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freebsd-skq/sys/dev/syscons/scvgarndr.c
Jung-uk Kim a90b8833d2 Rework r210248. Although it fixed most of problems, it did not fix one 
particular edge case where X-axis resolution is not multiple of font width.
Now we just advance enough scan lines, then deduct a partial scan line.
It is more intuitive than the previous code.  Apply the same wisdom to EGA
and VGA planar renderers for consistency.

Reported by:	David DEMELIER (demelier dot david at gmail dot com)
2010-09-17 23:09:31 +00:00

1279 lines
33 KiB
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/*-
* Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
* All rights reserved.
*
* This code is derived from software contributed to The DragonFly Project
* by Sascha Wildner <saw@online.de>
*
* 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 as
* the first lines of this file unmodified.
* 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 AUTHORS ``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 AUTHORS 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>
__FBSDID("$FreeBSD$");
#include "opt_syscons.h"
#include "opt_vga.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/fbio.h>
#include <sys/consio.h>
#include <machine/bus.h>
#include <dev/fb/fbreg.h>
#include <dev/fb/vgareg.h>
#include <dev/syscons/syscons.h>
#include <isa/isareg.h>
#ifndef SC_RENDER_DEBUG
#define SC_RENDER_DEBUG 0
#endif
static vr_clear_t vga_txtclear;
static vr_draw_border_t vga_txtborder;
static vr_draw_t vga_txtdraw;
static vr_set_cursor_t vga_txtcursor_shape;
static vr_draw_cursor_t vga_txtcursor;
static vr_blink_cursor_t vga_txtblink;
#ifndef SC_NO_CUTPASTE
static vr_draw_mouse_t vga_txtmouse;
#else
#define vga_txtmouse (vr_draw_mouse_t *)vga_nop
#endif
#ifdef SC_PIXEL_MODE
static vr_init_t vga_rndrinit;
static vr_clear_t vga_pxlclear_direct;
static vr_clear_t vga_pxlclear_planar;
static vr_draw_border_t vga_pxlborder_direct;
static vr_draw_border_t vga_pxlborder_planar;
static vr_draw_t vga_egadraw;
static vr_draw_t vga_vgadraw_direct;
static vr_draw_t vga_vgadraw_planar;
static vr_set_cursor_t vga_pxlcursor_shape;
static vr_draw_cursor_t vga_pxlcursor_direct;
static vr_draw_cursor_t vga_pxlcursor_planar;
static vr_blink_cursor_t vga_pxlblink_direct;
static vr_blink_cursor_t vga_pxlblink_planar;
#ifndef SC_NO_CUTPASTE
static vr_draw_mouse_t vga_pxlmouse_direct;
static vr_draw_mouse_t vga_pxlmouse_planar;
#else
#define vga_pxlmouse_direct (vr_draw_mouse_t *)vga_nop
#define vga_pxlmouse_planar (vr_draw_mouse_t *)vga_nop
#endif
#endif /* SC_PIXEL_MODE */
#ifndef SC_NO_MODE_CHANGE
static vr_draw_border_t vga_grborder;
#endif
static void vga_nop(scr_stat *scp);
static sc_rndr_sw_t txtrndrsw = {
(vr_init_t *)vga_nop,
vga_txtclear,
vga_txtborder,
vga_txtdraw,
vga_txtcursor_shape,
vga_txtcursor,
vga_txtblink,
(vr_set_mouse_t *)vga_nop,
vga_txtmouse,
};
RENDERER(mda, 0, txtrndrsw, vga_set);
RENDERER(cga, 0, txtrndrsw, vga_set);
RENDERER(ega, 0, txtrndrsw, vga_set);
RENDERER(vga, 0, txtrndrsw, vga_set);
#ifdef SC_PIXEL_MODE
static sc_rndr_sw_t egarndrsw = {
(vr_init_t *)vga_nop,
vga_pxlclear_planar,
vga_pxlborder_planar,
vga_egadraw,
vga_pxlcursor_shape,
vga_pxlcursor_planar,
vga_pxlblink_planar,
(vr_set_mouse_t *)vga_nop,
vga_pxlmouse_planar,
};
RENDERER(ega, PIXEL_MODE, egarndrsw, vga_set);
static sc_rndr_sw_t vgarndrsw = {
vga_rndrinit,
(vr_clear_t *)vga_nop,
(vr_draw_border_t *)vga_nop,
(vr_draw_t *)vga_nop,
vga_pxlcursor_shape,
(vr_draw_cursor_t *)vga_nop,
(vr_blink_cursor_t *)vga_nop,
(vr_set_mouse_t *)vga_nop,
(vr_draw_mouse_t *)vga_nop,
};
RENDERER(vga, PIXEL_MODE, vgarndrsw, vga_set);
#endif /* SC_PIXEL_MODE */
#ifndef SC_NO_MODE_CHANGE
static sc_rndr_sw_t grrndrsw = {
(vr_init_t *)vga_nop,
(vr_clear_t *)vga_nop,
vga_grborder,
(vr_draw_t *)vga_nop,
(vr_set_cursor_t *)vga_nop,
