2 * Copyright © 2013 Intel Corporation
4 * Permission to use, copy, modify, distribute, and sell this software and its
5 * documentation for any purpose is hereby granted without fee, provided that
6 * the above copyright notice appear in all copies and that both that copyright
7 * notice and this permission notice appear in supporting documentation, and
8 * that the name of the copyright holders not be used in advertising or
9 * publicity pertaining to distribution of the software without specific,
10 * written prior permission. The copyright holders make no representations
11 * about the suitability of this software for any purpose. It is provided "as
12 * is" without express or implied warranty.
14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
33 #include <sys/epoll.h>
34 #include <sys/socket.h>
38 #include <EGL/eglext.h>
39 #include <GLES2/gl2.h>
40 #include <GLES2/gl2ext.h>
44 #include <wayland-client.h>
45 #define WL_HIDE_DEPRECATED
46 #include <wayland-server.h>
50 #define MIN(x,y) (((x) < (y)) ? (x) : (y))
52 #ifndef EGL_WL_create_wayland_buffer_from_image
53 #define EGL_WL_create_wayland_buffer_from_image 1
55 #ifdef EGL_EGLEXT_PROTOTYPES
56 EGLAPI struct wl_buffer * EGLAPIENTRY eglCreateWaylandBufferFromImageWL(EGLDisplay dpy, EGLImageKHR image);
58 typedef struct wl_buffer * (EGLAPIENTRYP PFNEGLCREATEWAYLANDBUFFERFROMIMAGEWL) (EGLDisplay dpy, EGLImageKHR image);
62 static int option_blit;
65 struct display *display;
66 struct window *window;
67 struct widget *widget;
68 struct wl_display *child_display;
69 struct task child_task;
71 EGLDisplay egl_display;
72 struct program *texture_program;
74 struct wl_list surface_list;
76 const struct nested_renderer *renderer;
79 struct nested_region {
80 struct wl_resource *resource;
81 pixman_region32_t region;
84 struct nested_buffer_reference {
85 struct nested_buffer *buffer;
86 struct wl_listener destroy_listener;
89 struct nested_buffer {
90 struct wl_resource *resource;
91 struct wl_signal destroy_signal;
92 struct wl_listener destroy_listener;
95 /* A buffer in the parent compositor representing the same
96 * data. This is created on-demand when the subsurface
98 struct wl_buffer *parent_buffer;
99 /* This reference is used to mark when the parent buffer has
100 * been attached to the subsurface. It will be unrefenced when
101 * we receive a buffer release event. That way we won't inform
102 * the client that the buffer is free until the parent
103 * compositor is also finished with it */
104 struct nested_buffer_reference parent_ref;
107 struct nested_surface {
108 struct wl_resource *resource;
109 struct nested *nested;
113 struct wl_list frame_callback_list;
116 /* wl_surface.attach */
118 struct nested_buffer *buffer;
119 struct wl_listener buffer_destroy_listener;
121 /* wl_surface.frame */
122 struct wl_list frame_callback_list;
124 /* wl_surface.damage */
125 pixman_region32_t damage;
131 /* Data used for the blit renderer */
132 struct nested_blit_surface {
133 struct nested_buffer_reference buffer_ref;
135 cairo_surface_t *cairo_surface;
138 /* Data used for the subsurface renderer */
139 struct nested_ss_surface {
140 struct widget *widget;
141 struct wl_surface *surface;
142 struct wl_subsurface *subsurface;
143 struct wl_callback *frame_callback;
146 struct nested_frame_callback {
147 struct wl_resource *resource;
151 struct nested_renderer {
152 void (* surface_init)(struct nested_surface *surface);
153 void (* surface_fini)(struct nested_surface *surface);
154 void (* render_clients)(struct nested *nested, cairo_t *cr);
155 void (* surface_attach)(struct nested_surface *surface,
156 struct nested_buffer *buffer);
159 static const struct weston_option nested_options[] = {
160 { WESTON_OPTION_BOOLEAN, "blit", 'b', &option_blit },
163 static const struct nested_renderer nested_blit_renderer;
