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backend/x11: re-use pixmaps

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Instead of re-importing a buffer each time we submit a frame, re-use the
pixmaps if possible.
This commit is contained in:
Simon Ser 2020-12-12 13:12:06 +01:00
parent defcd9b025
commit d6dbdd97e9
2 changed files with 35 additions and 10 deletions
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44
backend/x11/output.c
View file

@ -132,7 +132,24 @@ static bool output_test(struct wlr_output *wlr_output) {
return true;
}
static struct wlr_x11_buffer *import_x11_buffer(struct wlr_x11_output *output,
static void destroy_x11_buffer(struct wlr_x11_buffer *buffer) {
if (!buffer) {
return;
}
wl_list_remove(&buffer->buffer_destroy.link);
wl_list_remove(&buffer->link);
xcb_free_pixmap(buffer->x11->xcb, buffer->pixmap);
free(buffer);
}
static void buffer_handle_buffer_destroy(struct wl_listener *listener,
void *data) {
struct wlr_x11_buffer *buffer =
wl_container_of(listener, buffer, buffer_destroy);
destroy_x11_buffer(buffer);
}
static struct wlr_x11_buffer *create_x11_buffer(struct wlr_x11_output *output,
struct wlr_buffer *wlr_buffer) {
struct wlr_x11_backend *x11 = output->x11;
@ -170,17 +187,24 @@ static struct wlr_x11_buffer *import_x11_buffer(struct wlr_x11_output *output,
buffer->pixmap = pixmap;
buffer->x11 = x11;
wl_list_insert(&output->buffers, &buffer->link);
buffer->buffer_destroy.notify = buffer_handle_buffer_destroy;
wl_signal_add(&wlr_buffer->events.destroy, &buffer->buffer_destroy);
return buffer;
}
static void destroy_x11_buffer(struct wlr_x11_buffer *buffer) {
if (!buffer) {
return;
static struct wlr_x11_buffer *get_or_create_x11_buffer(
struct wlr_x11_output *output, struct wlr_buffer *wlr_buffer) {
struct wlr_x11_buffer *buffer;
wl_list_for_each(buffer, &output->buffers, link) {
if (buffer->buffer == wlr_buffer) {
wlr_buffer_lock(buffer->buffer);
return buffer;
}
wl_list_remove(&buffer->link);
xcb_free_pixmap(buffer->x11->xcb, buffer->pixmap);
wlr_buffer_unlock(buffer->buffer);
free(buffer);
}
return create_x11_buffer(output, wlr_buffer);
}
static bool output_commit_buffer(struct wlr_x11_output *output) {
@ -192,7 +216,7 @@ static bool output_commit_buffer(struct wlr_x11_output *output) {
wlr_egl_unset_current(&x11->egl);
struct wlr_x11_buffer *x11_buffer =
import_x11_buffer(output, output->back_buffer);
get_or_create_x11_buffer(output, output->back_buffer);
if (!x11_buffer) {
goto error;
}
@ -502,7 +526,7 @@ void handle_x11_present_event(struct wlr_x11_backend *x11,
return;
}
destroy_x11_buffer(buffer);
wlr_buffer_unlock(buffer->buffer); // may destroy buffer
break;
case XCB_PRESENT_COMPLETE_NOTIFY:;
xcb_present_complete_notify_event_t *complete_notify =

1
include/backend/x11.h
View file

@ -115,6 +115,7 @@ struct wlr_x11_buffer {
struct wlr_buffer *buffer;
xcb_pixmap_t pixmap;
struct wl_list link; // wlr_x11_output::buffers
struct wl_listener buffer_destroy;
};
struct wlr_x11_format {