diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/wlr/types/wlr_damage_ring.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/wlr/types/wlr_damage_ring.h b/include/wlr/types/wlr_damage_ring.h index d503a502..309d7ace 100644 --- a/include/wlr/types/wlr_damage_ring.h +++ b/include/wlr/types/wlr_damage_ring.h @@ -13,12 +13,22 @@ #include <stddef.h> #include <stdint.h> #include <pixman.h> +#include <wayland-server-core.h> /* For triple buffering, a history of two frames is required. */ #define WLR_DAMAGE_RING_PREVIOUS_LEN 2 +/* Keep track of as many buffers as a swapchain can hold */ +#define WLR_DAMAGE_RING_BUFFERS_LEN 4 struct wlr_box; +struct wlr_damage_ring_buffer { + struct wlr_buffer *buffer; + struct wl_listener destroy; + pixman_region32_t damage; + uint64_t seq; +}; + struct wlr_damage_ring { int32_t width, height; @@ -29,6 +39,9 @@ struct wlr_damage_ring { pixman_region32_t previous[WLR_DAMAGE_RING_PREVIOUS_LEN]; size_t previous_idx; + + uint64_t last_buffer_seq; + struct wlr_damage_ring_buffer buffers[WLR_DAMAGE_RING_BUFFERS_LEN]; }; void wlr_damage_ring_init(struct wlr_damage_ring *ring); @@ -81,4 +94,17 @@ void wlr_damage_ring_rotate(struct wlr_damage_ring *ring); void wlr_damage_ring_get_buffer_damage(struct wlr_damage_ring *ring, int buffer_age, pixman_region32_t *damage); +/** + * Get accumulated buffer damage and rotate the damage ring. + * + * The accumulated buffer damage is the difference between the to-be-painted + * buffer and the passed-in buffer. In other words, this is the region that + * needs to be redrawn. + * + * Users should damage the ring if an error occurs while rendering or + * submitting the new buffer to the backend. + */ +void wlr_damage_ring_rotate_buffer(struct wlr_damage_ring *ring, + struct wlr_buffer *buffer, pixman_region32_t *damage); + #endif |