[PATCH] Add a simple client for testing compositor damage handling
Jason Ekstrand
jason at jlekstrand.net
Wed Jun 11 09:54:17 PDT 2014
From: Jason Ekstrand <jason at jlekstrand.net>
This allows for easily testing a compositor's damage tracking in all
currently available configurations including wl_surface.buffer_transform,
wl_surface.buffer_scale, and wl_viewport. It also includes a
--rotating-damage that flag instructs the client to change the
wl_surface.buffer_transform on every commit. This tests the compositor for
proper handling of texture uploads even when the transform has changed but
the buffer size hasn't.
---
.gitignore | 4 +-
Makefile.am | 12 +
clients/simple-damage.c | 882 ++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 896 insertions(+), 2 deletions(-)
create mode 100644 clients/simple-damage.c
diff --git a/.gitignore b/.gitignore
index f9a6a7b..2f6edd6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,5 @@
*.deps
-*.jpg
-*.la
+*.jpg *.la
*.lo
*.log
*.o
@@ -50,6 +49,7 @@ weston-scaler
weston-simple-egl
weston-simple-shm
weston-simple-touch
+weston-simple-damage
weston-smoke
weston-stacking
weston-subsurfaces
diff --git a/Makefile.am b/Makefile.am
index 343adc6..9fc04ee 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -386,6 +386,7 @@ endif
if BUILD_SIMPLE_CLIENTS
demo_clients += \
weston-simple-shm \
+ weston-simple-damage \
weston-simple-touch \
weston-multi-resource
@@ -398,6 +399,17 @@ nodist_weston_simple_shm_SOURCES = \
weston_simple_shm_CFLAGS = $(AM_CFLAGS) $(SIMPLE_CLIENT_CFLAGS)
weston_simple_shm_LDADD = $(SIMPLE_CLIENT_LIBS) libshared.la
+weston_simple_damage_SOURCES = clients/simple-damage.c
+nodist_weston_simple_damage_SOURCES = \
+ protocol/scaler-protocol.c \
+ protocol/scaler-client-protocol.h \
+ protocol/xdg-shell-protocol.c \
+ protocol/xdg-shell-client-protocol.h \
+ protocol/fullscreen-shell-protocol.c \
+ protocol/fullscreen-shell-client-protocol.h
+weston_simple_damage_CFLAGS = $(AM_CFLAGS) $(SIMPLE_CLIENT_CFLAGS)
+weston_simple_damage_LDADD = $(SIMPLE_CLIENT_LIBS) libshared.la
+
weston_simple_touch_SOURCES = clients/simple-touch.c
weston_simple_touch_CFLAGS = $(AM_CFLAGS) $(SIMPLE_CLIENT_CFLAGS)
weston_simple_touch_LDADD = $(SIMPLE_CLIENT_LIBS) libshared.la
diff --git a/clients/simple-damage.c b/clients/simple-damage.c
new file mode 100644
index 0000000..24595a1
--- /dev/null
+++ b/clients/simple-damage.c
@@ -0,0 +1,882 @@
+/*
+ * Copyright © 2014 Jason Ekstrand
+ * Copyright © 2011 Benjamin Franzke
+ * Copyright © 2010 Intel Corporation
+ *
+ * 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 <sys/time.h>
+#include <signal.h>
+
+#include <wayland-client.h>
+#include "../shared/os-compatibility.h"
+#include "xdg-shell-client-protocol.h"
+#include "fullscreen-shell-client-protocol.h"
+#include "scaler-client-protocol.h"
+
+int print_debug = 0;
+
+struct display {
+ struct wl_display *display;
+ struct wl_registry *registry;
+ int compositor_version;
+ struct wl_compositor *compositor;
+ struct wl_scaler *scaler;
+ struct xdg_shell *shell;
+ struct _wl_fullscreen_shell *fshell;
+ struct wl_shm *shm;
+ uint32_t formats;
+};
+
+struct buffer {
+ struct wl_buffer *buffer;
+ uint32_t *shm_data;
+ int busy;
+};
+
+enum window_flags {
+ WINDOW_FLAG_USE_VIEWPORT = 0x1,
+ WINDOW_FLAG_ROTATING_TRANSFORM = 0x2,
