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backend-vnc: move accumulated damage with output 

When the output is moved, move its per-framebuffer accumulated damage
with it. The alternative would be to track accumulated damage in the
local output coordinate system, but that would require translating back
into global coordinates for repaint_output.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Philipp Zabel 2022-10-10 16:43:59 +02:00 committed by Marius Vlad
parent 0ece6cb436
commit ce4cf2d060
1 changed files with 23 additions and 0 deletions
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23
libweston/backend-vnc/vnc.c
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@ -62,6 +62,7 @@ struct vnc_backend {
struct weston_backend base;
struct weston_compositor *compositor;
struct vnc_output *output;
struct wl_listener output_move_listener;
struct xkb_rule_names xkb_rule_name;
struct xkb_keymap *xkb_keymap;
@ -707,6 +708,8 @@ vnc_destroy(struct weston_compositor *ec)
struct weston_head *base, *next;
struct vnc_backend *backend = to_vnc_backend(ec);
wl_list_remove(&backend->output_move_listener.link);
nvnc_close(backend->server);
weston_compositor_shutdown(ec);
@ -918,6 +921,22 @@ static const struct weston_vnc_output_api api = {
vnc_output_set_size,
};
static void
vnc_handle_output_move(struct wl_listener *listener, void *data)
{
struct weston_output *base = data;
struct vnc_output *output = to_vnc_output(base);
struct fb_side_data *fb_side_data;
if (!output)
return;
/* Move accumulated damage with output */
wl_list_for_each(fb_side_data, &output->fb_side_data_list, link)
pixman_region32_translate(&fb_side_data->damage, base->move_x,
base->move_y);
}
static int
vnc_aml_dispatch(int fd, uint32_t mask, void *data)
{
@ -1020,6 +1039,10 @@ vnc_backend_create(struct weston_compositor *compositor,
weston_log("TLS support activated\n");
backend->output_move_listener.notify = vnc_handle_output_move;
wl_signal_add(&compositor->output_moved_signal,
&backend->output_move_listener);
ret = weston_plugin_api_register(compositor, WESTON_VNC_OUTPUT_API_NAME,
&api, sizeof(api));
if (ret < 0) {