179 lines
4.6 KiB
C
179 lines
4.6 KiB
C
/* $NetBSD: rasops8.c,v 1.51 2019/08/14 00:51:10 rin 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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*
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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 <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: rasops8.c,v 1.51 2019/08/14 00:51:10 rin Exp $");
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#ifdef _KERNEL_OPT
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#include "opt_rasops.h"
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#endif
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#include <sys/param.h>
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#include <dev/wscons/wsdisplayvar.h>
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#include <dev/wscons/wsconsio.h>
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#define _RASOPS_PRIVATE
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#define RASOPS_DEPTH 8
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#include <dev/rasops/rasops.h>
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static void rasops8_putchar(void *, int, int, u_int, long);
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static void rasops8_putchar_aa(void *, int, int, u_int, long);
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#ifndef RASOPS_SMALL
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static void rasops8_putchar8(void *, int, int, u_int, long);
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static void rasops8_putchar12(void *, int, int, u_int, long);
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static void rasops8_putchar16(void *, int, int, u_int, long);
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static void rasops8_makestamp(struct rasops_info *ri, long);
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#endif
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#ifndef RASOPS_SMALL
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/* stamp for optimized character blitting */
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static uint32_t stamp[16];
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static long stamp_attr;
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static struct rasops_info *stamp_ri;
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/*
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* offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK
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* destination = STAMP_READ(offset)
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*/
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#define STAMP_SHIFT(fb, n) ((n) ? (fb) >> 2 : (fb) << 2)
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#define STAMP_MASK (0xf << 2)
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#define STAMP_READ(o) (*(uint32_t *)((uint8_t *)stamp + (o)))
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#endif
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/*
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* Initialize a 'rasops_info' descriptor for this depth.
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*/
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void
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rasops8_init(struct rasops_info *ri)
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{
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if (ri->ri_flg & RI_8BIT_IS_RGB) {
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ri->ri_rnum = ri->ri_gnum = 3;
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ri->ri_bnum = 2;
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ri->ri_rpos = 5;
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ri->ri_gpos = 2;
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ri->ri_bpos = 0;
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}
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if (FONT_IS_ALPHA(ri->ri_font)) {
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ri->ri_ops.putchar = rasops8_putchar_aa;
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return;
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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 = rasops8_putchar8;
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break;
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case 12:
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ri->ri_ops.putchar = rasops8_putchar12;
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break;
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case 16:
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ri->ri_ops.putchar = rasops8_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 = rasops8_putchar;
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return;
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}
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#ifndef RASOPS_SMALL
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stamp_attr = -1;
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stamp_ri = NULL;
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#endif
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}
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/* rasops8_putchar */
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#undef RASOPS_AA
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#include <dev/rasops/rasops_putchar.h>
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/* rasops8_putchar_aa */
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#define RASOPS_AA
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#include <dev/rasops/rasops_putchar.h>
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#undef RASOPS_AA
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#ifndef RASOPS_SMALL
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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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rasops8_makestamp(struct rasops_info *ri, long attr)
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{
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int i;
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uint32_t bg, fg;
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stamp_attr = attr;
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stamp_ri = ri;
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bg = ATTR_BG(ri, attr) & 0xff;
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fg = ATTR_FG(ri, attr) & 0xff;
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for (i = 0; i < 16; i++) {
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#if BYTE_ORDER == LITTLE_ENDIAN
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if ((ri->ri_flg & RI_BSWAP) == 0)
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#else
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if ((ri->ri_flg & RI_BSWAP) != 0)
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#endif
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{
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/* little endian */
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stamp[i] = (i & 8 ? fg : bg);
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stamp[i] |= (i & 4 ? fg : bg) << 8;
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stamp[i] |= (i & 2 ? fg : bg) << 16;
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stamp[i] |= (i & 1 ? fg : bg) << 24;
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} else {
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/* big endian */
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stamp[i] = (i & 1 ? fg : bg);
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stamp[i] |= (i & 2 ? fg : bg) << 8;
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stamp[i] |= (i & 4 ? fg : bg) << 16;
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stamp[i] |= (i & 8 ? fg : bg) << 24;
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}
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}
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}
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/*
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* Width-optimized putchar functions
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*/
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#define RASOPS_WIDTH 8
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#include <dev/rasops/rasops_putchar_width.h>
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#undef RASOPS_WIDTH
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#define RASOPS_WIDTH 12
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#include <dev/rasops/rasops_putchar_width.h>
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#undef RASOPS_WIDTH
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#define RASOPS_WIDTH 16
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#include <dev/rasops/rasops_putchar_width.h>
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#undef RASOPS_WIDTH
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#endif /* !RASOPS_SMALL */
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