(vr_draw_cursor_t *)vga_nop,
(vr_blink_cursor_t *)vga_nop,
(vr_set_mouse_t *)vga_nop,
(vr_draw_mouse_t *)vga_nop,
};
RENDERER(cga, GRAPHICS_MODE, grrndrsw, vga_set);
RENDERER(ega, GRAPHICS_MODE, grrndrsw, vga_set);
RENDERER(vga, GRAPHICS_MODE, grrndrsw, vga_set);
#endif /* SC_NO_MODE_CHANGE */
RENDERER_MODULE(vga, vga_set);
#ifndef SC_NO_CUTPASTE
#if !defined(SC_ALT_MOUSE_IMAGE) || defined(SC_PIXEL_MODE)
static u_short mouse_and_mask[16] = {
0xc000, 0xe000, 0xf000, 0xf800, 0xfc00, 0xfe00, 0xff00, 0xff80,
0xfe00, 0x1e00, 0x1f00, 0x0f00, 0x0f00, 0x0000, 0x0000, 0x0000
};
static u_short mouse_or_mask[16] = {
0x0000, 0x4000, 0x6000, 0x7000, 0x7800, 0x7c00, 0x7e00, 0x6800,
0x0c00, 0x0c00, 0x0600, 0x0600, 0x0000, 0x0000, 0x0000, 0x0000
};
#endif
#endif
#ifdef SC_PIXEL_MODE
#define GET_PIXEL(scp, pos, x, w) \
({ \
(scp)->sc->adp->va_window + \
(x) * (scp)->xoff + \
(scp)->yoff * (scp)->font_size * (w) + \
(x) * ((pos) % (scp)->xsize) + \
(scp)->font_size * (w) * ((pos) / (scp)->xsize); \
})
#define DRAW_PIXEL(scp, pos, color) do { \
switch ((scp)->sc->adp->va_info.vi_depth) { \
case 32: \
writel((pos), vga_palette32[color]); \
break; \
case 24: \
if (((pos) & 1) == 0) { \
writew((pos), vga_palette32[color]); \
writeb((pos) + 2, vga_palette32[color] >> 16); \
} else { \
writeb((pos), vga_palette32[color]); \
writew((pos) + 1, vga_palette32[color] >> 8); \
} \
break; \
case 16: \
if ((scp)->sc->adp->va_info.vi_pixel_fsizes[1] == 5) \
writew((pos), vga_palette15[color]); \
else \
writew((pos), vga_palette16[color]); \
break; \
case 15: \
writew((pos), vga_palette15[color]); \
break; \
case 8: \
writeb((pos), (uint8_t)(color)); \
} \
} while (0)
static uint32_t vga_palette32[16] = {
0x000000, 0x0000ad, 0x00ad00, 0x00adad,
0xad0000, 0xad00ad, 0xad5200, 0xadadad,
0x525252, 0x5252ff, 0x52ff52, 0x52ffff,
0xff5252, 0xff52ff, 0xffff52, 0xffffff
};
static uint16_t vga_palette16[16] = {
0x0000, 0x0016, 0x0560, 0x0576, 0xb000, 0xb016, 0xb2a0, 0xb576,
0x52aa, 0x52bf, 0x57ea, 0x57ff, 0xfaaa, 0xfabf, 0xffea, 0xffff
};
static uint16_t vga_palette15[16] = {
0x0000, 0x0016, 0x02c0, 0x02d6, 0x5800, 0x5816, 0x5940, 0x5ad6,
0x294a, 0x295f, 0x2bea, 0x2bff, 0x7d4a, 0x7d5f, 0x7fea, 0x7fff
};
#ifndef SC_NO_CUTPASTE
static uint32_t mouse_buf32[256];
static uint16_t mouse_buf16[256];
static uint8_t mouse_buf8[256];
#endif
#endif
static void
vga_nop(scr_stat *scp)
{
}
/* text mode renderer */
static void
vga_txtclear(scr_stat *scp, int c, int attr)
{
sc_vtb_clear(&scp->scr, c, attr);
}
static void
vga_txtborder(scr_stat *scp, int color)
{
vidd_set_border(scp->sc->adp, color);
}
static void
vga_txtdraw(scr_stat *scp, int from, int count, int flip)
{
vm_offset_t p;
int c;
int a;
if (from + count > scp->xsize*scp->ysize)
count = scp->xsize*scp->ysize - from;
if (flip) {
for (p = sc_vtb_pointer(&scp->scr, from); count-- > 0; ++from) {
c = sc_vtb_getc(&scp->vtb, from);
a = sc_vtb_geta(&scp->vtb, from);
a = (a & 0x8800) | ((a & 0x7000) >> 4)
| ((a & 0x0700) << 4);
p = sc_vtb_putchar(&scp->scr, p, c, a);
}
} else {
sc_vtb_copy(&scp->vtb, from, &scp->scr, from, count);
}
}
static void
vga_txtcursor_shape(scr_stat *scp, int base, int height, int blink)
{
if (base < 0 || base >= scp->font_size)
return;
/* the caller may set height <= 0 in order to disable the cursor */
#if 0
scp->curs_attr.base = base;
scp->curs_attr.height = height;
#endif
vidd_set_hw_cursor_shape(scp->sc->adp, base, height,
scp->font_size, blink);
}
static void
draw_txtcharcursor(scr_stat *scp, int at, u_short c, u_short a, int flip)
{
sc_softc_t *sc;
sc = scp->sc;
scp->cursor_saveunder_char = c;
scp->cursor_saveunder_attr = a;
#ifndef SC_NO_FONT_LOADING
if (scp->curs_attr.flags & CONS_CHAR_CURSOR) {
unsigned char *font;
int h;
int i;
if (scp->font_size < 14) {
font = sc->font_8;
h = 8;
} else if (scp->font_size >= 16) {
font = sc->font_16;
h = 16;
} else {
