Rename wayland-system-compositor back to just compositor
diff --git a/compositor.c b/compositor.c
new file mode 100644
index 0000000..8242b1a
--- /dev/null
+++ b/compositor.c
@@ -0,0 +1,1531 @@
+/*
+ * Copyright © 2008 Kristian Høgsberg
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdarg.h>
+#include <termios.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <cairo.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <math.h>
+#include <linux/input.h>
+#include <linux/vt.h>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+#include <time.h>
+
+#define LIBUDEV_I_KNOW_THE_API_IS_SUBJECT_TO_CHANGE
+#include <libudev.h>
+
+#define GL_GLEXT_PROTOTYPES
+#define EGL_EGLEXT_PROTOTYPES
+#include <GL/gl.h>
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+
+#include "wayland.h"
+#include "wayland-protocol.h"
+#include "cairo-util.h"
+#include "compositor.h"
+
+#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0])
+
+struct wlsc_matrix {
+ GLdouble d[16];
+};
+
+struct wl_visual {
+ struct wl_object base;
+};
+
+struct wlsc_surface;
+
+struct wlsc_listener {
+ struct wl_list link;
+ void (*func)(struct wlsc_listener *listener,
+ struct wlsc_surface *surface);
+};
+
+struct wlsc_output {
+ struct wl_object base;
+ struct wl_list link;
+ struct wlsc_compositor *compositor;
+ struct wlsc_surface *background;
+ int32_t x, y, width, height;
+
+ drmModeModeInfo mode;
+ uint32_t crtc_id;
+ uint32_t connector_id;
+
+ GLuint rbo[2];
+ uint32_t fb_id[2];
+ EGLImageKHR image[2];
+ uint32_t current;
+};
+
+struct wlsc_input_device {
+ struct wl_object base;
+ int32_t x, y;
+ struct wlsc_compositor *ec;
+ struct wlsc_surface *sprite;
+ struct wl_list link;
+
+ int grab;
+ struct wlsc_surface *grab_surface;
+ struct wlsc_surface *pointer_focus;
+ struct wlsc_surface *keyboard_focus;
+ struct wl_array keys;
+
+ struct wlsc_listener listener;
+};
+
+struct wlsc_compositor {
+ struct wl_compositor base;
+ struct wl_visual argb_visual, premultiplied_argb_visual, rgb_visual;
+
+ EGLDisplay display;
+ EGLContext context;
+ int drm_fd;
+ GLuint fbo;
+ struct wl_display *wl_display;
+
+ struct wl_list output_list;
+ struct wl_list input_device_list;
+ struct wl_list surface_list;
+
+ struct wl_list surface_destroy_listener_list;
+
+ struct wl_event_source *term_signal_source;
+
+ /* tty handling state */
+ int tty_fd;
+ uint32_t vt_active : 1;
+
+ struct termios terminal_attributes;
+ struct wl_event_source *tty_input_source;
+ struct wl_event_source *enter_vt_source;
+ struct wl_event_source *leave_vt_source;
+
+ struct udev *udev;
+
+ /* Repaint state. */
+ struct wl_event_source *timer_source;
+ int repaint_needed;
+ int repaint_on_timeout;
+ struct timespec previous_swap;
+ uint32_t current_frame;
+ struct wl_event_source *drm_source;
+
+ uint32_t modifier_state;
+};
+
+#define MODIFIER_CTRL (1 << 8)
+#define MODIFIER_ALT (1 << 9)
+
+struct wlsc_vector {
+ GLdouble x, y, z;
+};
+
+struct wlsc_surface {
+ struct wl_surface base;
+ struct wlsc_compositor *compositor;
+ struct wl_visual *visual;
+ GLuint texture;
+ EGLImageKHR image;
+ struct wl_map map;
+ int width, height;
+ struct wl_list link;
+ struct wlsc_matrix matrix;
+};
+
+static const char *option_background = "background.jpg";
+static int option_connector = 0;
+
+static const GOptionEntry option_entries[] = {
+ { "background", 'b', 0, G_OPTION_ARG_STRING,
+ &option_background, "Background image" },
+ { "connector", 'c', 0, G_OPTION_ARG_INT,
+ &option_connector, "KMS connector" },
+ { NULL }
+};
+
+struct screenshooter {
+ struct wl_object base;
+ struct wlsc_compositor *ec;
+};
+
+struct screenshooter_interface {
+ void (*shoot)(struct wl_client *client, struct screenshooter *shooter);
+};
+
+static void
+screenshooter_shoot(struct wl_client *client, struct screenshooter *shooter)
+{
+ struct wlsc_compositor *ec = shooter->ec;
+ struct wlsc_output *output;
+ char buffer[256];
+ GdkPixbuf *pixbuf, *normal;
+ GError *error = NULL;
+ unsigned char *data;
+ int i, j;
+
+ i = 0;
+ wl_list_for_each(output, &ec->output_list, link) {
+ snprintf(buffer, sizeof buffer, "wayland-screenshot-%d.png", i++);
+ data = malloc(output->width * output->height * 4);
+ if (data == NULL) {
+ fprintf(stderr, "couldn't allocate image buffer\n");
+ continue;
+ }
+
+ glReadBuffer(GL_FRONT);
+ glPixelStorei(GL_PACK_ALIGNMENT, 1);
+ glReadPixels(0, 0, output->width, output->height,
+ GL_RGBA, GL_UNSIGNED_BYTE, data);
+
+ /* FIXME: We should just use a RGB visual for the frontbuffer. */
+ for (j = 3; j < output->width * output->height * 4; j += 4)
+ data[j] = 0xff;
+
+ pixbuf = gdk_pixbuf_new_from_data(data, GDK_COLORSPACE_RGB, TRUE,
+ 8, output->width, output->height, output->width * 4,
+ NULL, NULL);
+ normal = gdk_pixbuf_flip(pixbuf, FALSE);
+ gdk_pixbuf_save(normal, buffer, "png", &error, NULL);
