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render/timeline: add wlr_render_timeline_transfer

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This commit is contained in:
Simon Ser 2021-10-21 15:23:20 +02:00
parent 3096cf7964
commit 43df0bd565
2 changed files with 21 additions and 0 deletions
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7
include/wlr/render/timeline.h
View file

@ -39,6 +39,13 @@ struct wlr_render_timeline *wlr_render_timeline_import(int drm_fd,
* Destroy a synchronization timeline.
*/
void wlr_render_timeline_destroy(struct wlr_render_timeline *timeline);
/**
* Transfer a point from a timeline to another.
*
* Both timelines must have been created with the same DRM FD.
*/
bool wlr_render_timeline_transfer(struct wlr_render_timeline *dst,
uint64_t dst_point, struct wlr_render_timeline *src, uint64_t src_point);
/**
* Export a timeline point as a sync_file FD.
*

14
render/timeline.c
View file

@ -1,3 +1,4 @@
#include <assert.h>
#include <linux/dma-buf.h>
#include <stdlib.h>
#include <unistd.h>
@ -48,6 +49,19 @@ void wlr_render_timeline_destroy(struct wlr_render_timeline *timeline) {
free(timeline);
}
bool wlr_render_timeline_transfer(struct wlr_render_timeline *dst,
uint64_t dst_point, struct wlr_render_timeline *src, uint64_t src_point) {
assert(dst->drm_fd == src->drm_fd);
if (drmSyncobjTransfer(dst->drm_fd, dst->handle, dst_point,
src->handle, src_point, 0) != 0) {
wlr_log_errno(WLR_ERROR, "drmSyncobjTransfer failed");
return false;
}
return true;
}
int wlr_render_timeline_export_sync_file(struct wlr_render_timeline *timeline,
uint64_t src_point) {
int sync_file_fd = -1;