font = sc->font_14;
h = 14;
}
if (scp->curs_attr.base >= h)
return;
if (flip)
a = (a & 0x8800)
| ((a & 0x7000) >> 4) | ((a & 0x0700) << 4);
bcopy(font + c*h, font + sc->cursor_char*h, h);
font = font + sc->cursor_char*h;
for (i = imax(h - scp->curs_attr.base - scp->curs_attr.height, 0);
i < h - scp->curs_attr.base; ++i) {
font[i] ^= 0xff;
}
/* XXX */
vidd_load_font(sc->adp, 0, h, 8, font, sc->cursor_char, 1);
sc_vtb_putc(&scp->scr, at, sc->cursor_char, a);
} else
#endif /* SC_NO_FONT_LOADING */
{
if ((a & 0x7000) == 0x7000) {
a &= 0x8f00;
if ((a & 0x0700) == 0)
a |= 0x0700;
} else {
a |= 0x7000;
if ((a & 0x0700) == 0x0700)
a &= 0xf000;
}
if (flip)
a = (a & 0x8800)
| ((a & 0x7000) >> 4) | ((a & 0x0700) << 4);
sc_vtb_putc(&scp->scr, at, c, a);
}
}
static void
vga_txtcursor(scr_stat *scp, int at, int blink, int on, int flip)
{
video_adapter_t *adp;
int cursor_attr;
if (scp->curs_attr.height <= 0) /* the text cursor is disabled */
return;
adp = scp->sc->adp;
if (blink) {
scp->status |= VR_CURSOR_BLINK;
if (on) {
scp->status |= VR_CURSOR_ON;
vidd_set_hw_cursor(adp, at%scp->xsize,
at/scp->xsize);
} else {
if (scp->status & VR_CURSOR_ON)
vidd_set_hw_cursor(adp, -1, -1);
scp->status &= ~VR_CURSOR_ON;
}
} else {
scp->status &= ~VR_CURSOR_BLINK;
if (on) {
scp->status |= VR_CURSOR_ON;
draw_txtcharcursor(scp, at,
sc_vtb_getc(&scp->scr, at),
sc_vtb_geta(&scp->scr, at),
flip);
} else {
cursor_attr = scp->cursor_saveunder_attr;
if (flip)
cursor_attr = (cursor_attr & 0x8800)
| ((cursor_attr & 0x7000) >> 4)
| ((cursor_attr & 0x0700) << 4);
if (scp->status & VR_CURSOR_ON)
sc_vtb_putc(&scp->scr, at,
scp->cursor_saveunder_char,
cursor_attr);
scp->status &= ~VR_CURSOR_ON;
}
}
}
static void
vga_txtblink(scr_stat *scp, int at, int flip)
{
}
#ifndef SC_NO_CUTPASTE
static void
draw_txtmouse(scr_stat *scp, int x, int y)
{
#ifndef SC_ALT_MOUSE_IMAGE
if (ISMOUSEAVAIL(scp->sc->adp->va_flags)) {
u_char font_buf[128];
u_short cursor[32];
u_char c;
int pos;
int xoffset, yoffset;
int crtc_addr;
int i;
/* prepare mousepointer char's bitmaps */
pos = (y/scp->font_size - scp->yoff)*scp->xsize + x/8 - scp->xoff;
bcopy(scp->font + sc_vtb_getc(&scp->scr, pos)*scp->font_size,
&font_buf[0], scp->font_size);
bcopy(scp->font + sc_vtb_getc(&scp->scr, pos + 1)*scp->font_size,
&font_buf[32], scp->font_size);
bcopy(scp->font
+ sc_vtb_getc(&scp->scr, pos + scp->xsize)*scp->font_size,
&font_buf[64], scp->font_size);
bcopy(scp->font
+ sc_vtb_getc(&scp->scr, pos + scp->xsize + 1)*scp->font_size,
&font_buf[96], scp->font_size);
for (i = 0; i < scp->font_size; ++i) {
cursor[i] = font_buf[i]<<8 | font_buf[i+32];
cursor[i + scp->font_size] = font_buf[i+64]<<8 | font_buf[i+96];
}
/* now and-or in the mousepointer image */
xoffset = x%8;
yoffset = y%scp->font_size;
for (i = 0; i < 16; ++i) {
cursor[i + yoffset] =
(cursor[i + yoffset] & ~(mouse_and_mask[i] >> xoffset))
| (mouse_or_mask[i] >> xoffset);
}
for (i = 0; i < scp->font_size; ++i) {
font_buf[i] = (cursor[i] & 0xff00) >> 8;
font_buf[i + 32] = cursor[i] & 0xff;
font_buf[i + 64] = (cursor[i + scp->font_size] & 0xff00) >> 8;
font_buf[i + 96] = cursor[i + scp->font_size] & 0xff;
}
#if 1
/* wait for vertical retrace to avoid jitter on some videocards */
crtc_addr = scp->sc->adp->va_crtc_addr;
while (!(inb(crtc_addr + 6) & 0x08)) /* idle */ ;
#endif
c = scp->sc->mouse_char;
vidd_load_font(scp->sc->adp, 0, 32, 8, font_buf, c, 4);
sc_vtb_putc(&scp->scr, pos, c, sc_vtb_geta(&scp->scr, pos));
/* FIXME: may be out of range! */
sc_vtb_putc(&scp->scr, pos + scp->xsize, c + 2,
sc_vtb_geta(&scp->scr, pos + scp->xsize));
if (x < (scp->xsize - 1)*8) {
sc_vtb_putc(&scp->scr, pos + 1, c + 1,
sc_vtb_geta(&scp->scr, pos + 1));
sc_vtb_putc(&scp->scr, pos + scp->xsize + 1, c + 3,
sc_vtb_geta(&scp->scr, pos + scp->xsize + 1));
}
} else
#endif /* SC_ALT_MOUSE_IMAGE */
{
/* Red, magenta and brown are mapped to green to to keep it readable */