+};
+
+struct window {
+ struct display *display;
+ int width, height, border;
+ struct wl_surface *surface;
+ struct wl_viewport *viewport;
+ struct xdg_surface *xdg_surface;
+ struct wl_callback *callback;
+ struct buffer buffers[2];
+ struct buffer *prev_buffer;
+
+ enum window_flags flags;
+ int scale;
+ enum wl_output_transform transform;
+
+ struct {
+ float x, y; /* position in pixels */
+ float dx, dy; /* velocity in pixels/second */
+ int radius; /* radius in pixels */
+ uint32_t prev_time;
+ } ball;
+};
+
+static int running = 1;
+
+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_buffer(struct display *display, struct buffer *buffer,
+ int width, int height, uint32_t format)
+{
+ struct wl_shm_pool *pool;
+ int fd, size, stride;
+ void *data;
+
+ stride = width * 4;
+ size = stride * height;
+
+ 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);
+ buffer->buffer = wl_shm_pool_create_buffer(pool, 0,
+ width, height,
+ stride, format);
+ wl_buffer_add_listener(buffer->buffer, &buffer_listener, buffer);
+ wl_shm_pool_destroy(pool);
+ close(fd);
+
+ buffer->shm_data = data;
+
+ return 0;
+}
+
+static void
+handle_configure(void *data, struct xdg_surface *surface,
+ int32_t width, int32_t height, struct wl_array *states,
+ uint32_t serial)
+{
+}
+
+static void
+handle_close(void *data, struct xdg_surface *xdg_surface)
+{
+ running = 0;
+}
+
+static const struct xdg_surface_listener xdg_surface_listener = {
+ handle_configure,
+ handle_close,
+};
+
+static float
+bounded_randf(float a, float b)
+{
+ return a + ((float)rand() / (float)RAND_MAX) * (b - a);
+}
+
+static void
+window_init_game(struct window *window)
+{
+ int ax1, ay1, ax2, ay2; /* playable arena size */
+ struct timeval tv;
+
+ gettimeofday(&tv, NULL);
+ srand(tv.tv_usec);
+
+ ax1 = window->border + window->ball.radius;
+ ay1 = window->border + window->ball.radius;
+ ax2 = window->width - window->border - window->ball.radius;
+ ay2 = window->height - window->border - window->ball.radius;
+
+ window->ball.radius = 10;
+ window->ball.x = bounded_randf(ax1, ax2);
+ window->ball.y = bounded_randf(ay1, ay2);
+
+ window->ball.dx = bounded_randf(0, window->width);
+ window->ball.dy = bounded_randf(0, window->height);
+
+ window->ball.prev_time = 0;
+}
+
+static void
+window_advance_game(struct window *window, uint32_t timestamp)
+{
+ int ax1, ay1, ax2, ay2; /* Arena size */
+ float dt;
+
+ if (window->ball.prev_time == 0) {
+ /* first pass, don't do anything */
+ window->ball.prev_time = timestamp;
+ return;
+ }
+
+ /* dt in seconds */
+ dt = (float)(timestamp - window->ball.prev_time) / 1000.0f;
+
+ ax1 = window->border + window->ball.radius;
+ ay1 = window->border + window->ball.radius;
+ ax2 = window->width - window->border - window->ball.radius;
+ ay2 = window->height - window->border - window->ball.radius;
+
+ window->ball.x += window->ball.dx * dt;
+ while (window->ball.x < ax1 || ax2 < window->ball.x) {
+ if (window->ball.x < ax1)
+ window->ball.x = 2 * ax1 - window->ball.x;
+ if (ax2 <= window->ball.x)
+ window->ball.x = 2 * ax2 - window->ball.x;
+
+ window->ball.dx *= -1.0f;
+ }
+
+ window->ball.y += window->ball.dy * dt;
+ while (window->ball.y < ay1 || ay2 < window->ball.y) {
+ if (window->ball.y < ay1)
+ window->ball.y = 2 * ay1 - window->ball.y;