+ gdk_pixbuf_unref(normal);
+ gdk_pixbuf_unref(pixbuf);
+ free(data);
+ }
+}
+
+static const struct wl_message screenshooter_methods[] = {
+ { "shoot", "", NULL }
+};
+
+static const struct wl_interface screenshooter_interface = {
+ "screenshooter", 1,
+ ARRAY_LENGTH(screenshooter_methods),
+ screenshooter_methods,
+};
+
+struct screenshooter_interface screenshooter_implementation = {
+ screenshooter_shoot
+};
+
+static struct screenshooter *
+screenshooter_create(struct wlsc_compositor *ec)
+{
+ struct screenshooter *shooter;
+
+ shooter = malloc(sizeof *shooter);
+ if (shooter == NULL)
+ return NULL;
+
+ shooter->base.interface = &screenshooter_interface;
+ shooter->base.implementation = (void(**)(void)) &screenshooter_implementation;
+ shooter->ec = ec;
+
+ return shooter;
+};
+
+static void
+wlsc_matrix_init(struct wlsc_matrix *matrix)
+{
+ static const struct wlsc_matrix identity = {
+ { 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1 }
+ };
+
+ memcpy(matrix, &identity, sizeof identity);
+}
+
+static void
+wlsc_matrix_multiply(struct wlsc_matrix *m, const struct wlsc_matrix *n)
+{
+ struct wlsc_matrix tmp;
+ const GLdouble *row, *column;
+ div_t d;
+ int i, j;
+
+ for (i = 0; i < 16; i++) {
+ tmp.d[i] = 0;
+ d = div(i, 4);
+ row = m->d + d.quot * 4;
+ column = n->d + d.rem;
+ for (j = 0; j < 4; j++)
+ tmp.d[i] += row[j] * column[j * 4];
+ }
+ memcpy(m, &tmp, sizeof tmp);
+}
+
+static void
+wlsc_matrix_translate(struct wlsc_matrix *matrix, GLdouble x, GLdouble y, GLdouble z)
+{
+ struct wlsc_matrix translate = {
+ { 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, x, y, z, 1 }
+ };
+
+ wlsc_matrix_multiply(matrix, &translate);
+}
+
+static void
+wlsc_matrix_scale(struct wlsc_matrix *matrix, GLdouble x, GLdouble y, GLdouble z)
+{
+ struct wlsc_matrix scale = {
+ { x, 0, 0, 0, 0, y, 0, 0, 0, 0, z, 0, 0, 0, 0, 1 }
+ };
+
+ wlsc_matrix_multiply(matrix, &scale);
+}
+
+static void
+wlsc_matrix_rotate(struct wlsc_matrix *matrix,
+ GLdouble angle, GLdouble x, GLdouble y, GLdouble z)
+{
+ GLdouble c = cos(angle);
+ GLdouble s = sin(angle);
+ struct wlsc_matrix rotate = {
+ { x * x * (1 - c) + c, y * x * (1 - c) + z * s, x * z * (1 - c) - y * s, 0,
+ x * y * (1 - c) - z * s, y * y * (1 - c) + c, y * z * (1 - c) + x * s, 0,
+ x * z * (1 - c) + y * s, y * z * (1 - c) - x * s, z * z * (1 - c) + c, 0,
+ 0, 0, 0, 1 }
+ };
+
+ wlsc_matrix_multiply(matrix, &rotate);
+}
+
+static void
+wlsc_surface_init(struct wlsc_surface *surface,
+ struct wlsc_compositor *compositor, struct wl_visual *visual,
+ int32_t x, int32_t y, int32_t width, int32_t height)
+{
+ glGenTextures(1, &surface->texture);
+ surface->compositor = compositor;
+ surface->map.x = x;
+ surface->map.y = y;
+ surface->map.width = width;
+ surface->map.height = height;
+ surface->visual = visual;
+ wlsc_matrix_init(&surface->matrix);
+}
+
+static struct wlsc_surface *
+wlsc_surface_create_from_cairo_surface(struct wlsc_compositor *ec,
+ cairo_surface_t *surface,
+ int x, int y, int width, int height)
+{
+ struct wlsc_surface *es;
+ int stride;
+ void *data;
+
+ stride = cairo_image_surface_get_stride(surface);
+ data = cairo_image_surface_get_data(surface);
+
+ es = malloc(sizeof *es);
+ if (es == NULL)
+ return NULL;
+
+ wlsc_surface_init(es, ec, &ec->premultiplied_argb_visual,
+ x, y, width, height);
+ glBindTexture(GL_TEXTURE_2D, es->texture);
+ glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_REPEAT);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0,
+ GL_BGRA, GL_UNSIGNED_BYTE, data);
+
+ return es;
+}
+
+static void
+wlsc_surface_destroy(struct wlsc_surface *surface,
+ struct wlsc_compositor *compositor)
+{
+ struct wlsc_listener *l;
+
+ wl_list_remove(&surface->link);
+ glDeleteTextures(1, &surface->texture);
+ wl_client_remove_surface(surface->base.client, &surface->base);
+
+ wl_list_for_each(l, &compositor->surface_destroy_listener_list, link)
+ l->func(l, surface);
+
+ free(surface);
+}
+
+static void
+pointer_path(cairo_t *cr, int x, int y)
+{
+ const int end = 3, tx = 4, ty = 12, dx = 5, dy = 10;
+ const int width = 16, height = 16;
+
+ cairo_move_to(cr, x, y);
+ cairo_line_to(cr, x + tx, y + ty);
+ cairo_line_to(cr, x + dx, y + dy);
+ cairo_line_to(cr, x + width - end, y + height);
+ cairo_line_to(cr, x + width, y + height - end);
+ cairo_line_to(cr, x + dy, y + dx);
+ cairo_line_to(cr, x + ty, y + tx);
+ cairo_close_path(cr);
+}
+
+static struct wlsc_surface *
+pointer_create(struct wlsc_compositor *ec, int x, int y, int width, int height)
+{
+ struct wlsc_surface *es;
+ const int hotspot_x = 16, hotspot_y = 16;
+ cairo_surface_t *surface;
+ cairo_t *cr;
+
+ surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
+ width, height);
+
+ cr = cairo_create(surface);
+ pointer_path(cr, hotspot_x + 5, hotspot_y + 4);
+ cairo_set_line_width(cr, 2);
