diff --git a/include/render/drm_syncobj_merger.h b/include/render/drm_syncobj_merger.h index c55c87314..397c5ce80 100644 --- a/include/render/drm_syncobj_merger.h +++ b/include/render/drm_syncobj_merger.h @@ -3,6 +3,8 @@ #include +struct wlr_buffer; + /** * Accumulate timeline points, to have a destination timeline point be * signalled when all inputs are @@ -41,4 +43,22 @@ bool wlr_drm_syncobj_merger_add(struct wlr_drm_syncobj_merger *merger, struct wlr_drm_syncobj_timeline *dst_timeline, uint64_t dst_point, struct wl_event_loop *loop); +/** + * Add a new sync file to wait for. + * + * Ownership of fd is transferred to the merger. + */ +bool wlr_drm_syncobj_merger_add_sync_file(struct wlr_drm_syncobj_merger *merger, + int fd); + +/** + * Add a new DMA-BUF release to wait for. + * + * Waits for write access. + * If the platform does not support DMA-BUF<->sync file interop, the supplied + * event_loop is used to schedule a wait. + */ +bool wlr_drm_syncobj_merger_add_dmabuf(struct wlr_drm_syncobj_merger *merger, + struct wlr_buffer *buffer, struct wl_event_loop *event_loop); + #endif diff --git a/include/wlr/types/wlr_linux_drm_syncobj_v1.h b/include/wlr/types/wlr_linux_drm_syncobj_v1.h index 7fd55ec2e..dfcbc4d43 100644 --- a/include/wlr/types/wlr_linux_drm_syncobj_v1.h +++ b/include/wlr/types/wlr_linux_drm_syncobj_v1.h @@ -74,4 +74,21 @@ bool wlr_linux_drm_syncobj_v1_state_add_release_point( struct wlr_drm_syncobj_timeline *release_timeline, uint64_t release_point, struct wl_event_loop *event_loop); +/** + * Register the DMA-BUF release of a buffer for buffer usage. + * Non-dmabuf buffers are considered to be immediately available (no wait). + * + * This function may be called multiple times for the same commit. The client's + * release point will be signalled when all registered points are signalled, and + * a new buffer has been committed. + * + * Because the platform may not support DMA-BUF fence merges, a wl_event_loop + * must be supplied to schedule a wait internally, if needed + * + * Waits for write access + */ +bool wlr_linux_drm_syncobj_v1_state_add_release_from_implicit_sync( + struct wlr_linux_drm_syncobj_surface_v1_state *state, + struct wlr_buffer *buffer, struct wl_event_loop *event_loop); + #endif diff --git a/render/drm_syncobj_merger.c b/render/drm_syncobj_merger.c index d50d28c28..0cfdfcc96 100644 --- a/render/drm_syncobj_merger.c +++ b/render/drm_syncobj_merger.c @@ -4,8 +4,10 @@ #include #include #include +#include #include #include +#include "render/dmabuf.h" #include "render/drm_syncobj_merger.h" #include "config.h" @@ -79,14 +81,7 @@ void wlr_drm_syncobj_merger_unref(struct wlr_drm_syncobj_merger *merger) { static bool merger_add_exportable(struct wlr_drm_syncobj_merger *merger, struct wlr_drm_syncobj_timeline *src_timeline, uint64_t src_point) { int new_sync = wlr_drm_syncobj_timeline_export_sync_file(src_timeline, src_point); - if (merger->sync_fd != -1) { - int fd2 = new_sync; - new_sync = sync_file_merge(merger->sync_fd, fd2); - close(fd2); - close(merger->sync_fd); - } - merger->sync_fd = new_sync; - return true; + return wlr_drm_syncobj_merger_add_sync_file(merger, new_sync); } struct export_waiter { @@ -131,3 +126,69 @@ bool wlr_drm_syncobj_merger_add(struct wlr_drm_syncobj_merger *merger, merger->n_ref++; return true; } + +bool wlr_drm_syncobj_merger_add_sync_file(struct wlr_drm_syncobj_merger *merger, + int fd) { + int new_sync = fd; + if (merger->sync_fd != -1) { + new_sync = sync_file_merge(merger->sync_fd, fd); + close(fd); + close(merger->sync_fd); + } + merger->sync_fd = new_sync; + return merger->sync_fd != -1; +} + +struct poll_waiter { + struct wl_event_source *event_source; + struct wlr_drm_syncobj_merger *merger; +}; + +static int poll_waiter_handle_done(int fd, uint32_t mask, void *data) { + struct poll_waiter *waiter = data; + wlr_drm_syncobj_merger_unref(waiter->merger); + wl_event_source_remove(waiter->event_source); + free(waiter); + return 0; +} + +bool wlr_drm_syncobj_merger_add_dmabuf(struct wlr_drm_syncobj_merger *merger, + struct wlr_buffer *buffer, struct wl_event_loop *event_loop) { + struct wlr_dmabuf_attributes dmabuf_attributes; + if (!wlr_buffer_get_dmabuf(buffer, &dmabuf_attributes)) { + return true; + } + + bool res = true; + for (int i = 0; i < dmabuf_attributes.n_planes; ++i) { + int sync_fd = dmabuf_export_sync_file(dmabuf_attributes.fd[i], DMA_BUF_SYNC_WRITE); + if (sync_fd == -1) { + res = false; + break; + } + if (!wlr_drm_syncobj_merger_add_sync_file(merger, sync_fd)) { + return false; + } + } + + if (res) { + return true; + } + + uint32_t mask = WL_EVENT_ERROR | WL_EVENT_HANGUP | WL_EVENT_WRITABLE; + for (int i = 0; i < dmabuf_attributes.n_planes; ++i) { + struct poll_waiter *waiter = calloc(1, sizeof(*waiter)); + if (waiter == NULL) { + return false; + } + waiter->merger = wlr_drm_syncobj_merger_ref(merger); + waiter->event_source = wl_event_loop_add_fd(event_loop, + dmabuf_attributes.fd[i], mask, poll_waiter_handle_done, waiter); + if (waiter->event_source == NULL) { + wlr_drm_syncobj_merger_unref(waiter->merger); + free(waiter); + return false; + } + } + return true; +} diff --git a/types/wlr_linux_drm_syncobj_v1.c b/types/wlr_linux_drm_syncobj_v1.c index 53fc2fd43..b9865dcce 100644 --- a/types/wlr_linux_drm_syncobj_v1.c +++ b/types/wlr_linux_drm_syncobj_v1.c @@ -12,6 +12,7 @@ #include #include "config.h" #include "linux-drm-syncobj-v1-protocol.h" +#include "render/dmabuf.h" #include "render/drm_syncobj_merger.h" #define LINUX_DRM_SYNCOBJ_V1_VERSION 1 @@ -540,3 +541,12 @@ bool wlr_linux_drm_syncobj_v1_state_add_release_point( return wlr_drm_syncobj_merger_add(state->release_merger, release_timeline, release_point, event_loop); } + +bool wlr_linux_drm_syncobj_v1_state_add_release_from_implicit_sync( + struct wlr_linux_drm_syncobj_surface_v1_state *state, + struct wlr_buffer *buffer, struct wl_event_loop *event_loop) { + if (state->release_merger != NULL) { + return true; + } + return wlr_drm_syncobj_merger_add_dmabuf(state->release_merger, buffer, event_loop); +}