+ if (ay2 <= window->ball.y)
+ window->ball.y = 2 * ay2 - window->ball.y;
+
+ window->ball.dy *= -1.0f;
+ }
+
+ window->ball.prev_time = timestamp;
+}
+
+static struct window *
+create_window(struct display *display, int width, int height,
+ enum wl_output_transform transform, int scale,
+ enum window_flags flags)
+{
+ struct window *window;
+
+ if (display->compositor_version < 2 &&
+ (transform != WL_OUTPUT_TRANSFORM_NORMAL ||
+ flags & WINDOW_FLAG_ROTATING_TRANSFORM)) {
+ fprintf(stderr, "wl_surface.buffer_transform unsupported in "
+ "wl_surface version %d\n",
+ display->compositor_version);
+ exit(1);
+ }
+
+ if (display->compositor_version < 3 &&
+ (! (flags & WINDOW_FLAG_USE_VIEWPORT)) && scale != 1) {
+ fprintf(stderr, "wl_surface.buffer_scale unsupported in "
+ "wl_surface version %d\n",
+ display->compositor_version);
+ exit(1);
+ }
+
+ if (display->scaler == NULL && (flags & WINDOW_FLAG_USE_VIEWPORT)) {
+ fprintf(stderr, "Compositor does not support wl_viewport");
+ exit(1);
+ }
+
+ window = calloc(1, sizeof *window);
+ if (!window)
+ return NULL;
+
+ window->callback = NULL;
+ window->display = display;
+ window->width = width;
+ window->height = height;
+ window->border = 10;
+ window->flags = flags;
+ window->transform = transform;
+ window->scale = scale;
+
+ window_init_game(window);
+
+ window->surface = wl_compositor_create_surface(display->compositor);
+
+ if (window->flags & WINDOW_FLAG_USE_VIEWPORT)
+ window->viewport = wl_scaler_get_viewport(display->scaler,
+ window->surface);
+
+ if (display->shell) {
+ window->xdg_surface =
+ xdg_shell_get_xdg_surface(display->shell,
+ window->surface);
+
+ assert(window->xdg_surface);
+
+ xdg_surface_add_listener(window->xdg_surface,
+ &xdg_surface_listener, window);
+
+ xdg_surface_set_title(window->xdg_surface, "simple-damage");
+ } else if (display->fshell) {
+ _wl_fullscreen_shell_present_surface(display->fshell,
+ window->surface,
+ _WL_FULLSCREEN_SHELL_PRESENT_METHOD_DEFAULT,
+ NULL);
+ } else {
+ assert(0);
+ }
+
+ /* Initialise damage to full surface, so the padding gets painted */
+ wl_surface_damage(window->surface, 0, 0, INT32_MAX, INT32_MAX);
+
+ return window;
+}
+
+static void
+destroy_window(struct window *window)
+{
+ if (window->callback)
+ wl_callback_destroy(window->callback);
+
+ if (window->buffers[0].buffer)
+ wl_buffer_destroy(window->buffers[0].buffer);
+ if (window->buffers[1].buffer)
+ wl_buffer_destroy(window->buffers[1].buffer);
+
+ if (window->xdg_surface)
+ xdg_surface_destroy(window->xdg_surface);
+ if (window->viewport)
+ wl_viewport_destroy(window->viewport);
+ wl_surface_destroy(window->surface);
+ free(window);
+}
+
+static struct buffer *
+window_next_buffer(struct window *window)
+{
+ struct buffer *buffer;
+ int ret = 0, bwidth, bheight;
+
+ if (!window->buffers[0].busy)
+ buffer = &window->buffers[0];
+ else if (!window->buffers[1].busy)
+ buffer = &window->buffers[1];
+ else
+ return NULL;
+
+ switch (window->transform) {
+ default:
+ case WL_OUTPUT_TRANSFORM_NORMAL:
+ case WL_OUTPUT_TRANSFORM_180:
+ case WL_OUTPUT_TRANSFORM_FLIPPED:
+ case WL_OUTPUT_TRANSFORM_FLIPPED_180:
+ bwidth = window->width * window->scale;
+ bheight = window->height * window->scale;
+ break;
+ case WL_OUTPUT_TRANSFORM_90:
+ case WL_OUTPUT_TRANSFORM_270:
+ case WL_OUTPUT_TRANSFORM_FLIPPED_90:
+ case WL_OUTPUT_TRANSFORM_FLIPPED_270:
+ bwidth = window->height * window->scale;
+ bheight = window->width * window->scale;
+ break;
+ }
+
+ /* If we're using a viewport, we make it double-size and crop */
+ if (window->viewport) {
+ bwidth *= 2;
+ bheight *= 2;
+ }
+
+ if (!buffer->buffer) {
+ ret = create_shm_buffer(window->display, buffer,
+ bwidth, bheight,
+ WL_SHM_FORMAT_ARGB8888);
+
+ if (ret < 0)
+ return NULL;
+ }
+
+ return buffer;
+}
+
+static void
+paint_box(uint32_t *pixels, int stride, int x, int y, int width, int height,
+ uint32_t color)
+{
+ int i, j;
+
+ for (j = y; j < y + height; ++j)
+ for (i = x; i < x + width; ++i)
+ pixels[i + j * stride] = color;
+}
+
+static void
+paint_circle(uint32_t *pixels, int stride, float x, float y, int radius,
+ uint32_t color)
+{
+ int i, j;
+
+ for (j = y - radius; j <= (int)(y + radius); ++j)
+ for (i = x - radius; i <= (int)(x + radius); ++i)
+ if ((j+0.5f-y)*(j+0.5f-y) + (i+0.5f-x)*(i+0.5f-x) <= radius * radius)
+ pixels[i + j * stride] = color;
+}
+
+static void
+window_get_transformed_ball(struct window *window, float *bx, float *by)
+{
+ float wx, wy;
+
+ wx = window->ball.x;
+ wy = window->ball.y;
+
+ switch (window->transform) {
+ default:
+ case WL_OUTPUT_TRANSFORM_NORMAL:
+ *bx = wx;
+ *by = wy;
+ break;
+ case WL_OUTPUT_TRANSFORM_90:
+ *bx = window->height - wy;
+ *by = wx;
+ break;
+ case WL_OUTPUT_TRANSFORM_180:
+ *bx = window->width - wx;
+ *by = window->height - wy;
+ break;
+ case WL_OUTPUT_TRANSFORM_270:
+ *bx = wy;
+ *by = window->width - wx;
+ break;
+ case WL_OUTPUT_TRANSFORM_FLIPPED:
+ *bx = window->width - wx;
+ *by = wy;
+ break;
+ case WL_OUTPUT_TRANSFORM_FLIPPED_90:
+ *bx = window->height - wy;
+ *by = window->width - wx;
+ break;
+ case WL_OUTPUT_TRANSFORM_FLIPPED_180:
+ *bx = wx;
+ *by = window->height - wy;
+ break;
+ case WL_OUTPUT_TRANSFORM_FLIPPED_270:
+ *bx = wy;
+ *by = wx;
+ break;
+ }
+
+ *bx *= window->scale;
+ *by *= window->scale;
+}
+
+static const struct wl_callback_listener frame_listener;
+
+static void
+redraw(void *data, struct wl_callback *callback, uint32_t time)
+{
+ struct window *window = data;
+ struct buffer *buffer;
+ int bwidth, bheight, bborder, bstride;
+ uint32_t *buffer_data;
+ float bx, by;
+
+ buffer = window_next_buffer(window);
+ if (!buffer) {
+ fprintf(stderr,
+ !callback ? "Failed to create the first buffer.\n" :
+ "Both buffers busy at redraw(). Server bug?\n");
+ abort();
+ }
+
+ /* Rotate the damage, but keep the even/odd parity so the
+ * dimensions of the buffers don't change */
+ if (window->flags & WINDOW_FLAG_ROTATING_TRANSFORM)
+ window->transform = (window->transform + 2) % 8;
+
+ switch (window->transform) {
+ default:
+ case WL_OUTPUT_TRANSFORM_NORMAL:
+ case WL_OUTPUT_TRANSFORM_180:
+ case WL_OUTPUT_TRANSFORM_FLIPPED:
+ case WL_OUTPUT_TRANSFORM_FLIPPED_180:
+ bwidth = window->width * window->scale;
+ bheight = window->height * window->scale;
+ break;
+ case WL_OUTPUT_TRANSFORM_90:
+ case WL_OUTPUT_TRANSFORM_270:
+ case WL_OUTPUT_TRANSFORM_FLIPPED_90:
+ case WL_OUTPUT_TRANSFORM_FLIPPED_270:
+ bwidth = window->height * window->scale;
+ bheight = window->width * window->scale;
+ break;
+ }
+
+ if (window->viewport) {
+ /* The buffer is actually twice as big. We'll crop it down
+ * to size */
