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>
30 #define GL_GLEXT_PROTOTYPES
31 #define EGL_EGLEXT_PROTOTYPES
32 #include <GLES2/gl2.h>
33 #include <GLES2/gl2ext.h>
35 #include <EGL/eglext.h>
37 #include "compositor.h"
39 struct drm_compositor {
40 struct wlsc_compositor base;
43 struct wl_event_source *drm_source;
45 struct udev_monitor *udev_monitor;
46 struct wl_event_source *udev_drm_source;
51 uint32_t crtc_allocator;
52 uint32_t connector_allocator;
57 struct wlsc_output base;
61 uint32_t connector_id;
67 struct wlsc_surface *scanout_surface;
69 uint32_t fs_surf_fb_id;
70 uint32_t pending_fs_surf_fb_id;
74 drm_output_prepare_render(struct wlsc_output *output_base)
76 struct drm_output *output = (struct drm_output *) output_base;
78 glFramebufferRenderbuffer(GL_FRAMEBUFFER,
81 output->rbo[output->current]);
83 if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
90 drm_output_present(struct wlsc_output *output_base)
92 struct drm_output *output = (struct drm_output *) output_base;
93 struct drm_compositor *c =
94 (struct drm_compositor *) output->base.compositor;
97 if (drm_output_prepare_render(&output->base))
101 output->current ^= 1;
103 if (output->scanout_surface != NULL) {
104 output->scanout_surface = NULL;
105 fb_id = output->fs_surf_fb_id;
107 fb_id = output->fb_id[output->current ^ 1];
110 drmModePageFlip(c->drm.fd, output->crtc_id,
112 DRM_MODE_PAGE_FLIP_EVENT, output);
118 page_flip_handler(int fd, unsigned int frame,
119 unsigned int sec, unsigned int usec, void *data)
121 struct drm_output *output = (struct drm_output *) data;
122 struct drm_compositor *c =
123 (struct drm_compositor *) output->base.compositor;
126 if (output->pending_fs_surf_fb_id) {
127 drmModeRmFB(c->drm.fd, output->pending_fs_surf_fb_id);
128 output->pending_fs_surf_fb_id = 0;
131 if (output->fs_surf_fb_id) {
132 output->pending_fs_surf_fb_id = output->fs_surf_fb_id;
133 output->fs_surf_fb_id = 0;
136 msecs = sec * 1000 + usec / 1000;
137 wlsc_output_finish_frame(&output->base, msecs);
141 drm_output_prepare_scanout_surface(struct wlsc_output *output_base,
142 struct wlsc_surface *es)
144 struct drm_output *output = (struct drm_output *) output_base;
145 struct drm_compositor *c =
146 (struct drm_compositor *) output->base.compositor;
147 EGLint handle, stride;
151 if (es->width != output->base.width ||
152 es->height != output->base.height ||
153 es->image == EGL_NO_IMAGE_KHR)
156 eglExportDRMImageMESA(c->base.display, es->image,
157 NULL, &handle, &stride);
162 ret = drmModeAddFB(c->drm.fd,
163 output->base.width, output->base.height,
164 32, 32, stride, handle, &fb_id);
169 output->fs_surf_fb_id = fb_id;
170 output->scanout_surface = es;
176 drm_output_set_cursor(struct wlsc_output *output_base,
177 struct wl_input_device *input)
179 struct drm_output *output = (struct drm_output *) output_base;
180 struct drm_compositor *c =
181 (struct drm_compositor *) output->base.compositor;
182 struct wlsc_input_device *eid = (struct wlsc_input_device *) input;
183 EGLint handle, stride;
185 pixman_region32_t cursor_region;
187 pixman_region32_init_rect(&cursor_region,
188 eid->sprite->x, eid->sprite->y,
189 eid->sprite->width, eid->sprite->height);
191 pixman_region32_intersect_rect(&cursor_region, &cursor_region,
192 output->base.x, output->base.y,
193 output->base.width, output->base.height);
195 if (!pixman_region32_not_empty(&cursor_region)) {
200 if (eid->sprite->image == EGL_NO_IMAGE_KHR)
203 if (eid->sprite->width > 64 || eid->sprite->height > 64)
206 eglExportDRMImageMESA(c->base.display, eid->sprite->image,
207 NULL, &handle, &stride);
209 if (stride != 64 * 4) {
210 fprintf(stderr, "info: cursor stride is != 64\n");
214 ret = drmModeSetCursor(c->drm.fd, output->crtc_id, handle, 64, 64);
216 fprintf(stderr, "failed to set cursor: %s\n", strerror(-ret));
220 ret = drmModeMoveCursor(c->drm.fd, output->crtc_id,
221 eid->sprite->x - output->base.x,
222 eid->sprite->y - output->base.y);
224 fprintf(stderr, "failed to move cursor: %s\n", strerror(-ret));
228 printf("info: set hardware cursor\n");