164 static const struct nested_renderer nested_ss_renderer;
166 static PFNGLEGLIMAGETARGETTEXTURE2DOESPROC image_target_texture_2d;
167 static PFNEGLCREATEIMAGEKHRPROC create_image;
168 static PFNEGLDESTROYIMAGEKHRPROC destroy_image;
169 static PFNEGLBINDWAYLANDDISPLAYWL bind_display;
170 static PFNEGLUNBINDWAYLANDDISPLAYWL unbind_display;
171 static PFNEGLQUERYWAYLANDBUFFERWL query_buffer;
172 static PFNEGLCREATEWAYLANDBUFFERFROMIMAGEWL create_wayland_buffer_from_image;
175 nested_buffer_destroy_handler(struct wl_listener *listener, void *data)
177 struct nested_buffer *buffer =
178 container_of(listener, struct nested_buffer, destroy_listener);
180 wl_signal_emit(&buffer->destroy_signal, buffer);
182 if (buffer->parent_buffer)
183 wl_buffer_destroy(buffer->parent_buffer);
188 static struct nested_buffer *
189 nested_buffer_from_resource(struct wl_resource *resource)
191 struct nested_buffer *buffer;
192 struct wl_listener *listener;
195 wl_resource_get_destroy_listener(resource,
196 nested_buffer_destroy_handler);
199 return container_of(listener, struct nested_buffer,
202 buffer = zalloc(sizeof *buffer);
206 buffer->resource = resource;
207 wl_signal_init(&buffer->destroy_signal);
208 buffer->destroy_listener.notify = nested_buffer_destroy_handler;
209 wl_resource_add_destroy_listener(resource, &buffer->destroy_listener);
215 nested_buffer_reference_handle_destroy(struct wl_listener *listener,
218 struct nested_buffer_reference *ref =
219 container_of(listener, struct nested_buffer_reference,
222 assert((struct nested_buffer *)data == ref->buffer);
227 nested_buffer_reference(struct nested_buffer_reference *ref,
228 struct nested_buffer *buffer)
230 if (buffer == ref->buffer)
234 ref->buffer->busy_count--;
235 if (ref->buffer->busy_count == 0) {
236 assert(wl_resource_get_client(ref->buffer->resource));
237 wl_resource_queue_event(ref->buffer->resource,
240 wl_list_remove(&ref->destroy_listener.link);
244 buffer->busy_count++;
245 wl_signal_add(&buffer->destroy_signal,
246 &ref->destroy_listener);
248 ref->destroy_listener.notify =
249 nested_buffer_reference_handle_destroy;
252 ref->buffer = buffer;
256 flush_surface_frame_callback_list(struct nested_surface *surface,
259 struct nested_frame_callback *nc, *next;
261 wl_list_for_each_safe(nc, next, &surface->frame_callback_list, link) {
262 wl_callback_send_done(nc->resource, time);
263 wl_resource_destroy(nc->resource);
265 wl_list_init(&surface->frame_callback_list);
267 /* FIXME: toytoolkit need a pre-block handler where we can
269 wl_display_flush_clients(surface->nested->child_display);
273 redraw_handler(struct widget *widget, void *data)
275 struct nested *nested = data;
276 cairo_surface_t *surface;
278 struct rectangle allocation;
280 widget_get_allocation(nested->widget, &allocation);
282 surface = window_get_surface(nested->window);
284 cr = cairo_create(surface);
285 cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
291 cairo_set_source_rgba(cr, 0, 0, 0, 0.8);
294 nested->renderer->render_clients(nested, cr);
298 cairo_surface_destroy(surface);
302 keyboard_focus_handler(struct window *window,
303 struct input *device, void *data)
305 struct nested *nested = data;
307 window_schedule_redraw(nested->window);
311 handle_child_data(struct task *task, uint32_t events)
313 struct nested *nested = container_of(task, struct nested, child_task);
314 struct wl_event_loop *loop;
316 loop = wl_display_get_event_loop(nested->child_display);
318 wl_event_loop_dispatch(loop, -1);
319 wl_display_flush_clients(nested->child_display);
322 struct nested_client {
323 struct wl_client *client;
327 static struct nested_client *
328 launch_client(struct nested *nested, const char *path)
332 struct nested_client *client;
334 client = malloc(sizeof *client);
338 if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, sv) < 0) {
