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-rw-r--r--sys/dev/rasops/rasops8.c420
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diff --git a/sys/dev/rasops/rasops8.c b/sys/dev/rasops/rasops8.c
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+/* $OpenBSD: rasops8.c,v 1.1 2001/03/18 04:32:45 nate Exp $ */
+/* $NetBSD: rasops8.c,v 1.8 2000/04/12 14:22:29 pk Exp $ */
+
+/*-
+ * Copyright (c) 1999 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Andrew Doran.
+ *
+ * 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 NetBSD
+ * Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+#include <sys/cdefs.h>
+//__KERNEL_RCSID(0, "$NetBSD: rasops8.c,v 1.8 2000/04/12 14:22:29 pk Exp $");
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/time.h>
+
+#include <dev/wscons/wsdisplayvar.h>
+#include <dev/wscons/wsconsio.h>
+#include <dev/rasops/rasops.h>
+
+static void rasops8_putchar __P((void *, int, int, u_int, long attr));
+#ifndef RASOPS_SMALL
+static void rasops8_putchar8 __P((void *, int, int, u_int, long attr));
+static void rasops8_putchar12 __P((void *, int, int, u_int, long attr));
+static void rasops8_putchar16 __P((void *, int, int, u_int, long attr));
+static void rasops8_makestamp __P((struct rasops_info *ri, long));
+#endif
+
+/*
+ * 4x1 stamp for optimized character blitting
+ */
+static int32_t stamp[16];
+static long stamp_attr;
+static int stamp_mutex; /* XXX see note in README */
+
+/*
+ * XXX this confuses the hell out of gcc2 (not egcs) which always insists
+ * that the shift count is negative.
+ *
+ * offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK
+ * destination = STAMP_READ(offset)
+ */
+#define STAMP_SHIFT(fb,n) ((n*4-2) >= 0 ? (fb)>>(n*4-2):(fb)<<-(n*4-2))
+#define STAMP_MASK (0xf << 2)
+#define STAMP_READ(o) (*(int32_t *)((caddr_t)stamp + (o)))
+
+/*
+ * Initalize a 'rasops_info' descriptor for this depth.
+ */
+void
+rasops8_init(ri)
+ struct rasops_info *ri;
+{
+
+ switch (ri->ri_font->fontwidth) {
+#ifndef RASOPS_SMALL
+ case 8:
+ ri->ri_ops.putchar = rasops8_putchar8;
+ break;
+ case 12:
+ ri->ri_ops.putchar = rasops8_putchar12;
+ break;
+ case 16:
+ ri->ri_ops.putchar = rasops8_putchar16;
+ break;
+#endif /* !RASOPS_SMALL */
+ default:
+ ri->ri_ops.putchar = rasops8_putchar;
+ break;
+ }
+}
+
+/*
+ * Put a single character.
+ */
+static void
+rasops8_putchar(cookie, row, col, uc, attr)
+ void *cookie;
+ int row, col;
+ u_int uc;
+ long attr;
+{
+ int width, height, cnt, fs, fb;
+ u_char *dp, *rp, *fr, clr[2];
+ struct rasops_info *ri;
+
+ ri = (struct rasops_info *)cookie;
+
+#ifdef RASOPS_CLIPPING
+ /* Catches 'row < 0' case too */
+ if ((unsigned)row >= (unsigned)ri->ri_rows)
+ return;
+
+ if ((unsigned)col >= (unsigned)ri->ri_cols)
+ return;
+#endif
+ rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale;
+
+ height = ri->ri_font->fontheight;
+ width = ri->ri_font->fontwidth;
+ clr[0] = (u_char)ri->ri_devcmap[(attr >> 16) & 0xf];
+ clr[1] = (u_char)ri->ri_devcmap[(attr >> 24) & 0xf];
+
+ if (uc == ' ') {
+ u_char c = clr[0];
+
+ while (height--) {
+ dp = rp;
+ rp += ri->ri_stride;
+
+ for (cnt = width; cnt; cnt--)
+ *dp++ = c;
+ }
+ } else {
+ uc -= ri->ri_font->firstchar;
+ fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
+ fs = ri->ri_font->stride;
+
+ while (height--) {
+ dp = rp;
+ fb = fr[3] | (fr[2] << 8) | (fr[1] << 16) | (fr[0] << 24);
+ fr += fs;
+ rp += ri->ri_stride;
+
+ for (cnt = width; cnt; cnt--) {
+ *dp++ = clr[(fb >> 31) & 1];
+ fb <<= 1;
+ }
+ }
+ }
+
+ /* Do underline */
+ if ((attr & 1) != 0) {
+ u_char c = clr[1];
+
+ rp -= (ri->ri_stride << 1);
+
+ while (width--)
+ *rp++ = c;
+ }
+}
+
+#ifndef RASOPS_SMALL
+/*
+ * Recompute the 4x1 blitting stamp.
