Import rasops from NetBSD. This gives improved performance for raster

operations.

1 files changed, 481 insertions, 0 deletions

diff --git a/sys/dev/rasops/rasops2.c b/sys/dev/rasops/rasops2.c
new file mode 100644
index 00000000000..0bcc8120a33
--- /dev/null
+++ b/sys/dev/rasops/rasops2.c
@@ -0,0 +1,481 @@
+/*	$OpenBSD: rasops2.c,v 1.1 2001/03/18 04:32:44 nate Exp $ */
+/* 	$NetBSD: rasops2.c,v 1.5 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 "opt_rasops.h"
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: rasops2.c,v 1.5 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 <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 __P((void *, int, int, int, int));
+static void	rasops2_erasecols __P((void *, int, int, int, long));
+static void	rasops2_do_cursor __P((struct rasops_info *));
+static void	rasops2_putchar __P((void *, int, int col, u_int, long));
+#ifndef RASOPS_SMALL
+static void	rasops2_putchar8 __P((void *, int, int col, u_int, long));
+static void	rasops2_putchar12 __P((void *, int, int col, u_int, long));
+static void	rasops2_putchar16 __P((void *, int, int col, u_int, long));
+static void	rasops2_makestamp __P((struct rasops_info *, long));
+#endif
+
+/*
+ * 4x1 stamp for optimized character blitting
+ */
+static int8_t	stamp[16];
+static long	stamp_attr;
+static int	stamp_mutex;	/* XXX see note in README */
+
+/*
+ * 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>