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rasops32.c revision 1.17 
      1 /*	 $NetBSD: rasops32.c,v 1.17 2009/03/14 15:36:20 dsl Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Andrew Doran.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: rasops32.c,v 1.17 2009/03/14 15:36:20 dsl Exp $");
     34 
     35 #include "opt_rasops.h"
     36 
     37 #include <sys/param.h>
     38 #include <sys/systm.h>
     39 #include <sys/time.h>
     40 
     41 #include <dev/wscons/wsdisplayvar.h>
     42 #include <dev/wscons/wsconsio.h>
     43 #include <dev/rasops/rasops.h>
     44 
     45 static void 	rasops32_putchar(void *, int, int, u_int, long attr);
     46 
     47 /*
     48  * Initialize a 'rasops_info' descriptor for this depth.
     49  */
     50 void
     51 rasops32_init(struct rasops_info *ri)
     52 {
     53 
     54 	if (ri->ri_rnum == 0) {
     55 		ri->ri_rnum = 8;
     56 		ri->ri_rpos = 0;
     57 		ri->ri_gnum = 8;
     58 		ri->ri_gpos = 8;
     59 		ri->ri_bnum = 8;
     60 		ri->ri_bpos = 16;
     61 	}
     62 
     63 	ri->ri_ops.putchar = rasops32_putchar;
     64 }
     65 
     66 /*
     67  * Paint a single character.
     68  */
     69 static void
     70 rasops32_putchar(cookie, row, col, uc, attr)
     71 	void *cookie;
     72 	int row, col;
     73 	u_int uc;
     74 	long attr;
     75 {
     76 	int width, height, cnt, fs, fb, clr[2];
     77 	struct rasops_info *ri;
     78 	int32_t *dp, *rp, *hp, *hrp;
     79 	u_char *fr;
     80 
     81 	ri = (struct rasops_info *)cookie;
     82 	hp = hrp = NULL;
     83 
     84 #ifdef RASOPS_CLIPPING
     85 	/* Catches 'row < 0' case too */
     86 	if ((unsigned)row >= (unsigned)ri->ri_rows)
     87 		return;
     88 
     89 	if ((unsigned)col >= (unsigned)ri->ri_cols)
     90 		return;
     91 #endif
     92 
     93 	/* check if character fits into font limits */
     94 	if (uc < ri->ri_font->firstchar ||
     95 	    (uc - ri->ri_font->firstchar) >= ri->ri_font->numchars)
     96 	    return;
     97 
     98 	rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
     99 	if (ri->ri_hwbits)
    100 		hrp = (int32_t *)(ri->ri_hwbits + row*ri->ri_yscale +
    101 		    col*ri->ri_xscale);
    102 
    103 	height = ri->ri_font->fontheight;
    104 	width = ri->ri_font->fontwidth;
    105 
    106 	clr[0] = ri->ri_devcmap[(attr >> 16) & 0xf];
    107 	clr[1] = ri->ri_devcmap[(attr >> 24) & 0xf];
    108 
    109 	if (uc == ' ') {
    110 		while (height--) {
    111 			dp = rp;
    112 			DELTA(rp, ri->ri_stride, int32_t *);
    113 			if (ri->ri_hwbits) {
    114 				hp = hrp;
    115 				DELTA(hrp, ri->ri_stride, int32_t *);
    116 			}
    117 
    118 			for (cnt = width; cnt; cnt--) {
    119 				*dp++ = clr[0];
    120 				if (ri->ri_hwbits)
    121 					*hp++ = clr[0];
    122 			}
    123 		}
    124 	} else {
    125 		uc -= ri->ri_font->firstchar;
    126 		fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
    127 		fs = ri->ri_font->stride;
    128 
    129 		while (height--) {
    130 			dp = rp;
    131 			fb = fr[3] | (fr[2] << 8) | (fr[1] << 16) |
    132 			    (fr[0] << 24);
    133 			fr += fs;
    134 			DELTA(rp, ri->ri_stride, int32_t *);
    135 			if (ri->ri_hwbits) {
    136 				hp = hrp;
    137 				DELTA(hrp, ri->ri_stride, int32_t *);
    138 			}
    139 
    140 			for (cnt = width; cnt; cnt--) {
    141 				*dp++ = clr[(fb >> 31) & 1];
    142 				if (ri->ri_hwbits)
    143 					*hp++ = clr[(fb >> 31) & 1];
    144 				fb <<= 1;
    145 			}
    146 		}
    147 	}
    148 
    149 	/* Do underline */
    150 	if ((attr & 1) != 0) {
    151 		DELTA(rp, -(ri->ri_stride << 1), int32_t *);
    152 		if (ri->ri_hwbits)
    153 			DELTA(hrp, -(ri->ri_stride << 1), int32_t *);
    154 
    155 		while (width--) {
    156 			*rp++ = clr[1];
    157 			if (ri->ri_hwbits)
    158 				*hrp++ = clr[1];
    159 		}
    160 	}
    161 }
    162