--- /dev/null
+/*
+ * Copyright © 2011 Benjamin Franzke
+ * Copyright © 2010 Intel Corporation
+ * Copyright © 2014 Collabora, Ltd.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+#include <assert.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <signal.h>
+#include <time.h>
+
+#include <wayland-client.h>
+#include "../shared/os-compatibility.h"
+#include "presentation_timing-client-protocol.h"
+
+#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0])
+
+enum run_mode {
+ RUN_MODE_FEEDBACK,
+ RUN_MODE_FEEDBACK_IDLE,
+ RUN_MODE_PRESENT,
+};
+
+struct output {
+ struct wl_output *output;
+ uint32_t name;
+ struct wl_list link;
+};
+
+struct display {
+ struct wl_display *display;
+ struct wl_registry *registry;
+ struct wl_compositor *compositor;
+ struct wl_shell *shell;
+
+ struct wl_shm *shm;
+ uint32_t formats;
+
+ struct presentation *presentation;
+ clockid_t clk_id;
+
+ struct wl_list output_list; /* struct output::link */
+};
+
+struct feedback {
+ struct window *window;
+ unsigned frame_no;
+ struct presentation_feedback *feedback;
+ struct timespec commit;
+ struct timespec target;
+ uint32_t frame_stamp;
+ struct wl_list link;
+ struct timespec present;
+};
+
+struct buffer {
+ struct wl_buffer *buffer;
+ void *shm_data;
+ int busy;
+};
+
+struct window {
+ struct display *display;
+ int width, height;
+ enum run_mode mode;
+ struct wl_surface *surface;
+ struct wl_shell_surface *shell_surface;
+
+ struct buffer *buffers;
+ int num_buffers;
+ int next;
+ int refresh_nsec;
+
+ struct wl_callback *callback;
+ struct wl_list feedback_list;
+
+ struct feedback *received_feedback;
+};
+
+#define NSEC_PER_SEC 1000000000
+
+static void
+buffer_release(void *data, struct wl_buffer *buffer)
+{
+ struct buffer *mybuf = data;
+
+ mybuf->busy = 0;
+}
+
+static const struct wl_buffer_listener buffer_listener = {
+ buffer_release
+};
+
+static int
+create_shm_buffers(struct display *display, struct buffer **buffers,
+ int num_buffers, int width, int height, uint32_t format)
+{
+ struct buffer *bufs;
+ struct wl_shm_pool *pool;
+ int fd, size, stride, offset;
+ void *data;
+ int i;
+
+ stride = width * 4;
+ size = stride * height * num_buffers;
+
+ fd = os_create_anonymous_file(size);
+ if (fd < 0) {
+ fprintf(stderr, "creating a buffer file for %d B failed: %m\n",
+ size);
+ return -1;
+ }
+
+ data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+ if (data == MAP_FAILED) {
+ fprintf(stderr, "mmap failed: %m\n");
+ close(fd);
+ return -1;
+ }
+
+ pool = wl_shm_create_pool(display->shm, fd, size);
+ offset = 0;
+
+ bufs = calloc(num_buffers, sizeof(*bufs));
+ assert(bufs);
+
+ for (i = 0; i < num_buffers; i++) {
+ bufs[i].buffer = wl_shm_pool_create_buffer(pool, offset,
+ width, height,
+ stride, format);
+ assert(bufs[i].buffer);
+ wl_buffer_add_listener(bufs[i].buffer,
+ &buffer_listener, &bufs[i]);
+
+ bufs[i].shm_data = (char *)data + offset;
+ offset += stride * height;
+ }
+
+ wl_shm_pool_destroy(pool);
+ close(fd);
+
+ *buffers = bufs;
+
+ return 0;
+}
+
+static void
+handle_ping(void *data, struct wl_shell_surface *shell_surface,
+ uint32_t serial)
+{
+ wl_shell_surface_pong(shell_surface, serial);
+}
+
+static void
+handle_configure(void *data, struct wl_shell_surface *shell_surface,
