From 172d6f683359d2c07a07cbe051794710f3060918 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Deuc=D0=B5?= <shurd@sasktel.net>
Date: Sat, 15 May 2021 00:49:38 -0400
Subject: [PATCH] Add support for VGA 80x25 mode.
This uses the 720x400 with 9x16 character cell that always made
BBSs look so terrible.
---
src/conio/bitmap_con.c | 40 +++++++++++++++++++++++++++++++++-------
src/conio/ciolib.h | 15 ++++++++++-----
src/conio/scale.c | 10 ++++------
src/conio/vidmodes.c | 10 ++++++++++
src/conio/vidmodes.h | 6 ++++--
src/syncterm/bbslist.c | 4 ++--
src/syncterm/bbslist.h | 1 +
src/syncterm/syncterm.c | 2 ++
8 files changed, 66 insertions(+), 22 deletions(-)
diff --git a/src/conio/bitmap_con.c b/src/conio/bitmap_con.c
index 7f5615ddff..3809287461 100644
--- a/src/conio/bitmap_con.c
+++ b/src/conio/bitmap_con.c
@@ -127,6 +127,7 @@ static int bitmap_loadfont_locked(char *filename)
{
static char current_filename[MAX_PATH];
unsigned int fontsize;
+ int fdw;
int fw;
int fh;
int i;
@@ -159,7 +160,8 @@ static int bitmap_loadfont_locked(char *filename)
}
fh=vstat.charheight;
- fw=vstat.charwidth/8+(vstat.charwidth%8?1:0);
+ fdw = vstat.charwidth - (vstat.flags & VIDMODES_FLAG_EXPAND) ? 1 : 0;
+ fw = fdw / 8 + (fdw % 8 ? 1 : 0);
fontsize=fw*fh*256*sizeof(unsigned char);
@@ -190,7 +192,7 @@ static int bitmap_loadfont_locked(char *filename)
for (i=0; i<sizeof(font)/sizeof(font[0]); i++) {
if (current_font[i] < 0)
continue;
- switch(vstat.charwidth) {
+ switch(fdw) {
case 8:
switch(vstat.charheight) {
case 8:
@@ -476,9 +478,12 @@ static int bitmap_draw_one_char(unsigned int xpos, unsigned int ypos)
{
uint32_t fg;
uint32_t bg;
+ int fdw;
int xoffset=(xpos-1)*vstat.charwidth;
int yoffset=(ypos-1)*vstat.charheight;
int x;
+ int fdx;
+ uint8_t fb = 0;
int y;
int fontoffset;
unsigned char *this_font;
@@ -542,12 +547,33 @@ static int bitmap_draw_one_char(unsigned int xpos, unsigned int ypos)
}
if (this_font == NULL)
this_font = font[0];
- fontoffset=(sch & 0xff) * (vstat.charheight * ((vstat.charwidth + 7) / 8));
+ fdw = vstat.charwidth - (vstat.flags & VIDMODES_FLAG_EXPAND) ? 1 : 0;
+ fontoffset=(sch & 0xff) * (vstat.charheight * ((fdw + 7) / 8));
draw_fg = ((!(sch & 0x8000)) || vstat.no_blink);
for(y=0; y<vstat.charheight; y++) {
for(x=0; x<vstat.charwidth; x++) {
- if(this_font[fontoffset] & (0x80 >> (x & 7)) && draw_fg) {
+ fdx = x;
+ fb = this_font[fontoffset];
+ if ((x & 0x07) == 7)
+ fontoffset++;
+ if (vstat.flags & VIDMODES_FLAG_EXPAND) {
+ if (x == vstat.charwidth - 1) {
+ fontoffset--;
+ fdx--;
+ if (!(vstat.flags & VIDMODES_FLAG_LINE_GRAPHICS_EXPAND)) {
+ fb = 0;
+ }
+ else if ((sch & 0xff) >= 0xC0 && (sch & 0xff) <= 0xDF) {
+ fb = this_font[fontoffset];
+ }
+ else
+ fb = 0;
+
+ }
+ }
+
+ if(fb & (0x80 >> (fdx & 7)) && draw_fg) {
if (screena.screen[PIXEL_OFFSET(screena, xoffset + x, yoffset + y)] != fg) {
screena.update_pixels = 1;
screena.screen[PIXEL_OFFSET(screena, xoffset + x, yoffset + y)] = fg;
@@ -559,7 +585,8 @@ static int bitmap_draw_one_char(unsigned int xpos, unsigned int ypos)
screena.screen[PIXEL_OFFSET(screena, xoffset + x, yoffset + y)] = bg;
}
}
- if(this_font[fontoffset] & (0x80 >> (x & 7))) {
+
+ if(fb & (0x80 >> (fdx & 7))) {
if (screenb.screen[PIXEL_OFFSET(screenb, xoffset + x, yoffset + y)]!=fg) {
screenb.update_pixels = 1;
screenb.screen[PIXEL_OFFSET(screenb, xoffset + x, yoffset + y)]=fg;
@@ -571,8 +598,7 @@ static int bitmap_draw_one_char(unsigned int xpos, unsigned int ypos)