+ bstride = bwidth * 2;
+ buffer_data = buffer->shm_data;
+
+ switch (window->transform) {
+ case WL_OUTPUT_TRANSFORM_NORMAL:
+ buffer_data += (bheight / 4) * bstride +
+ (bwidth / 3);
+ break;
+ case WL_OUTPUT_TRANSFORM_90:
+ buffer_data += (bheight / 3) * bstride +
+ (bwidth - bwidth / 4);
+ break;
+ case WL_OUTPUT_TRANSFORM_180:
+ buffer_data += (bheight - bheight / 4) * bstride +
+ (bwidth - bwidth / 3);
+ break;
+ case WL_OUTPUT_TRANSFORM_270:
+ buffer_data += (bheight - bheight / 3) * bstride +
+ (bwidth / 4);
+ break;
+ case WL_OUTPUT_TRANSFORM_FLIPPED:
+ buffer_data += (bheight / 4) * bstride +
+ (bwidth - bwidth / 3);
+ break;
+ case WL_OUTPUT_TRANSFORM_FLIPPED_90:
+ buffer_data += (bheight - bheight / 3) * bstride +
+ (bwidth - bwidth / 4);
+ break;
+ case WL_OUTPUT_TRANSFORM_FLIPPED_180:
+ buffer_data += (bheight - bheight / 4) * bstride +
+ (bwidth / 3);
+ break;
+ case WL_OUTPUT_TRANSFORM_FLIPPED_270:
+ buffer_data += (bheight / 3) * bstride +
+ (bwidth / 4);
+ break;
+ }
+
+ wl_viewport_set_source(window->viewport,
+ wl_fixed_from_int(window->width * window->scale / 3),
+ wl_fixed_from_int(window->height * window->scale / 4),
+ wl_fixed_from_int(window->width * window->scale),
+ wl_fixed_from_int(window->height * window->scale));
+
+ /* Fill the whole thing with red to detect viewport errors */
+ paint_box(buffer->shm_data, bstride,
+ 0, 0, bwidth * 2, bheight * 2, 0xffff0000);
+ } else {
+ bstride = bwidth;
+ buffer_data = buffer->shm_data;
+ }
+
+ bborder = window->border * window->scale;
+
+ /* Paint the border */
+ paint_box(buffer_data, bstride, 0, 0, bwidth, bborder, 0xffffffff);
+ paint_box(buffer_data, bstride, 0, 0, bborder, bheight, 0xffffffff);
+ paint_box(buffer_data, bstride,
+ bwidth - bborder, 0, bborder, bheight, 0xffffffff);
+ paint_box(buffer_data, bstride,
+ 0, bheight - bborder, bwidth, bborder, 0xffffffff);
+
+ /* fill with translucent */
+ paint_box(buffer_data, bstride, bborder, bborder,
+ bwidth - 2 * bborder, bheight - 2 * bborder, 0x80000000);
+
+ /* Damage where the ball was */
+ wl_surface_damage(window->surface,
+ window->ball.x - window->ball.radius,
+ window->ball.y - window->ball.radius,
+ window->ball.radius * 2 + 1,
+ window->ball.radius * 2 + 1);
+
+ window_advance_game(window, time);
+
+ window_get_transformed_ball(window, &bx, &by);
+
+ /* Paint the ball */
+ paint_circle(buffer_data, bstride, bx, by,
+ window->ball.radius * window->scale, 0xff00ff00);
+
+ if (print_debug) {
+ printf("Ball now located at (%f, %f)\n",
+ window->ball.x, window->ball.y);
+
+ printf("Circle painted at (%f, %f), radius %d\n", bx, by,
+ window->ball.radius * window->scale);
+
+ printf("Buffer damage rectangle: (%d, %d) @ %dx%d\n",
+ (int)(bx - window->ball.radius * window->scale),
+ (int)(by - window->ball.radius * window->scale),
+ window->ball.radius * window->scale * 2 + 1,
+ window->ball.radius * window->scale * 2 + 1);
+ }
+
+ /* Damage where the ball is now */
+ wl_surface_damage(window->surface,
+ window->ball.x - window->ball.radius,
+ window->ball.y - window->ball.radius,
+ window->ball.radius * 2 + 1,
+ window->ball.radius * 2 + 1);
+
+ wl_surface_attach(window->surface, buffer->buffer, 0, 0);
+
+ if (window->display->compositor_version >= 2 &&
+ window->transform != WL_OUTPUT_TRANSFORM_NORMAL)