static const int col_conv[16] = {
6, 6, 6, 6, 2, 2, 2, 6, 14, 14, 14, 14, 10, 10, 10, 14
};
int pos;
int color;
int a;
pos = (y/scp->font_size - scp->yoff)*scp->xsize + x/8 - scp->xoff;
a = sc_vtb_geta(&scp->scr, pos);
if (scp->sc->adp->va_flags & V_ADP_COLOR)
color = (col_conv[(a & 0xf000) >> 12] << 12)
| ((a & 0x0f00) | 0x0800);
else
color = ((a & 0xf000) >> 4) | ((a & 0x0f00) << 4);
sc_vtb_putc(&scp->scr, pos, sc_vtb_getc(&scp->scr, pos), color);
}
}
static void
remove_txtmouse(scr_stat *scp, int x, int y)
{
}
static void
vga_txtmouse(scr_stat *scp, int x, int y, int on)
{
if (on)
draw_txtmouse(scp, x, y);
else
remove_txtmouse(scp, x, y);
}
#endif /* SC_NO_CUTPASTE */
#ifdef SC_PIXEL_MODE
/* pixel (raster text) mode renderer */
static void
vga_rndrinit(scr_stat *scp)
{
if (scp->sc->adp->va_info.vi_mem_model == V_INFO_MM_PLANAR) {
scp->rndr->clear = vga_pxlclear_planar;
scp->rndr->draw_border = vga_pxlborder_planar;
scp->rndr->draw = vga_vgadraw_planar;
scp->rndr->draw_cursor = vga_pxlcursor_planar;
scp->rndr->blink_cursor = vga_pxlblink_planar;
scp->rndr->draw_mouse = vga_pxlmouse_planar;
} else
if (scp->sc->adp->va_info.vi_mem_model == V_INFO_MM_DIRECT ||
scp->sc->adp->va_info.vi_mem_model == V_INFO_MM_PACKED) {
scp->rndr->clear = vga_pxlclear_direct;
scp->rndr->draw_border = vga_pxlborder_direct;
scp->rndr->draw = vga_vgadraw_direct;
scp->rndr->draw_cursor = vga_pxlcursor_direct;
scp->rndr->blink_cursor = vga_pxlblink_direct;
scp->rndr->draw_mouse = vga_pxlmouse_direct;
}
}
static void
vga_pxlclear_direct(scr_stat *scp, int c, int attr)
{
vm_offset_t p;
int line_width;
int pixel_size;
int lines;
int i;
line_width = scp->sc->adp->va_line_width;
pixel_size = scp->sc->adp->va_info.vi_pixel_size;
lines = scp->ysize * scp->font_size;
p = scp->sc->adp->va_window +
line_width * scp->yoff * scp->font_size +
scp->xoff * 8 * pixel_size;
for (i = 0; i < lines; ++i) {
bzero_io((void *)p, scp->xsize * 8 * pixel_size);
p += line_width;
}
}
static void
vga_pxlclear_planar(scr_stat *scp, int c, int attr)
{
vm_offset_t p;
int line_width;
int lines;
int i;
/* XXX: we are just filling the screen with the background color... */
outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
outw(GDCIDX, 0x0003); /* data rotate/function select */
outw(GDCIDX, 0x0f01); /* set/reset enable */
outw(GDCIDX, 0xff08); /* bit mask */
outw(GDCIDX, ((attr & 0xf000) >> 4) | 0x00); /* set/reset */
line_width = scp->sc->adp->va_line_width;
lines = scp->ysize*scp->font_size;
p = scp->sc->adp->va_window + line_width*scp->yoff*scp->font_size
+ scp->xoff;
for (i = 0; i < lines; ++i) {
bzero_io((void *)p, scp->xsize);
p += line_width;
}
outw(GDCIDX, 0x0000); /* set/reset */
outw(GDCIDX, 0x0001); /* set/reset enable */
}
static void
vga_pxlborder_direct(scr_stat *scp, int color)
{
vm_offset_t s;
vm_offset_t e;
vm_offset_t f;
int line_width;
int pixel_size;
int x;
int y;
int i;
line_width = scp->sc->adp->va_line_width;
pixel_size = scp->sc->adp->va_info.vi_pixel_size;
if (scp->yoff > 0) {
s = scp->sc->adp->va_window;
e = s + line_width * scp->yoff * scp->font_size;
for (f = s; f < e; f += pixel_size)
DRAW_PIXEL(scp, f, color);
}
y = (scp->yoff + scp->ysize) * scp->font_size;
if (scp->ypixel > y) {
s = scp->sc->adp->va_window + line_width * y;
e = s + line_width * (scp->ypixel - y);
for (f = s; f < e; f += pixel_size)
DRAW_PIXEL(scp, f, color);
}
y = scp->yoff * scp->font_size;
x = scp->xpixel / 8 - scp->xoff - scp->xsize;
for (i = 0; i < scp->ysize * scp->font_size; ++i) {
if (scp->xoff > 0) {
s = scp->sc->adp->va_window + line_width * (y + i);
e = s + scp->xoff * 8 * pixel_size;
for (f = s; f < e; f += pixel_size)
DRAW_PIXEL(scp, f, color);
}
if (x > 0) {
s = scp->sc->adp->va_window + line_width * (y + i) +
scp->xoff * 8 * pixel_size +
scp->xsize * 8 * pixel_size;
e = s + x * 8 * pixel_size;
