compositor-drm: Fix compilation error caused by typo.
[profile/ivi/weston.git] / compositor / compositor-drm.c
index de15bfe..536760b 100644 (file)
  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
+#define _GNU_SOURCE
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <fcntl.h>
 #include <unistd.h>
 
-#include <signal.h>
-#include <linux/kd.h>
-#include <linux/vt.h>
-#include <linux/input.h>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
 
-#define GL_GLEXT_PROTOTYPES
-#define EGL_EGLEXT_PROTOTYPES
-#include <GLES2/gl2.h>
-#include <GLES2/gl2ext.h>
-#include <EGL/egl.h>
-#include <EGL/eglext.h>
+#include <gbm.h>
 
 #include "compositor.h"
 
@@ -42,254 +37,225 @@ struct drm_compositor {
        struct udev *udev;
        struct wl_event_source *drm_source;
 
-       /* tty handling state */
-       int tty_fd;
-       uint32_t vt_active : 1;
+       struct udev_monitor *udev_monitor;
+       struct wl_event_source *udev_drm_source;
+
+       struct {
+               int fd;
+       } drm;
+       struct gbm_device *gbm;
+       uint32_t crtc_allocator;
+       uint32_t connector_allocator;
+       struct tty *tty;
+};
 
-       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 drm_mode {
+       struct wlsc_mode base;
+       drmModeModeInfo mode_info;
 };
 
 struct drm_output {
        struct wlsc_output   base;
 
-       drmModeModeInfo mode;
        uint32_t crtc_id;
        uint32_t connector_id;
        GLuint rbo[2];
        uint32_t fb_id[2];
        EGLImageKHR image[2];
+       struct gbm_bo *bo[2];
        uint32_t current;       
-};
 
-struct drm_input {
-       struct wlsc_input_device base;
-};
+       struct wlsc_surface *scanout_surface;
 
-struct evdev_input_device {
-       struct drm_input *master;
-       struct wl_event_source *source;
-       int tool, new_x, new_y;
-       int base_x, base_y;
-       int fd;
+       uint32_t fs_surf_fb_id;
+       uint32_t pending_fs_surf_fb_id;
 };
 
-static void evdev_input_device_data(int fd, uint32_t mask, void *data)
+static int
+drm_output_prepare_render(struct wlsc_output *output_base)
 {
-       struct drm_compositor *c;
-       struct evdev_input_device *device = data;
-       struct input_event ev[8], *e, *end;
-       int len, value, dx, dy, absolute_event;
-       int x, y;
-       uint32_t time;
-
-       c = (struct drm_compositor *)
-               device->master->base.input_device.compositor;
-       if (!c->vt_active)
-               return;
+       struct drm_output *output = (struct drm_output *) output_base;
 
-       dx = 0;
-       dy = 0;
-       absolute_event = 0;
-       x = device->master->base.input_device.x;
-       y = device->master->base.input_device.y;
+       glFramebufferRenderbuffer(GL_FRAMEBUFFER,
+                                 GL_COLOR_ATTACHMENT0,
+                                 GL_RENDERBUFFER,
+                                 output->rbo[output->current]);
 
-       len = read(fd, &ev, sizeof ev);
-       if (len < 0 || len % sizeof e[0] != 0) {
-               /* FIXME: handle error... reopen device? */;
-               return;
-       }
+       if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
+               return -1;
 
-       e = ev;
-       end = (void *) ev + len;
-       for (e = ev; e < end; e++) {
-               /* Get the signed value, earlier kernels had this as unsigned */
-               value = e->value;
-               time = e->time.tv_sec * 1000 + e->time.tv_usec / 1000;
+       return 0;
+}
 
-               switch (e->type) {
-               case EV_REL:
-                       switch (e->code) {
-                       case REL_X:
-                               dx += value;
-                               break;
+static int
+drm_output_present(struct wlsc_output *output_base)
+{
+       struct drm_output *output = (struct drm_output *) output_base;
+       struct drm_compositor *c =
+               (struct drm_compositor *) output->base.compositor;
+       uint32_t fb_id = 0;
 
-                       case REL_Y:
-                               dy += value;
-                               break;
-                       }
-                       break;
+       if (drm_output_prepare_render(&output->base))
+               return -1;
+       glFlush();
 
-               case EV_ABS:
-                       absolute_event = 1;
-                       switch (e->code) {
-                       case ABS_X:
-                               if (device->new_x) {
-                                       device->base_x = x - value;
-                                       device->new_x = 0;
-                               }
-                               x = device->base_x + value;
-                               break;
-                       case ABS_Y:
-                               if (device->new_y) {
-                                       device->base_y = y - value;
-                                       device->new_y = 0;
-                               }
-                               y = device->base_y + value;
-                               break;
-                       }
-                       break;
+       output->current ^= 1;
 