339 fprintf(stderr, "launch_client: "
340 "socketpair failed while launching '%s': %m\n",
351 fprintf(stderr, "launch_client: "
352 "fork failed while launching '%s': %m\n", path);
360 /* SOCK_CLOEXEC closes both ends, so we dup the fd to
361 * get a non-CLOEXEC fd to pass through exec. */
362 clientfd = dup(sv[1]);
363 if (clientfd == -1) {
364 fprintf(stderr, "compositor: dup failed: %m\n");
368 snprintf(s, sizeof s, "%d", clientfd);
369 setenv("WAYLAND_SOCKET", s, 1);
371 execl(path, path, NULL);
373 fprintf(stderr, "compositor: executing '%s' failed: %m\n",
380 client->client = wl_client_create(nested->child_display, sv[0]);
381 if (!client->client) {
384 fprintf(stderr, "launch_client: "
385 "wl_client_create failed while launching '%s'.\n",
396 destroy_surface(struct wl_resource *resource)
398 struct nested_surface *surface = wl_resource_get_user_data(resource);
399 struct nested *nested = surface->nested;
400 struct nested_frame_callback *cb, *next;
402 wl_list_for_each_safe(cb, next,
403 &surface->frame_callback_list, link)
404 wl_resource_destroy(cb->resource);
406 wl_list_for_each_safe(cb, next,
407 &surface->pending.frame_callback_list, link)
408 wl_resource_destroy(cb->resource);
410 pixman_region32_fini(&surface->pending.damage);
412 nested->renderer->surface_fini(surface);
414 wl_list_remove(&surface->link);
420 surface_destroy(struct wl_client *client, struct wl_resource *resource)
422 wl_resource_destroy(resource);
426 surface_attach(struct wl_client *client,
427 struct wl_resource *resource,
428 struct wl_resource *buffer_resource, int32_t sx, int32_t sy)
430 struct nested_surface *surface = wl_resource_get_user_data(resource);
431 struct nested *nested = surface->nested;
432 struct nested_buffer *buffer = NULL;
434 if (buffer_resource) {
437 if (!query_buffer(nested->egl_display, (void *) buffer_resource,
438 EGL_TEXTURE_FORMAT, &format)) {
439 wl_resource_post_error(buffer_resource,
440 WL_DISPLAY_ERROR_INVALID_OBJECT,
441 "attaching non-egl wl_buffer");
446 case EGL_TEXTURE_RGB:
447 case EGL_TEXTURE_RGBA:
450 wl_resource_post_error(buffer_resource,
451 WL_DISPLAY_ERROR_INVALID_OBJECT,
456 buffer = nested_buffer_from_resource(buffer_resource);
457 if (buffer == NULL) {
458 wl_client_post_no_memory(client);
463 if (surface->pending.buffer)
464 wl_list_remove(&surface->pending.buffer_destroy_listener.link);
466 surface->pending.buffer = buffer;
467 surface->pending.newly_attached = 1;
469 wl_signal_add(&buffer->destroy_signal,
470 &surface->pending.buffer_destroy_listener);
475 nested_surface_attach(struct nested_surface *surface,
476 struct nested_buffer *buffer)
478 struct nested *nested = surface->nested;
480 if (surface->image != EGL_NO_IMAGE_KHR)
481 destroy_image(nested->egl_display, surface->image);
483 surface->image = create_image(nested->egl_display, NULL,
484 EGL_WAYLAND_BUFFER_WL, buffer->resource,
486 if (surface->image == EGL_NO_IMAGE_KHR) {
487 fprintf(stderr, "failed to create img\n");
491 nested->renderer->surface_attach(surface, buffer);
495 surface_damage(struct wl_client *client,
496 struct wl_resource *resource,
497 int32_t x, int32_t y, int32_t width, int32_t height)
499 struct nested_surface *surface = wl_resource_get_user_data(resource);
501 pixman_region32_union_rect(&surface->pending.damage,
502 &surface->pending.damage,
503 x, y, width, height);
507 destroy_frame_callback(struct wl_resource *resource)
509 struct nested_frame_callback *callback = wl_resource_get_user_data(resource);
511 wl_list_remove(&callback->link);
516 surface_frame(struct wl_client *client,
517 struct wl_resource *resource, uint32_t id)
519 struct nested_frame_callback *callback;
520 struct nested_surface *surface = wl_resource_get_user_data(resource);
522 callback = malloc(sizeof *callback);
523 if (callback == NULL) {
524 wl_resource_post_no_memory(resource);