+ wl_surface_set_buffer_transform(window->surface,
+ window->transform);
+
+ if (window->scale != 1) {
+ if (window->viewport) {
+ wl_viewport_set_destination(window->viewport,
+ window->width,
+ window->height);
+ } else {
+ wl_surface_set_buffer_scale(window->surface,
+ window->scale);
+ }
+ }
+
+ if (callback)
+ wl_callback_destroy(callback);
+
+ window->callback = wl_surface_frame(window->surface);
+ wl_callback_add_listener(window->callback, &frame_listener, window);
+ wl_surface_commit(window->surface);
+ buffer->busy = 1;
+}
+
+static const struct wl_callback_listener frame_listener = {
+ redraw
+};
+
+static void
+shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
+{
+ struct display *d = data;
+
+ d->formats |= (1 << format);
+}
+
+struct wl_shm_listener shm_listener = {
+ shm_format
+};
+
+static void
+xdg_shell_ping(void *data, struct xdg_shell *shell, uint32_t serial)
+{
+ xdg_shell_pong(shell, serial);
+}
+
+static const struct xdg_shell_listener xdg_shell_listener = {
+ xdg_shell_ping,
+};
+
+#define XDG_VERSION 3 /* The version of xdg-shell that we implement */
+#ifdef static_assert
+static_assert(XDG_VERSION == XDG_SHELL_VERSION_CURRENT,
+ "Interface version doesn't match implementation version");
+#endif
+
+static void
+registry_handle_global(void *data, struct wl_registry *registry,
+ uint32_t id, const char *interface, uint32_t version)
+{
+ struct display *d = data;
+
+ if (strcmp(interface, "wl_compositor") == 0) {
+ if (d->compositor_version > (int)version) {
+ fprintf(stderr, "Compositor does not support "
+ "wl_surface version %d\n", d->compositor_version);
+ exit(1);
+ }
+
+ if (d->compositor_version > 0)
+ version = d->compositor_version;
+
+ d->compositor =
+ wl_registry_bind(registry,
+ id, &wl_compositor_interface, version);
+ } else if (strcmp(interface, "wl_scaler") == 0 && version >= 2) {
+ d->scaler = wl_registry_bind(registry,
+ id, &wl_scaler_interface, 2);
+ } else if (strcmp(interface, "xdg_shell") == 0) {
+ d->shell = wl_registry_bind(registry,
+ id, &xdg_shell_interface, 1);
+ xdg_shell_use_unstable_version(d->shell, XDG_VERSION);
+ xdg_shell_add_listener(d->shell, &xdg_shell_listener, d);
+ } else if (strcmp(interface, "_wl_fullscreen_shell") == 0) {
+ d->fshell = wl_registry_bind(registry,
+ id, &_wl_fullscreen_shell_interface, 1);
+ } else if (strcmp(interface, "wl_shm") == 0) {
+ d->shm = wl_registry_bind(registry,
+ id, &wl_shm_interface, 1);
+ wl_shm_add_listener(d->shm, &shm_listener, d);
+ }
+}
+
+static void
+registry_handle_global_remove(void *data, struct wl_registry *registry,
+ uint32_t name)
+{
+}
+
+static const struct wl_registry_listener registry_listener = {
+ registry_handle_global,
+ registry_handle_global_remove
+};
+
+static struct display *
+create_display(int version)
+{
+ 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->compositor_version = version;
+ display->formats = 0;
+ 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);
+ }
+
+ return display;
+}
+
+static void
+destroy_display(struct display *display)
+{
+ if (display->shm)
+ wl_shm_destroy(display->shm);
+
+ if (display->shell)
+ xdg_shell_destroy(display->shell);
+
+ if (display->fshell)
+ _wl_fullscreen_shell_release(display->fshell);
+
+ if (display->scaler)
+ wl_scaler_destroy(display->scaler);
+
