2 * Copyright © 2008-2010 Kristian Høgsberg
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software Foundation,
16 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
28 #include <xf86drmMode.h>
32 #include "compositor.h"
34 struct drm_compositor {
35 struct wlsc_compositor base;
38 struct wl_event_source *drm_source;
40 struct udev_monitor *udev_monitor;
41 struct wl_event_source *udev_drm_source;
46 struct gbm_device *gbm;
47 uint32_t crtc_allocator;
48 uint32_t connector_allocator;
53 struct wlsc_mode base;
54 drmModeModeInfo mode_info;
58 struct wlsc_output base;
61 uint32_t connector_id;
68 struct wlsc_surface *scanout_surface;
70 uint32_t fs_surf_fb_id;
71 uint32_t pending_fs_surf_fb_id;
75 drm_output_prepare_render(struct wlsc_output *output_base)
77 struct drm_output *output = (struct drm_output *) output_base;
79 glFramebufferRenderbuffer(GL_FRAMEBUFFER,
82 output->rbo[output->current]);
84 if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
91 drm_output_present(struct wlsc_output *output_base)
93 struct drm_output *output = (struct drm_output *) output_base;
94 struct drm_compositor *c =
95 (struct drm_compositor *) output->base.compositor;
98 if (drm_output_prepare_render(&output->base))
102 output->current ^= 1;
104 if (output->scanout_surface != NULL) {
105 output->scanout_surface = NULL;
106 fb_id = output->fs_surf_fb_id;
108 fb_id = output->fb_id[output->current ^ 1];
111 drmModePageFlip(c->drm.fd, output->crtc_id,
113 DRM_MODE_PAGE_FLIP_EVENT, output);
119 page_flip_handler(int fd, unsigned int frame,
120 unsigned int sec, unsigned int usec, void *data)
122 struct drm_output *output = (struct drm_output *) data;
123 struct drm_compositor *c =
124 (struct drm_compositor *) output->base.compositor;
127 if (output->pending_fs_surf_fb_id) {
128 drmModeRmFB(c->drm.fd, output->pending_fs_surf_fb_id);
129 output->pending_fs_surf_fb_id = 0;
132 if (output->fs_surf_fb_id) {
133 output->pending_fs_surf_fb_id = output->fs_surf_fb_id;
134 output->fs_surf_fb_id = 0;
137 msecs = sec * 1000 + usec / 1000;
138 wlsc_output_finish_frame(&output->base, msecs);
142 drm_output_prepare_scanout_surface(struct wlsc_output *output_base,
143 struct wlsc_surface *es)
145 struct drm_output *output = (struct drm_output *) output_base;
146 struct drm_compositor *c =
147 (struct drm_compositor *) output->base.compositor;
148 EGLint handle, stride;
153 if (es->x != output->base.x ||
154 es->y != output->base.y ||
155 es->width != output->base.current->width ||
156 es->height != output->base.current->height ||
157 es->image == EGL_NO_IMAGE_KHR)
160 bo = gbm_bo_create_from_egl_image(c->gbm,
161 c->base.display, es->image,
162 es->width, es->height,
165 handle = gbm_bo_get_handle(bo).s32;
166 stride = gbm_bo_get_pitch(bo);
173 ret = drmModeAddFB(c->drm.fd,
174 output->base.current->width,
175 output->base.current->height,
176 32, 32, stride, handle, &fb_id);
181 output->fs_surf_fb_id = fb_id;
182 output->scanout_surface = es;
188 drm_output_set_cursor(struct wlsc_output *output_base,
189 struct wlsc_input_device *eid)
191 struct drm_output *output = (struct drm_output *) output_base;
192 struct drm_compositor *c =
193 (struct drm_compositor *) output->base.compositor;
194 EGLint handle, stride;
196 pixman_region32_t cursor_region;
200 drmModeSetCursor(c->drm.fd, output->crtc_id, 0, 0, 0);
204 pixman_region32_init_rect(&cursor_region,
205 eid->sprite->x, eid->sprite->y,
206 eid->sprite->width, eid->sprite->height);
208 pixman_region32_intersect_rect(&cursor_region, &cursor_region,
209 output->base.x, output->base.y,