-               case EV_KEY:
-                       if (value == 2)
-                               break;
-
-                       switch (e->code) {
-                       case BTN_TOUCH:
-                       case BTN_TOOL_PEN:
-                       case BTN_TOOL_RUBBER:
-                       case BTN_TOOL_BRUSH:
-                       case BTN_TOOL_PENCIL:
-                       case BTN_TOOL_AIRBRUSH:
-                       case BTN_TOOL_FINGER:
-                       case BTN_TOOL_MOUSE:
-                       case BTN_TOOL_LENS:
-                               if (device->tool == 0 && value) {
-                                       device->new_x = 1;
-                                       device->new_y = 1;
-                               }
-                               device->tool = value ? e->code : 0;
-                               break;
-
-                       case BTN_LEFT:
-                       case BTN_RIGHT:
-                       case BTN_MIDDLE:
-                       case BTN_SIDE:
-                       case BTN_EXTRA:
-                       case BTN_FORWARD:
-                       case BTN_BACK:
-                       case BTN_TASK:
-                               notify_button(&device->master->base.input_device,
-                                             time, e->code, value);
-                               break;
-
-                       default:
-                               notify_key(&device->master->base.input_device,
-                                          time, e->code, value);
-                               break;
-                       }
-               }
+       if (output->scanout_surface != NULL) {
+               output->scanout_surface = NULL;
+               fb_id = output->fs_surf_fb_id;
+       } else {
+               fb_id = output->fb_id[output->current ^ 1];
        }
 
-       if (dx != 0 || dy != 0)
-               notify_motion(&device->master->base.input_device,
-                             time, x + dx, y + dy);
-       if (absolute_event && device->tool)
-               notify_motion(&device->master->base.input_device, time, x, y);
+       drmModePageFlip(c->drm.fd, output->crtc_id,
+                       fb_id,
+                       DRM_MODE_PAGE_FLIP_EVENT, output);
+
+       return 0;
 }
 
-static struct evdev_input_device *
-evdev_input_device_create(struct drm_input *master,
-                         struct wl_display *display, const char *path)
+static void
+page_flip_handler(int fd, unsigned int frame,
+                 unsigned int sec, unsigned int usec, void *data)
 {
-       struct evdev_input_device *device;
-       struct wl_event_loop *loop;
-
-       device = malloc(sizeof *device);
-       if (device == NULL)
-               return NULL;
-
-       device->tool = 1;
-       device->new_x = 1;
-       device->new_y = 1;
-       device->master = master;
+       struct drm_output *output = (struct drm_output *) data;
+       struct drm_compositor *c =
+               (struct drm_compositor *) output->base.compositor;
+       uint32_t msecs;
 
-       device->fd = open(path, O_RDONLY);
-       if (device->fd < 0) {
-               free(device);
-               fprintf(stderr, "couldn't create pointer for %s: %m\n", path);
-               return NULL;
+       if (output->pending_fs_surf_fb_id) {
+               drmModeRmFB(c->drm.fd, output->pending_fs_surf_fb_id);
+               output->pending_fs_surf_fb_id = 0;
        }
 
-       loop = wl_display_get_event_loop(display);
-       device->source = wl_event_loop_add_fd(loop, device->fd,
-                                             WL_EVENT_READABLE,
-                                             evdev_input_device_data, device);
-       if (device->source == NULL) {
-               close(device->fd);
-               free(device);
-               return NULL;
+       if (output->fs_surf_fb_id) {
+               output->pending_fs_surf_fb_id = output->fs_surf_fb_id;
+               output->fs_surf_fb_id = 0;
        }
 
-       return device;
+       msecs = sec * 1000 + usec / 1000;
+       wlsc_output_finish_frame(&output->base, msecs);
 }
 
-static void
-drm_input_create(struct drm_compositor *c)
+static int
+drm_output_prepare_scanout_surface(struct wlsc_output *output_base,
+                                  struct wlsc_surface *es)
 {
-       struct drm_input *input;
-       struct udev_enumerate *e;
-        struct udev_list_entry *entry;
-       struct udev_device *device;
-       const char *path;
+       struct drm_output *output = (struct drm_output *) output_base;
+       struct drm_compositor *c =
+               (struct drm_compositor *) output->base.compositor;
+       EGLint handle, stride;
+       int ret;
+       uint32_t fb_id = 0;
+       struct gbm_bo *bo;
+
+       if (es->x != output->base.x ||
+           es->y != output->base.y ||
+           es->width != output->base.current->width ||
+           es->height != output->base.current->height ||
+           es->image == EGL_NO_IMAGE_KHR)
+               return -1;
 
-       input = malloc(sizeof *input);
-       if (input == NULL)
-               return;
+       bo = gbm_bo_create_from_egl_image(c->gbm,
+                                         c->base.display, es->image,
+                                         es->width, es->height,
+                                         GBM_BO_USE_SCANOUT);
 
