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https://github.com/hyprwm/wlroots-hyprland.git
synced 2024-12-22 18:09:49 +01:00
backend: add WLR_BACKEND env variable
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2 changed files with 43 additions and 0 deletions
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@ -6,6 +6,7 @@
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#include <unistd.h>
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#include <wayland-server.h>
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#include <wlr/backend/drm.h>
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#include <wlr/backend/headless.h>
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#include <wlr/backend/interface.h>
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#include <wlr/backend/libinput.h>
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#include <wlr/backend/multi.h>
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@ -101,6 +102,35 @@ static struct wlr_backend *attempt_x11_backend(struct wl_display *display,
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}
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#endif
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static struct wlr_backend *attempt_headless_backend(
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struct wl_display *display) {
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struct wlr_backend *backend = wlr_headless_backend_create(display);
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if (backend == NULL) {
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return NULL;
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}
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size_t outputs = parse_outputs_env("WLR_HEADLESS_OUTPUTS");
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for (size_t i = 0; i < outputs; ++i) {
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wlr_headless_add_output(backend, 1280, 720);
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}
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return backend;
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}
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static struct wlr_backend *attempt_backend_by_name(struct wl_display *display,
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const char *name) {
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if (strcmp(name, "wayland") == 0) {
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return attempt_wl_backend(display);
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#ifdef WLR_HAS_X11_BACKEND
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} else if (strcmp(name, "x11") == 0) {
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return attempt_x11_backend(display, NULL);
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#endif
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} else if (strcmp(name, "headless") == 0) {
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return attempt_headless_backend(display);
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}
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return NULL;
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}
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struct wlr_backend *wlr_backend_autocreate(struct wl_display *display) {
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struct wlr_backend *backend = wlr_multi_backend_create(display);
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if (!backend) {
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@ -108,6 +138,18 @@ struct wlr_backend *wlr_backend_autocreate(struct wl_display *display) {
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return NULL;
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}
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const char *name = getenv("WLR_BACKEND");
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if (name) {
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struct wlr_backend *subbackend = attempt_backend_by_name(display, name);
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if (subbackend) {
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wlr_multi_backend_add(backend, subbackend);
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return backend;
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} else {
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wlr_log(L_ERROR, "unrecognized backend '%s'", name);
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return NULL;
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}
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}
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if (getenv("WAYLAND_DISPLAY") || getenv("_WAYLAND_DISPLAY") ||
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getenv("WAYLAND_SOCKET")) {
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struct wlr_backend *wl_backend = attempt_wl_backend(display);
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@ -5,6 +5,7 @@ wlroots specific
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* *WLR_DRM_DEVICES*: specifies the DRM devices (as a colon separated list) instead of auto probing them. The first existing device in this list is considered the primary DRM device.
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* *WLR_DRM_NO_ATOMIC*: set to 1 to use legacy DRM interface instead of atomic mode setting
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* *WLR_LIBINPUT_NO_DEVICES*: set to 1 to not fail without any input devices
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* *WLR_BACKEND*: force a specific backend to be used (one of: wayland, x11, headless)
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* *WLR_WL_OUTPUTS*: when using the wayland backend specifies the number of outputs
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* *WLR_X11_OUTPUTS*: when using the X11 backend specifies the number of outputs
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