NetBSD-5.0.2/sys/dev/rasops/rasops2.c
/* $NetBSD: rasops2.c,v 1.12 2008/04/28 20:23:56 martin 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.
*
* 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: rasops2.c,v 1.12 2008/04/28 20:23:56 martin Exp $");
#include "opt_rasops.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <machine/endian.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/wscons/wsconsio.h>
#include <dev/rasops/rasops.h>
#include <dev/rasops/rasops_masks.h>
static void rasops2_copycols(void *, int, int, int, int);
static void rasops2_erasecols(void *, int, int, int, long);
static void rasops2_do_cursor(struct rasops_info *);
static void rasops2_putchar(void *, int, int col, u_int, long);
#ifndef RASOPS_SMALL
static void rasops2_putchar8(void *, int, int col, u_int, long);
static void rasops2_putchar12(void *, int, int col, u_int, long);
static void rasops2_putchar16(void *, int, int col, u_int, long);
static void rasops2_makestamp(struct rasops_info *, long);
/*
* 4x1 stamp for optimized character blitting
*/
static int8_t stamp[16];
static long stamp_attr;
static int stamp_mutex; /* XXX see note in README */
#endif
/*
* Initialize rasops_info struct for this colordepth.
*/
void
rasops2_init(ri)
struct rasops_info *ri;
{
switch (ri->ri_font->fontwidth) {
#ifndef RASOPS_SMALL
case 8:
ri->ri_ops.putchar = rasops2_putchar8;
break;
case 12:
ri->ri_ops.putchar = rasops2_putchar12;
break;
case 16:
ri->ri_ops.putchar = rasops2_putchar16;
break;
#endif /* !RASOPS_SMALL */
default:
panic("fontwidth not 8/12/16 or RASOPS_SMALL - fixme!");
ri->ri_ops.putchar = rasops2_putchar;
break;
}
if ((ri->ri_font->fontwidth & 3) != 0) {
ri->ri_ops.erasecols = rasops2_erasecols;
ri->ri_ops.copycols = rasops2_copycols;
ri->ri_do_cursor = rasops2_do_cursor;
}
}
#ifdef notyet
/*
* Paint a single character. This is the generic version, this is ugly.
*/
static void
rasops2_putchar(cookie, row, col, uc, attr)
void *cookie;
int row, col;
u_int uc;
long attr;
{
int height, width, fs, rs, fb, bg, fg, lmask, rmask;
struct rasops_info *ri;
int32_t *rp;
u_char *fr;
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
width = ri->ri_font->fontwidth << 1;
height = ri->ri_font->fontheight;
col *= width;
rp = (int32_t *)(ri->ri_bits + row * ri->ri_yscale + ((col >> 3) & ~3));
col = col & 31;
rs = ri->ri_stride;
bg = ri->ri_devcmap[(attr >> 16) & 0xf];
fg = ri->ri_devcmap[(attr >> 24) & 0xf];
/* If fg and bg match this becomes a space character */
if (fg == bg || uc == ' ') {
uc = (u_int)-1;
fr = 0; /* shutup gcc */
fs = 0; /* shutup gcc */
} else {
uc -= ri->ri_font->firstchar;
fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
fs = ri->ri_font->stride;
}
/* Single word, one mask */
if ((col + width) <= 32) {
rmask = rasops_pmask[col][width];
lmask = ~rmask;
if (uc == (u_int)-1) {
bg &= rmask;
while (height--) {
*rp = (*rp & lmask) | bg;
DELTA(rp, rs, int32_t *);
}
} else {
while (height--) {
/* get bits, mask */
/* compose sl */
/* mask sl */
/* put word */
}
}
/* Do underline */
if (attr & 1) {
DELTA(rp, -(ri->ri_stride << 1), int32_t *);
*rp = (*rp & lmask) | (fg & rmask);
}
} else {
lmask = ~rasops_lmask[col];
rmask = ~rasops_rmask[(col + width) & 31];
if (uc == (u_int)-1) {
bg = bg & ~lmask;
width = bg & ~rmask;
while (height--) {
rp[0] = (rp[0] & lmask) | bg;
rp[1] = (rp[1] & rmask) | width;
DELTA(rp, rs, int32_t *);
}
} else {
width = 32 - col;
/* NOT fontbits if bg is white */
while (height--) {
fb = ~(fr[3] | (fr[2] << 8) |
(fr[1] << 16) | (fr[0] << 24));
rp[0] = (rp[0] & lmask)
| MBE((u_int)fb >> col);
rp[1] = (rp[1] & rmask)
| (MBE((u_int)fb << width) & ~rmask);
fr += fs;
DELTA(rp, rs, int32_t *);
}
}
/* Do underline */
if (attr & 1) {
DELTA(rp, -(ri->ri_stride << 1), int32_t *);
rp[0] = (rp[0] & lmask) | (fg & ~lmask);
rp[1] = (rp[1] & rmask) | (fg & ~rmask);
}
}
}
#endif
/*
* Put a single character. This is the generic version.
*/
static void
rasops2_putchar(cookie, row, col, uc, attr)
void *cookie;
int row, col;
u_int uc;
long attr;
{
/* XXX punt */
}
#ifndef RASOPS_SMALL
/*
* Recompute the blitting stamp.
