diff options
| -rw-r--r-- | hw/display/vga.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/hw/display/vga.c b/hw/display/vga.c index 69c3e1d..3991b88 100644 --- a/hw/display/vga.c +++ b/hw/display/vga.c @@ -1434,6 +1434,14 @@ void vga_invalidate_scanlines(VGACommonState *s, int y1, int y2) } } +static bool vga_scanline_invalidated(VGACommonState *s, int y) +{ + if (y >= VGA_MAX_HEIGHT) { + return false; + } + return s->invalidated_y_table[y >> 5] & (1 << (y & 0x1f)); +} + void vga_sync_dirty_bitmap(VGACommonState *s) { memory_region_sync_dirty_bitmap(&s->vram); @@ -1638,8 +1646,8 @@ static void vga_draw_graphic(VGACommonState *s, int full_update) page1 = addr + bwidth - 1; update |= memory_region_get_dirty(&s->vram, page0, page1 - page0, DIRTY_MEMORY_VGA); - /* explicit invalidation for the hardware cursor */ - update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1; + /* explicit invalidation for the hardware cursor (cirrus only) */ + update |= vga_scanline_invalidated(s, y); if (update) { if (y_start < 0) y_start = y; @@ -1686,7 +1694,7 @@ static void vga_draw_graphic(VGACommonState *s, int full_update) page_max - page_min, DIRTY_MEMORY_VGA); } - memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4); + memset(s->invalidated_y_table, 0, sizeof(s->invalidated_y_table)); } static void vga_draw_blank(VGACommonState *s, int full_update) |