for (f = s; f < e; f += pixel_size)
DRAW_PIXEL(scp, f, color);
}
}
}
static void
vga_pxlborder_planar(scr_stat *scp, int color)
{
vm_offset_t p;
int line_width;
int x;
int y;
int i;
vidd_set_border(scp->sc->adp, color);
outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
outw(GDCIDX, 0x0003); /* data rotate/function select */
outw(GDCIDX, 0x0f01); /* set/reset enable */
outw(GDCIDX, 0xff08); /* bit mask */
outw(GDCIDX, (color << 8) | 0x00); /* set/reset */
line_width = scp->sc->adp->va_line_width;
p = scp->sc->adp->va_window;
if (scp->yoff > 0)
bzero_io((void *)p, line_width*scp->yoff*scp->font_size);
y = (scp->yoff + scp->ysize)*scp->font_size;
if (scp->ypixel > y)
bzero_io((void *)(p + line_width*y), line_width*(scp->ypixel - y));
y = scp->yoff*scp->font_size;
x = scp->xpixel/8 - scp->xoff - scp->xsize;
for (i = 0; i < scp->ysize*scp->font_size; ++i) {
if (scp->xoff > 0)
bzero_io((void *)(p + line_width*(y + i)), scp->xoff);
if (x > 0)
bzero_io((void *)(p + line_width*(y + i)
+ scp->xoff + scp->xsize), x);
}
outw(GDCIDX, 0x0000); /* set/reset */
outw(GDCIDX, 0x0001); /* set/reset enable */
}
static void
vga_egadraw(scr_stat *scp, int from, int count, int flip)
{
vm_offset_t d;
vm_offset_t e;
u_char *f;
u_short bg;
u_short col1, col2;
int line_width;
int i, j;
int a;
u_char c;
line_width = scp->sc->adp->va_line_width;
d = GET_PIXEL(scp, from, 1, line_width);
outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
outw(GDCIDX, 0x0003); /* data rotate/function select */
outw(GDCIDX, 0x0f01); /* set/reset enable */
bg = -1;
if (from + count > scp->xsize*scp->ysize)
count = scp->xsize*scp->ysize - from;
for (i = from; count-- > 0; ++i) {
a = sc_vtb_geta(&scp->vtb, i);
if (flip) {
col1 = ((a & 0x7000) >> 4) | (a & 0x0800);
col2 = ((a & 0x8000) >> 4) | (a & 0x0700);
} else {
col1 = (a & 0x0f00);
col2 = (a & 0xf000) >> 4;
}
/* set background color in EGA/VGA latch */
if (bg != col2) {
bg = col2;
outw(GDCIDX, bg | 0x00); /* set/reset */
outw(GDCIDX, 0xff08); /* bit mask */
writeb(d, 0);
c = readb(d); /* set bg color in the latch */
}
/* foreground color */
outw(GDCIDX, col1 | 0x00); /* set/reset */
e = d;
f = &(scp->font[sc_vtb_getc(&scp->vtb, i)*scp->font_size]);
for (j = 0; j < scp->font_size; ++j, ++f) {
outw(GDCIDX, (*f << 8) | 0x08); /* bit mask */
writeb(e, 0);
e += line_width;
}
++d;
if ((i % scp->xsize) == scp->xsize - 1)
d += scp->font_size * line_width - scp->xsize;
}
outw(GDCIDX, 0x0000); /* set/reset */
outw(GDCIDX, 0x0001); /* set/reset enable */
outw(GDCIDX, 0xff08); /* bit mask */
}
static void
vga_vgadraw_direct(scr_stat *scp, int from, int count, int flip)
{
vm_offset_t d;
vm_offset_t e;
u_char *f;
u_short col1, col2, color;
int line_width, pixel_size;
int i, j, k;
int a;
line_width = scp->sc->adp->va_line_width;
pixel_size = scp->sc->adp->va_info.vi_pixel_size;
d = GET_PIXEL(scp, from, 8 * pixel_size, line_width);
if (from + count > scp->xsize * scp->ysize)
count = scp->xsize * scp->ysize - from;
for (i = from; count-- > 0; ++i) {
a = sc_vtb_geta(&scp->vtb, i);
if (flip) {
col1 = (((a & 0x7000) >> 4) | (a & 0x0800)) >> 8;
col2 = (((a & 0x8000) >> 4) | (a & 0x0700)) >> 8;
} else {
col1 = (a & 0x0f00) >> 8;
col2 = (a & 0xf000) >> 12;
}
e = d;
f = &(scp->font[sc_vtb_getc(&scp->vtb, i) * scp->font_size]);
for (j = 0; j < scp->font_size; ++j, ++f) {
for (k = 0; k < 8; ++k) {
color = *f & (1 << (7 - k)) ? col1 : col2;
DRAW_PIXEL(scp, e + pixel_size * k, color);
}
e += line_width;
}
d += 8 * pixel_size;
if ((i % scp->xsize) == scp->xsize - 1)
d += scp->font_size * line_width -
scp->xsize * 8 * pixel_size;
}
}
static void
vga_vgadraw_planar(scr_stat *scp, int from, int count, int flip)
{
vm_offset_t d;
vm_offset_t e;
u_char *f;
u_short bg;
u_short col1, col2;
int line_width;
int i, j;
int a;
u_char c;
line_width = scp->sc->adp->va_line_width;
d = GET_PIXEL(scp, from, 1, line_width);