528 callback->resource = wl_resource_create(client,
529 &wl_callback_interface, 1, id);
530 wl_resource_set_implementation(callback->resource, NULL, callback,
531 destroy_frame_callback);
533 wl_list_insert(surface->pending.frame_callback_list.prev,
538 surface_set_opaque_region(struct wl_client *client,
539 struct wl_resource *resource,
540 struct wl_resource *region_resource)
542 fprintf(stderr, "surface_set_opaque_region\n");
546 surface_set_input_region(struct wl_client *client,
547 struct wl_resource *resource,
548 struct wl_resource *region_resource)
550 fprintf(stderr, "surface_set_input_region\n");
554 surface_commit(struct wl_client *client, struct wl_resource *resource)
556 struct nested_surface *surface = wl_resource_get_user_data(resource);
557 struct nested *nested = surface->nested;
559 /* wl_surface.attach */
560 if (surface->pending.newly_attached)
561 nested_surface_attach(surface, surface->pending.buffer);
563 if (surface->pending.buffer) {
564 wl_list_remove(&surface->pending.buffer_destroy_listener.link);
565 surface->pending.buffer = NULL;
567 surface->pending.newly_attached = 0;
569 /* wl_surface.damage */
570 pixman_region32_clear(&surface->pending.damage);
572 /* wl_surface.frame */
573 wl_list_insert_list(&surface->frame_callback_list,
574 &surface->pending.frame_callback_list);
575 wl_list_init(&surface->pending.frame_callback_list);
577 /* FIXME: For the subsurface renderer we don't need to
578 * actually redraw the window. However we do want to cause a
579 * commit because the subsurface is synchronized. Ideally we
580 * would just queue the commit */
581 window_schedule_redraw(nested->window);
585 surface_set_buffer_transform(struct wl_client *client,
586 struct wl_resource *resource, int transform)
588 fprintf(stderr, "surface_set_buffer_transform\n");
591 static const struct wl_surface_interface surface_interface = {
596 surface_set_opaque_region,
597 surface_set_input_region,
599 surface_set_buffer_transform
603 surface_handle_pending_buffer_destroy(struct wl_listener *listener, void *data)
605 struct nested_surface *surface =
606 container_of(listener, struct nested_surface,
607 pending.buffer_destroy_listener);
609 surface->pending.buffer = NULL;
613 compositor_create_surface(struct wl_client *client,
614 struct wl_resource *resource, uint32_t id)
616 struct nested *nested = wl_resource_get_user_data(resource);
617 struct nested_surface *surface;
619 surface = zalloc(sizeof *surface);
620 if (surface == NULL) {
621 wl_resource_post_no_memory(resource);
625 surface->nested = nested;
627 wl_list_init(&surface->frame_callback_list);
629 wl_list_init(&surface->pending.frame_callback_list);
630 surface->pending.buffer_destroy_listener.notify =
631 surface_handle_pending_buffer_destroy;
632 pixman_region32_init(&surface->pending.damage);
634 display_acquire_window_surface(nested->display,
635 nested->window, NULL);
637 nested->renderer->surface_init(surface);
639 display_release_window_surface(nested->display, nested->window);
642 wl_resource_create(client, &wl_surface_interface, 1, id);
644 wl_resource_set_implementation(surface->resource,
645 &surface_interface, surface,
648 wl_list_insert(nested->surface_list.prev, &surface->link);
652 destroy_region(struct wl_resource *resource)
654 struct nested_region *region = wl_resource_get_user_data(resource);
656 pixman_region32_fini(®ion->region);
661 region_destroy(struct wl_client *client, struct wl_resource *resource)
663 wl_resource_destroy(resource);
667 region_add(struct wl_client *client, struct wl_resource *resource,
668 int32_t x, int32_t y, int32_t width, int32_t height)
670 struct nested_region *region = wl_resource_get_user_data(resource);
672 pixman_region32_union_rect(®ion->region, ®ion->region,
673 x, y, width, height);
677 region_subtract(struct wl_client *client, struct wl_resource *resource,