+ uint32_t edges, int32_t width, int32_t height)
+{
+}
+
+static void
+handle_popup_done(void *data, struct wl_shell_surface *shell_surface)
+{
+}
+
+static const struct wl_shell_surface_listener shell_surface_listener = {
+ handle_ping,
+ handle_configure,
+ handle_popup_done
+};
+
+static struct window *
+create_window(struct display *display, int width, int height,
+ enum run_mode mode)
+{
+ struct window *window;
+ int ret;
+
+ window = calloc(1, sizeof *window);
+ if (!window)
+ return NULL;
+
+ window->mode = mode;
+ window->callback = NULL;
+ wl_list_init(&window->feedback_list);
+ window->display = display;
+ window->width = width;
+ window->height = height;
+ window->surface = wl_compositor_create_surface(display->compositor);
+ window->shell_surface = wl_shell_get_shell_surface(display->shell,
+ window->surface);
+
+ if (window->shell_surface)
+ wl_shell_surface_add_listener(window->shell_surface,
+ &shell_surface_listener, window);
+
+ wl_shell_surface_set_title(window->shell_surface, "presentation-shm");
+
+ wl_shell_surface_set_toplevel(window->shell_surface);
+
+ window->num_buffers = 60;
+ window->refresh_nsec = NSEC_PER_SEC / 60; /* 60 Hz guess */
+ window->next = 0;
+ ret = create_shm_buffers(window->display,
+ &window->buffers, window->num_buffers,
+ window->width, window->height,
+ WL_SHM_FORMAT_XRGB8888);
+ assert(ret == 0);
+
+ return window;
+}
+
+static void
+destroy_feedback(struct feedback *feedback)
+{
+ if (feedback->feedback)
+ presentation_feedback_destroy(feedback->feedback);
+
+ wl_list_remove(&feedback->link);
+ free(feedback);
+}
+
+static void
+destroy_window(struct window *window)
+{
+ int i;
+
+ while (!wl_list_empty(&window->feedback_list)) {
+ struct feedback *f;
+
+ f = wl_container_of(window->feedback_list.next, f, link);
+ printf("clean up feedback %u\n", f->frame_no);
+ destroy_feedback(f);
+ }
+
+ if (window->callback)
+ wl_callback_destroy(window->callback);
+
+ wl_shell_surface_destroy(window->shell_surface);
+ wl_surface_destroy(window->surface);
+
+ for (i = 0; i < window->num_buffers; i++)
+ wl_buffer_destroy(window->buffers[i].buffer);
+ /* munmap(window->buffers[0].shm_data, size); */
+ free(window->buffers);
+
+ free(window);
+}
+
+static struct buffer *
+window_next_buffer(struct window *window)
+{
+ struct buffer *buf = &window->buffers[window->next];
+
+ window->next = (window->next + 1) % window->num_buffers;
+
+ return buf;
+}
+
+static void
+paint_pixels(void *image, int width, int height, uint32_t phase)
+{
+ const int halfh = height / 2;
+ const int halfw = width / 2;
+ uint32_t *pixel = image;
+ int y, or;
+ double ang = M_PI * 2.0 / 1000000.0 * phase;
+ double s = sin(ang);
+ double c = cos(ang);
+
+ /* squared radii thresholds */
+ or = (halfw < halfh ? halfw : halfh) - 16;
+ or *= or;
+
+ for (y = 0; y < height; y++) {
+ int x;
+ int oy = y - halfh;
+ int y2 = oy * oy;
+
+ for (x = 0; x < width; x++) {
+ int ox = x - halfw;
+ uint32_t v = 0xff000000;
+ double rx, ry;
+
+ if (ox * ox + y2 > or) {
+ if (ox * oy > 0)
+ *pixel++ = 0xff000000;
+ else
+ *pixel++ = 0xffffffff;
+ continue;
+ }
+
+ rx = c * ox + s * oy;
+ ry = -s * ox + c * oy;
+
+ if (rx < 0.0)
+ v |= 0x00ff0000;
+ if (ry < 0.0)
+ v |= 0x0000ff00;
