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render/texture: Emit signals on destroy and update

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This allows compositors to track the texture life cycle.

Allows e.g. compositors using the GLES2 renderer to know
when the texture gotten via `wlr_gles2_texture_get_attribs()`
changes.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
This commit is contained in:
Guido Günther 2026-04-19 16:14:19 +02:00
parent e8c03e9ce9
commit eb2a36de69
2 changed files with 21 additions and 1 deletions
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5
include/wlr/render/wlr_texture.h
View file

@ -24,6 +24,11 @@ struct wlr_texture {
uint32_t width, height;
struct wlr_renderer *renderer;
struct {
struct wl_signal destroy;
struct wl_signal updated;
} events;
};
struct wlr_texture_read_pixels_options {

17
render/wlr_texture.c
View file

@ -18,9 +18,17 @@ void wlr_texture_init(struct wlr_texture *texture, struct wlr_renderer *renderer
.width = width,
.height = height,
};
wl_signal_init(&texture->events.destroy);
wl_signal_init(&texture->events.updated);
}
void wlr_texture_destroy(struct wlr_texture *texture) {
wl_signal_emit(&texture->events.destroy, NULL);
assert(wl_list_empty(&texture->events.destroy.listener_list));
assert(wl_list_empty(&texture->events.updated.listener_list));
if (texture && texture->impl && texture->impl->destroy) {
texture->impl->destroy(texture);
} else {
@ -133,5 +141,12 @@ bool wlr_texture_update_from_buffer(struct wlr_texture *texture,
extents->y2 > buffer->height) {
return false;
}
return texture->impl->update_from_buffer(texture, buffer, damage);
bool ret = texture->impl->update_from_buffer(texture, buffer, damage);
if (!ret) {
return false;
}
wl_signal_emit (&texture->events.updated, NULL);
return true;
}