outw(GDCIDX, 0x0305); /* read mode 0, write mode 3 */
outw(GDCIDX, 0x0003); /* data rotate/function select */
outw(GDCIDX, 0x0f01); /* set/reset enable */
outw(GDCIDX, 0xff08); /* bit mask */
bg = -1;
if (from + count > scp->xsize*scp->ysize)
count = scp->xsize*scp->ysize - from;
for (i = from; count-- > 0; ++i) {
a = sc_vtb_geta(&scp->vtb, i);
if (flip) {
col1 = ((a & 0x7000) >> 4) | (a & 0x0800);
col2 = ((a & 0x8000) >> 4) | (a & 0x0700);
} else {
col1 = (a & 0x0f00);
col2 = (a & 0xf000) >> 4;
}
/* set background color in EGA/VGA latch */
if (bg != col2) {
bg = col2;
outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
outw(GDCIDX, bg | 0x00); /* set/reset */
writeb(d, 0);
c = readb(d); /* set bg color in the latch */
outw(GDCIDX, 0x0305); /* read mode 0, write mode 3 */
}
/* foreground color */
outw(GDCIDX, col1 | 0x00); /* set/reset */
e = d;
f = &(scp->font[sc_vtb_getc(&scp->vtb, i)*scp->font_size]);
for (j = 0; j < scp->font_size; ++j, ++f) {
writeb(e, *f);
e += line_width;
}
++d;
if ((i % scp->xsize) == scp->xsize - 1)
d += scp->font_size * line_width - scp->xsize;
}
outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
outw(GDCIDX, 0x0000); /* set/reset */
outw(GDCIDX, 0x0001); /* set/reset enable */
}
static void
vga_pxlcursor_shape(scr_stat *scp, int base, int height, int blink)
{
if (base < 0 || base >= scp->font_size)
return;
/* the caller may set height <= 0 in order to disable the cursor */
#if 0
scp->curs_attr.base = base;
scp->curs_attr.height = height;
#endif
}
static void
draw_pxlcursor_direct(scr_stat *scp, int at, int on, int flip)
{
vm_offset_t d;
u_char *f;
int line_width, pixel_size;
int height;
int col1, col2, color;
int a;
int i, j;
line_width = scp->sc->adp->va_line_width;
pixel_size = scp->sc->adp->va_info.vi_pixel_size;
d = GET_PIXEL(scp, at, 8 * pixel_size, line_width) +
(scp->font_size - scp->curs_attr.base - 1) * line_width;
a = sc_vtb_geta(&scp->vtb, at);
if (flip) {
col1 = ((on) ? (a & 0x0f00) : ((a & 0xf000) >> 4)) >> 8;
col2 = ((on) ? ((a & 0xf000) >> 4) : (a & 0x0f00)) >> 8;
} else {
col1 = ((on) ? ((a & 0xf000) >> 4) : (a & 0x0f00)) >> 8;
col2 = ((on) ? (a & 0x0f00) : ((a & 0xf000) >> 4)) >> 8;
}
f = &(scp->font[sc_vtb_getc(&scp->vtb, at) * scp->font_size +
scp->font_size - scp->curs_attr.base - 1]);
height = imin(scp->curs_attr.height, scp->font_size);
for (i = 0; i < height; ++i, --f) {
for (j = 0; j < 8; ++j) {
color = *f & (1 << (7 - j)) ? col1 : col2;
DRAW_PIXEL(scp, d + pixel_size * j, color);
}
d -= line_width;
}
}
static void
draw_pxlcursor_planar(scr_stat *scp, int at, int on, int flip)
{
vm_offset_t d;
u_char *f;
int line_width;
int height;
int col;
int a;
int i;
u_char c;
line_width = scp->sc->adp->va_line_width;
d = GET_PIXEL(scp, at, 1, line_width) +
(scp->font_size - scp->curs_attr.base - 1) * line_width;
outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
outw(GDCIDX, 0x0003); /* data rotate/function select */
outw(GDCIDX, 0x0f01); /* set/reset enable */
/* set background color in EGA/VGA latch */
a = sc_vtb_geta(&scp->vtb, at);
if (flip)
col = (on) ? ((a & 0xf000) >> 4) : (a & 0x0f00);
else
col = (on) ? (a & 0x0f00) : ((a & 0xf000) >> 4);
outw(GDCIDX, col | 0x00); /* set/reset */
outw(GDCIDX, 0xff08); /* bit mask */
writeb(d, 0);
c = readb(d); /* set bg color in the latch */
/* foreground color */
if (flip)
col = (on) ? (a & 0x0f00) : ((a & 0xf000) >> 4);
else
col = (on) ? ((a & 0xf000) >> 4) : (a & 0x0f00);
outw(GDCIDX, col | 0x00); /* set/reset */
f = &(scp->font[sc_vtb_getc(&scp->vtb, at)*scp->font_size
+ scp->font_size - scp->curs_attr.base - 1]);
height = imin(scp->curs_attr.height, scp->font_size);
for (i = 0; i < height; ++i, --f) {
outw(GDCIDX, (*f << 8) | 0x08); /* bit mask */
writeb(d, 0);
d -= line_width;
}
outw(GDCIDX, 0x0000); /* set/reset */
outw(GDCIDX, 0x0001); /* set/reset enable */
