BitHeaven
/
picom
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Slightly better error handling 

Handle backend initialization failure.

Also actually disable vsync when it's not supported in the new xrender
backend.

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
This commit is contained in:
Yuxuan Shui 2019-02-25 00:07:12 +00:00
parent 72a977eed5
commit 7a446ca1f4
No known key found for this signature in database
GPG Key ID: 37C999F617EA1A47
2 changed files with 85 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

92
src/backend/xrender.c
View File

@ -25,6 +25,8 @@
#define auto __auto_type
typedef struct _xrender_data {
/// If vsync is enabled and supported by the current system
bool vsync;
/// The idle fence for the present extension
xcb_sync_fence_t idle_fence;
bool present_in_progress;
@ -393,6 +395,30 @@ static void release_win(void *backend_data, session_t *ps, win *w, void *win_dat
free(wd);
}
static void deinit(void *backend_data, session_t *ps) {
struct _xrender_data *xd = backend_data;
for (int i = 0; i < 256; i++) {
xcb_render_free_picture(ps->c, xd->alpha_pict[i]);
}
xcb_render_free_picture(ps->c, xd->target);
xcb_render_free_picture(ps->c, xd->root_pict);
for (int i = 0; i < 2; i++) {
xcb_render_free_picture(ps->c, xd->back[i]);
xcb_free_pixmap(ps->c, xd->back_pixmap[i]);
}
for (int i = 0; ps->o.blur_kerns[i]; i++) {
free(xd->x_blur_kern[i]);
}
if (xd->present_event) {
xcb_unregister_for_special_event(ps->c, xd->present_event);
}
xcb_render_free_picture(ps->c, xd->white_pixel);
xcb_render_free_picture(ps->c, xd->black_pixel);
xcb_render_free_picture(ps->c, xd->shadow_pixel);
free_conv(xd->shadow_kernel);
free(xd);
}
static void *init(session_t *ps) {
auto xd = ccalloc(1, struct _xrender_data);
@ -429,13 +455,41 @@ static void *init(session_t *ps) {
abort();
}
xd->vsync = ps->o.vsync != VSYNC_NONE;
if (ps->present_exists) {
auto eid = xcb_generate_id(ps->c);
auto e =
xcb_request_check(ps->c, xcb_present_select_input_checked(
ps->c, eid, xd->target_win,
XCB_PRESENT_EVENT_MASK_COMPLETE_NOTIFY));
if (e) {
log_error("Cannot select present input, vsync will be disabled");
xd->vsync = false;
free(e);
}
xd->present_event =
xcb_register_for_special_xge(ps->c, &xcb_present_id, eid, NULL);
if (!xd->present_event) {
log_error("Cannot register for special XGE, vsync will be "
"disabled");
xd->vsync = false;
}
} else {
xd->vsync = false;
}
// We might need to do double buffering for vsync
int pixmap_needed = ps->o.vsync ? 2 : 1;
int pixmap_needed = xd->vsync ? 2 : 1;
for (int i = 0; i < pixmap_needed; i++) {
xd->back_pixmap[i] = x_create_pixmap(ps->c, pictfmt->depth, ps->root,
ps->root_width, ps->root_height);
xd->back[i] = x_create_picture_with_pictfmt_and_pixmap(
ps->c, pictfmt, xd->back_pixmap[i], 0, NULL);
if (xd->back_pixmap[i] == XCB_NONE || xd->back[i] == XCB_NONE) {
log_error("Cannot create pixmap for rendering");
goto err;
}
}
xd->curr_back = 0;
@ -446,41 +500,15 @@ static void *init(session_t *ps) {
xd->root_pict = x_create_picture_with_visual_and_pixmap(
ps->c, ps->vis, root_pixmap, 0, NULL);
}
if (ps->present_exists) {
auto eid = xcb_generate_id(ps->c);
auto e =
xcb_request_check(ps->c, xcb_present_select_input_checked(
ps->c, eid, xd->target_win,
XCB_PRESENT_EVENT_MASK_COMPLETE_NOTIFY));
if (e) {
log_error("Cannot select present input, vsync will be disabled");
free(e);
}
xd->present_event =
xcb_register_for_special_xge(ps->c, &xcb_present_id, eid, NULL);
if (!xd->present_event) {
log_error("Cannot register for special XGE, vsync will be "
"disabled");
}
}
for (int i = 0; ps->o.blur_kerns[i]; i++) {
assert(i < MAX_BLUR_PASS - 1);
xd->x_blur_kern_size[i] = x_picture_filter_from_conv(
ps->o.blur_kerns[i], 1, &xd->x_blur_kern[i], (size_t[]){0});
}
return xd;
}
static void deinit(void *backend_data, session_t *ps) {
struct _xrender_data *xd = backend_data;
for (int i = 0; i < 256; i++)
xcb_render_free_picture(ps->c, xd->alpha_pict[i]);
xcb_render_free_picture(ps->c, xd->white_pixel);
xcb_render_free_picture(ps->c, xd->black_pixel);
free_conv(xd->shadow_kernel);
free(xd);
err:
deinit(xd, ps);
return NULL;
}
static void *root_change(void *backend_data, session_t *ps) {
@ -490,7 +518,7 @@ static void *root_change(void *backend_data, session_t *ps) {
static void prepare(void *backend_data, session_t *ps, const region_t *reg_paint) {
struct _xrender_data *xd = backend_data;
if (ps->o.vsync != VSYNC_NONE && ps->present_exists && xd->present_in_progress) {
if (xd->vsync && xd->present_in_progress) {
// TODO don't block wait for present completion
xcb_present_generic_event_t *pev =
(void *)xcb_wait_for_special_event(ps->c, xd->present_event);
@ -518,7 +546,7 @@ static void prepare(void *backend_data, session_t *ps, const region_t *reg_paint
static void present(void *backend_data, session_t *ps) {
struct _xrender_data *xd = backend_data;
if (ps->o.vsync != VSYNC_NONE && ps->present_exists) {
if (xd->vsync) {
// Only reset the fence when we are sure we will trigger it again.
// To make sure rendering won't get stuck if user toggles vsync on the
// fly.