+ cairo_set_source_rgb(cr, 0, 0, 0);
+ cairo_stroke_preserve(cr);
+ cairo_fill(cr);
+ blur_surface(surface, width);
+
+ pointer_path(cr, hotspot_x, hotspot_y);
+ cairo_stroke_preserve(cr);
+ cairo_set_source_rgb(cr, 1, 1, 1);
+ cairo_fill(cr);
+ cairo_destroy(cr);
+
+ es = wlsc_surface_create_from_cairo_surface(ec,
+ surface,
+ x - hotspot_x,
+ y - hotspot_y,
+ width, height);
+
+ cairo_surface_destroy(surface);
+
+ return es;
+}
+
+static struct wlsc_surface *
+background_create(struct wlsc_output *output, const char *filename)
+{
+ struct wlsc_surface *background;
+ GdkPixbuf *pixbuf;
+ GError *error = NULL;
+ void *data;
+ GLenum format;
+
+ background = malloc(sizeof *background);
+ if (background == NULL)
+ return NULL;
+
+ g_type_init();
+
+ pixbuf = gdk_pixbuf_new_from_file_at_scale(filename,
+ output->width,
+ output->height,
+ FALSE, &error);
+ if (error != NULL) {
+ free(background);
+ return NULL;
+ }
+
+ data = gdk_pixbuf_get_pixels(pixbuf);
+
+ wlsc_surface_init(background, output->compositor,
+ &output->compositor->rgb_visual,
+ output->x, output->y, output->width, output->height);
+
+ glBindTexture(GL_TEXTURE_2D, background->texture);
+ glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_REPEAT);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+ if (gdk_pixbuf_get_has_alpha(pixbuf))
+ format = GL_RGBA;
+ else
+ format = GL_RGB;
+
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB,
+ output->width, output->height, 0,
+ format, GL_UNSIGNED_BYTE, data);
+
+ return background;
+}
+
+static void
+wlsc_surface_draw(struct wlsc_surface *es)
+{
+ struct wlsc_compositor *ec = es->compositor;
+ GLint vertices[12];
+ GLint tex_coords[12] = { 0, 0, 0, 1, 1, 0, 1, 1 };
+ GLuint indices[4] = { 0, 1, 2, 3 };
+
+ vertices[0] = es->map.x;
+ vertices[1] = es->map.y;
+ vertices[2] = 0;
+
+ vertices[3] = es->map.x;
+ vertices[4] = es->map.y + es->map.height;
+ vertices[5] = 0;
+
+ vertices[6] = es->map.x + es->map.width;
+ vertices[7] = es->map.y;
+ vertices[8] = 0;
+
+ vertices[9] = es->map.x + es->map.width;
+ vertices[10] = es->map.y + es->map.height;
+ vertices[11] = 0;
+
+ if (es->visual == &ec->argb_visual) {
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+ glEnable(GL_BLEND);
+ } else if (es->visual == &ec->premultiplied_argb_visual) {
+ glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
+ glEnable(GL_BLEND);
+ } else {
+ glDisable(GL_BLEND);
+ }
+
+ glPushMatrix();
+ //glMultMatrixd(es->matrix.d);
+ glBindTexture(GL_TEXTURE_2D, es->texture);
+ glEnable(GL_TEXTURE_2D);
+ glEnableClientState(GL_VERTEX_ARRAY);
+ glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+ glVertexPointer(3, GL_INT, 0, vertices);
+ glTexCoordPointer(2, GL_INT, 0, tex_coords);
+ glDrawElements(GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_INT, indices);
+ glPopMatrix();
+}
+
+static void
+wlsc_surface_raise(struct wlsc_surface *surface)
+{
+ struct wlsc_compositor *compositor = surface->compositor;
+
+ wl_list_remove(&surface->link);
+ wl_list_insert(compositor->surface_list.prev, &surface->link);
+}
+
+static void
+wlsc_surface_lower(struct wlsc_surface *surface)
+{
+ struct wlsc_compositor *compositor = surface->compositor;
+
+ wl_list_remove(&surface->link);
+ wl_list_insert(&compositor->surface_list, &surface->link);
+}
+
+static void
+wlsc_vector_add(struct wlsc_vector *v1, struct wlsc_vector *v2)
+{
+ v1->x += v2->x;
+ v1->y += v2->y;
+ v1->z += v2->z;
+}
+
+static void
+wlsc_vector_subtract(struct wlsc_vector *v1, struct wlsc_vector *v2)
+{
+ v1->x -= v2->x;
+ v1->y -= v2->y;
+ v1->z -= v2->z;
+}
+
+static void
+wlsc_vector_scalar(struct wlsc_vector *v1, GLdouble s)
+{
+ v1->x *= s;
+ v1->y *= s;
+ v1->z *= s;
+}
+
+static void
+page_flip_handler(int fd, unsigned int frame,
+ unsigned int sec, unsigned int usec, void *data)
+{
+ struct wlsc_output *output = data;
+ struct wlsc_compositor *compositor = output->compositor;
+ uint32_t msecs;
+
+ msecs = sec * 1000 + usec / 1000;
+ wl_display_post_frame(compositor->wl_display,
+ &compositor->base,
+ compositor->current_frame, msecs);
+
+ wl_event_source_timer_update(compositor->timer_source, 5);
+ compositor->repaint_on_timeout = 1;
+
+ compositor->current_frame++;
+}
+
+static void
+repaint_output(struct wlsc_output *output)
+{
+ struct wlsc_compositor *ec = output->compositor;
+ struct wlsc_surface *es;
+ struct wlsc_input_device *eid;
+ double s = 3000;
+
+ glViewport(0, 0, output->width, output->height);
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glFrustum(-output->width / s, output->width / s,
+ -output->height / s, output->height / s, 1, 2 * s);
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ glClearColor(0, 0, 0, 1);
+
+ glTranslatef(-output->width / 2, -output->height / 2, -s / 2);
+
+ if (output->background)
+ wlsc_surface_draw(output->background);
