backend/x11: add WLR_X11_OUTPUTS support

This commit is contained in:
emersion 2018-03-30 22:09:06 -04:00
parent d4f7ced6e2
commit 0a7a8cbd1c
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GPG Key ID: 0FDE7BE0E88F5E48
5 changed files with 69 additions and 29 deletions

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@ -61,26 +61,48 @@ struct wlr_renderer *wlr_backend_get_renderer(struct wlr_backend *backend) {
return NULL;
}
static int parse_outputs_env(const char *name) {
const char *outputs_str = getenv(name);
if (outputs_str == NULL) {
return 1;
}
char *end;
int outputs = (int)strtol(outputs_str, &end, 10);
if (*end || outputs < 0) {
wlr_log(L_ERROR, "%s specified with invalid integer, ignoring", name);
return 1;
}
return outputs;
}
static struct wlr_backend *attempt_wl_backend(struct wl_display *display) {
struct wlr_backend *backend = wlr_wl_backend_create(display, NULL);
if (backend) {
int outputs = 1;
const char *_outputs = getenv("WLR_WL_OUTPUTS");
if (_outputs) {
char *end;
outputs = (int)strtol(_outputs, &end, 10);
if (*end) {
wlr_log(L_ERROR, "WLR_WL_OUTPUTS specified with invalid integer, ignoring");
outputs = 1;
} else if (outputs < 0) {
wlr_log(L_ERROR, "WLR_WL_OUTPUTS specified with negative outputs, ignoring");
outputs = 1;
}
}
while (outputs--) {
wlr_wl_output_create(backend);
}
if (backend == NULL) {
return NULL;
}
int outputs = parse_outputs_env("WLR_WL_OUTPUTS");
for (int i = 0; i < outputs; ++i) {
wlr_wl_output_create(backend);
}
return backend;
}
static struct wlr_backend *attempt_x11_backend(struct wl_display *display,
const char *x11_display) {
struct wlr_backend *backend = wlr_x11_backend_create(display, x11_display);
if (backend == NULL) {
return NULL;
}
int outputs = parse_outputs_env("WLR_X11_OUTPUTS");
for (int i = 0; i < outputs; ++i) {
wlr_x11_output_create(backend);
}
return backend;
}
@ -91,7 +113,8 @@ struct wlr_backend *wlr_backend_autocreate(struct wl_display *display) {
return NULL;
}
if (getenv("WAYLAND_DISPLAY") || getenv("_WAYLAND_DISPLAY")) {
if (getenv("WAYLAND_DISPLAY") || getenv("_WAYLAND_DISPLAY") ||
getenv("WAYLAND_SOCKET")) {
struct wlr_backend *wl_backend = attempt_wl_backend(display);
if (wl_backend) {
wlr_multi_backend_add(backend, wl_backend);
@ -103,9 +126,11 @@ struct wlr_backend *wlr_backend_autocreate(struct wl_display *display) {
const char *x11_display = getenv("DISPLAY");
if (x11_display) {
struct wlr_backend *x11_backend =
wlr_x11_backend_create(display, x11_display);
wlr_multi_backend_add(backend, x11_backend);
return backend;
attempt_x11_backend(display, x11_display);
if (x11_backend) {
wlr_multi_backend_add(backend, x11_backend);
return backend;
}
}
#endif

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@ -96,6 +96,7 @@ static int x11_event(int fd, uint32_t mask, void *data) {
static bool wlr_x11_backend_start(struct wlr_backend *backend) {
struct wlr_x11_backend *x11 = (struct wlr_x11_backend *)backend;
x11->started = true;
struct {
const char *name;
@ -167,7 +168,7 @@ static bool wlr_x11_backend_start(struct wlr_backend *backend) {
wlr_signal_emit_safe(&x11->backend.events.new_input, &x11->pointer_dev);
for (size_t i = 0; i < x11->requested_outputs; ++i) {
x11_output_create(x11);
wlr_x11_output_create(&x11->backend);
}
return true;

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@ -1,3 +1,4 @@
#include <assert.h>
#include <stdlib.h>
#include <wlr/interfaces/wlr_output.h>
#include <wlr/util/log.h>
@ -77,18 +78,29 @@ static const struct wlr_output_impl output_impl = {
.swap_buffers = output_swap_buffers,
};
struct wlr_x11_output *x11_output_create(struct wlr_x11_backend *x11) {
struct wlr_output *wlr_x11_output_create(struct wlr_backend *backend) {
assert(wlr_backend_is_x11(backend));
struct wlr_x11_backend *x11 = (struct wlr_x11_backend *)backend;
if (!x11->started) {
++x11->requested_outputs;
return NULL;
}
struct wlr_x11_output *output = calloc(1, sizeof(struct wlr_x11_output));
if (output == NULL) {
return NULL;
}
output->x11 = x11;
output->frame_delay = 16; // 60 Hz
struct wlr_output *wlr_output = &output->wlr_output;
wlr_output_init(wlr_output, &x11->backend, &output_impl, x11->wl_display);
snprintf(wlr_output->name, sizeof(wlr_output->name), "X11-1");
wlr_output->refresh = 60 * 1000000;
output->frame_delay = 16; // 60 Hz
snprintf(wlr_output->name, sizeof(wlr_output->name), "X11-%d",
wl_list_length(&x11->outputs) + 1);
parse_xcb_setup(wlr_output, x11->xcb_conn);
uint32_t mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
@ -135,7 +147,7 @@ struct wlr_x11_output *x11_output_create(struct wlr_x11_backend *x11) {
wl_list_insert(&x11->outputs, &output->link);
wlr_signal_emit_safe(&x11->backend.events.new_output, wlr_output);
return output;
return wlr_output;
}
void x11_output_handle_configure_notify(struct wlr_x11_output *output,

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@ -3,11 +3,12 @@
#include <stdbool.h>
#include <wayland-server.h>
#include <wlr/backend/x11.h>
#include <wlr/interfaces/wlr_input_device.h>
#include <wlr/interfaces/wlr_output.h>
#include <wlr/render/egl.h>
#include <X11/Xlib-xcb.h>
#include <xcb/xcb.h>
#include <wlr/interfaces/wlr_input_device.h>
#include <wlr/interfaces/wlr_output.h>
#define XCB_EVENT_RESPONSE_TYPE_MASK 0x7f
@ -28,6 +29,7 @@ struct wlr_x11_output {
struct wlr_x11_backend {
struct wlr_backend backend;
struct wl_display *wl_display;
bool started;
Display *xlib_conn;
xcb_connection_t *xcb_conn;
@ -73,7 +75,6 @@ const struct wlr_input_device_impl input_device_impl;
bool x11_handle_input_event(struct wlr_x11_backend *x11,
xcb_generic_event_t *event);
struct wlr_x11_output *x11_output_create(struct wlr_x11_backend *x11);
void x11_output_handle_configure_notify(struct wlr_x11_output *output,
xcb_configure_notify_event_t *event);

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@ -9,6 +9,7 @@
struct wlr_backend *wlr_x11_backend_create(struct wl_display *display,
const char *x11_display);
struct wlr_output *wlr_x11_output_create(struct wlr_backend *backend);
bool wlr_backend_is_x11(struct wlr_backend *backend);
bool wlr_input_device_is_x11(struct wlr_input_device *device);