-       memset(input, 0, sizeof *input);
-       wlsc_input_device_init(&input->base, &c->base);
+       handle = gbm_bo_get_handle(bo).s32;
+       stride = gbm_bo_get_pitch(bo);
 
-       e = udev_enumerate_new(c->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(c->udev, path);
-               evdev_input_device_create(input, c->base.wl_display,
-                                         udev_device_get_devnode(device));
-       }
-        udev_enumerate_unref(e);
+       gbm_bo_destroy(bo);
 
-       c->base.input_device = &input->base.input_device;
-}
+       if (handle == 0)
+               return -1;
 
-static void
-drm_compositor_present(struct wlsc_compositor *ec)
-{
-       struct drm_compositor *c = (struct drm_compositor *) ec;
-       struct drm_output *output;
+       ret = drmModeAddFB(c->drm.fd,
+                          output->base.current->width,
+                          output->base.current->height,
+                          32, 32, stride, handle, &fb_id);
 
-       wl_list_for_each(output, &ec->output_list, base.link) {
-               output->current ^= 1;
+       if (ret)
+               return -1;
 
-               glFramebufferRenderbuffer(GL_FRAMEBUFFER,
-                                         GL_COLOR_ATTACHMENT0,
-                                         GL_RENDERBUFFER,
-                                         output->rbo[output->current]);
+       output->fs_surf_fb_id = fb_id;
+       output->scanout_surface = es;
 
-               drmModePageFlip(c->base.drm.fd, output->crtc_id,
-                               output->fb_id[output->current ^ 1],
-                               DRM_MODE_PAGE_FLIP_EVENT, output);
-       }       
+       return 0;
 }
 
-static void
-page_flip_handler(int fd, unsigned int frame,
-                 unsigned int sec, unsigned int usec, void *data)
+static int
+drm_output_set_cursor(struct wlsc_output *output_base,
+                     struct wlsc_input_device *eid)
 {
-       struct wlsc_output *output = data;
-       struct wlsc_compositor *compositor = output->compositor;
-       uint32_t msecs;
+       struct drm_output *output = (struct drm_output *) output_base;
+       struct drm_compositor *c =
+               (struct drm_compositor *) output->base.compositor;
+       EGLint handle, stride;
+       int ret = -1;
+       pixman_region32_t cursor_region;
+       struct gbm_bo *bo;
+
+       if (eid == NULL) {
+               drmModeSetCursor(c->drm.fd, output->crtc_id, 0, 0, 0);
+               return 0;
+       }
 
-       msecs = sec * 1000 + usec / 1000;
-       wlsc_compositor_finish_frame(compositor, msecs);
+       pixman_region32_init_rect(&cursor_region,
+                                 eid->sprite->x, eid->sprite->y,
+                                 eid->sprite->width, eid->sprite->height);
+
+       pixman_region32_intersect_rect(&cursor_region, &cursor_region,
+                                      output->base.x, output->base.y,
+                                      output->base.current->width,
+                                      output->base.current->height);
+
+       if (!pixman_region32_not_empty(&cursor_region))
+               goto out;
+
+       if (eid->sprite->image == EGL_NO_IMAGE_KHR)
+               goto out;
+
+       if (eid->sprite->width > 64 || eid->sprite->height > 64)
+               goto out;
+       
+       bo = gbm_bo_create_from_egl_image(c->gbm,
+                                         c->base.display,
+                                         eid->sprite->image, 64, 64,
+                                         GBM_BO_USE_CURSOR_64X64);
+
+       handle = gbm_bo_get_handle(bo).s32;
+       stride = gbm_bo_get_pitch(bo);
+
+       gbm_bo_destroy(bo);
+
+       if (stride != 64 * 4) {
+               fprintf(stderr, "info: cursor stride is != 64\n");
+               goto out;
+       }
+
+       ret = drmModeSetCursor(c->drm.fd, output->crtc_id, handle, 64, 64);
+       if (ret) {
+               fprintf(stderr, "failed to set cursor: %s\n", strerror(-ret));
+               goto out;
+       }
+
+       ret = drmModeMoveCursor(c->drm.fd, output->crtc_id,
+                               eid->sprite->x - output->base.x,
+                               eid->sprite->y - output->base.y);
+       if (ret) {
+               fprintf(stderr, "failed to move cursor: %s\n", strerror(-ret));
+               goto out;
+       }
+
+out:
+       pixman_region32_fini(&cursor_region);
+       if (ret)
+               drmModeSetCursor(c->drm.fd, output->crtc_id, 0, 0, 0);
+       return ret;
 }
 