27
src/compton.c
View File

@ -75,7 +75,7 @@ session_destroy(session_t *ps);
static void
cxinerama_upd_scrs(session_t *ps);
static void
static bool must_use
redir_start(session_t *ps);
static void
@ -657,7 +657,9 @@ paint_preprocess(session_t *ps, bool *fade_running) {
}
} else {
ev_timer_stop(ps->loop, &ps->unredir_timer);
redir_start(ps);
if (!redir_start(ps)) {
return NULL;
}
}
return t;
@ -828,7 +830,9 @@ configure_win(session_t *ps, xcb_configure_notify_event_t *ce) {
// Re-redirect screen if required
if (ps->o.reredir_on_root_change && ps->redirected) {
redir_stop(ps);
redir_start(ps);
if (!redir_start(ps)) {
return;
}
}
// Invalidate reg_ignore from the top
@ -853,6 +857,12 @@ configure_win(session_t *ps, xcb_configure_notify_event_t *ce) {
bi->root_change(ps->backend_data, ps);
} else {
ps->backend_data = bi->init(ps);
if (!ps->backend_data) {
log_fatal("Failed to re-initialize backend after root change, aborting...");
ps->quit = true;
ev_break(ps->loop, EVBREAK_ALL);
return;
}
}
}
force_repaint(ps);
@ -1961,8 +1971,10 @@ init_overlay(session_t *ps) {
/**
* Redirect all windows.
*
* @return whether the operation succeeded or not
*/
static void
static bool
redir_start(session_t *ps) {
if (!ps->redirected) {
log_debug("Screen redirected.");
@ -1982,6 +1994,12 @@ redir_start(session_t *ps) {
backend_info_t *bi = backend_list[ps->o.backend];
assert(bi);
ps->backend_data = bi->init(ps);
if (!ps->backend_data) {
log_fatal("Failed to initialize backend, aborting...");
ps->quit = true;
ev_break(ps->loop, EVBREAK_ALL);
return false;
}
for (win *w = ps->list; w; w = w->next) {
if (w->a.map_state == XCB_MAP_STATE_VIEWABLE) {
w->win_data = bi->prepare_win(ps->backend_data, ps, w);
@ -2006,6 +2024,7 @@ redir_start(session_t *ps) {
// Repaint the whole screen
force_repaint(ps);
}
return true;
}
/**