678 int32_t x, int32_t y, int32_t width, int32_t height)
680 struct nested_region *region = wl_resource_get_user_data(resource);
681 pixman_region32_t rect;
683 pixman_region32_init_rect(&rect, x, y, width, height);
684 pixman_region32_subtract(®ion->region, ®ion->region, &rect);
685 pixman_region32_fini(&rect);
688 static const struct wl_region_interface region_interface = {
695 compositor_create_region(struct wl_client *client,
696 struct wl_resource *resource, uint32_t id)
698 struct nested_region *region;
700 region = malloc(sizeof *region);
701 if (region == NULL) {
702 wl_resource_post_no_memory(resource);
706 pixman_region32_init(®ion->region);
709 wl_resource_create(client, &wl_region_interface, 1, id);
710 wl_resource_set_implementation(region->resource, ®ion_interface,
711 region, destroy_region);
714 static const struct wl_compositor_interface compositor_interface = {
715 compositor_create_surface,
716 compositor_create_region
720 compositor_bind(struct wl_client *client,
721 void *data, uint32_t version, uint32_t id)
723 struct nested *nested = data;
724 struct wl_resource *resource;
726 resource = wl_resource_create(client, &wl_compositor_interface,
727 MIN(version, 3), id);
728 wl_resource_set_implementation(resource, &compositor_interface,
733 nested_init_compositor(struct nested *nested)
735 const char *extensions;
736 struct wl_event_loop *loop;
737 int use_ss_renderer = 0;
740 wl_list_init(&nested->surface_list);
741 nested->child_display = wl_display_create();
742 loop = wl_display_get_event_loop(nested->child_display);
743 fd = wl_event_loop_get_fd(loop);
744 nested->child_task.run = handle_child_data;
745 display_watch_fd(nested->display, fd,
746 EPOLLIN, &nested->child_task);
748 if (!wl_global_create(nested->child_display,
749 &wl_compositor_interface, 1,
750 nested, compositor_bind))
753 wl_display_init_shm(nested->child_display);
755 nested->egl_display = display_get_egl_display(nested->display);
756 extensions = eglQueryString(nested->egl_display, EGL_EXTENSIONS);
757 if (strstr(extensions, "EGL_WL_bind_wayland_display") == NULL) {
758 fprintf(stderr, "no EGL_WL_bind_wayland_display extension\n");
762 bind_display = (void *) eglGetProcAddress("eglBindWaylandDisplayWL");
763 unbind_display = (void *) eglGetProcAddress("eglUnbindWaylandDisplayWL");
764 create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
765 destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
766 query_buffer = (void *) eglGetProcAddress("eglQueryWaylandBufferWL");
767 image_target_texture_2d =
768 (void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
770 ret = bind_display(nested->egl_display, nested->child_display);
772 fprintf(stderr, "failed to bind wl_display\n");
776 if (display_has_subcompositor(nested->display)) {
777 const char *func = "eglCreateWaylandBufferFromImageWL";
778 const char *ext = "EGL_WL_create_wayland_buffer_from_image";
780 if (strstr(extensions, ext)) {
781 create_wayland_buffer_from_image =
782 (void *) eglGetProcAddress(func);
790 if (use_ss_renderer) {
791 printf("Using subsurfaces to render client surfaces\n");
792 nested->renderer = &nested_ss_renderer;
794 printf("Using local compositing with blits to "
795 "render client surfaces\n");
796 nested->renderer = &nested_blit_renderer;
802 static struct nested *
803 nested_create(struct display *display)
805 struct nested *nested;
807 nested = zalloc(sizeof *nested);
811 nested->window = window_create(display);
812 nested->widget = window_frame_create(nested->window, nested);
813 window_set_title(nested->window, "Wayland Nested");
814 nested->display = display;
816 window_set_user_data(nested->window, nested);
817 widget_set_redraw_handler(nested->widget, redraw_handler);
818 window_set_keyboard_focus_handler(nested->window,
819 keyboard_focus_handler);
821 nested_init_compositor(nested);