+ else
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ wl_list_for_each(es, &ec->surface_list, link)
+ wlsc_surface_draw(es);
+
+ wl_list_for_each(eid, &ec->input_device_list, link)
+ wlsc_surface_draw(eid->sprite);
+
+ output->current ^= 1;
+
+ glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER_EXT,
+ GL_COLOR_ATTACHMENT0_EXT,
+ GL_RENDERBUFFER_EXT,
+ output->rbo[output->current]);
+ drmModePageFlip(ec->drm_fd, output->crtc_id,
+ output->fb_id[output->current ^ 1],
+ DRM_MODE_PAGE_FLIP_EVENT, output);
+}
+
+static void
+repaint(void *data)
+{
+ struct wlsc_compositor *ec = data;
+ struct wlsc_output *output;
+
+ if (!ec->repaint_needed) {
+ ec->repaint_on_timeout = 0;
+ return;
+ }
+
+ wl_list_for_each(output, &ec->output_list, link)
+ repaint_output(output);
+
+ ec->repaint_needed = 0;
+}
+
+static void
+wlsc_compositor_schedule_repaint(struct wlsc_compositor *compositor)
+{
+ struct wlsc_output *output;
+
+ compositor->repaint_needed = 1;
+ if (compositor->repaint_on_timeout)
+ return;
+
+ wl_list_for_each(output, &compositor->output_list, link)
+ drmModePageFlip(compositor->drm_fd, output->crtc_id,
+ output->fb_id[output->current ^ 1],
+ DRM_MODE_PAGE_FLIP_EVENT, output);
+}
+
+static void
+surface_destroy(struct wl_client *client,
+ struct wl_surface *surface)
+{
+ struct wlsc_surface *es = (struct wlsc_surface *) surface;
+ struct wlsc_compositor *ec = es->compositor;
+
+ wlsc_surface_destroy(es, ec);
+
+ wlsc_compositor_schedule_repaint(ec);
+}
+
+static void
+surface_attach(struct wl_client *client,
+ struct wl_surface *surface, uint32_t name,
+ uint32_t width, uint32_t height, uint32_t stride,
+ struct wl_object *visual)
+{
+ struct wlsc_surface *es = (struct wlsc_surface *) surface;
+ struct wlsc_compositor *ec = es->compositor;
+ EGLint attribs[] = {
+ EGL_IMAGE_WIDTH_INTEL, 0,
+ EGL_IMAGE_HEIGHT_INTEL, 0,
+ EGL_IMAGE_NAME_INTEL, 0,
+ EGL_IMAGE_STRIDE_INTEL, 0,
+ EGL_IMAGE_FORMAT_INTEL, EGL_FORMAT_RGBA_8888_KHR,
+ EGL_NONE
+ };
+
+ es->width = width;
+ es->height = height;
+
+ if (visual == &ec->argb_visual.base)
+ es->visual = &ec->argb_visual;
+ else if (visual == &ec->premultiplied_argb_visual.base)
+ es->visual = &ec->premultiplied_argb_visual;
+ else if (visual == &ec->rgb_visual.base)
+ es->visual = &ec->rgb_visual;
+ else
+ /* FIXME: Smack client with an exception event */;
+
+ glBindTexture(GL_TEXTURE_2D, es->texture);
+ glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_REPEAT);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+ if (es->image)
+ eglDestroyImageKHR(ec->display, es->image);
+
+ attribs[1] = width;
+ attribs[3] = height;
+ attribs[5] = name;
+ attribs[7] = stride / 4;
+
+ es->image = eglCreateImageKHR(ec->display, ec->context,
+ EGL_SYSTEM_IMAGE_INTEL,
+ NULL, attribs);
+ glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, es->image);
+
+}
+
+static void
+surface_map(struct wl_client *client,
+ struct wl_surface *surface,
+ int32_t x, int32_t y, int32_t width, int32_t height)
+{
+ struct wlsc_surface *es = (struct wlsc_surface *) surface;
+
+ es->map.x = x;
+ es->map.y = y;
+ es->map.width = width;
+ es->map.height = height;
+}
+
+static void
+surface_copy(struct wl_client *client,
+ struct wl_surface *surface,
+ int32_t dst_x, int32_t dst_y,
+ uint32_t name, uint32_t stride,
+ int32_t x, int32_t y, int32_t width, int32_t height)
+{
+}
+
+static void
+surface_damage(struct wl_client *client,
+ struct wl_surface *surface,
+ int32_t x, int32_t y, int32_t width, int32_t height)
+{
+ /* FIXME: This need to take a damage region, of course. */
+}
+
+const static struct wl_surface_interface surface_interface = {
+ surface_destroy,
+ surface_attach,
+ surface_map,
+ surface_copy,
+ surface_damage
+};
+
+static void
+compositor_create_surface(struct wl_client *client,
+ struct wl_compositor *compositor, uint32_t id)
+{
+ struct wlsc_compositor *ec = (struct wlsc_compositor *) compositor;
+ struct wlsc_surface *surface;
+
+ surface = malloc(sizeof *surface);
+ if (surface == NULL)
+ /* FIXME: Send OOM event. */
+ return;
+
+ wlsc_surface_init(surface, ec, NULL, 0, 0, 0, 0);
+
+ wl_list_insert(ec->surface_list.prev, &surface->link);
+ wl_client_add_surface(client, &surface->base,
+ &surface_interface, id);
+}
+
+static void
+compositor_commit(struct wl_client *client,
+ struct wl_compositor *compositor, uint32_t key)
+{
+ struct wlsc_compositor *ec = (struct wlsc_compositor *) compositor;
+
+ wlsc_compositor_schedule_repaint(ec);
+ wl_client_send_acknowledge(client, compositor, key, ec->current_frame);
+}
+
+const static struct wl_compositor_interface compositor_interface = {
+ compositor_create_surface,
+ compositor_commit
+};
+
+static void
+wlsc_surface_transform(struct wlsc_surface *surface,
+ int32_t x, int32_t y, int32_t *sx, int32_t *sy)
+{
+ /* Transform to surface coordinates. */