210 output->base.current->width,
211 output->base.current->height);
213 if (!pixman_region32_not_empty(&cursor_region)) {
218 if (eid->sprite->image == EGL_NO_IMAGE_KHR)
221 if (eid->sprite->width > 64 || eid->sprite->height > 64)
224 bo = gbm_bo_create_from_egl_image(c->gbm,
226 eid->sprite->image, 64, 64,
227 GBM_BO_USE_CURSOR_64X64);
229 handle = gbm_bo_get_handle(bo).s32;
230 stride = gbm_bo_get_pitch(bo);
234 if (stride != 64 * 4) {
235 fprintf(stderr, "info: cursor stride is != 64\n");
239 ret = drmModeSetCursor(c->drm.fd, output->crtc_id, handle, 64, 64);
241 fprintf(stderr, "failed to set cursor: %s\n", strerror(-ret));
245 ret = drmModeMoveCursor(c->drm.fd, output->crtc_id,
246 eid->sprite->x - output->base.x,
247 eid->sprite->y - output->base.y);
249 fprintf(stderr, "failed to move cursor: %s\n", strerror(-ret));
253 printf("info: set hardware cursor\n");
256 pixman_region32_fini(&cursor_region);
258 drmModeSetCursor(c->drm.fd, output->crtc_id, 0, 0, 0);
263 on_drm_input(int fd, uint32_t mask, void *data)
265 drmEventContext evctx;
267 memset(&evctx, 0, sizeof evctx);
268 evctx.version = DRM_EVENT_CONTEXT_VERSION;
269 evctx.page_flip_handler = page_flip_handler;
270 drmHandleEvent(fd, &evctx);
276 init_egl(struct drm_compositor *ec, struct udev_device *device)
279 const char *extensions, *filename;
281 static const EGLint context_attribs[] = {
282 EGL_CONTEXT_CLIENT_VERSION, 2,
286 filename = udev_device_get_devnode(device);
287 fd = open(filename, O_RDWR, O_CLOEXEC);
289 /* Probably permissions error */
290 fprintf(stderr, "couldn't open %s, skipping\n",
291 udev_device_get_devnode(device));
295 setenv("EGL_PLATFORM", "drm", 1);
297 ec->gbm = gbm_create_device(ec->drm.fd);
298 ec->base.display = eglGetDisplay(ec->gbm);
299 if (ec->base.display == NULL) {
300 fprintf(stderr, "failed to create display\n");
304 if (!eglInitialize(ec->base.display, &major, &minor)) {
305 fprintf(stderr, "failed to initialize display\n");
309 extensions = eglQueryString(ec->base.display, EGL_EXTENSIONS);
310 if (!strstr(extensions, "EGL_KHR_surfaceless_opengl")) {
311 fprintf(stderr, "EGL_KHR_surfaceless_opengl not available\n");
315 if (!eglBindAPI(EGL_OPENGL_ES_API)) {
316 fprintf(stderr, "failed to bind api EGL_OPENGL_ES_API\n");
320 ec->base.context = eglCreateContext(ec->base.display, NULL,
321 EGL_NO_CONTEXT, context_attribs);
322 if (ec->base.context == NULL) {
323 fprintf(stderr, "failed to create context\n");
327 if (!eglMakeCurrent(ec->base.display, EGL_NO_SURFACE,
328 EGL_NO_SURFACE, ec->base.context)) {
329 fprintf(stderr, "failed to make context current\n");
336 static drmModeModeInfo builtin_1024x768 = {
338 1024, 1072, 1176, 1328, 0,
339 768, 771, 775, 798, 0,
341 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC,
348 drm_output_add_mode(struct drm_output *output, drmModeModeInfo *info)
350 struct drm_mode *mode;
352 mode = malloc(sizeof *mode);
356 mode->base.flags = 0;
357 mode->base.width = info->hdisplay;
358 mode->base.height = info->vdisplay;
359 mode->base.refresh = info->vrefresh;
360 mode->mode_info = *info;
361 wl_list_insert(output->base.mode_list.prev, &mode->base.link);
367 drm_subpixel_to_wayland(int drm_value)
371 case DRM_MODE_SUBPIXEL_UNKNOWN:
372 return WL_OUTPUT_SUBPIXEL_UNKNOWN;
373 case DRM_MODE_SUBPIXEL_NONE:
374 return WL_OUTPUT_SUBPIXEL_NONE;
375 case DRM_MODE_SUBPIXEL_HORIZONTAL_RGB:
376 return WL_OUTPUT_SUBPIXEL_HORIZONTAL_RGB;
377 case DRM_MODE_SUBPIXEL_HORIZONTAL_BGR:
378 return WL_OUTPUT_SUBPIXEL_HORIZONTAL_BGR;
379 case DRM_MODE_SUBPIXEL_VERTICAL_RGB:
380 return WL_OUTPUT_SUBPIXEL_VERTICAL_RGB;