823 widget_schedule_resize(nested->widget, 400, 400);
829 nested_destroy(struct nested *nested)
831 widget_destroy(nested->widget);
832 window_destroy(nested->window);
836 /*** blit renderer ***/
839 blit_surface_init(struct nested_surface *surface)
841 struct nested_blit_surface *blit_surface =
842 xzalloc(sizeof *blit_surface);
844 glGenTextures(1, &blit_surface->texture);
845 glBindTexture(GL_TEXTURE_2D, blit_surface->texture);
846 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
847 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
848 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
849 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
851 surface->renderer_data = blit_surface;
855 blit_surface_fini(struct nested_surface *surface)
857 struct nested_blit_surface *blit_surface = surface->renderer_data;
859 nested_buffer_reference(&blit_surface->buffer_ref, NULL);
861 glDeleteTextures(1, &blit_surface->texture);
867 blit_frame_callback(void *data, struct wl_callback *callback, uint32_t time)
869 struct nested *nested = data;
870 struct nested_surface *surface;
872 wl_list_for_each(surface, &nested->surface_list, link)
873 flush_surface_frame_callback_list(surface, time);
876 wl_callback_destroy(callback);
879 static const struct wl_callback_listener blit_frame_listener = {
884 blit_render_clients(struct nested *nested,
887 struct nested_surface *s;
888 struct rectangle allocation;
889 struct wl_callback *callback;
891 widget_get_allocation(nested->widget, &allocation);
893 wl_list_for_each(s, &nested->surface_list, link) {
894 struct nested_blit_surface *blit_surface = s->renderer_data;
896 display_acquire_window_surface(nested->display,
897 nested->window, NULL);
899 glBindTexture(GL_TEXTURE_2D, blit_surface->texture);
900 image_target_texture_2d(GL_TEXTURE_2D, s->image);
902 display_release_window_surface(nested->display,
905 cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
906 cairo_set_source_surface(cr, blit_surface->cairo_surface,
909 cairo_rectangle(cr, allocation.x + 10,
911 allocation.width - 10,
912 allocation.height - 10);
917 callback = wl_surface_frame(window_get_wl_surface(nested->window));
918 wl_callback_add_listener(callback, &blit_frame_listener, nested);
922 blit_surface_attach(struct nested_surface *surface,
923 struct nested_buffer *buffer)
925 struct nested *nested = surface->nested;
926 struct nested_blit_surface *blit_surface = surface->renderer_data;
927 EGLint width, height;
928 cairo_device_t *device;
930 nested_buffer_reference(&blit_surface->buffer_ref, buffer);
932 if (blit_surface->cairo_surface)
933 cairo_surface_destroy(blit_surface->cairo_surface);
935 query_buffer(nested->egl_display, (void *) buffer->resource,
937 query_buffer(nested->egl_display, (void *) buffer->resource,
938 EGL_HEIGHT, &height);
940 device = display_get_cairo_device(nested->display);
941 blit_surface->cairo_surface =
942 cairo_gl_surface_create_for_texture(device,
943 CAIRO_CONTENT_COLOR_ALPHA,
944 blit_surface->texture,
948 static const struct nested_renderer
949 nested_blit_renderer = {
950 .surface_init = blit_surface_init,
951 .surface_fini = blit_surface_fini,
952 .render_clients = blit_render_clients,
953 .surface_attach = blit_surface_attach
956 /*** subsurface renderer ***/
959 ss_surface_init(struct nested_surface *surface)
961 struct nested *nested = surface->nested;
962 struct wl_compositor *compositor =
963 display_get_compositor(nested->display);
964 struct nested_ss_surface *ss_surface =
965 xzalloc(sizeof *ss_surface);
966 struct rectangle allocation;
967 struct wl_region *region;
970 window_add_subsurface(nested->window,
972 SUBSURFACE_SYNCHRONIZED);
974 widget_set_use_cairo(ss_surface->widget, 0);
976 ss_surface->surface = widget_get_wl_surface(ss_surface->widget);
977 ss_surface->subsurface = widget_get_wl_subsurface(ss_surface->widget);