+ *sx = (x - surface->map.x) * surface->width / surface->map.width;
+ *sy = (y - surface->map.y) * surface->height / surface->map.height;
+}
+
+static void
+wlsc_input_device_set_keyboard_focus(struct wlsc_input_device *device,
+ struct wlsc_surface *surface)
+{
+ if (device->keyboard_focus == surface)
+ return;
+
+ if (device->keyboard_focus &&
+ (!surface || device->keyboard_focus->base.client != surface->base.client))
+ wl_surface_post_event(&device->keyboard_focus->base,
+ &device->base,
+ WL_INPUT_KEYBOARD_FOCUS, NULL, &device->keys);
+
+ if (surface)
+ wl_surface_post_event(&surface->base,
+ &device->base,
+ WL_INPUT_KEYBOARD_FOCUS,
+ &surface->base, &device->keys);
+
+ device->keyboard_focus = surface;
+}
+
+static void
+wlsc_input_device_set_pointer_focus(struct wlsc_input_device *device,
+ struct wlsc_surface *surface)
+{
+ if (device->pointer_focus == surface)
+ return;
+
+ if (device->pointer_focus &&
+ (!surface || device->pointer_focus->base.client != surface->base.client))
+ wl_surface_post_event(&device->pointer_focus->base,
+ &device->base,
+ WL_INPUT_POINTER_FOCUS, NULL);
+ if (surface)
+ wl_surface_post_event(&surface->base,
+ &device->base,
+ WL_INPUT_POINTER_FOCUS, &surface->base);
+
+ device->pointer_focus = surface;
+}
+
+static struct wlsc_surface *
+pick_surface(struct wlsc_input_device *device, int32_t *sx, int32_t *sy)
+{
+ struct wlsc_compositor *ec = device->ec;
+ struct wlsc_surface *es;
+
+ if (device->grab > 0) {
+ wlsc_surface_transform(device->grab_surface,
+ device->x, device->y, sx, sy);
+ return device->grab_surface;
+ }
+
+ wl_list_for_each(es, &ec->surface_list, link)
+ if (es->map.x <= device->x &&
+ device->x < es->map.x + es->map.width &&
+ es->map.y <= device->y &&
+ device->y < es->map.y + es->map.height) {
+ wlsc_surface_transform(es, device->x, device->y, sx, sy);
+ return es;
+ }
+
+ return NULL;
+}
+
+void
+notify_motion(struct wlsc_input_device *device, int x, int y)
+{
+ struct wlsc_surface *es;
+ struct wlsc_compositor *ec = device->ec;
+ struct wlsc_output *output;
+ const int hotspot_x = 16, hotspot_y = 16;
+ int32_t sx, sy;
+
+ if (!ec->vt_active)
+ return;
+
+ /* FIXME: We need some multi head love here. */
+ output = container_of(ec->output_list.next, struct wlsc_output, link);
+ if (x < output->x)
+ x = 0;
+ if (y < output->y)
+ y = 0;
+ if (x >= output->x + output->width)
+ x = output->x + output->width - 1;
+ if (y >= output->y + output->height)
+ y = output->y + output->height - 1;
+
+ device->x = x;
+ device->y = y;
+ es = pick_surface(device, &sx, &sy);
+
+ wlsc_input_device_set_pointer_focus(device, es);
+
+ if (es)
+ wl_surface_post_event(&es->base, &device->base,
+ WL_INPUT_MOTION, x, y, sx, sy);
+
+ device->sprite->map.x = x - hotspot_x;
+ device->sprite->map.y = y - hotspot_y;
+
+ wlsc_compositor_schedule_repaint(device->ec);
+}
+
+void
+notify_button(struct wlsc_input_device *device,
+ int32_t button, int32_t state)
+{
+ struct wlsc_surface *surface;
+ struct wlsc_compositor *compositor = device->ec;
+ int32_t sx, sy;
+
+ if (!compositor->vt_active)
+ return;
+
+ surface = pick_surface(device, &sx, &sy);
+ if (surface) {
+ if (state) {
+ wlsc_surface_raise(surface);
+ device->grab++;
+ device->grab_surface = surface;
+ wlsc_input_device_set_keyboard_focus(device,
+ surface);
+ } else {
+ device->grab--;
+ }
+
+ /* FIXME: Swallow click on raise? */
+ wl_surface_post_event(&surface->base, &device->base,
+ WL_INPUT_BUTTON, button, state,
+ device->x, device->y, sx, sy);
+
+ wlsc_compositor_schedule_repaint(compositor);
+ }
+}
+
+static void on_term_signal(int signal_number, void *data);
+
+void
+notify_key(struct wlsc_input_device *device,
+ uint32_t key, uint32_t state)
+{
+ struct wlsc_compositor *compositor = device->ec;
+ uint32_t *k, *end;
+ uint32_t modifier;
+
+ if (!compositor->vt_active)
+ return;
+
+ switch (key | compositor->modifier_state) {
+ case KEY_BACKSPACE | MODIFIER_CTRL | MODIFIER_ALT:
+ on_term_signal(SIGTERM, compositor);
+ return;
+ }
+
+ switch (key) {
+ case KEY_LEFTCTRL:
+ case KEY_RIGHTCTRL:
+ modifier = MODIFIER_CTRL;
+ break;
+
+ case KEY_LEFTALT:
+ case KEY_RIGHTALT:
+ modifier = MODIFIER_ALT;
+ break;
+
+ default:
+ modifier = 0;
+ break;
+ }
+
+ if (state)
+ compositor->modifier_state |= modifier;
+ else
+ compositor->modifier_state &= ~modifier;
+
+ end = device->keys.data + device->keys.size;
+ for (k = device->keys.data; k < end; k++) {
+ if (*k == key)
+ *k = *--end;
+ }
+ device->keys.size = (void *) end - device->keys.data;
+ if (state) {
+ k = wl_array_add(&device->keys, sizeof *k);
+ *k = key;
+ }
+
+ if (device->keyboard_focus != NULL)
+ wl_surface_post_event(&device->keyboard_focus->base,
+ &device->base,
+ WL_INPUT_KEY, key, state);
+}
+
+struct evdev_input_device *
+evdev_input_device_create(struct wlsc_input_device *device,
