diff options
| -rw-r--r-- | include/wlr/types/wlr_buffer.h | 38 |
1 files changed, 29 insertions, 9 deletions
diff --git a/include/wlr/types/wlr_buffer.h b/include/wlr/types/wlr_buffer.h index 28567f26..c57d79ed 100644 --- a/include/wlr/types/wlr_buffer.h +++ b/include/wlr/types/wlr_buffer.h @@ -4,9 +4,12 @@ #include <pixman.h> #include <wayland-server.h> +/** + * A client buffer. + */ struct wlr_buffer { - struct wl_resource *resource; - struct wlr_texture *texture; + struct wl_resource *resource; // can be NULL + struct wlr_texture *texture; // can be NULL bool released; size_t n_refs; @@ -15,21 +18,38 @@ struct wlr_buffer { struct wlr_renderer; -// Checks if a resource is a wl_buffer. +/** + * Check if a resource is a wl_buffer resource. + */ bool wlr_resource_is_buffer(struct wl_resource *resource); -// Returns the buffer size. +/** + * Get the size of a wl_buffer resource. + */ bool wlr_buffer_get_resource_size(struct wl_resource *resource, struct wlr_renderer *renderer, int *width, int *height); -// Uploads the texture to the GPU and references it. +/** + * Upload a buffer to the GPU and reference it. + */ struct wlr_buffer *wlr_buffer_create(struct wlr_renderer *renderer, struct wl_resource *resource); -// References and unreferences the buffer. +/** + * Reference the buffer. + */ void wlr_buffer_ref(struct wlr_buffer *buffer); +/** + * Unreference the buffer. After this call, `buffer` may not be accessed + * anymore. + */ void wlr_buffer_unref(struct wlr_buffer *buffer); -// Tries to update the texture in the provided buffer. This destroys `buffer` -// and returns a new buffer. -// Fails if `buffer->n_refs` > 1 or if the texture isn't mutable. +/** + * Try to update the buffer's content. On success, returns the updated buffer + * and destroys the provided `buffer`. On error, `buffer` is intact and NULL is + * returned. + * + * Fails if there's more than one reference to the buffer or if the texture + * isn't mutable. + */ struct wlr_buffer *wlr_buffer_apply_damage(struct wlr_buffer *buffer, struct wl_resource *resource, pixman_region32_t *damage); |