979 /* The toy toolkit gets confused about the pointer position
980 * when it gets motion events for a subsurface so we'll just
981 * disable input on it */
982 region = wl_compositor_create_region(compositor);
983 wl_surface_set_input_region(ss_surface->surface, region);
984 wl_region_destroy(region);
986 widget_get_allocation(nested->widget, &allocation);
987 wl_subsurface_set_position(ss_surface->subsurface,
991 surface->renderer_data = ss_surface;
995 ss_surface_fini(struct nested_surface *surface)
997 struct nested_ss_surface *ss_surface = surface->renderer_data;
999 widget_destroy(ss_surface->widget);
1001 if (ss_surface->frame_callback)
1002 wl_callback_destroy(ss_surface->frame_callback);
1008 ss_render_clients(struct nested *nested,
1011 /* The clients are composited by the parent compositor so we
1012 * don't need to do anything here */
1016 ss_buffer_release(void *data, struct wl_buffer *wl_buffer)
1018 struct nested_buffer *buffer = data;
1020 nested_buffer_reference(&buffer->parent_ref, NULL);
1023 static struct wl_buffer_listener ss_buffer_listener = {
1028 ss_frame_callback(void *data, struct wl_callback *callback, uint32_t time)
1030 struct nested_surface *surface = data;
1031 struct nested_ss_surface *ss_surface = surface->renderer_data;
1033 flush_surface_frame_callback_list(surface, time);
1036 wl_callback_destroy(callback);
1038 ss_surface->frame_callback = NULL;
1041 static const struct wl_callback_listener ss_frame_listener = {
1046 ss_surface_attach(struct nested_surface *surface,
1047 struct nested_buffer *buffer)
1049 struct nested *nested = surface->nested;
1050 struct nested_ss_surface *ss_surface = surface->renderer_data;
1051 struct wl_buffer *parent_buffer;
1052 const pixman_box32_t *rects;
1056 /* Create a representation of the buffer in the parent
1057 * compositor if we haven't already */
1058 if (buffer->parent_buffer == NULL) {
1059 EGLDisplay *edpy = nested->egl_display;
1060 EGLImageKHR image = surface->image;
1062 buffer->parent_buffer =
1063 create_wayland_buffer_from_image(edpy, image);
1065 wl_buffer_add_listener(buffer->parent_buffer,
1066 &ss_buffer_listener,
1070 parent_buffer = buffer->parent_buffer;
1072 /* We'll take a reference to the buffer while the parent
1073 * compositor is using it so that we won't report the release
1074 * event until the parent has also finished with it */
1075 nested_buffer_reference(&buffer->parent_ref, buffer);
1077 parent_buffer = NULL;
1080 wl_surface_attach(ss_surface->surface, parent_buffer, 0, 0);
1082 rects = pixman_region32_rectangles(&surface->pending.damage, &n_rects);
1084 for (i = 0; i < n_rects; i++) {
1085 const pixman_box32_t *rect = rects + i;
1086 wl_surface_damage(ss_surface->surface,
1089 rect->x2 - rect->x1,
1090 rect->y2 - rect->y1);
1093 if (ss_surface->frame_callback)
1094 wl_callback_destroy(ss_surface->frame_callback);
1096 ss_surface->frame_callback = wl_surface_frame(ss_surface->surface);
1097 wl_callback_add_listener(ss_surface->frame_callback,
1101 wl_surface_commit(ss_surface->surface);
1104 static const struct nested_renderer
1105 nested_ss_renderer = {
1106 .surface_init = ss_surface_init,
1107 .surface_fini = ss_surface_fini,
1108 .render_clients = ss_render_clients,
1109 .surface_attach = ss_surface_attach
1113 main(int argc, char *argv[])
1115 struct display *display;
1116 struct nested *nested;
1118 if (parse_options(nested_options,
1119 ARRAY_LENGTH(nested_options), &argc, argv) > 1) {
1120 printf("Usage: %s [OPTIONS]\n --blit or -b\n", argv[0]);
1124 display = display_create(&argc, argv);
1125 if (display == NULL) {
1126 fprintf(stderr, "failed to create display: %m\n");
1130 nested = nested_create(display);
1132 launch_client(nested, "weston-nested-client");
1134 display_run(display);
1136 nested_destroy(nested);
1137 display_destroy(display);