/* $NetBSD: rasops4.c,v 1.20.2.1 2019/08/15 12:21:27 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 __KERNEL_RCSID(0, "$NetBSD: rasops4.c,v 1.20.2.1 2019/08/15 12:21:27 martin Exp $"); #ifdef _KERNEL_OPT #include "opt_rasops.h" #endif #include #include #include #include #define _RASOPS_PRIVATE #define RASOPS_DEPTH 4 #include #include static void rasops4_copycols(void *, int, int, int, int); static void rasops4_erasecols(void *, int, int, int, long); static void rasops4_do_cursor(struct rasops_info *); static void rasops4_putchar(void *, int, int col, u_int, long); #ifndef RASOPS_SMALL static void rasops4_putchar8(void *, int, int col, u_int, long); static void rasops4_putchar12(void *, int, int col, u_int, long); static void rasops4_putchar16(void *, int, int col, u_int, long); static void rasops4_makestamp(struct rasops_info *, long); #endif #ifndef RASOPS_SMALL /* stamp for optimized character blitting */ static uint16_t stamp[16]; static long stamp_attr; static struct rasops_info *stamp_ri; /* * offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK * destination = STAMP_READ(offset) */ #define STAMP_SHIFT(fb, n) ((n) ? (fb) >> 4 : (fb)) #define STAMP_MASK 0xf #define STAMP_READ(o) stamp[o] #endif /* * Initialize rasops_info struct for this colordepth. */ void rasops4_init(struct rasops_info *ri) { if ((ri->ri_font->fontwidth & 1) != 0) { ri->ri_ops.erasecols = rasops4_erasecols; ri->ri_ops.copycols = rasops4_copycols; ri->ri_do_cursor = rasops4_do_cursor; } switch (ri->ri_font->fontwidth) { #ifndef RASOPS_SMALL case 8: ri->ri_ops.putchar = rasops4_putchar8; break; case 12: ri->ri_ops.putchar = rasops4_putchar12; break; case 16: ri->ri_ops.putchar = rasops4_putchar16; break; #endif /* !RASOPS_SMALL */ default: ri->ri_ops.putchar = rasops4_putchar; return; } #ifndef RASOPS_SMALL stamp_attr = -1; stamp_ri = NULL; #endif } #ifndef RASOPS_SMALL /* * Recompute the blitting stamp. */ static void rasops4_makestamp(struct rasops_info *ri, long attr) { int i; uint32_t bg, fg; stamp_attr = attr; stamp_ri = ri; bg = ATTR_BG(ri, attr) & 0xf; fg = ATTR_FG(ri, attr) & 0xf; for (i = 0; i < 16; i++) { #if BYTE_ORDER == LITTLE_ENDIAN if ((ri->ri_flg & RI_BSWAP) == 0) #else if ((ri->ri_flg & RI_BSWAP) != 0) #endif { /* little endian */ stamp[i] = (i & 1 ? fg : bg) << 12; stamp[i] |= (i & 2 ? fg : bg) << 8; stamp[i] |= (i & 4 ? fg : bg) << 4; stamp[i] |= (i & 8 ? fg : bg) << 0; } else { /* big endian */ stamp[i] = (i & 1 ? fg : bg) << 0; stamp[i] |= (i & 2 ? fg : bg) << 4; stamp[i] |= (i & 4 ? fg : bg) << 8; stamp[i] |= (i & 8 ? fg : bg) << 12; } } } /* * Width-optimized putchar functions */ #define RASOPS_WIDTH 8 #include #undef RASOPS_WIDTH #define RASOPS_WIDTH 12 #include #undef RASOPS_WIDTH #define RASOPS_WIDTH 16 #include #undef RASOPS_WIDTH #endif /* !RASOPS_SMALL */ /* rasops4_putchar */ #undef RASOPS_AA #include /* * Grab routines common to depths where (bpp < 8) */ #include