+ */
+static void
+rasops8_makestamp(ri, attr)
+ struct rasops_info *ri;
+ long attr;
+{
+ int32_t fg, bg;
+ int i;
+
+ fg = ri->ri_devcmap[(attr >> 24) & 0xf] & 0xff;
+ bg = ri->ri_devcmap[(attr >> 16) & 0xf] & 0xff;
+ stamp_attr = attr;
+
+ for (i = 0; i < 16; i++) {
+#if BYTE_ORDER == LITTLE_ENDIAN
+ stamp[i] = (i & 8 ? fg : bg);
+ stamp[i] |= ((i & 4 ? fg : bg) << 8);
+ stamp[i] |= ((i & 2 ? fg : bg) << 16);
+ stamp[i] |= ((i & 1 ? fg : bg) << 24);
+#else
+ stamp[i] = (i & 1 ? fg : bg);
+ stamp[i] |= ((i & 2 ? fg : bg) << 8);
+ stamp[i] |= ((i & 4 ? fg : bg) << 16);
+ stamp[i] |= ((i & 8 ? fg : bg) << 24);
+#endif
+ }
+}
+
+/*
+ * Put a single character. This is for 8-pixel wide fonts.
+ */
+static void
+rasops8_putchar8(cookie, row, col, uc, attr)
+ void *cookie;
+ int row, col;
+ u_int uc;
+ long attr;
+{
+ struct rasops_info *ri;
+ int height, fs;
+ int32_t *rp;
+ u_char *fr;
+
+ /* Can't risk remaking the stamp if it's already in use */
+ if (stamp_mutex++) {
+ stamp_mutex--;
+ rasops8_putchar(cookie, row, col, uc, attr);
+ return;
+ }
+
+ ri = (struct rasops_info *)cookie;
+
+#ifdef RASOPS_CLIPPING
+ if ((unsigned)row >= (unsigned)ri->ri_rows) {
+ stamp_mutex--;
+ return;
+ }
+
+ if ((unsigned)col >= (unsigned)ri->ri_cols) {
+ stamp_mutex--;
+ return;
+ }
+#endif
+
+ /* Recompute stamp? */
+ if (attr != stamp_attr)
+ rasops8_makestamp(ri, attr);
+
+ rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
+ height = ri->ri_font->fontheight;
+
+ if (uc == ' ') {
+ while (height--) {
+ rp[0] = rp[1] = stamp[0];
+ DELTA(rp, ri->ri_stride, int32_t *);
+ }
+ } else {
+ uc -= ri->ri_font->firstchar;
+ fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
+ fs = ri->ri_font->stride;
+
+ while (height--) {
+ rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK);
+ rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK);
+
+ fr += fs;
+ DELTA(rp, ri->ri_stride, int32_t *);
+ }
+ }
+
+ /* Do underline */
+ if ((attr & 1) != 0) {
+ DELTA(rp, -(ri->ri_stride << 1), int32_t *);
+ rp[0] = rp[1] = stamp[15];
+ }
+
+ stamp_mutex--;
+}
+
+/*
+ * Put a single character. This is for 12-pixel wide fonts.