+ if ((rx < 0.0) == (ry < 0.0))
+ v |= 0x000000ff;
+
+ *pixel++ = v;
+ }
+ }
+}
+
+static void
+feedback_sync_output(void *data,
+ struct presentation_feedback *presentation_feedback,
+ struct wl_output *output)
+{
+ /* not interested */
+}
+
+static char *
+pflags_to_str(uint32_t flags, char *str, unsigned len)
+{
+ static const struct {
+ uint32_t flag;
+ char sym;
+ } desc[] = {
+ { 1, '1' }, /* dummy placeholder */
+ };
+ unsigned i;
+
+ *str = '\0';
+ if (len < ARRAY_LENGTH(desc) + 1)
+ return str;
+
+ for (i = 0; i < ARRAY_LENGTH(desc); i++)
+ str[i] = flags & desc[i].flag ? desc[i].sym : '_';
+ str[ARRAY_LENGTH(desc)] = '\0';
+
+ return str;
+}
+
+static uint32_t
+timespec_to_ms(const struct timespec *ts)
+{
+ return (uint32_t)ts->tv_sec * 1000 + ts->tv_nsec / 1000000;
+}
+
+static void
+timespec_from_proto(struct timespec *tm, uint32_t tv_sec_hi,
+ uint32_t tv_sec_lo, uint32_t tv_nsec)
+{
+ tm->tv_sec = ((uint64_t)tv_sec_hi << 32) + tv_sec_lo;
+ tm->tv_nsec = tv_nsec;
+}
+
+static int
+timespec_diff_to_usec(const struct timespec *a, const struct timespec *b)
+{
+ time_t secs = a->tv_sec - b->tv_sec;
+ long nsec = a->tv_nsec - b->tv_nsec;
+
+ return secs * 1000000 + nsec / 1000;
+}
+
+static void
+feedback_presented(void *data,
+ struct presentation_feedback *presentation_feedback,
+ uint32_t tv_sec_hi,
+ uint32_t tv_sec_lo,
+ uint32_t tv_nsec,
+ uint32_t refresh_nsec,
+ uint32_t seq_hi,
+ uint32_t seq_lo,
+ uint32_t flags)
+{
+ struct feedback *feedback = data;
+ struct window *window = feedback->window;
+ struct feedback *prev_feedback = window->received_feedback;
+ uint64_t seq = ((uint64_t)seq_hi << 32) + seq_lo;
+ const struct timespec *prevpresent;
+ uint32_t commit, present;
+ uint32_t f2c, c2p, f2p;
+ int p2p, t2p;
+ char flagstr[10];
+
+ timespec_from_proto(&feedback->present, tv_sec_hi, tv_sec_lo, tv_nsec);
+ commit = timespec_to_ms(&feedback->commit);
+ present = timespec_to_ms(&feedback->present);
+
+ if (prev_feedback)
+ prevpresent = &prev_feedback->present;
+ else
+ prevpresent = &feedback->present;
+
+ f2c = commit - feedback->frame_stamp;
+ c2p = present - commit;
+ f2p = present - feedback->frame_stamp;
+ p2p = timespec_diff_to_usec(&feedback->present, prevpresent);
+ t2p = timespec_diff_to_usec(&feedback->present, &feedback->target);
+
+ switch (window->mode) {
+ case RUN_MODE_PRESENT:
+ printf("%6u: c2p %4u ms, p2p %5d us, t2p %6d us, [%s] "
+ "seq %" PRIu64 "\n", feedback->frame_no, c2p,
+ p2p, t2p,
+ pflags_to_str(flags, flagstr, sizeof(flagstr)), seq);
+ break;
+ case RUN_MODE_FEEDBACK:
+ case RUN_MODE_FEEDBACK_IDLE:
+ printf("%6u: f2c %2u ms, c2p %2u ms, f2p %2u ms, p2p %5d us, "
+ "t2p %6d, [%s], seq %" PRIu64 "\n", feedback->frame_no,
+ f2c, c2p, f2p, p2p, t2p,
+ pflags_to_str(flags, flagstr, sizeof(flagstr)), seq);
+ }
+
+ if (window->received_feedback)
+ destroy_feedback(window->received_feedback);
+ window->received_feedback = feedback;
+}
+
+static void
+feedback_discarded(void *data,
+ struct presentation_feedback *presentation_feedback)
+{
+ struct feedback *feedback = data;
+
+ printf("discarded %u\n", feedback->frame_no);
+
+ destroy_feedback(feedback);
+}
+
+static const struct presentation_feedback_listener feedback_listener = {
+ feedback_sync_output,