381 case DRM_MODE_SUBPIXEL_VERTICAL_BGR:
382 return WL_OUTPUT_SUBPIXEL_VERTICAL_BGR;
387 create_output_for_connector(struct drm_compositor *ec,
388 drmModeRes *resources,
389 drmModeConnector *connector,
392 struct drm_output *output;
393 struct drm_mode *drm_mode;
394 drmModeEncoder *encoder;
396 unsigned handle, stride;
398 encoder = drmModeGetEncoder(ec->drm.fd, connector->encoders[0]);
399 if (encoder == NULL) {
400 fprintf(stderr, "No encoder for connector.\n");
404 for (i = 0; i < resources->count_crtcs; i++) {
405 if (encoder->possible_crtcs & (1 << i) &&
406 !(ec->crtc_allocator & (1 << resources->crtcs[i])))
409 if (i == resources->count_crtcs) {
410 fprintf(stderr, "No usable crtc for encoder.\n");
414 output = malloc(sizeof *output);
418 memset(output, 0, sizeof *output);
419 output->base.subpixel = drm_subpixel_to_wayland(connector->subpixel);
420 output->base.make = "unknown";
421 output->base.model = "unknown";
422 wl_list_init(&output->base.mode_list);
424 output->crtc_id = resources->crtcs[i];
425 ec->crtc_allocator |= (1 << output->crtc_id);
426 output->connector_id = connector->connector_id;
427 ec->connector_allocator |= (1 << output->connector_id);
429 for (i = 0; i < connector->count_modes; i++)
430 drm_output_add_mode(output, &connector->modes[i]);
431 if (connector->count_modes == 0)
432 drm_output_add_mode(output, &builtin_1024x768);
434 drm_mode = container_of(output->base.mode_list.next,
435 struct drm_mode, base.link);
436 output->base.current = &drm_mode->base;
437 drm_mode->base.flags =
438 WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
440 wlsc_output_init(&output->base, &ec->base, x, y,
441 connector->mmWidth, connector->mmHeight, 0);
443 wl_list_insert(ec->base.output_list.prev, &output->base.link);
445 drmModeFreeEncoder(encoder);
447 glGenRenderbuffers(2, output->rbo);
448 for (i = 0; i < 2; i++) {
449 glBindRenderbuffer(GL_RENDERBUFFER, output->rbo[i]);
452 gbm_bo_create(ec->gbm,
453 output->base.current->width,
454 output->base.current->height,
455 GBM_BO_FORMAT_XRGB8888,
456 GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING);
457 output->image[i] = ec->base.create_image(ec->base.display,
459 EGL_NATIVE_PIXMAP_KHR,
460 output->bo[i], NULL);
463 ec->base.image_target_renderbuffer_storage(GL_RENDERBUFFER,
465 stride = gbm_bo_get_pitch(output->bo[i]);
466 handle = gbm_bo_get_handle(output->bo[i]).u32;
468 ret = drmModeAddFB(ec->drm.fd,
469 output->base.current->width,
470 output->base.current->height,
471 32, 32, stride, handle, &output->fb_id[i]);
473 fprintf(stderr, "failed to add fb %d: %m\n", i);
479 glFramebufferRenderbuffer(GL_FRAMEBUFFER,
480 GL_COLOR_ATTACHMENT0,
482 output->rbo[output->current]);
483 ret = drmModeSetCrtc(ec->drm.fd, output->crtc_id,
484 output->fb_id[output->current ^ 1], 0, 0,
485 &output->connector_id, 1,
486 &drm_mode->mode_info);
488 fprintf(stderr, "failed to set mode: %m\n");
492 output->scanout_surface = NULL;
493 output->base.prepare_render = drm_output_prepare_render;
494 output->base.present = drm_output_present;
495 output->base.prepare_scanout_surface =
496 drm_output_prepare_scanout_surface;
497 output->base.set_hardware_cursor = drm_output_set_cursor;
503 create_outputs(struct drm_compositor *ec, int option_connector)
505 drmModeConnector *connector;
506 drmModeRes *resources;
510 resources = drmModeGetResources(ec->drm.fd);
512 fprintf(stderr, "drmModeGetResources failed\n");
516 for (i = 0; i < resources->count_connectors; i++) {
517 connector = drmModeGetConnector(ec->drm.fd, resources->connectors[i]);
518 if (connector == NULL)