+ */
+static void
+rasops8_putchar12(cookie, row, col, uc, attr)
+ void *cookie;
+ int row, col;
+ u_int uc;
+ long attr;
+{
+ struct rasops_info *ri;
+ int height, fs;
+ int32_t *rp;
+ u_char *fr;
+
+ /* Can't risk remaking the stamp if it's already in use */
+ if (stamp_mutex++) {
+ stamp_mutex--;
+ rasops8_putchar(cookie, row, col, uc, attr);
+ return;
+ }
+
+ ri = (struct rasops_info *)cookie;
+
+#ifdef RASOPS_CLIPPING
+ if ((unsigned)row >= (unsigned)ri->ri_rows) {
+ stamp_mutex--;
+ return;
+ }
+
+ if ((unsigned)col >= (unsigned)ri->ri_cols) {
+ stamp_mutex--;
+ return;
+ }
+#endif
+
+ /* Recompute stamp? */
+ if (attr != stamp_attr)
+ rasops8_makestamp(ri, attr);
+
+ rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
+ height = ri->ri_font->fontheight;
+
+ if (uc == ' ') {
+ while (height--) {
+ int32_t c = stamp[0];
+
+ rp[0] = rp[1] = rp[2] = c;
+ DELTA(rp, ri->ri_stride, int32_t *);
+ }
+ } else {
+ uc -= ri->ri_font->firstchar;
+ fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
+ fs = ri->ri_font->stride;
+
+ while (height--) {
+ rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK);
+ rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK);
+ rp[2] = STAMP_READ(STAMP_SHIFT(fr[1], 1) & STAMP_MASK);
+
+ fr += fs;
+ DELTA(rp, ri->ri_stride, int32_t *);
+ }
+ }
+
+ /* Do underline */
+ if ((attr & 1) != 0) {
+ DELTA(rp, -(ri->ri_stride << 1), int32_t *);
+ rp[0] = rp[1] = rp[2] = stamp[15];
+ }
+
+ stamp_mutex--;
+}
+
+/*
+ * Put a single character. This is for 16-pixel wide fonts.
+ */
+static void
+rasops8_putchar16(cookie, row, col, uc, attr)
+ void *cookie;
+ int row, col;
+ u_int uc;
+ long attr;
+{
+ struct rasops_info *ri;
+ int height, fs;
+ int32_t *rp;
+ u_char *fr;
+
+ /* Can't risk remaking the stamp if it's already in use */
+ if (stamp_mutex++) {
+ stamp_mutex--;
+ rasops8_putchar(cookie, row, col, uc, attr);
+ return;
+ }
+
+ ri = (struct rasops_info *)cookie;
+
+#ifdef RASOPS_CLIPPING
+ if ((unsigned)row >= (unsigned)ri->ri_rows) {
+ stamp_mutex--;
+ return;
+ }
+
+ if ((unsigned)col >= (unsigned)ri->ri_cols) {
+ stamp_mutex--;
+ return;
+ }
+#endif
+
+ /* Recompute stamp? */
+ if (attr != stamp_attr)
+ rasops8_makestamp(ri, attr);
+
+ rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
+ height = ri->ri_font->fontheight;
+
+ if (uc == ' ') {
+ while (height--)
+ rp[0] = rp[1] = rp[2] = rp[3] = stamp[0];
+ } else {
+ uc -= ri->ri_font->firstchar;
+ fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
+ fs = ri->ri_font->stride;
+
+ while (height--) {
+ rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK);
+ rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK);
+ rp[2] = STAMP_READ(STAMP_SHIFT(fr[1], 1) & STAMP_MASK);
+ rp[3] = STAMP_READ(STAMP_SHIFT(fr[1], 0) & STAMP_MASK);
+
+ fr += fs;
+ DELTA(rp, ri->ri_stride, int32_t *);
+ }
+ }
+
+ /* Do underline */
+ if ((attr & 1) != 0) {
+ DELTA(rp, -(ri->ri_stride << 1), int32_t *);
+ rp[0] = rp[1] = rp[2] = rp[3] = stamp[15];
+ }
+
+ stamp_mutex--;
+}
+#endif /* !RASOPS_SMALL */
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