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compositor: make renderer optional 

This is a first step towards moving texture uploading out of
wlr_compositor.

This commit allows compositors to opt-out of the texture uploading
by passing a NULL wlr_renderer. An immediate user of this is
gamescope, which currently implements a stub wlr_renderer just to
make wlr_compositor happy.
This commit is contained in:
Simon Ser 2022-11-11 16:32:59 +01:00
parent 1978a91717
commit 42016fa262
2 changed files with 15 additions and 4 deletions
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7
include/wlr/types/wlr_compositor.h
View File

@ -90,7 +90,7 @@ struct wlr_surface_output {
struct wlr_surface {
struct wl_resource *resource;
struct wlr_renderer *renderer;
struct wlr_renderer *renderer; // may be NULL
/**
* The surface's buffer, if any. A surface has an attached buffer when it
* commits with a non-null buffer in its pending state. A surface will not
@ -168,7 +168,7 @@ struct wlr_renderer;
struct wlr_compositor {
struct wl_global *global;
struct wlr_renderer *renderer;
struct wlr_renderer *renderer; // may be NULL
struct wl_listener display_destroy;
@ -305,6 +305,9 @@ void wlr_surface_unlock_cached(struct wlr_surface *surface, uint32_t seq);
/**
* Create the wl_compositor global, which can be used by clients to create
* surfaces and regions.
*
* If a renderer is supplied, the compositor will create struct wlr_texture
* objects from client buffers on surface commit.
*/
struct wlr_compositor *wlr_compositor_create(struct wl_display *display,
struct wlr_renderer *renderer);

12
types/wlr_compositor.c
View File

@ -370,6 +370,10 @@ static void surface_apply_damage(struct wlr_surface *surface) {
}
}
if (surface->renderer == NULL) {
return;
}
struct wlr_client_buffer *buffer = wlr_client_buffer_create(
surface->current.buffer, surface->renderer);
@ -699,8 +703,12 @@ static struct wlr_surface *surface_create(struct wl_client *client,
pixman_region32_init(&surface->input_region);
wlr_addon_set_init(&surface->addons);
wl_signal_add(&renderer->events.destroy, &surface->renderer_destroy);
surface->renderer_destroy.notify = surface_handle_renderer_destroy;
if (renderer != NULL) {
wl_signal_add(&renderer->events.destroy, &surface->renderer_destroy);
surface->renderer_destroy.notify = surface_handle_renderer_destroy;
} else {
wl_list_init(&surface->renderer_destroy.link);
}
return surface;
}