+ feedback_presented,
+ feedback_discarded
+};
+
+static void
+window_create_feedback(struct window *window, uint32_t frame_stamp)
+{
+ static unsigned seq;
+ struct presentation *pres = window->display->presentation;
+ struct feedback *feedback;
+
+ seq++;
+
+ if (!pres)
+ return;
+
+ feedback = calloc(1, sizeof *feedback);
+ if (!feedback)
+ return;
+
+ feedback->window = window;
+ feedback->feedback = presentation_feedback(pres, window->surface);
+ presentation_feedback_add_listener(feedback->feedback,
+ &feedback_listener, feedback);
+
+ feedback->frame_no = seq;
+ clock_gettime(window->display->clk_id, &feedback->commit);
+ feedback->frame_stamp = frame_stamp;
+ feedback->target = feedback->commit;
+
+ wl_list_insert(&window->feedback_list, &feedback->link);
+}
+
+static void
+window_commit_next(struct window *window)
+{
+ struct buffer *buffer;
+
+ buffer = window_next_buffer(window);
+ assert(buffer);
+
+ wl_surface_attach(window->surface, buffer->buffer, 0, 0);
+ wl_surface_damage(window->surface, 0, 0, window->width, window->height);
+ wl_surface_commit(window->surface);
+ buffer->busy = 1;
+}
+
+static const struct wl_callback_listener frame_listener_mode_feedback;
+
+static void
+redraw_mode_feedback(void *data, struct wl_callback *callback, uint32_t time)
+{
+ struct window *window = data;
+
+ if (callback && window->mode == RUN_MODE_FEEDBACK_IDLE)
+ sleep(1);
+
+ if (callback)
+ wl_callback_destroy(callback);
+
+ window->callback = wl_surface_frame(window->surface);
+ wl_callback_add_listener(window->callback,
+ &frame_listener_mode_feedback, window);
+
+ window_create_feedback(window, time);
+ window_commit_next(window);
+}
+
+static const struct wl_callback_listener frame_listener_mode_feedback = {
+ redraw_mode_feedback
+};
+
+static const struct presentation_feedback_listener feedkick_listener;
+
+static void
+window_feedkick(struct window *window)
+{
+ struct presentation *pres = window->display->presentation;
+ struct presentation_feedback *fback;
+
+ fback = presentation_feedback(pres, window->surface);
+ presentation_feedback_add_listener(fback, &feedkick_listener, window);
+}
+
+static void
+feedkick_presented(void *data,
+ struct presentation_feedback *presentation_feedback,
+ uint32_t tv_sec_hi,
+ uint32_t tv_sec_lo,
+ uint32_t tv_nsec,
+ uint32_t refresh_nsec,
+ uint32_t seq_hi,
+ uint32_t seq_lo,
+ uint32_t flags)
+{
+ struct window *window = data;
+
+ presentation_feedback_destroy(presentation_feedback);
+ window->refresh_nsec = refresh_nsec;
+
+ switch (window->mode) {
+ case RUN_MODE_PRESENT:
+ window_create_feedback(window, 0);
+ window_feedkick(window);
+ window_commit_next(window);
+ break;
+ case RUN_MODE_FEEDBACK:
+ case RUN_MODE_FEEDBACK_IDLE:
+ assert(0 && "bad mode");
+ }
+}
+
+static void
+feedkick_discarded(void *data,
+ struct presentation_feedback *presentation_feedback)
+{
+ struct window *window = data;
+
+ presentation_feedback_destroy(presentation_feedback);
+
+ switch (window->mode) {
+ case RUN_MODE_PRESENT:
+ window_create_feedback(window, 0);
+ window_feedkick(window);
+ window_commit_next(window);
+ break;
+ case RUN_MODE_FEEDBACK:
+ case RUN_MODE_FEEDBACK_IDLE:
+ assert(0 && "bad mode");
+ }
+}
+