521 if (connector->connection == DRM_MODE_CONNECTED &&
522 (option_connector == 0 ||
523 connector->connector_id == option_connector))
524 if (create_output_for_connector(ec, resources,
525 connector, x, y) < 0)
528 x += container_of(ec->base.output_list.prev, struct wlsc_output,
529 link)->current->width;
531 drmModeFreeConnector(connector);
534 if (wl_list_empty(&ec->base.output_list)) {
535 fprintf(stderr, "No currently active connector found.\n");
539 drmModeFreeResources(resources);
545 destroy_output(struct drm_output *output)
547 struct drm_compositor *ec =
548 (struct drm_compositor *) output->base.compositor;
551 glFramebufferRenderbuffer(GL_FRAMEBUFFER,
552 GL_COLOR_ATTACHMENT0,
556 glBindRenderbuffer(GL_RENDERBUFFER, 0);
557 glDeleteRenderbuffers(2, output->rbo);
559 for (i = 0; i < 2; i++) {
560 ec->base.destroy_image(ec->base.display, output->image[i]);
561 drmModeRmFB(ec->drm.fd, output->fb_id[i]);
564 ec->crtc_allocator &= ~(1 << output->crtc_id);
565 ec->connector_allocator &= ~(1 << output->connector_id);
567 wlsc_output_destroy(&output->base);
568 wl_list_remove(&output->base.link);
576 update_outputs(struct drm_compositor *ec)
578 drmModeConnector *connector;
579 drmModeRes *resources;
580 struct drm_output *output, *next;
582 int x_offset = 0, y_offset = 0;
583 uint32_t connected = 0, disconnects = 0;
586 resources = drmModeGetResources(ec->drm.fd);
588 fprintf(stderr, "drmModeGetResources failed\n");
592 /* collect new connects */
593 for (i = 0; i < resources->count_connectors; i++) {
595 drmModeGetConnector(ec->drm.fd,
596 resources->connectors[i]);
597 if (connector == NULL ||
598 connector->connection != DRM_MODE_CONNECTED)
601 connected |= (1 << connector->connector_id);
603 if (!(ec->connector_allocator & (1 << connector->connector_id))) {
604 struct wlsc_output *last_output =
605 container_of(ec->base.output_list.prev,
606 struct wlsc_output, link);
608 /* XXX: not yet needed, we die with 0 outputs */
609 if (!wl_list_empty(&ec->base.output_list))
610 x = last_output->x + last_output->current->width;
614 create_output_for_connector(ec, resources,
616 printf("connector %d connected\n",
617 connector->connector_id);
620 drmModeFreeConnector(connector);
622 drmModeFreeResources(resources);
624 disconnects = ec->connector_allocator & ~connected;
626 wl_list_for_each_safe(output, next, &ec->base.output_list,
628 if (x_offset != 0 || y_offset != 0) {
629 wlsc_output_move(&output->base,
630 output->base.x - x_offset,
631 output->base.y - y_offset);
634 if (disconnects & (1 << output->connector_id)) {
635 disconnects &= ~(1 << output->connector_id);
636 printf("connector %d disconnected\n",
637 output->connector_id);
638 x_offset += output->base.current->width;
639 destroy_output(output);
644 /* FIXME: handle zero outputs, without terminating */
645 if (ec->connector_allocator == 0)
646 wl_display_terminate(ec->base.wl_display);
650 udev_event_is_hotplug(struct udev_device *device)
652 struct udev_list_entry *list, *hotplug_entry;
654 list = udev_device_get_properties_list_entry(device);
656 hotplug_entry = udev_list_entry_get_by_name(list, "HOTPLUG");
657 if (hotplug_entry == NULL)
660 return strcmp(udev_list_entry_get_value(hotplug_entry), "1") == 0;
664 udev_drm_event(int fd, uint32_t mask, void *data)
666 struct drm_compositor *ec = data;
667 struct udev_device *event;
669 event = udev_monitor_receive_device(ec->udev_monitor);
671 if (udev_event_is_hotplug(event))
674 udev_device_unref(event);
680 drm_compositor_create_cursor_image(struct wlsc_compositor *ec,
681 int32_t width, int32_t height)