+ struct wl_display *display, const char *path);
+
+static void
+handle_surface_destroy(struct wlsc_listener *listener,
+ struct wlsc_surface *surface)
+{
+ struct wlsc_input_device *device =
+ container_of(listener, struct wlsc_input_device, listener);
+ struct wlsc_surface *focus;
+ int32_t sx, sy;
+
+ if (device->grab_surface == surface) {
+ device->grab_surface = NULL;
+ device->grab = 0;
+ }
+ if (device->keyboard_focus == surface)
+ wlsc_input_device_set_keyboard_focus(device, NULL);
+ if (device->pointer_focus == surface) {
+ focus = pick_surface(device, &sx, &sy);
+ wlsc_input_device_set_pointer_focus(device, focus);
+ fprintf(stderr, "lost pointer focus surface, reverting to %p\n", focus);
+ }
+}
+
+static struct wlsc_input_device *
+create_input_device(struct wlsc_compositor *ec)
+{
+ struct wlsc_input_device *device;
+
+ device = malloc(sizeof *device);
+ if (device == NULL)
+ return NULL;
+
+ memset(device, 0, sizeof *device);
+ device->base.interface = &wl_input_device_interface;
+ device->base.implementation = NULL;
+ wl_display_add_object(ec->wl_display, &device->base);
+ wl_display_add_global(ec->wl_display, &device->base, NULL);
+ device->x = 100;
+ device->y = 100;
+ device->ec = ec;
+
+ device->listener.func = handle_surface_destroy;
+ wl_list_insert(ec->surface_destroy_listener_list.prev,
+ &device->listener.link);
+ wl_list_insert(ec->input_device_list.prev, &device->link);
+
+ return device;
+}
+
+void
+wlsc_device_get_position(struct wlsc_input_device *device, int32_t *x, int32_t *y)
+{
+ *x = device->x;
+ *y = device->y;
+}
+
+static void
+post_output_geometry(struct wl_client *client, struct wl_object *global)
+{
+ struct wlsc_output *output =
+ container_of(global, struct wlsc_output, base);
+
+ wl_client_post_event(client, global,
+ WL_OUTPUT_GEOMETRY,
+ output->width, output->height);
+}
+
+static void
+on_drm_input(int fd, uint32_t mask, void *data)
+{
+ drmEventContext evctx;
+
+ memset(&evctx, 0, sizeof evctx);
+ evctx.version = DRM_EVENT_CONTEXT_VERSION;
+ evctx.page_flip_handler = page_flip_handler;
+ drmHandleEvent(fd, &evctx);
+}
+
+static int
+init_egl(struct wlsc_compositor *ec, struct udev_device *device)
+{
+ struct wl_event_loop *loop;
+ EGLDisplayTypeDRMMESA display;
+ EGLint major, minor;
+
+ display.type = EGL_DISPLAY_TYPE_DRM_MESA;
+ display.device = udev_device_get_devnode(device);
+ ec->display = eglGetDisplay((EGLNativeDisplayType) &display);
+ if (ec->display == NULL) {
+ fprintf(stderr, "failed to create display\n");
+ return -1;
+ }
+
+ if (!eglInitialize(ec->display, &major, &minor)) {
+ fprintf(stderr, "failed to initialize display\n");
+ return -1;
+ }
+
+ ec->context = eglCreateContext(ec->display, NULL, NULL, NULL);
+ if (ec->context == NULL) {
+ fprintf(stderr, "failed to create context\n");
+ return -1;
+ }
+
+ if (!eglMakeCurrent(ec->display, EGL_NO_SURFACE, EGL_NO_SURFACE, ec->context)) {
+ fprintf(stderr, "failed to make context current\n");
+ return -1;
+ }
+
+ glGenFramebuffers(1, &ec->fbo);
+ glBindFramebuffer(GL_FRAMEBUFFER_EXT, ec->fbo);
+
+ loop = wl_display_get_event_loop(ec->wl_display);
+ ec->drm_fd = display.fd;
+ ec->drm_source =
+ wl_event_loop_add_fd(loop, ec->drm_fd,
+ WL_EVENT_READABLE, on_drm_input, ec);
+
+ return 0;
+}
+
+static drmModeModeInfo builtin_1024x768 = {
+ 63500, /* clock */
+ 1024, 1072, 1176, 1328, 0,
+ 768, 771, 775, 798, 0,
+ 59920,
+ DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC,
+ 0,
+ "1024x768"
+};
+
+static int
+create_output_for_connector(struct wlsc_compositor *ec,
+ drmModeRes *resources,
+ drmModeConnector *connector)
+{
+ struct wlsc_output *output;
+ drmModeEncoder *encoder;
+ drmModeModeInfo *mode;
+ int i, ret;
+ EGLint name, handle, stride, attribs[] = {
+ EGL_IMAGE_WIDTH_INTEL, 0,
+ EGL_IMAGE_HEIGHT_INTEL, 0,
+ EGL_IMAGE_FORMAT_INTEL, EGL_FORMAT_RGBA_8888_KHR,
+ EGL_IMAGE_USE_INTEL, EGL_IMAGE_USE_SHARE_INTEL |
+ EGL_IMAGE_USE_SCANOUT_INTEL,
+ EGL_NONE
+ };
+
+ output = malloc(sizeof *output);
+ if (output == NULL)
+ return -1;
+
+ if (connector->count_modes > 0)
+ mode = &connector->modes[0];
+ else
+ mode = &builtin_1024x768;
+
+ encoder = drmModeGetEncoder(ec->drm_fd, connector->encoders[0]);
+ if (encoder == NULL) {
+ fprintf(stderr, "No encoder for connector.\n");
+ return -1;
+ }
+
+ for (i = 0; i < resources->count_crtcs; i++) {
+ if (encoder->possible_crtcs & (1 << i))
+ break;
+ }
+ if (i == resources->count_crtcs) {
+ fprintf(stderr, "No usable crtc for encoder.\n");
+ return -1;
+ }
+
+ output->compositor = ec;
+ output->crtc_id = resources->crtcs[i];
+ output->connector_id = connector->connector_id;
+ output->mode = *mode;
+ output->x = 0;
+ output->y = 0;
+ output->width = mode->hdisplay;
+ output->height = mode->vdisplay;
+
+ printf("using crtc %d, connector %d and encoder %d, mode %s\n",