+static const struct presentation_feedback_listener feedkick_listener = {
+ feedback_sync_output,
+ feedkick_presented,
+ feedkick_discarded
+};
+
+static void
+firstdraw_mode_burst(struct window *window)
+{
+ switch (window->mode) {
+ case RUN_MODE_PRESENT:
+ window_create_feedback(window, 0);
+ break;
+ case RUN_MODE_FEEDBACK:
+ case RUN_MODE_FEEDBACK_IDLE:
+ assert(0 && "bad mode");
+ }
+
+ window_feedkick(window);
+ window_commit_next(window);
+}
+
+static void
+window_prerender(struct window *window)
+{
+ int i;
+ int timefactor = 1000000 / window->num_buffers;
+
+ for (i = 0; i < window->num_buffers; i++) {
+ struct buffer *buf = &window->buffers[i];
+
+ if (buf->busy)
+ fprintf(stderr, "wl_buffer id %u) busy\n",
+ wl_proxy_get_id(
+ (struct wl_proxy *)buf->buffer));
+
+ paint_pixels(buf->shm_data, window->width, window->height,
+ i * timefactor);
+ }
+}
+
+static void
+output_destroy(struct output *o)
+{
+ wl_output_destroy(o->output);
+ wl_list_remove(&o->link);
+ free(o);
+}
+
+static void
+display_add_output(struct display *d, uint32_t name, uint32_t version)
+{
+ struct output *o;
+
+ o = calloc(1, sizeof(*o));
+ assert(o);
+
+ o->output = wl_registry_bind(d->registry, name,
+ &wl_output_interface, 1);
+ o->name = name;
+ wl_list_insert(&d->output_list, &o->link);
+}
+
+static void
+presentation_clock_id(void *data, struct presentation *presentation,
+ uint32_t clk_id)
+{
+ struct display *d = data;
+
+ d->clk_id = clk_id;
+}
+
+static const struct presentation_listener presentation_listener = {
+ presentation_clock_id
+};
+
+static void
+shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
+{
+ struct display *d = data;
+
+ d->formats |= (1 << format);
+}
+
+static const struct wl_shm_listener shm_listener = {
+ shm_format
+};
+
+static void
+registry_handle_global(void *data, struct wl_registry *registry,
+ uint32_t name, const char *interface, uint32_t version)
+{
+ struct display *d = data;
+
+ if (strcmp(interface, "wl_compositor") == 0) {
+ d->compositor =
+ wl_registry_bind(registry,
+ name, &wl_compositor_interface, 1);
+ } else if (strcmp(interface, "wl_shell") == 0) {
+ d->shell = wl_registry_bind(registry,
+ name, &wl_shell_interface, 1);
+ } else if (strcmp(interface, "wl_shm") == 0) {
+ d->shm = wl_registry_bind(registry,
+ name, &wl_shm_interface, 1);
+ wl_shm_add_listener(d->shm, &shm_listener, d);
+ } else if (strcmp(interface, "wl_output") == 0) {
+ display_add_output(d, name, version);
+ } else if (strcmp(interface, "presentation") == 0) {
+ d->presentation =
+ wl_registry_bind(registry,
+ name, &presentation_interface, 1);
+ presentation_add_listener(d->presentation,
+ &presentation_listener, d);
+ }
+}
+
+static void
+registry_handle_global_remove(void *data, struct wl_registry *registry,
+ uint32_t name)
+{
+ struct display *d = data;
+ struct output *output, *otmp;
+
+ wl_list_for_each_safe(output, otmp, &d->output_list, link) {
+ if (output->name != name)
+ continue;
+
+ output_destroy(output);
+ }
+}
+
+static const struct wl_registry_listener registry_listener = {
+ registry_handle_global,
+ registry_handle_global_remove
+};
+
+static struct display *
+create_display(void)
+{
+ struct display *display;
+
+ display = malloc(sizeof *display);
+ if (display == NULL) {
