (rp[1] & rmask)
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| (MBE((u_int)fb << width) & ~rmask);
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fr += fs;
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DELTA(rp, rs, 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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DELTA(rp, -(ri->ri_stride << 1), int32_t *);
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rp[0] = (rp[0] & lmask) | (fg & ~lmask);
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rp[1] = (rp[1] & rmask) | (fg & ~rmask);
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}
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}
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}
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#endif
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/*
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* Put a single character. This is the generic version.
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*/
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static void
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rasops2_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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/* XXX punt */
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}
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/*
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* Put a single character. This is for 8-pixel wide fonts.
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*/
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static void
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rasops2_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, fs, rs;
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u_char *fr, *rp;
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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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rasops2_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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/* Catches 'row < 0' case too */
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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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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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rs = ri->ri_stride;
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/* Recompute stamp? */
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if (attr != stamp_attr)
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rasops2_makestamp(ri, attr);
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if (uc == ' ') {
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while (height--) {
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*(int16_t *)rp = stamp[0];
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rp += rs;
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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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rp[0] = stamp[(*fr >> 4) & 15];
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rp[1] = stamp[*fr & 15];
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fr += fs;
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rp += rs;
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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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*(int16_t *)(rp - (ri->ri_stride << 1)) = stamp[15];
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stamp_mutex--;
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}
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/*
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* Put a single character. This is for 12-pixel wide fonts.
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*/
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static void
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rasops2_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, fs, rs;
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u_char *fr, *rp;
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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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rasops2_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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/* Catches 'row < 0' case too */
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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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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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rs = ri->ri_stride;
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/* Recompute stamp? */
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if (attr != stamp_attr)
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rasops2_makestamp(ri, attr);
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if (uc == ' ') {
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while (height--) {
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rp[0] = stamp[0];
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rp[1] = stamp[0];
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rp[2] = stamp[0];
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rp += rs;
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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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rp[0] = stamp[(fr[0] >> 4) & 15];
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rp[1] = stamp[fr[0] & 15];
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rp[2] = stamp[(fr[1] >> 4) & 15];
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fr += fs;
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rp += rs;
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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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rp -= ri->ri_stride << 1;
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rp[0] = stamp[15];
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rp[1] = stamp[15];
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rp[2] = stamp[15];
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}
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stamp_mutex--;
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}
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/*
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* Put a single character. This is for 16-pixel wide fonts.
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*/
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static void
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rasops2_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, fs, rs;
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u_char *fr, *rp;
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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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rasops2_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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/* Catches 'row < 0' case too */
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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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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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rs = ri->ri_stride;
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/* Recompute stamp? */
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if (attr != stamp_attr)
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rasops2_makestamp(ri, attr);
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if (uc == ' ') {
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while (height--) {
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*(int32_t *)rp = stamp[0];
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rp += rs;
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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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rp[0] = stamp[(fr[0] >> 4) & 15];
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rp[1] = stamp[fr[0] & 15];
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rp[2] = stamp[(fr[1] >> 4) & 15];
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rp[3] = stamp[fr[1] & 15];
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fr += fs;
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rp += rs;
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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 *)(rp - (ri->ri_stride << 1)) = stamp[15];
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stamp_mutex--;
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}
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/*
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* Grab routines common to depths where (bpp < 8)
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*/
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#define NAME(ident) rasops2_##ident
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#define PIXEL_SHIFT 1
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#include <dev/rasops/rasops_bitops.h>
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