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Add helper to wait for DMA-BUFs to be ready on surface commit

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Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3026
This commit is contained in:
Simon Ser 2023-03-01 17:38:14 +01:00
parent 77d5631e42
commit cacf9c6713
2 changed files with 185 additions and 0 deletions
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31
include/wlr/types/wlr_linux_dmabuf_v1.h
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@ -128,4 +128,35 @@ struct wlr_linux_dmabuf_feedback_v1_init_options {
bool wlr_linux_dmabuf_feedback_v1_init_with_options(struct wlr_linux_dmabuf_feedback_v1 *feedback,
const struct wlr_linux_dmabuf_feedback_v1_init_options *options);
/**
* A helper to wait for client DMA-BUFs to be ready.
*
* When attached to a surface, this helper will delay commits until the GPU
* work is done. In other words, wlr_surface.events.commit will only fire when
* GPU buffers attached to that commit are ready.
*/
struct wlr_surface_dmabuf_waiter {
struct wlr_surface *surface;
// private state
struct wl_list commits; // wlr_surface_dmabuf_waiter_commit.link
struct wl_listener client_commit;
};
/**
* Initialize a DMA-BUF waiter for a surface.
*
* Callers must call wlr_surface_dmabuf_waiter_finish() to unregister the waiter.
*/
void wlr_surface_dmabuf_waiter_init(struct wlr_surface_dmabuf_waiter *waiter,
struct wlr_surface *surface);
/**
* Clean up a DMA-BUF waiter.
*
* Any pending commit waiting on GPU work to complete will be applied
* immediately.
*/
void wlr_surface_dmabuf_waiter_finish(struct wlr_surface_dmabuf_waiter *waiter);
#endif