-static void
+static int
 on_drm_input(int fd, uint32_t mask, void *data)
 {
        drmEventContext evctx;
@@ -298,6 +264,8 @@ on_drm_input(int fd, uint32_t mask, void *data)
        evctx.version = DRM_EVENT_CONTEXT_VERSION;
        evctx.page_flip_handler = page_flip_handler;
        drmHandleEvent(fd, &evctx);
+
+       return 1;
 }
 
 static int
@@ -312,7 +280,7 @@ init_egl(struct drm_compositor *ec, struct udev_device *device)
        };
 
        filename = udev_device_get_devnode(device);
-       fd = open(filename, O_RDWR);
+       fd = open(filename, O_RDWR, O_CLOEXEC);
        if (fd < 0) {
                /* Probably permissions error */
                fprintf(stderr, "couldn't open %s, skipping\n",
@@ -320,9 +288,10 @@ init_egl(struct drm_compositor *ec, struct udev_device *device)
                return -1;
        }
 
-       wlsc_drm_init(&ec->base, fd, filename);
-
-       ec->base.display = eglGetDRMDisplayMESA(ec->base.drm.fd);
+       setenv("EGL_PLATFORM", "drm", 1);
+       ec->drm.fd = fd;
+       ec->gbm = gbm_create_device(ec->drm.fd);
+       ec->base.display = eglGetDisplay(ec->gbm);
        if (ec->base.display == NULL) {
                fprintf(stderr, "failed to create display\n");
                return -1;
@@ -370,40 +339,67 @@ static drmModeModeInfo builtin_1024x768 = {
        "1024x768"
 };
 
+
+static int
+drm_output_add_mode(struct drm_output *output, drmModeModeInfo *info)
+{
+       struct drm_mode *mode;
+
+       mode = malloc(sizeof *mode);
+       if (mode == NULL)
+               return -1;
+
+       mode->base.flags = 0;
+       mode->base.width = info->hdisplay;
+       mode->base.height = info->vdisplay;
+       mode->base.refresh = info->vrefresh;
+       mode->mode_info = *info;
+       wl_list_insert(output->base.mode_list.prev, &mode->base.link);
+
+       return 0;
+}
+
+static int
+drm_subpixel_to_wayland(int drm_value)
+{
+       switch (drm_value) {
+       default:
+       case DRM_MODE_SUBPIXEL_UNKNOWN:
+               return WL_OUTPUT_SUBPIXEL_UNKNOWN;
+       case DRM_MODE_SUBPIXEL_NONE:
+               return WL_OUTPUT_SUBPIXEL_NONE;
+       case DRM_MODE_SUBPIXEL_HORIZONTAL_RGB:
+               return WL_OUTPUT_SUBPIXEL_HORIZONTAL_RGB;
+       case DRM_MODE_SUBPIXEL_HORIZONTAL_BGR:
+               return WL_OUTPUT_SUBPIXEL_HORIZONTAL_BGR;
+       case DRM_MODE_SUBPIXEL_VERTICAL_RGB:
+               return WL_OUTPUT_SUBPIXEL_VERTICAL_RGB;
+       case DRM_MODE_SUBPIXEL_VERTICAL_BGR:
+               return WL_OUTPUT_SUBPIXEL_VERTICAL_BGR;
+       }
+}
+
 static int
 create_output_for_connector(struct drm_compositor *ec,
                            drmModeRes *resources,
-                           drmModeConnector *connector)
+                           drmModeConnector *connector,
+                           int x, int y)
 {
        struct drm_output *output;
+       struct drm_mode *drm_mode;
        drmModeEncoder *encoder;
-       drmModeModeInfo *mode;
        int i, ret;
-       EGLint handle, stride, attribs[] = {
-               EGL_WIDTH,              0,
-               EGL_HEIGHT,             0,
-               EGL_DRM_BUFFER_FORMAT_MESA,     EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
-               EGL_DRM_BUFFER_USE_MESA,        EGL_DRM_BUFFER_USE_SCANOUT_MESA,
-               EGL_NONE
-       };
-
-       output = malloc(sizeof *output);
-       if (output == NULL)
-               return -1;
-
-       if (connector->count_modes > 0) 
-               mode = &connector->modes[0];
-       else
-               mode = &builtin_1024x768;
+       unsigned handle, stride;
 
-       encoder = drmModeGetEncoder(ec->base.drm.fd, connector->encoders[0]);
+       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))
+               if (encoder->possible_crtcs & (1 << i) &&
+                   !(ec->crtc_allocator & (1 << resources->crtcs[i])))
                        break;
        }
        if (i == resources->count_crtcs) {
@@ -411,13 +407,36 @@ create_output_for_connector(struct drm_compositor *ec,
                return -1;
        }
 