*/
static void
rasops2_makestamp(ri, attr)
struct rasops_info *ri;
long attr;
{
int i, fg, bg;
fg = ri->ri_devcmap[(attr >> 24) & 0xf] & 3;
bg = ri->ri_devcmap[(attr >> 16) & 0xf] & 3;
stamp_attr = attr;
for (i = 0; i < 16; i++) {
stamp[i] = (i & 1 ? fg : bg);
stamp[i] |= (i & 2 ? fg : bg) << 2;
stamp[i] |= (i & 4 ? fg : bg) << 4;
stamp[i] |= (i & 8 ? fg : bg) << 6;
}
}
/*
* Put a single character. This is for 8-pixel wide fonts.
*/
static void
rasops2_putchar8(cookie, row, col, uc, attr)
void *cookie;
int row, col;
u_int uc;
long attr;
{
struct rasops_info *ri;
int height, fs, rs;
u_char *fr, *rp;
/* Can't risk remaking the stamp if it's already in use */
if (stamp_mutex++) {
stamp_mutex--;
rasops2_putchar(cookie, row, col, uc, attr);
return;
}
ri = (struct rasops_info *)cookie;
#ifdef RASOPS_CLIPPING
/* Catches 'row < 0' case too */
if ((unsigned)row >= (unsigned)ri->ri_rows) {
stamp_mutex--;
return;
}
if ((unsigned)col >= (unsigned)ri->ri_cols) {
stamp_mutex--;
return;
}
#endif
rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale;
height = ri->ri_font->fontheight;
rs = ri->ri_stride;
/* Recompute stamp? */
if (attr != stamp_attr)
rasops2_makestamp(ri, attr);
if (uc == ' ') {
int8_t c = stamp[0];
while (height--) {
*(int16_t *)rp = c;
rp += rs;
}
} 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[(*fr >> 4) & 0xf];
rp[1] = stamp[*fr & 0xf];
fr += fs;
rp += rs;
}
}
/* Do underline */
if ((attr & 1) != 0)
*(int16_t *)(rp - (ri->ri_stride << 1)) = stamp[15];
stamp_mutex--;
}
/*
* Put a single character. This is for 12-pixel wide fonts.
*/
static void
rasops2_putchar12(cookie, row, col, uc, attr)
void *cookie;
int row, col;
u_int uc;
long attr;
{
struct rasops_info *ri;
int height, fs, rs;
u_char *fr, *rp;
/* Can't risk remaking the stamp if it's already in use */
if (stamp_mutex++) {
stamp_mutex--;
rasops2_putchar(cookie, row, col, uc, attr);
return;
}
ri = (struct rasops_info *)cookie;
#ifdef RASOPS_CLIPPING
/* Catches 'row < 0' case too */
if ((unsigned)row >= (unsigned)ri->ri_rows) {
stamp_mutex--;
return;
}
if ((unsigned)col >= (unsigned)ri->ri_cols) {
stamp_mutex--;
return;
}
#endif
rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale;
height = ri->ri_font->fontheight;
rs = ri->ri_stride;
/* Recompute stamp? */
if (attr != stamp_attr)
rasops2_makestamp(ri, attr);
if (uc == ' ') {
int8_t c = stamp[0];
while (height--) {
rp[0] = rp[1] = rp[2] = c;
rp += rs;
}
} 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[(fr[0] >> 4) & 0xf];
rp[1] = stamp[fr[0] & 0xf];
rp[2] = stamp[(fr[1] >> 4) & 0xf];
fr += fs;
rp += rs;
}
}
/* Do underline */
if ((attr & 1) != 0) {
rp -= ri->ri_stride << 1;
rp[0] = rp[1] = rp[2] = stamp[15];
}
stamp_mutex--;
}
/*
* Put a single character. This is for 16-pixel wide fonts.
*/
static void
rasops2_putchar16(cookie, row, col, uc, attr)
void *cookie;
int row, col;
u_int uc;
long attr;
{
struct rasops_info *ri;
int height, fs, rs;
u_char *fr, *rp;
/* Can't risk remaking the stamp if it's already in use */
if (stamp_mutex++) {
stamp_mutex--;
rasops2_putchar(cookie, row, col, uc, attr);
return;
}
ri = (struct rasops_info *)cookie;
#ifdef RASOPS_CLIPPING
/* Catches 'row < 0' case too */
if ((unsigned)row >= (unsigned)ri->ri_rows) {
stamp_mutex--;
return;
}
if ((unsigned)col >= (unsigned)ri->ri_cols) {
stamp_mutex--;
return;
}
#endif
rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale;
height = ri->ri_font->fontheight;
rs = ri->ri_stride;
/* Recompute stamp? */
if (attr != stamp_attr)
rasops2_makestamp(ri, attr);
if (uc == ' ') {
int8_t c = stamp[0];
while (height--) {
*(int32_t *)rp = c;
rp += rs;
}
} 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[(fr[0] >> 4) & 0xf];
rp[1] = stamp[fr[0] & 0xf];
rp[2] = stamp[(fr[1] >> 4) & 0xf];
rp[3] = stamp[fr[1] & 0xf];
fr += fs;
rp += rs;
}
}
/* Do underline */
if ((attr & 1) != 0)
*(int32_t *)(rp - (ri->ri_stride << 1)) = stamp[15];
stamp_mutex--;
}
#endif /* !RASOPS_SMALL */
/*
* Grab routines common to depths where (bpp < 8)
*/
#define NAME(ident) rasops2_##ident
#define PIXEL_SHIFT 1
#include <dev/rasops/rasops_bitops.h>