+ 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 void
+signal_int(int signum)
+{
+ running = 0;
+}
+
+static void
+print_usage(int retval)
+{
+ printf(
+ "usage: weston-simple-damage [options]\n\n"
+ "options:\n"
+ " -h, --help\t\tPring this help\n"
+ " --verbose\t\tPrint verbose log information\n"
+ " --version=VERSION\tVersion of wl_surface to use\n"
+ " --width=WIDTH\t\tWidth of the window\n"
+ " --height=HEIGHT\tHeight of the window\n"
+ " --scale=SCALE\t\tScale factor for the surface\n"
+ " --transform=TRANSFORM\tTransform for the surface\n"
+ " --rotating-transform\tUse a different buffer_transform for each frame\n"
+ " --use-viewport\tUse wl_viewport\n"
+ );
+
+ exit(retval);
+}
+
+static int
+parse_transform(const char *str, enum wl_output_transform *transform)
+{
+ int i;
+ static const struct {
+ const char *name;
+ enum wl_output_transform transform;
+ } names[] = {
+ { "normal", WL_OUTPUT_TRANSFORM_NORMAL },
+ { "90", WL_OUTPUT_TRANSFORM_90 },
+ { "180", WL_OUTPUT_TRANSFORM_180 },
+ { "270", WL_OUTPUT_TRANSFORM_270 },
+ { "flipped", WL_OUTPUT_TRANSFORM_FLIPPED },
+ { "flipped-90", WL_OUTPUT_TRANSFORM_FLIPPED_90 },
+ { "flipped-180", WL_OUTPUT_TRANSFORM_FLIPPED_180 },
+ { "flipped-270", WL_OUTPUT_TRANSFORM_FLIPPED_270 },
+ };
+
+ for (i = 0; i < 8; i++) {
+ if (strcmp(names[i].name, str) == 0) {
+ *transform = names[i].transform;
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+int
+main(int argc, char **argv)
+{
+ struct sigaction sigint;
+ struct display *display;
+ struct window *window;
+ int i, ret = 0;
+ int version = 0;
+ int width = 300, height = 200, scale = 1;
+ enum wl_output_transform transform = WL_OUTPUT_TRANSFORM_NORMAL;
+ enum window_flags flags = 0;
+
+ for (i = 1; i < argc; ++i) {
+ if (strcmp(argv[i], "--help") == 0 ||
+ strcmp(argv[i], "-h") == 0) {
+ print_usage(0);
+ } else if (sscanf(argv[i], "--version=%d", &version) > 0) {
+ if (version < 1 || version > 3) {
+ fprintf(stderr, "Unsupported wl_surface version: %d\n",
+ version);
+ return 1;
+ }
+ continue;
+ } else if (strcmp(argv[i], "--verbose") == 0) {
+ print_debug = 1;
+ continue;
+ } else if (sscanf(argv[i], "--width=%d", &width) > 0) {
+ continue;
+ } else if (sscanf(argv[i], "--height=%d", &height) > 0) {
+ continue;
+ } else if (strncmp(argv[i], "--transform=", 12) == 0 &&
+ parse_transform(argv[i] + 12, &transform) > 0) {
+ continue;
+ } else if (strcmp(argv[i], "--rotating-transform") == 0) {
+ flags |= WINDOW_FLAG_ROTATING_TRANSFORM;
+ continue;
+ } else if (sscanf(argv[i], "--scale=%d", &scale) > 0) {
+ continue;
+ } else if (strcmp(argv[i], "--use-viewport") == 0) {
+ flags |= WINDOW_FLAG_USE_VIEWPORT;
+ continue;
+ } else {
+ printf("Invalid option: %s\n", argv[i]);
+ print_usage(255);
+ }
+ }
+
+ display = create_display(version);
+
+ window = create_window(display, width, height, transform, scale, flags);
+ if (!window)
+ return 1;
+
+ sigint.sa_handler = signal_int;
+ sigemptyset(&sigint.sa_mask);
+ sigint.sa_flags = SA_RESETHAND;
+ sigaction(SIGINT, &sigint, NULL);
+
+ redraw(window, NULL, 0);
+
+ while (running && ret != -1)
+ ret = wl_display_dispatch(display->display);
+
+ fprintf(stderr, "simple-shm exiting\n");
+ destroy_window(window);
+ destroy_display(display);
+
+ return 0;
+}
--
2.0.0
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