+       output = malloc(sizeof *output);
+       if (output == NULL)
+               return -1;
+
        memset(output, 0, sizeof *output);
-       wlsc_output_init(&output->base, &ec->base, 0, 0,
-                        mode->hdisplay, mode->vdisplay);
+       output->base.subpixel = drm_subpixel_to_wayland(connector->subpixel);
+       output->base.make = "unknown";
+       output->base.model = "unknown";
+       wl_list_init(&output->base.mode_list);
 
        output->crtc_id = resources->crtcs[i];
+       ec->crtc_allocator |= (1 << output->crtc_id);
        output->connector_id = connector->connector_id;
-       output->mode = *mode;
+       ec->connector_allocator |= (1 << output->connector_id);
+
+       for (i = 0; i < connector->count_modes; i++)
+               drm_output_add_mode(output, &connector->modes[i]);
+       if (connector->count_modes == 0)
+               drm_output_add_mode(output, &builtin_1024x768);
+
+       drm_mode = container_of(output->base.mode_list.next,
+                               struct drm_mode, base.link);
+       output->base.current = &drm_mode->base;
+       drm_mode->base.flags =
+               WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
+
+       wlsc_output_init(&output->base, &ec->base, x, y,
+                        connector->mmWidth, connector->mmHeight, 0);
+
+       wl_list_insert(ec->base.output_list.prev, &output->base.link);
 
        drmModeFreeEncoder(encoder);
 
@@ -425,17 +444,26 @@ create_output_for_connector(struct drm_compositor *ec,
        for (i = 0; i < 2; i++) {
                glBindRenderbuffer(GL_RENDERBUFFER, output->rbo[i]);
 
-               attribs[1] = output->base.width;
-               attribs[3] = output->base.height;
-               output->image[i] =
-                       eglCreateDRMImageMESA(ec->base.display, attribs);
-               glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER,
-                                                      output->image[i]);
-               eglExportDRMImageMESA(ec->base.display, output->image[i],
-                                     NULL, &handle, &stride);
-
-               ret = drmModeAddFB(ec->base.drm.fd,
-                                  output->base.width, output->base.height,
+               output->bo[i] =
+                       gbm_bo_create(ec->gbm,
+                                     output->base.current->width,
+                                     output->base.current->height,
+                                     GBM_BO_FORMAT_XRGB8888,
+                                     GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING);
+               output->image[i] = ec->base.create_image(ec->base.display,
+                                                        NULL,
+                                                        EGL_NATIVE_PIXMAP_KHR,
+                                                        output->bo[i], NULL);
+
+
+               ec->base.image_target_renderbuffer_storage(GL_RENDERBUFFER,
+                                                          output->image[i]);
+               stride = gbm_bo_get_pitch(output->bo[i]);
+               handle = gbm_bo_get_handle(output->bo[i]).u32;
+
+               ret = drmModeAddFB(ec->drm.fd,
+                                  output->base.current->width,
+                                  output->base.current->height,
                                   32, 32, stride, handle, &output->fb_id[i]);
                if (ret) {
                        fprintf(stderr, "failed to add fb %d: %m\n", i);
@@ -448,15 +476,21 @@ create_output_for_connector(struct drm_compositor *ec,
                                  GL_COLOR_ATTACHMENT0,
                                  GL_RENDERBUFFER,
                                  output->rbo[output->current]);
-       ret = drmModeSetCrtc(ec->base.drm.fd, output->crtc_id,
+       ret = drmModeSetCrtc(ec->drm.fd, output->crtc_id,
                             output->fb_id[output->current ^ 1], 0, 0,
-                            &output->connector_id, 1, &output->mode);
+                            &output->connector_id, 1,
+                            &drm_mode->mode_info);
        if (ret) {
                fprintf(stderr, "failed to set mode: %m\n");
                return -1;
        }
 
-       wl_list_insert(ec->base.output_list.prev, &output->base.link);
+       output->scanout_surface = NULL;
+       output->base.prepare_render = drm_output_prepare_render;
+       output->base.present = drm_output_present;
+       output->base.prepare_scanout_surface =
+               drm_output_prepare_scanout_surface;
+       output->base.set_hardware_cursor = drm_output_set_cursor;
 
        return 0;
 }
@@ -467,24 +501,31 @@ create_outputs(struct drm_compositor *ec, int option_connector)
        drmModeConnector *connector;
        drmModeRes *resources;
        int i;
+       int x = 0, y = 0;
 
-       resources = drmModeGetResources(ec->base.drm.fd);
+       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->base.drm.fd, resources->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)
+                    connector->connector_id == option_connector)) {
+                       if (create_output_for_connector(ec, resources,
+                                                       connector, x, y) < 0)
                                return -1;
 
+                       x += container_of(ec->base.output_list.prev,
+                                         struct wlsc_output,
+                                         link)->current->width;
+               }
+
                drmModeFreeConnector(connector);
        }
 
@@ -498,124 +539,184 @@ create_outputs(struct drm_compositor *ec, int option_connector)
        return 0;
 }
 
-static void on_enter_vt(int signal_number, void *data)
+static int
+destroy_output(struct drm_output *output)
 {
-       struct drm_compositor *ec = data;
-       struct drm_output *output;
-       int ret;
+       struct drm_compositor *ec =
+               (struct drm_compositor *) output->base.compositor;
+       int i;
 
