diff options
Diffstat (limited to 'hw/display/bochs-display.c')
| -rw-r--r-- | hw/display/bochs-display.c | 34 |
1 files changed, 32 insertions, 2 deletions
diff --git a/hw/display/bochs-display.c b/hw/display/bochs-display.c index a523e81d1d..9607df1c34 100644 --- a/hw/display/bochs-display.c +++ b/hw/display/bochs-display.c @@ -191,10 +191,13 @@ static int bochs_display_get_mode(BochsDisplayState *s, static void bochs_display_update(void *opaque) { BochsDisplayState *s = opaque; + DirtyBitmapSnapshot *snap = NULL; + bool full_update = false; BochsDisplayMode mode; DisplaySurface *ds; uint8_t *ptr; - int ret; + bool dirty; + int y, ys, ret; ret = bochs_display_get_mode(s, &mode); if (ret < 0) { @@ -212,9 +215,34 @@ static void bochs_display_update(void *opaque) mode.stride, ptr + mode.offset); dpy_gfx_replace_surface(s->con, ds); + full_update = true; } - dpy_gfx_update_full(s->con); + if (full_update) { + dpy_gfx_update_full(s->con); + } else { + snap = memory_region_snapshot_and_clear_dirty(&s->vram, + mode.offset, mode.size, + DIRTY_MEMORY_VGA); + ys = -1; + for (y = 0; y < mode.height; y++) { + dirty = memory_region_snapshot_get_dirty(&s->vram, snap, + mode.offset + mode.stride * y, + mode.stride); + if (dirty && ys < 0) { + ys = y; + } + if (!dirty && ys >= 0) { + dpy_gfx_update(s->con, 0, ys, + mode.width, y - ys); + ys = -1; + } + } + if (ys >= 0) { + dpy_gfx_update(s->con, 0, ys, + mode.width, y - ys); + } + } } static const GraphicHwOps bochs_display_gfx_ops = { @@ -251,6 +279,8 @@ static void bochs_display_realize(PCIDevice *dev, Error **errp) pci_set_byte(&s->pci.config[PCI_REVISION_ID], 2); pci_register_bar(&s->pci, 0, PCI_BASE_ADDRESS_MEM_PREFETCH, &s->vram); pci_register_bar(&s->pci, 2, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->mmio); + + memory_region_set_log(&s->vram, true, DIRTY_MEMORY_VGA); } static bool bochs_display_get_big_endian_fb(Object *obj, Error **errp) |