683 struct drm_compositor *c = (struct drm_compositor *) ec;
687 if (width > 64 || height > 64)
688 return EGL_NO_IMAGE_KHR;
690 bo = gbm_bo_create(c->gbm,
691 /* width, height, */ 64, 64,
692 GBM_BO_FORMAT_ARGB8888,
693 GBM_BO_USE_CURSOR_64X64 | GBM_BO_USE_RENDERING);
695 image = ec->create_image(c->base.display, NULL,
696 EGL_NATIVE_PIXMAP_KHR, bo, NULL);
703 drm_destroy(struct wlsc_compositor *ec)
705 struct drm_compositor *d = (struct drm_compositor *) ec;
713 vt_func(struct wlsc_compositor *compositor, int event)
715 struct drm_compositor *ec = (struct drm_compositor *) compositor;
716 struct wlsc_output *output;
720 compositor->focus = 1;
721 drmSetMaster(ec->drm.fd);
722 compositor->state = WLSC_COMPOSITOR_ACTIVE;
723 wlsc_compositor_damage_all(compositor);
726 compositor->focus = 0;
727 compositor->state = WLSC_COMPOSITOR_SLEEPING;
728 drmDropMaster(ec->drm.fd);
730 wl_list_for_each(output, &ec->base.output_list, link)
731 drm_output_set_cursor(output, NULL);
737 static struct wlsc_compositor *
738 drm_compositor_create(struct wl_display *display, int connector)
740 struct drm_compositor *ec;
741 struct udev_enumerate *e;
742 struct udev_list_entry *entry;
743 struct udev_device *device;
745 struct wl_event_loop *loop;
747 ec = malloc(sizeof *ec);
751 memset(ec, 0, sizeof *ec);
752 ec->udev = udev_new();
753 if (ec->udev == NULL) {
754 fprintf(stderr, "failed to initialize udev context\n");
758 e = udev_enumerate_new(ec->udev);
759 udev_enumerate_add_match_subsystem(e, "drm");
760 udev_enumerate_add_match_property(e, "WAYLAND_SEAT", "1");
761 udev_enumerate_scan_devices(e);
763 udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
764 path = udev_list_entry_get_name(entry);
765 device = udev_device_new_from_syspath(ec->udev, path);
768 udev_enumerate_unref(e);
770 if (device == NULL) {
771 fprintf(stderr, "no drm device found\n");
775 ec->base.wl_display = display;
776 if (init_egl(ec, device) < 0) {
777 fprintf(stderr, "failed to initialize egl\n");
781 ec->base.destroy = drm_destroy;
782 ec->base.create_cursor_image = drm_compositor_create_cursor_image;
786 glGenFramebuffers(1, &ec->base.fbo);
787 glBindFramebuffer(GL_FRAMEBUFFER, ec->base.fbo);
789 /* Can't init base class until we have a current egl context */
790 if (wlsc_compositor_init(&ec->base, display) < 0)
793 if (create_outputs(ec, connector) < 0) {
794 fprintf(stderr, "failed to create output for %s\n", path);
798 evdev_input_add_devices(&ec->base, ec->udev);
800 loop = wl_display_get_event_loop(ec->base.wl_display);
802 wl_event_loop_add_fd(loop, ec->drm.fd,
803 WL_EVENT_READABLE, on_drm_input, ec);
804 ec->tty = tty_create(&ec->base, vt_func);
806 ec->udev_monitor = udev_monitor_new_from_netlink(ec->udev, "udev");
807 if (ec->udev_monitor == NULL) {
808 fprintf(stderr, "failed to intialize udev monitor\n");
811 udev_monitor_filter_add_match_subsystem_devtype(ec->udev_monitor,
813 ec->udev_drm_source =
814 wl_event_loop_add_fd(loop, udev_monitor_get_fd(ec->udev_monitor),
815 WL_EVENT_READABLE, udev_drm_event, ec);
817 if (udev_monitor_enable_receiving(ec->udev_monitor) < 0) {
818 fprintf(stderr, "failed to enable udev-monitor receiving\n");
825 struct wlsc_compositor *
826 backend_init(struct wl_display *display, char *options);
828 WL_EXPORT struct wlsc_compositor *
829 backend_init(struct wl_display *display, char *options)
831 int connector = 0, i;
834 static char * const tokens[] = { "connector", NULL };
837 while (i = getsubopt(&p, tokens, &value), i != -1) {
840 connector = strtol(value, NULL, 0);
845 return drm_compositor_create(display, connector);