Hi
On Thu, May 17, 2018 at 11:25 AM, Gerd Hoffmann <kra...@redhat.com> wrote:
> Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
> ---
> hw/display/bochs-display.c | 33 ++++++++++++++++++++++++++++++++-
> 1 file changed, 32 insertions(+), 1 deletion(-)
>
> diff --git a/hw/display/bochs-display.c b/hw/display/bochs-display.c
> index beeda58475..9ea6f798f4 100644
> --- a/hw/display/bochs-display.c
> +++ b/hw/display/bochs-display.c
> @@ -192,9 +192,13 @@ nofb:
> static void bochs_display_update(void *opaque)
> {
> BochsDisplayState *s = opaque;
> + DirtyBitmapSnapshot *snap = NULL;
> + bool full_update = false;
> BochsDisplayMode mode;
> DisplaySurface *ds;
> uint8_t *ptr;
> + bool dirty;
> + int y, ys;
>
> bochs_display_get_mode(s, &mode);
> if (!mode.size) {
> @@ -212,9 +216,34 @@ 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 = {
> @@ -250,6 +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)
> --
> 2.9.3
>
>
--
Marc-André Lureau