+ output->crtc_id,
+ output->connector_id,
+ encoder->encoder_id,
+ mode->name);
+
+ drmModeFreeEncoder(encoder);
+
+ glGenRenderbuffers(2, output->rbo);
+ for (i = 0; i < 2; i++) {
+ glBindRenderbuffer(GL_RENDERBUFFER_EXT, output->rbo[i]);
+
+ attribs[1] = output->width;
+ attribs[3] = output->height;
+ output->image[i] = eglCreateImageKHR(ec->display, ec->context,
+ EGL_SYSTEM_IMAGE_INTEL,
+ NULL, attribs);
+ glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER, output->image[i]);
+ eglShareImageINTEL(ec->display, ec->context,
+ output->image[i], 0, &name, &handle, &stride);
+
+ ret = drmModeAddFB(ec->drm_fd, output->width, output->height,
+ 32, 32, stride * 4, handle, &output->fb_id[i]);
+ if (ret) {
+ fprintf(stderr, "failed to add fb %d: %m\n", i);
+ return -1;
+ }
+ }
+
+ output->current = 0;
+ glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER_EXT,
+ GL_COLOR_ATTACHMENT0_EXT,
+ GL_RENDERBUFFER_EXT,
+ output->rbo[output->current]);
+ ret = drmModeSetCrtc(ec->drm_fd, output->crtc_id,
+ output->fb_id[output->current ^ 1], 0, 0,
+ &output->connector_id, 1, &output->mode);
+ if (ret) {
+ fprintf(stderr, "failed to set mode: %m\n");
+ return -1;
+ }
+
+ output->base.interface = &wl_output_interface;
+ wl_display_add_object(ec->wl_display, &output->base);
+ wl_display_add_global(ec->wl_display, &output->base, post_output_geometry);
+ wl_list_insert(ec->output_list.prev, &output->link);
+
+ output->background = background_create(output, option_background);
+
+ return 0;
+}
+
+static int
+create_outputs(struct wlsc_compositor *ec)
+{
+ drmModeConnector *connector;
+ drmModeRes *resources;
+ int i;
+
+ resources = drmModeGetResources(ec->drm_fd);
+ if (!resources) {
+ fprintf(stderr, "drmModeGetResources failed\n");
+ return -1;
+ }
+
+ for (i = 0; i < resources->count_connectors; i++) {
+ connector = drmModeGetConnector(ec->drm_fd, resources->connectors[i]);
+ if (connector == NULL)
+ continue;
+
+ if (connector->connection == DRM_MODE_CONNECTED &&
+ (option_connector == 0 ||
+ connector->connector_id == option_connector))
+ if (create_output_for_connector(ec, resources, connector) < 0)
+ return -1;
+
+ drmModeFreeConnector(connector);
+ }
+
+ if (wl_list_empty(&ec->output_list)) {
+ fprintf(stderr, "No currently active connector found.\n");
+ return -1;
+ }
+
+ drmModeFreeResources(resources);
+
+ return 0;
+}
+
+static const struct wl_interface visual_interface = {
+ "visual", 1,
+};
+
+static void
+add_visuals(struct wlsc_compositor *ec)
+{
+ ec->argb_visual.base.interface = &visual_interface;
+ ec->argb_visual.base.implementation = NULL;
+ wl_display_add_object(ec->wl_display, &ec->argb_visual.base);
+ wl_display_add_global(ec->wl_display, &ec->argb_visual.base, NULL);
+
+ ec->premultiplied_argb_visual.base.interface = &visual_interface;
+ ec->premultiplied_argb_visual.base.implementation = NULL;
+ wl_display_add_object(ec->wl_display,
+ &ec->premultiplied_argb_visual.base);
+ wl_display_add_global(ec->wl_display,
+ &ec->premultiplied_argb_visual.base, NULL);
+
+ ec->rgb_visual.base.interface = &visual_interface;
+ ec->rgb_visual.base.implementation = NULL;
+ wl_display_add_object(ec->wl_display, &ec->rgb_visual.base);
+ wl_display_add_global(ec->wl_display, &ec->rgb_visual.base, NULL);
+}
+
+static void on_enter_vt(int signal_number, void *data)
+{
+ struct wlsc_compositor *ec = data;
+ struct wlsc_output *output;
+ int ret;
+
+ ret = drmSetMaster(ec->drm_fd);
+ if (ret) {
+ fprintf(stderr, "failed to set drm master\n");
+ return;
+ }
+
+ ioctl(ec->tty_fd, VT_RELDISP, VT_ACKACQ);
+ ec->vt_active = TRUE;
+
+ wl_list_for_each(output, &ec->output_list, link) {
+ ret = drmModeSetCrtc(ec->drm_fd, output->crtc_id,
+ output->fb_id[output->current ^ 1], 0, 0,
+ &output->connector_id, 1, &output->mode);
+ if (ret)
+ fprintf(stderr, "failed to set mode for connector %d: %m\n",
+ output->connector_id);
+ }
+}
+
+static void on_leave_vt(int signal_number, void *data)
+{
+ struct wlsc_compositor *ec = data;
+ int ret;
+
+ ret = drmDropMaster(ec->drm_fd);
+ if (ret) {
+ fprintf(stderr, "failed to drop drm master\n");
+ return;
+ }
+
+ ioctl (ec->tty_fd, VT_RELDISP, 1);
+ ec->vt_active = FALSE;
+}
+
+static void
+on_tty_input(int fd, uint32_t mask, void *data)
+{
+ struct wlsc_compositor *ec = data;
+
+ /* Ignore input to tty. We get keyboard events from evdev
+ */
+ tcflush(ec->tty_fd, TCIFLUSH);
+}
+
+static void on_term_signal(int signal_number, void *data)
+{
+ struct wlsc_compositor *ec = data;
+
+ if (tcsetattr(ec->tty_fd, TCSANOW, &ec->terminal_attributes) < 0)
+ fprintf(stderr, "could not restore terminal to canonical mode\n");
+
+ exit(0);
+}
+
+static int setup_tty(struct wlsc_compositor *ec, struct wl_event_loop *loop)
+{
+ struct termios raw_attributes;
+ struct vt_mode mode = { 0 };
+
+ ec->tty_fd = open("/dev/tty0", O_RDWR | O_NOCTTY);