-       ret = drmSetMaster(ec->base.drm.fd);
-       if (ret) {
-               fprintf(stderr, "failed to set drm master\n");
-               kill(0, SIGTERM);
-               return;
-       }
+       glFramebufferRenderbuffer(GL_FRAMEBUFFER,
+                                 GL_COLOR_ATTACHMENT0,
+                                 GL_RENDERBUFFER,
+                                 0);
 
-       fprintf(stderr, "enter vt\n");
+       glBindRenderbuffer(GL_RENDERBUFFER, 0);
+       glDeleteRenderbuffers(2, output->rbo);
 
-       ioctl(ec->tty_fd, VT_RELDISP, VT_ACKACQ);
-       ret = ioctl(ec->tty_fd, KDSETMODE, KD_GRAPHICS);
-       if (ret)
-               fprintf(stderr, "failed to set KD_GRAPHICS mode on console: %m\n");
-       ec->vt_active = 1;
-
-       wl_list_for_each(output, &ec->base.output_list, base.link) {
-               ret = drmModeSetCrtc(ec->base.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);
+       for (i = 0; i < 2; i++) {
+               ec->base.destroy_image(ec->base.display, output->image[i]);
+               drmModeRmFB(ec->drm.fd, output->fb_id[i]);
        }
-}
+       
+       ec->crtc_allocator &= ~(1 << output->crtc_id);
+       ec->connector_allocator &= ~(1 << output->connector_id);
 
-static void on_leave_vt(int signal_number, void *data)
-{
-       struct drm_compositor *ec = data;
-       int ret;
+       wlsc_output_destroy(&output->base);
+       wl_list_remove(&output->base.link);
 
-       ret = drmDropMaster(ec->base.drm.fd);
-       if (ret) {
-               fprintf(stderr, "failed to drop drm master\n");
-               kill(0, SIGTERM);
-               return;
-       }
+       free(output);
 
-       ioctl (ec->tty_fd, VT_RELDISP, 1);
-       ret = ioctl(ec->tty_fd, KDSETMODE, KD_TEXT);
-       if (ret)
-               fprintf(stderr, "failed to set KD_TEXT mode on console: %m\n");
-       ec->vt_active = 0;
+       return 0;
 }
 
 static void
-on_tty_input(int fd, uint32_t mask, void *data)
+update_outputs(struct drm_compositor *ec)
 {
-       struct drm_compositor *ec = data;
+       drmModeConnector *connector;
+       drmModeRes *resources;
+       struct drm_output *output, *next;
+       int x = 0, y = 0;
+       int x_offset = 0, y_offset = 0;
+       uint32_t connected = 0, disconnects = 0;
+       int i;
 
-       /* Ignore input to tty.  We get keyboard events from evdev
-        */
-       tcflush(ec->tty_fd, TCIFLUSH);
-}
+       resources = drmModeGetResources(ec->drm.fd);
+       if (!resources) {
+               fprintf(stderr, "drmModeGetResources failed\n");
+               return;
+       }
 
-static int setup_tty(struct drm_compositor *ec, struct wl_event_loop *loop)
-{
-       struct termios raw_attributes;
-       struct vt_mode mode = { 0 };
-       int ret;
+       /* collect new connects */
+       for (i = 0; i < resources->count_connectors; i++) {
+               connector =
+                       drmModeGetConnector(ec->drm.fd,
+                                           resources->connectors[i]);
+               if (connector == NULL ||
+                   connector->connection != DRM_MODE_CONNECTED)
+                       continue;
 
-       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;
+               connected |= (1 << connector->connector_id);
+               
+               if (!(ec->connector_allocator & (1 << connector->connector_id))) {
+                       struct wlsc_output *last_output =
+                               container_of(ec->base.output_list.prev,
+                                            struct wlsc_output, link);
+
+                       /* XXX: not yet needed, we die with 0 outputs */
+                       if (!wl_list_empty(&ec->base.output_list))
+                               x = last_output->x + last_output->current->width;
+                       else
+                               x = 0;
+                       y = 0;
+                       create_output_for_connector(ec, resources,
+                                                   connector, x, y);
+                       printf("connector %d connected\n",
+                              connector->connector_id);
+                               
+               }
+               drmModeFreeConnector(connector);
        }
+       drmModeFreeResources(resources);
 
-       if (tcgetattr(ec->tty_fd, &ec->terminal_attributes) < 0) {
-               fprintf(stderr, "could not get terminal attributes: %m\n");
-               return -1;
+       disconnects = ec->connector_allocator & ~connected;
+       if (disconnects) {
+               wl_list_for_each_safe(output, next, &ec->base.output_list,
+                                     base.link) {
+                       if (x_offset != 0 || y_offset != 0) {
+                               wlsc_output_move(&output->base,
+                                                output->base.x - x_offset,
+                                                output->base.y - y_offset);
+                       }
+
+                       if (disconnects & (1 << output->connector_id)) {
+                               disconnects &= ~(1 << output->connector_id);
+                               printf("connector %d disconnected\n",
+                                      output->connector_id);
+                               x_offset += output->base.current->width;
+                               destroy_output(output);
+                       }
+               }
        }
 
