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backend/x11: Give X11 a real rendering loop

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Makes use of the present extension to get notified of vsync, and not
require any stupid timer hacks. Also make use of the present version of
ConfigureNotify, because why not?
This commit is contained in:
Scott Anderson 2019-11-02 23:25:45 +13:00 • committed by Simon Ser
parent b81bb2ef30
commit a3c3b928a3
4 changed files with 95 additions and 67 deletions
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42
backend/x11/backend.c
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@ -12,6 +12,7 @@
#include <X11/Xlib-xcb.h>
#include <wayland-server-core.h>
#include <xcb/xcb.h>
#include <xcb/present.h>
#include <xcb/xfixes.h>
#include <xcb/xinput.h>
@ -50,16 +51,6 @@ static void handle_x11_event(struct wlr_x11_backend *x11,
}
break;
}
case XCB_CONFIGURE_NOTIFY: {
xcb_configure_notify_event_t *ev =
(xcb_configure_notify_event_t *)event;
struct wlr_x11_output *output =
get_x11_output_from_window_id(x11, ev->window);
if (output != NULL) {
handle_x11_configure_notify(output, ev);
}
break;
}
case XCB_CLIENT_MESSAGE: {
xcb_client_message_event_t *ev = (xcb_client_message_event_t *)event;
if (ev->data.data32[0] == x11->atoms.wm_delete_window) {
@ -73,7 +64,10 @@ static void handle_x11_event(struct wlr_x11_backend *x11,
}
case XCB_GE_GENERIC: {
xcb_ge_generic_event_t *ev = (xcb_ge_generic_event_t *)event;
if (ev->extension == x11->xinput_opcode) {
if (ev->extension == x11->present_opcode) {
handle_x11_present_event(x11,
(xcb_present_generic_event_t *)ev);
} else if (ev->extension == x11->xinput_opcode) {
handle_x11_xinput_event(x11, ev);
}
}
@ -224,6 +218,30 @@ struct wlr_backend *wlr_x11_backend_create(struct wl_display *display,
const xcb_query_extension_reply_t *ext;
/* Present extension */
ext = xcb_get_extension_data(x11->xcb, &xcb_present_id);
if (!ext || !ext->present) {
wlr_log(WLR_ERROR, "X11 does not support Present extension");
goto error_display;
}
x11->present_opcode = ext->major_opcode;
xcb_present_query_version_cookie_t present_cookie =
xcb_present_query_version(x11->xcb, 1, 2);
xcb_present_query_version_reply_t *present_reply =
xcb_present_query_version_reply(x11->xcb, present_cookie, NULL);
if (!present_reply || (present_reply->major_version <= 1 &&
present_reply->minor_version < 2)) {
wlr_log(WLR_ERROR, "X11 does not support required Present version");
free(present_reply);
goto error_display;
}
free(present_reply);
/* Xfixes extension */
ext = xcb_get_extension_data(x11->xcb, &xcb_xfixes_id);
if (!ext || !ext->present) {
wlr_log(WLR_ERROR, "X11 does not support Xfixes extension");
@ -242,6 +260,8 @@ struct wlr_backend *wlr_x11_backend_create(struct wl_display *display,
}
free(fixes_reply);
/* Xinput extension */
ext = xcb_get_extension_data(x11->xcb, &xcb_input_id);
if (!ext || !ext->present) {
wlr_log(WLR_ERROR, "X11 does not support Xinput extension");