+ if (ec->tty_fd <= 0) {
+ fprintf(stderr, "failed to open active tty: %m\n");
+ return -1;
+ }
+
+ if (tcgetattr(ec->tty_fd, &ec->terminal_attributes) < 0) {
+ fprintf(stderr, "could not get terminal attributes: %m\n");
+ return -1;
+ }
+
+ /* Ignore control characters and disable echo */
+ raw_attributes = ec->terminal_attributes;
+ cfmakeraw(&raw_attributes);
+
+ /* Fix up line endings to be normal (cfmakeraw hoses them) */
+ raw_attributes.c_oflag |= OPOST | OCRNL;
+
+ if (tcsetattr(ec->tty_fd, TCSANOW, &raw_attributes) < 0)
+ fprintf(stderr, "could not put terminal into raw mode: %m\n");
+
+ ec->term_signal_source =
+ wl_event_loop_add_signal(loop, SIGTERM, on_term_signal, ec);
+
+ ec->tty_input_source =
+ wl_event_loop_add_fd(loop, ec->tty_fd,
+ WL_EVENT_READABLE, on_tty_input, ec);
+
+ ec->vt_active = TRUE;
+ mode.mode = VT_PROCESS;
+ mode.relsig = SIGUSR1;
+ mode.acqsig = SIGUSR2;
+ if (!ioctl(ec->tty_fd, VT_SETMODE, &mode) < 0) {
+ fprintf(stderr, "failed to take control of vt handling\n");
+ }
+
+ ec->leave_vt_source =
+ wl_event_loop_add_signal(loop, SIGUSR1, on_leave_vt, ec);
+ ec->enter_vt_source =
+ wl_event_loop_add_signal(loop, SIGUSR2, on_enter_vt, ec);
+
+ return 0;
+}
+
+static int
+init_libudev(struct wlsc_compositor *ec)
+{
+ struct udev_enumerate *e;
+ struct udev_list_entry *entry;
+ struct udev_device *device;
+ const char *path;
+ struct wlsc_input_device *input_device;
+
+ ec->udev = udev_new();
+ if (ec->udev == NULL) {
+ fprintf(stderr, "failed to initialize udev context\n");
+ return -1;
+ }
+
+ input_device = create_input_device(ec);
+
+ e = udev_enumerate_new(ec->udev);
+ udev_enumerate_add_match_subsystem(e, "input");
+ udev_enumerate_add_match_property(e, "WAYLAND_SEAT", "1");
+ udev_enumerate_scan_devices(e);
+ udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
+ path = udev_list_entry_get_name(entry);
+ device = udev_device_new_from_syspath(ec->udev, path);
+ evdev_input_device_create(input_device, ec->wl_display,
+ udev_device_get_devnode(device));
+ }
+ udev_enumerate_unref(e);
+
+ e = udev_enumerate_new(ec->udev);
+ udev_enumerate_add_match_subsystem(e, "drm");
+ udev_enumerate_add_match_property(e, "WAYLAND_SEAT", "1");
+ udev_enumerate_scan_devices(e);
+ udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
+ path = udev_list_entry_get_name(entry);
+ device = udev_device_new_from_syspath(ec->udev, path);
+ if (init_egl(ec, device) < 0) {
+ fprintf(stderr, "failed to initialize egl\n");
+ return -1;
+ }
+ if (create_outputs(ec) < 0) {
+ fprintf(stderr, "failed to create output for %s\n", path);
+ return -1;
+ }
+ }
+ udev_enumerate_unref(e);
+
+ /* Create the pointer surface now that we have a current EGL context. */
+ input_device->sprite =
+ pointer_create(ec, input_device->x, input_device->y, 64, 64);
+
+ return 0;
+}
+
+static struct wlsc_compositor *
+wlsc_compositor_create(struct wl_display *display)
+{
+ struct wlsc_compositor *ec;
+ struct screenshooter *shooter;
+ struct wl_event_loop *loop;
+
+ ec = malloc(sizeof *ec);
+ if (ec == NULL)
+ return NULL;
+
+ memset(ec, 0, sizeof *ec);
+ ec->wl_display = display;
+
+ wl_display_set_compositor(display, &ec->base, &compositor_interface);
+
+ add_visuals(ec);
+
+ wl_list_init(&ec->surface_list);
+ wl_list_init(&ec->input_device_list);
+ wl_list_init(&ec->output_list);
+ wl_list_init(&ec->surface_destroy_listener_list);
+ if (init_libudev(ec) < 0) {
+ fprintf(stderr, "failed to initialize devices\n");
+ return NULL;
+ }
+
+ shooter = screenshooter_create(ec);
+ wl_display_add_object(display, &shooter->base);
+ wl_display_add_global(display, &shooter->base, NULL);
+
+ loop = wl_display_get_event_loop(ec->wl_display);
+
+ setup_tty(ec, loop);
+
+ ec->timer_source = wl_event_loop_add_timer(loop, repaint, ec);
+ wlsc_compositor_schedule_repaint(ec);
+
+ return ec;
+}
+
+/* The plan here is to generate a random anonymous socket name and
+ * advertise that through a service on the session dbus.
+ */
+static const char socket_name[] = "\0wayland";
+
+int main(int argc, char *argv[])
+{
+ struct wl_display *display;
+ struct wlsc_compositor *ec;
+ GError *error = NULL;
+ GOptionContext *context;
+
+ context = g_option_context_new(NULL);
+ g_option_context_add_main_entries(context, option_entries, "Wayland");
+ if (!g_option_context_parse(context, &argc, &argv, &error)) {
+ fprintf(stderr, "option parsing failed: %s\n", error->message);
+ exit(EXIT_FAILURE);
+ }
+
+ display = wl_display_create();
+
+ ec = wlsc_compositor_create(display);
+ if (ec == NULL) {
+ fprintf(stderr, "failed to create compositor\n");
+ exit(EXIT_FAILURE);
+ }
+
+ if (wl_display_add_socket(display, socket_name, sizeof socket_name)) {
+ fprintf(stderr, "failed to add socket: %m\n");
+ exit(EXIT_FAILURE);
+ }
+
+ wl_display_run(display);
+
+ return 0;
+}