-       /* Ignore control characters and disable echo */
-       raw_attributes = ec->terminal_attributes;
-       cfmakeraw(&raw_attributes);
+       /* FIXME: handle zero outputs, without terminating */   
+       if (ec->connector_allocator == 0)
+               wl_display_terminate(ec->base.wl_display);
+}
 
-       /* Fix up line endings to be normal (cfmakeraw hoses them) */
-       raw_attributes.c_oflag |= OPOST | OCRNL;
+static int
+udev_event_is_hotplug(struct udev_device *device)
+{
+       struct udev_list_entry *list, *hotplug_entry;
+       
+       list = udev_device_get_properties_list_entry(device);
 
-       if (tcsetattr(ec->tty_fd, TCSANOW, &raw_attributes) < 0)
-               fprintf(stderr, "could not put terminal into raw mode: %m\n");
+       hotplug_entry = udev_list_entry_get_by_name(list, "HOTPLUG");
+       if (hotplug_entry == NULL)
+               return 0;
 
-       ec->tty_input_source =
-               wl_event_loop_add_fd(loop, ec->tty_fd,
-                                    WL_EVENT_READABLE, on_tty_input, ec);
+       return strcmp(udev_list_entry_get_value(hotplug_entry), "1") == 0;
+}
 
-       ret = ioctl(ec->tty_fd, KDSETMODE, KD_GRAPHICS);
-       if (ret)
-               fprintf(stderr, "failed to set KD_GRAPHICS mode on tty: %m\n");
+static int
+udev_drm_event(int fd, uint32_t mask, void *data)
+{
+       struct drm_compositor *ec = data;
+       struct udev_device *event;
 
-       ec->vt_active = 1;
-       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");
-       }
+       event = udev_monitor_receive_device(ec->udev_monitor);
+       
+       if (udev_event_is_hotplug(event))
+               update_outputs(ec);
 
-       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);
+       udev_device_unref(event);
 
-       return 0;
+       return 1;
 }
 
-static int
-drm_authenticate(struct wlsc_compositor *c, uint32_t id)
+static EGLImageKHR
+drm_compositor_create_cursor_image(struct wlsc_compositor *ec,
+                                  int32_t width, int32_t height)
 {
-       struct drm_compositor *ec = (struct drm_compositor *) c;
+       struct drm_compositor *c = (struct drm_compositor *) ec;
+       struct gbm_bo *bo;
+       EGLImageKHR image;
+       uint32_t *pixels;
+       GLuint tex;
+
+       if (width > 64 || height > 64)
+               return EGL_NO_IMAGE_KHR;
+
+       bo = gbm_bo_create(c->gbm,
+                          /* width, height, */ 64, 64,
+                          GBM_BO_FORMAT_ARGB8888,
+                          GBM_BO_USE_CURSOR_64X64 | GBM_BO_USE_RENDERING);
+
+       image = ec->create_image(c->base.display, NULL,
+                                EGL_NATIVE_PIXMAP_KHR, bo, NULL);
+       gbm_bo_destroy(bo);
+
+       /* If the requested size is smaller than the allocated one, make the
+        * whole image transparent. */
+       if (width != 64 || height != 64) {
+               pixels = calloc(64 * 64, sizeof *pixels);
+
+               glGenTextures(1, &tex);
+               glBindTexture(GL_TEXTURE_2D, tex);
+               glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+               glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+               glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+               glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+               c->base.image_target_texture_2d(GL_TEXTURE_2D, image);
+               glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 64, 64,
+                               GL_BGRA_EXT, GL_UNSIGNED_BYTE, pixels);
+
+               glDeleteTextures(1, &tex);
+               free(pixels);
+       }
 
-       return drmAuthMagic(ec->base.drm.fd, id);
+       return image;
 }
 
 static void
@@ -623,21 +724,47 @@ drm_destroy(struct wlsc_compositor *ec)
 {
        struct drm_compositor *d = (struct drm_compositor *) ec;
 
-       if (tcsetattr(d->tty_fd, TCSANOW, &d->terminal_attributes) < 0)
-               fprintf(stderr,
-                       "could not restore terminal to canonical mode\n");
+       tty_destroy(d->tty);
 
