backend/multi: implement get_drm_fd
Just like get_renderer, iterate over all sub-backends until we find one that implements get_drm_fd.
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@ -6,6 +6,7 @@
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#include <wlr/backend/interface.h>
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#include <wlr/backend/session.h>
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#include <wlr/util/log.h>
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#include "backend/backend.h"
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#include "backend/multi.h"
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#include "util/signal.h"
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@ -96,12 +97,26 @@ static clockid_t multi_backend_get_presentation_clock(
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return CLOCK_MONOTONIC;
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}
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static int multi_backend_get_drm_fd(struct wlr_backend *backend) {
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struct wlr_multi_backend *multi = multi_backend_from_backend(backend);
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struct subbackend_state *sub;
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wl_list_for_each(sub, &multi->backends, link) {
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if (sub->backend->impl->get_drm_fd) {
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return backend_get_drm_fd(sub->backend);
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}
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}
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return -1;
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}
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struct wlr_backend_impl backend_impl = {
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.start = multi_backend_start,
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.destroy = multi_backend_destroy,
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.get_renderer = multi_backend_get_renderer,
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.get_session = multi_backend_get_session,
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.get_presentation_clock = multi_backend_get_presentation_clock,
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.get_drm_fd = multi_backend_get_drm_fd,
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};
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static void handle_display_destroy(struct wl_listener *listener, void *data) {
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