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vga: Respect Line Compare Register in text modes 

Unbreaks setup screen of Act1/PL

Signed-off-by: malc <av1474@comtv.ru>
This commit is contained in:
malc 2009-11-06 03:46:12 +03:00
parent 3e6ba50340
commit d1984194f3
1 changed files with 13 additions and 5 deletions
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18
hw/vga.c
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@ -1267,9 +1267,9 @@ static rgb_to_pixel_dup_func *rgb_to_pixel_dup_table[NB_DEPTHS] = {
static void vga_draw_text(VGACommonState *s, int full_update)
{
int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr;
int cx_min, cx_max, linesize, x_incr;
int cx_min, cx_max, linesize, x_incr, line;
uint32_t offset, fgcol, bgcol, v, cursor_offset;
uint8_t *d1, *d, *src, *s1, *dest, *cursor_ptr;
uint8_t *d1, *d, *src, *dest, *cursor_ptr;
const uint8_t *font_ptr, *font_base[2];
int dup9, line_offset, depth_index;
uint32_t *palette;
@ -1301,7 +1301,6 @@ static void vga_draw_text(VGACommonState *s, int full_update)
full_update |= update_basic_params(s);
line_offset = s->line_offset;
s1 = s->vram_ptr + (s->start_addr * 4);
vga_get_text_resolution(s, &width, &height, &cw, &cheight);
x_incr = cw * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3);
@ -1354,9 +1353,11 @@ static void vga_draw_text(VGACommonState *s, int full_update)
dest = ds_get_data(s->ds);
linesize = ds_get_linesize(s->ds);
ch_attr_ptr = s->last_ch_attr;
line = 0;
offset = s->start_addr * 4;
for(cy = 0; cy < height; cy++) {
d1 = dest;
src = s1;
src = s->vram_ptr + offset;
cx_min = width;
cx_max = -1;
for(cx = 0; cx < width; cx++) {
@ -1419,7 +1420,14 @@ static void vga_draw_text(VGACommonState *s, int full_update)
(cx_max - cx_min + 1) * cw, cheight);
}
dest += linesize * cheight;
s1 += line_offset;
if (line >= s->line_compare) {
line -= s->line_compare;
offset = 0;
}
else {
offset += line_offset;
line += cheight;
}
}
}