-       free(ec);
+       free(d);
 }
 
-struct wlsc_compositor *
-drm_compositor_create(struct wl_display *display, int connector)
+static void
+vt_func(struct wlsc_compositor *compositor, int event)
+{
+       struct drm_compositor *ec = (struct drm_compositor *) compositor;
+       struct wlsc_output *output;
+
+       switch (event) {
+       case TTY_ENTER_VT:
+               compositor->focus = 1;
+               drmSetMaster(ec->drm.fd);
+               compositor->state = WLSC_COMPOSITOR_ACTIVE;
+               wlsc_compositor_damage_all(compositor);
+               break;
+       case TTY_LEAVE_VT:
+               compositor->focus = 0;
+               compositor->state = WLSC_COMPOSITOR_SLEEPING;
+               drmDropMaster(ec->drm.fd);
+
+               wl_list_for_each(output, &ec->base.output_list, link)
+                       drm_output_set_cursor(output, NULL);
+
+               break;
+       };
+}
+
+static const char default_seat[] = "seat0";
+
+static struct wlsc_compositor *
+drm_compositor_create(struct wl_display *display,
+                     int connector, const char *seat)
 {
        struct drm_compositor *ec;
        struct udev_enumerate *e;
         struct udev_list_entry *entry;
-       struct udev_device *device;
-       const char *path;
+       struct udev_device *device, *drm_device;
+       const char *path, *device_seat;
        struct wl_event_loop *loop;
 
        ec = malloc(sizeof *ec);
@@ -653,27 +780,46 @@ drm_compositor_create(struct wl_display *display, int connector)
 
        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);
-       device = NULL;
+       drm_device = NULL;
         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);
-               break;
+                device_seat =
+                       udev_device_get_property_value(device, "ID_SEAT");
+               if (!device_seat)
+                       device_seat = default_seat;
+               if (strcmp(device_seat, seat) == 0) {
+                       drm_device = device;
+                       break;
+               }
+               udev_device_unref(device);
        }
+
         udev_enumerate_unref(e);
 
-       if (device == NULL) {
+       if (drm_device == NULL) {
                fprintf(stderr, "no drm device found\n");
                return NULL;
        }
 
        ec->base.wl_display = display;
-       if (init_egl(ec, device) < 0) {
+       if (init_egl(ec, drm_device) < 0) {
                fprintf(stderr, "failed to initialize egl\n");
                return NULL;
        }
-       
+
+       udev_device_unref(drm_device);
+
+       ec->base.destroy = drm_destroy;
+       ec->base.create_cursor_image = drm_compositor_create_cursor_image;
+
+       ec->base.focus = 1;
+
+       glGenFramebuffers(1, &ec->base.fbo);
+       glBindFramebuffer(GL_FRAMEBUFFER, ec->base.fbo);
+
        /* Can't init base class until we have a current egl context */
        if (wlsc_compositor_init(&ec->base, display) < 0)
                return NULL;
@@ -683,17 +829,57 @@ drm_compositor_create(struct wl_display *display, int connector)
                return NULL;
        }
 
-       drm_input_create(ec);
+       evdev_input_add_devices(&ec->base, ec->udev, seat);
 
        loop = wl_display_get_event_loop(ec->base.wl_display);
        ec->drm_source =
-               wl_event_loop_add_fd(loop, ec->base.drm.fd,
+               wl_event_loop_add_fd(loop, ec->drm.fd,
                                     WL_EVENT_READABLE, on_drm_input, ec);
-       setup_tty(ec, loop);
-       ec->base.destroy = drm_destroy;
-       ec->base.authenticate = drm_authenticate;
-       ec->base.present = drm_compositor_present;
-       ec->base.focus = 1;
+       ec->tty = tty_create(&ec->base, vt_func);
+
+       ec->udev_monitor = udev_monitor_new_from_netlink(ec->udev, "udev");
+       if (ec->udev_monitor == NULL) {
+               fprintf(stderr, "failed to intialize udev monitor\n");
+               return NULL;
+       }
+       udev_monitor_filter_add_match_subsystem_devtype(ec->udev_monitor,
+                                                       "drm", NULL);
+       ec->udev_drm_source =
+               wl_event_loop_add_fd(loop, udev_monitor_get_fd(ec->udev_monitor),
+                                    WL_EVENT_READABLE, udev_drm_event, ec);
+
+       if (udev_monitor_enable_receiving(ec->udev_monitor) < 0) {
+               fprintf(stderr, "failed to enable udev-monitor receiving\n");
+               return NULL;
+       }
 
        return &ec->base;
 }
+
+struct wlsc_compositor *
+backend_init(struct wl_display *display, char *options);
+
+WL_EXPORT struct wlsc_compositor *
+backend_init(struct wl_display *display, char *options)
+{
+       int connector = 0, i;
+       const char *seat;
+       char *p, *value;
+
+       static char * const tokens[] = { "connector", "seat", NULL };
+       
+       p = options;
+       seat = default_seat;
+       while (i = getsubopt(&p, tokens, &value), i != -1) {
+               switch (i) {
+               case 0:
+                       connector = strtol(value, NULL, 0);
+                       break;
+               case 1:
+                       seat = value;
+                       break;
+               }
+       }
+
+       return drm_compositor_create(display, connector, seat);
+}