outw(GDCIDX, 0xff08); /* bit mask */
}
static int pxlblinkrate = 0;
static void
vga_pxlcursor_direct(scr_stat *scp, int at, int blink, int on, int flip)
{
if (scp->curs_attr.height <= 0) /* the text cursor is disabled */
return;
if (on) {
if (!blink) {
scp->status |= VR_CURSOR_ON;
draw_pxlcursor_direct(scp, at, on, flip);
} else if (++pxlblinkrate & 4) {
pxlblinkrate = 0;
scp->status ^= VR_CURSOR_ON;
draw_pxlcursor_direct(scp, at,
scp->status & VR_CURSOR_ON,
flip);
}
} else {
if (scp->status & VR_CURSOR_ON)
draw_pxlcursor_direct(scp, at, on, flip);
scp->status &= ~VR_CURSOR_ON;
}
if (blink)
scp->status |= VR_CURSOR_BLINK;
else
scp->status &= ~VR_CURSOR_BLINK;
}
static void
vga_pxlcursor_planar(scr_stat *scp, int at, int blink, int on, int flip)
{
if (scp->curs_attr.height <= 0) /* the text cursor is disabled */
return;
if (on) {
if (!blink) {
scp->status |= VR_CURSOR_ON;
draw_pxlcursor_planar(scp, at, on, flip);
} else if (++pxlblinkrate & 4) {
pxlblinkrate = 0;
scp->status ^= VR_CURSOR_ON;
draw_pxlcursor_planar(scp, at,
scp->status & VR_CURSOR_ON,
flip);
}
} else {
if (scp->status & VR_CURSOR_ON)
draw_pxlcursor_planar(scp, at, on, flip);
scp->status &= ~VR_CURSOR_ON;
}
if (blink)
scp->status |= VR_CURSOR_BLINK;
else
scp->status &= ~VR_CURSOR_BLINK;
}
static void
vga_pxlblink_direct(scr_stat *scp, int at, int flip)
{
if (!(scp->status & VR_CURSOR_BLINK))
return;
if (!(++pxlblinkrate & 4))
return;
pxlblinkrate = 0;
scp->status ^= VR_CURSOR_ON;
draw_pxlcursor_direct(scp, at, scp->status & VR_CURSOR_ON, flip);
}
static void
vga_pxlblink_planar(scr_stat *scp, int at, int flip)
{
if (!(scp->status & VR_CURSOR_BLINK))
return;
if (!(++pxlblinkrate & 4))
return;
pxlblinkrate = 0;
scp->status ^= VR_CURSOR_ON;
draw_pxlcursor_planar(scp, at, scp->status & VR_CURSOR_ON, flip);
}
#ifndef SC_NO_CUTPASTE
static void
draw_pxlmouse_planar(scr_stat *scp, int x, int y)
{
vm_offset_t p;
int line_width;
int xoff, yoff;
int ymax;
u_short m;
int i, j;
line_width = scp->sc->adp->va_line_width;
xoff = (x - scp->xoff*8)%8;
yoff = y - (y/line_width)*line_width;
ymax = imin(y + 16, scp->ypixel);
outw(GDCIDX, 0x0805); /* read mode 1, write mode 0 */
outw(GDCIDX, 0x0001); /* set/reset enable */
outw(GDCIDX, 0x0002); /* color compare */
outw(GDCIDX, 0x0007); /* color don't care */
outw(GDCIDX, 0xff08); /* bit mask */
outw(GDCIDX, 0x0803); /* data rotate/function select (and) */
p = scp->sc->adp->va_window + line_width*y + x/8;
if (x < scp->xpixel - 8) {
for (i = y, j = 0; i < ymax; ++i, ++j) {
m = ~(mouse_and_mask[j] >> xoff);
#if defined(__i386__) || defined(__amd64__)
*(u_char *)p &= m >> 8;
*(u_char *)(p + 1) &= m;
#else
writeb(p, readb(p) & (m >> 8));
writeb(p + 1, readb(p + 1) & (m >> 8));
#endif
p += line_width;
}
} else {
xoff += 8;
for (i = y, j = 0; i < ymax; ++i, ++j) {
m = ~(mouse_and_mask[j] >> xoff);
#if defined(__i386__) || defined(__amd64__)
*(u_char *)p &= m;
#else
writeb(p, readb(p) & (m >> 8));
#endif
p += line_width;
}
}
outw(GDCIDX, 0x1003); /* data rotate/function select (or) */
p = scp->sc->adp->va_window + line_width*y + x/8;
if (x < scp->xpixel - 8) {
for (i = y, j = 0; i < ymax; ++i, ++j) {
m = mouse_or_mask[j] >> xoff;
#if defined(__i386__) || defined(__amd64__)
*(u_char *)p &= m >> 8;
*(u_char *)(p + 1) &= m;
#else
writeb(p, readb(p) & (m >> 8));
writeb(p + 1, readb(p + 1) & (m >> 8));
#endif
p += line_width;
}
} else {
for (i = y, j = 0; i < ymax; ++i, ++j) {
m = mouse_or_mask[j] >> xoff;
#if defined(__i386__) || defined(__amd64__)
*(u_char *)p &= m;
#else
writeb(p, readb(p) & (m >> 8));
#endif
p += line_width;
}
}
outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
outw(GDCIDX, 0x0003); /* data rotate/function select */
}
static void
remove_pxlmouse_planar(scr_stat *scp, int x, int y)
{
vm_offset_t p;
int col, row;
int pos;
int line_width;
int ymax;
int i;
/* erase the mouse cursor image */