screenb.screen[PIXEL_OFFSET(screenb, xoffset+x, yoffset+y)]=bg;
}
}
- if ((x & 0x07) == 7)
- fontoffset++;
+
}
if (x & 0x07)
fontoffset++;
diff --git a/src/conio/ciolib.h b/src/conio/ciolib.h
index e355d3cba6..c1fdcf631c 100644
--- a/src/conio/ciolib.h
+++ b/src/conio/ciolib.h
@@ -118,11 +118,13 @@ enum {
#define BLINK 128
#endif
-#define CIOLIB_VIDEO_ALTCHARS (1<<0) // Attribute bit 3 selects alternate char set
-#define CIOLIB_VIDEO_NOBRIGHT (1<<1) // Attribute bit 3 does not increase intensity
-#define CIOLIB_VIDEO_BGBRIGHT (1<<2) // Attribute bit 7 selects high intensity background, not blink
-#define CIOLIB_VIDEO_BLINKALTCHARS (1<<3) // Attribute bit 7 selects alternate char set
-#define CIOLIB_VIDEO_NOBLINK (1<<4) // Attribute bit 7 has no effect
+#define CIOLIB_VIDEO_ALTCHARS (1<<0) // Attribute bit 3 selects alternate char set
+#define CIOLIB_VIDEO_NOBRIGHT (1<<1) // Attribute bit 3 does not increase intensity
+#define CIOLIB_VIDEO_BGBRIGHT (1<<2) // Attribute bit 7 selects high intensity background, not blink
+#define CIOLIB_VIDEO_BLINKALTCHARS (1<<3) // Attribute bit 7 selects alternate char set
+#define CIOLIB_VIDEO_NOBLINK (1<<4) // Attribute bit 7 has no effect
+#define CIOLIB_VIDEO_EXPAND (1<<5) // Use an extra blank column between characters from the font
+#define CIOLIB_VIDEO_LINE_GRAPHICS_EXPAND (1<<6) // Per VGA, when using CIOLIB_VIDEO_EXPAND, repeat the last column for chars 0xC0 - 0xDF inclusive
enum text_modes
{
@@ -182,6 +184,9 @@ enum text_modes
ST132X37_16_9,
ST132X52_5_4,
+ /* New modes we've added 'cause they're stupid */
+ VGA80X25,
+
/* Cruft... */
C4350 = C80X50, /* this is actually "64" in the "real" conio */
diff --git a/src/conio/scale.c b/src/conio/scale.c
index 87c7cdfb14..05d356b413 100644
--- a/src/conio/scale.c
+++ b/src/conio/scale.c
@@ -186,14 +186,12 @@ do_scale(struct rectlist* rect, int xscale, int yscale, double ratio)
}
// Calculate the scaled height from ratio...
- if (ratio < 1)
- fheight = lround((double)(rect->rect.height * (yscale)) / ratio);
- else
+ fheight = lround((double)(rect->rect.height * (yscale)) / ratio);
+ if (fheight < rect->rect.height * yscale)
fheight = rect->rect.height * yscale;
- if (ratio > 1)
- fwidth = lround((double)(rect->rect.width * (xscale)) / ratio);
- else
+ fwidth = lround((double)(rect->rect.width * (xscale)) * ratio);
+ if (fwidth < rect->rect.width * xscale)
fwidth = rect->rect.width * xscale;
// Now make sure target is big enough...
diff --git a/src/conio/vidmodes.c b/src/conio/vidmodes.c
index 463fd00711..8ef2690594 100644
--- a/src/conio/vidmodes.c
+++ b/src/conio/vidmodes.c
@@ -115,6 +115,8 @@ struct video_params vparams[] = {
/* Awesome modes */
{ST132X37_16_9, COLOUR_PALETTE, 132, 37, 14, 15, 16, 8, 1, 7, 0, 1, 1, 1056, 600},
{ST132X52_5_4, COLOUR_PALETTE, 132, 52, 14, 15, 16, 8, 1, 7, 0, 1, 1, 1056, 823},
+ /* Stupid modes */
+ {VGA80X25, COLOUR_PALETTE, 80, 25, 14, 15, 16, 9, 1, 7, CIOLIB_VIDEO_EXPAND | CIOLIB_VIDEO_LINE_GRAPHICS_EXPAND, 740, 1000, 720, 400},
/* Custom mode */
{CIOLIB_MODE_CUSTOM, COLOUR_PALETTE, 80, 25, 14, 15, 16, 8, 1, 7, 0, 1, 1, -1, -1},
};
@@ -318,6 +320,14 @@ int load_vmode(struct video_stats *vs, int mode)
vs->bright_altcharset=vparams[i].flags & CIOLIB_VIDEO_ALTCHARS;
vs->no_blink=vparams[i].flags & CIOLIB_VIDEO_NOBLINK;
vs->blink_altcharset=vparams[i].flags & CIOLIB_VIDEO_BLINKALTCHARS;
+ if (vparams[i].flags & CIOLIB_VIDEO_EXPAND)
+ vs->flags |= VIDMODES_FLAG_EXPAND;