+ fprintf(stderr, "out of memory\n");
+ exit(1);
+ }
+ display->display = wl_display_connect(NULL);
+ assert(display->display);
+
+ display->formats = 0;
+ display->clk_id = -1;
+ wl_list_init(&display->output_list);
+ display->registry = wl_display_get_registry(display->display);
+ wl_registry_add_listener(display->registry,
+ ®istry_listener, display);
+ wl_display_roundtrip(display->display);
+ if (display->shm == NULL) {
+ fprintf(stderr, "No wl_shm global\n");
+ exit(1);
+ }
+
+ wl_display_roundtrip(display->display);
+
+ if (!(display->formats & (1 << WL_SHM_FORMAT_XRGB8888))) {
+ fprintf(stderr, "WL_SHM_FORMAT_XRGB32 not available\n");
+ exit(1);
+ }
+
+ wl_display_get_fd(display->display);
+
+ return display;
+}
+
+static void
+destroy_display(struct display *display)
+{
+ while (!wl_list_empty(&display->output_list)) {
+ struct output *o;
+
+ o = wl_container_of(display->output_list.next, o, link);
+ output_destroy(o);
+ }
+
+ if (display->shm)
+ wl_shm_destroy(display->shm);
+
+ if (display->shell)
+ wl_shell_destroy(display->shell);
+
+ if (display->compositor)
+ wl_compositor_destroy(display->compositor);
+
+ wl_registry_destroy(display->registry);
+ wl_display_flush(display->display);
+ wl_display_disconnect(display->display);
+ free(display);
+}
+
+static int running = 1;
+
+static void
+signal_int(int signum)
+{
+ running = 0;
+}
+
+static void
+usage(const char *prog, int exit_code)
+{
+ fprintf(stderr, "Usage: %s [mode] [options]\n"
+ "where 'mode' is one of\n"
+ " -f\trun in feedback mode (default)\n"
+ " -i\trun in feedback-idle mode; sleep 1s between frames\n"
+ " -p\trun in low-latency presentation mode\n"
+ "and 'options' may include\n",
+ prog);
+
+ fprintf(stderr, "Printed timing statistics, depending on mode:\n"
+ " commit sequence number\n"
+ " f2c: time from frame callback timestamp to commit\n"
+ " c2p: time from commit to presentation\n"
+ " f2p: time from frame callback timestamp to presentation\n"
+ " p2p: time from previous presentation to this one\n"
+ " t2p: time from target timestamp to presentation\n"
+ " seq: MSC\n");
+
+
+ exit(exit_code);
+}
+
+int
+main(int argc, char **argv)
+{
+ struct sigaction sigint;
+ struct display *display;
+ struct window *window;
+ int ret = 0;
+ enum run_mode mode = RUN_MODE_FEEDBACK;
+ int i;
+
+ for (i = 1; i < argc; i++) {
+ if (strcmp("-f", argv[i]) == 0)
+ mode = RUN_MODE_FEEDBACK;
+ else if (strcmp("-i", argv[i]) == 0)
+ mode = RUN_MODE_FEEDBACK_IDLE;
+ else if (strcmp("-p", argv[i]) == 0)
+ mode = RUN_MODE_PRESENT;
+ else
+ usage(argv[0], EXIT_FAILURE);
+ }
+
+ display = create_display();
+ window = create_window(display, 250, 250, mode);
+ if (!window)
+ return 1;
+
+ sigint.sa_handler = signal_int;
+ sigemptyset(&sigint.sa_mask);
+ sigint.sa_flags = SA_RESETHAND;
+ sigaction(SIGINT, &sigint, NULL);
+
+ window_prerender(window);
+
+ switch (mode) {
+ case RUN_MODE_FEEDBACK:
+ case RUN_MODE_FEEDBACK_IDLE:
+ redraw_mode_feedback(window, NULL, 0);
+ break;
+ case RUN_MODE_PRESENT:
+ firstdraw_mode_burst(window);
+ break;
+ }
+
+ while (running && ret != -1)
+ ret = wl_display_dispatch(display->display);
+
+ fprintf(stderr, "presentation-shm exiting\n");
+ destroy_window(window);
+ destroy_display(display);
+
+ return 0;
+}