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Fix spurious VGA updates

Browse Source 
(Samuel Thibault)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4328 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-05-04 13:11:53 +00:00
parent 8dd3dca351
commit 1534272158
1 changed files with 10 additions and 2 deletions
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12
hw/vga.c
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@ -1418,7 +1418,7 @@ void vga_invalidate_scanlines(VGAState *s, int y1, int y2)
static void vga_draw_graphic(VGAState *s, int full_update)
{
int y1, y, update, page_min, page_max, linesize, y_start, double_scan, mask;
int width, height, shift_control, line_offset, page0, page1, bwidth;
int width, height, shift_control, line_offset, page0, page1, bwidth, bits;
int disp_width, multi_scan, multi_run;
uint8_t *d;
uint32_t v, addr1, addr;
@ -1454,6 +1454,7 @@ static void vga_draw_graphic(VGAState *s, int full_update)
} else {
v = VGA_DRAW_LINE4;
}
bits = 4;
} else if (shift_control == 1) {
full_update |= update_palette16(s);
if (s->sr[0x01] & 8) {
@ -1462,28 +1463,35 @@ static void vga_draw_graphic(VGAState *s, int full_update)
} else {
v = VGA_DRAW_LINE2;
}
bits = 4;
} else {
switch(s->get_bpp(s)) {
default:
case 0:
full_update |= update_palette256(s);
v = VGA_DRAW_LINE8D2;
bits = 4;
break;
case 8:
full_update |= update_palette256(s);
v = VGA_DRAW_LINE8;
bits = 8;
break;
case 15:
v = VGA_DRAW_LINE15;
bits = 16;
break;
case 16:
v = VGA_DRAW_LINE16;
bits = 16;
break;
case 24:
v = VGA_DRAW_LINE24;
bits = 24;
break;
case 32:
v = VGA_DRAW_LINE32;
bits = 32;
break;
}
}
@ -1507,7 +1515,7 @@ static void vga_draw_graphic(VGAState *s, int full_update)
width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]);
#endif
addr1 = (s->start_addr * 4);
bwidth = width * 4;
bwidth = (width * bits + 7) / 8;
y_start = -1;
page_min = 0x7fffffff;
page_max = -1;