+ else
+ vs->flags &= ~VIDMODES_FLAG_EXPAND;
+ if (vparams[i].flags & CIOLIB_VIDEO_LINE_GRAPHICS_EXPAND)
+ vs->flags |= VIDMODES_FLAG_LINE_GRAPHICS_EXPAND;
+ else
+ vs->flags &= ~VIDMODES_FLAG_LINE_GRAPHICS_EXPAND;
if(vs->curs_row < 0)
vs->curs_row=0;
if(vs->curs_row >= vparams[i].rows)
diff --git a/src/conio/vidmodes.h b/src/conio/vidmodes.h
index e80df43ada..c9695ddfc7 100644
--- a/src/conio/vidmodes.h
+++ b/src/conio/vidmodes.h
@@ -106,7 +106,9 @@ struct video_stats {
int scale_numerator;
int scale_denominator;
uint32_t flags;
-#define VIDMODES_FLAG_PALETTE_VMEM 1
+#define VIDMODES_FLAG_PALETTE_VMEM 1
+#define VIDMODES_FLAG_EXPAND 2
+#define VIDMODES_FLAG_LINE_GRAPHICS_EXPAND 4
uint32_t palette[16];
struct vstat_vmem *vmem;
uint8_t *forced_font;
@@ -120,7 +122,7 @@ enum {
,ATARI_PALETTE
};
-extern struct video_params vparams[54];
+extern struct video_params vparams[55];
#define NUMMODES (sizeof(vparams) / sizeof(struct video_params))
extern uint32_t palettes[5][16];
extern struct dac_colors dac_default[TOTAL_DAC_SIZE];
diff --git a/src/syncterm/bbslist.c b/src/syncterm/bbslist.c
index 5f586da90f..61d38e372a 100644
--- a/src/syncterm/bbslist.c
+++ b/src/syncterm/bbslist.c
@@ -188,8 +188,8 @@ static struct sort_order_info sort_order[] = {
int sortorder[sizeof(sort_order)/sizeof(struct sort_order_info)];
-char *screen_modes[]={ "Current", "80x25", "80x28", "80x30", "80x43", "80x50", "80x60", "132x37 (16:9)", "132x52 (5:4)", "132x25", "132x28", "132x30", "132x34", "132x43", "132x50", "132x60", "C64", "C128 (40col)", "C128 (80col)", "Atari", "Atari XEP80", "Custom", "EGA 80x25", NULL};
-static char *screen_modes_enum[]={"Current", "80x25", "80x28", "80x30", "80x43", "80x50", "80x60", "132x37", "132x52", "132x25", "132x28", "132x30", "132x34", "132x43", "132x50", "132x60", "C64", "C128-40col", "C128-80col", "Atari", "Atari-XEP80", "Custom", "EGA80x25", NULL};
+char *screen_modes[]={ "Current", "80x25", "80x28", "80x30", "80x43", "80x50", "80x60", "132x37 (16:9)", "132x52 (5:4)", "132x25", "132x28", "132x30", "132x34", "132x43", "132x50", "132x60", "C64", "C128 (40col)", "C128 (80col)", "Atari", "Atari XEP80", "Custom", "EGA 80x25", "VGA 80x25", NULL};
+static char *screen_modes_enum[]={"Current", "80x25", "80x28", "80x30", "80x43", "80x50", "80x60", "132x37", "132x52", "132x25", "132x28", "132x30", "132x34", "132x43", "132x50", "132x60", "C64", "C128-40col", "C128-80col", "Atari", "Atari-XEP80", "Custom", "EGA80x25", "VGA80x25", NULL};
char *log_levels[]={"Emergency", "Alert", "Critical", "Error", "Warning", "Notice", "Info", "Debug", NULL};
static char *log_level_desc[]={"None", "Alerts", "Critical Errors", "Errors", "Warnings", "Notices", "Normal", "All (Debug)", NULL};
diff --git a/src/syncterm/bbslist.h b/src/syncterm/bbslist.h
index bc9f413bc6..77b3ab310a 100644
--- a/src/syncterm/bbslist.h
+++ b/src/syncterm/bbslist.h
@@ -57,6 +57,7 @@ enum {
,SCREEN_MODE_ATARI_XEP80
,SCREEN_MODE_CUSTOM
,SCREEN_MODE_EGA_80X25
+ ,SCREEN_MODE_VGA_80X25
,SCREEN_MODE_TERMINATOR
};
diff --git a/src/syncterm/syncterm.c b/src/syncterm/syncterm.c
index 53aa4135af..f5328f3b86 100644
--- a/src/syncterm/syncterm.c
+++ b/src/syncterm/syncterm.c
@@ -1948,6 +1948,8 @@ int screen_to_ciolib(int screen)
return(CIOLIB_MODE_CUSTOM);
case SCREEN_MODE_EGA_80X25:
return(EGA80X25);
+ case SCREEN_MODE_VGA_80X25:
+ return(VGA80X25);
}
gettextinfo(&ti);
return(ti.currmode);
--
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