col = x/8 - scp->xoff;
row = y/scp->font_size - scp->yoff;
pos = row*scp->xsize + col;
i = (col < scp->xsize - 1) ? 2 : 1;
(*scp->rndr->draw)(scp, pos, i, FALSE);
if (row < scp->ysize - 1)
(*scp->rndr->draw)(scp, pos + scp->xsize, i, FALSE);
/* paint border if necessary */
line_width = scp->sc->adp->va_line_width;
outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
outw(GDCIDX, 0x0003); /* data rotate/function select */
outw(GDCIDX, 0x0f01); /* set/reset enable */
outw(GDCIDX, 0xff08); /* bit mask */
outw(GDCIDX, (scp->border << 8) | 0x00); /* set/reset */
if (row == scp->ysize - 1) {
i = (scp->ysize + scp->yoff)*scp->font_size;
ymax = imin(i + scp->font_size, scp->ypixel);
p = scp->sc->adp->va_window + i*line_width + scp->xoff + col;
if (col < scp->xsize - 1) {
for (; i < ymax; ++i) {
writeb(p, 0);
writeb(p + 1, 0);
p += line_width;
}
} else {
for (; i < ymax; ++i) {
writeb(p, 0);
p += line_width;
}
}
}
if ((col == scp->xsize - 1) && (scp->xoff > 0)) {
i = (row + scp->yoff)*scp->font_size;
ymax = imin(i + scp->font_size*2, scp->ypixel);
p = scp->sc->adp->va_window + i*line_width
+ scp->xoff + scp->xsize;
for (; i < ymax; ++i) {
writeb(p, 0);
p += line_width;
}
}
outw(GDCIDX, 0x0000); /* set/reset */
outw(GDCIDX, 0x0001); /* set/reset enable */
}
static void
vga_pxlmouse_direct(scr_stat *scp, int x, int y, int on)
{
vm_offset_t p;
int line_width, pixel_size;
int xend, yend;
static int x_old = 0, xend_old = 0;
static int y_old = 0, yend_old = 0;
int i, j;
uint32_t *u32;
uint16_t *u16;
uint8_t *u8;
int bpp;
if (!on)
return;
bpp = scp->sc->adp->va_info.vi_depth;
if ((bpp == 16) && (scp->sc->adp->va_info.vi_pixel_fsizes[1] == 5))
bpp = 15;
line_width = scp->sc->adp->va_line_width;
pixel_size = scp->sc->adp->va_info.vi_pixel_size;
xend = imin(x + 16, scp->xpixel);
yend = imin(y + 16, scp->ypixel);
p = scp->sc->adp->va_window + y_old * line_width + x_old * pixel_size;
for (i = 0; i < (yend_old - y_old); i++) {
for (j = (xend_old - x_old - 1); j >= 0; j--) {
switch (bpp) {
case 32:
u32 = (uint32_t*)(p + j * pixel_size);
writel(u32, mouse_buf32[i * 16 + j]);
break;
case 16:
/* FALLTHROUGH */
case 15:
u16 = (uint16_t*)(p + j * pixel_size);
writew(u16, mouse_buf16[i * 16 + j]);
break;
case 8:
u8 = (uint8_t*)(p + j * pixel_size);
writeb(u8, mouse_buf8[i * 16 + j]);
break;
}
}
p += line_width;
}
p = scp->sc->adp->va_window + y * line_width + x * pixel_size;
for (i = 0; i < (yend - y); i++) {
for (j = (xend - x - 1); j >= 0; j--) {
switch (bpp) {
case 32:
u32 = (uint32_t*)(p + j * pixel_size);
mouse_buf32[i * 16 + j] = *u32;
if (mouse_or_mask[i] & (1 << (15 - j)))
writel(u32, vga_palette32[15]);
else if (mouse_and_mask[i] & (1 << (15 - j)))
writel(u32, 0);
break;
case 16:
u16 = (uint16_t*)(p + j * pixel_size);
mouse_buf16[i * 16 + j] = *u16;
if (mouse_or_mask[i] & (1 << (15 - j)))
writew(u16, vga_palette16[15]);
else if (mouse_and_mask[i] & (1 << (15 - j)))
writew(u16, 0);
break;
case 15:
u16 = (uint16_t*)(p + j * pixel_size);
mouse_buf16[i * 16 + j] = *u16;
if (mouse_or_mask[i] & (1 << (15 - j)))
writew(u16, vga_palette15[15]);
else if (mouse_and_mask[i] & (1 << (15 - j)))
writew(u16, 0);
break;
case 8:
u8 = (uint8_t*)(p + j * pixel_size);
mouse_buf8[i * 16 + j] = *u8;
if (mouse_or_mask[i] & (1 << (15 - j)))
writeb(u8, 15);
else if (mouse_and_mask[i] & (1 << (15 - j)))
writeb(u8, 0);
break;
}
}
p += line_width;
}
x_old = x;
y_old = y;
xend_old = xend;
yend_old = yend;
}
static void
vga_pxlmouse_planar(scr_stat *scp, int x, int y, int on)
{
if (on)
draw_pxlmouse_planar(scp, x, y);
else
remove_pxlmouse_planar(scp, x, y);
}
#endif /* SC_NO_CUTPASTE */
#endif /* SC_PIXEL_MODE */
#ifndef SC_NO_MODE_CHANGE
/* graphics mode renderer */
static void
vga_grborder(scr_stat *scp, int color)
{
vidd_set_border(scp->sc->adp, color);
}
#endif
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