231 pixman_region32_fini(&cursor_region);
233 drmModeSetCursor(c->drm.fd, output->crtc_id, 0, 0, 0);
238 on_drm_input(int fd, uint32_t mask, void *data)
240 drmEventContext evctx;
242 memset(&evctx, 0, sizeof evctx);
243 evctx.version = DRM_EVENT_CONTEXT_VERSION;
244 evctx.page_flip_handler = page_flip_handler;
245 drmHandleEvent(fd, &evctx);
249 init_egl(struct drm_compositor *ec, struct udev_device *device)
252 const char *extensions, *filename;
254 static const EGLint context_attribs[] = {
255 EGL_CONTEXT_CLIENT_VERSION, 2,
259 filename = udev_device_get_devnode(device);
260 fd = open(filename, O_RDWR, O_CLOEXEC);
262 /* Probably permissions error */
263 fprintf(stderr, "couldn't open %s, skipping\n",
264 udev_device_get_devnode(device));
269 ec->base.display = eglGetDRMDisplayMESA(ec->drm.fd);
270 if (ec->base.display == NULL) {
271 fprintf(stderr, "failed to create display\n");
275 if (!eglInitialize(ec->base.display, &major, &minor)) {
276 fprintf(stderr, "failed to initialize display\n");
280 extensions = eglQueryString(ec->base.display, EGL_EXTENSIONS);
281 if (!strstr(extensions, "EGL_KHR_surfaceless_opengl")) {
282 fprintf(stderr, "EGL_KHR_surfaceless_opengl not available\n");
286 if (!eglBindAPI(EGL_OPENGL_ES_API)) {
287 fprintf(stderr, "failed to bind api EGL_OPENGL_ES_API\n");
291 ec->base.context = eglCreateContext(ec->base.display, NULL,
292 EGL_NO_CONTEXT, context_attribs);
293 if (ec->base.context == NULL) {
294 fprintf(stderr, "failed to create context\n");
298 if (!eglMakeCurrent(ec->base.display, EGL_NO_SURFACE,
299 EGL_NO_SURFACE, ec->base.context)) {
300 fprintf(stderr, "failed to make context current\n");
307 static drmModeModeInfo builtin_1024x768 = {
309 1024, 1072, 1176, 1328, 0,
310 768, 771, 775, 798, 0,
312 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC,
318 create_output_for_connector(struct drm_compositor *ec,
319 drmModeRes *resources,
320 drmModeConnector *connector,
323 struct drm_output *output;
324 drmModeEncoder *encoder;
325 drmModeModeInfo *mode;
327 EGLint handle, stride, attribs[] = {
330 EGL_DRM_BUFFER_FORMAT_MESA, EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
331 EGL_DRM_BUFFER_USE_MESA, EGL_DRM_BUFFER_USE_SCANOUT_MESA,
335 output = malloc(sizeof *output);
339 if (connector->count_modes > 0)
340 mode = &connector->modes[0];
342 mode = &builtin_1024x768;
344 encoder = drmModeGetEncoder(ec->drm.fd, connector->encoders[0]);
345 if (encoder == NULL) {
346 fprintf(stderr, "No encoder for connector.\n");
350 for (i = 0; i < resources->count_crtcs; i++) {
351 if (encoder->possible_crtcs & (1 << i) &&
352 !(ec->crtc_allocator & (1 << resources->crtcs[i])))
355 if (i == resources->count_crtcs) {
356 fprintf(stderr, "No usable crtc for encoder.\n");
360 memset(output, 0, sizeof *output);
361 wlsc_output_init(&output->base, &ec->base, x, y,
362 mode->hdisplay, mode->vdisplay, 0);
364 output->crtc_id = resources->crtcs[i];
365 ec->crtc_allocator |= (1 << output->crtc_id);
367 output->connector_id = connector->connector_id;
368 ec->connector_allocator |= (1 << output->connector_id);
369 output->mode = *mode;
371 drmModeFreeEncoder(encoder);
373 glGenRenderbuffers(2, output->rbo);
374 for (i = 0; i < 2; i++) {
375 glBindRenderbuffer(GL_RENDERBUFFER, output->rbo[i]);
377 attribs[1] = output->base.width;
378 attribs[3] = output->base.height;
380 eglCreateDRMImageMESA(ec->base.display, attribs);
381 glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER,
383 eglExportDRMImageMESA(ec->base.display, output->image[i],
384 NULL, &handle, &stride);
386 ret = drmModeAddFB(ec->drm.fd,
387 output->base.width, output->base.height,
388 32, 32, stride, handle, &output->fb_id[i]);
390 fprintf(stderr, "failed to add fb %d: %m\n", i);
396 glFramebufferRenderbuffer(GL_FRAMEBUFFER,
397 GL_COLOR_ATTACHMENT0,
399 output->rbo[output->current]);
400 ret = drmModeSetCrtc(ec->drm.fd, output->crtc_id,
401 output->fb_id[output->current ^ 1], 0, 0,
402 &output->connector_id, 1, &output->mode);
404 fprintf(stderr, "failed to set mode: %m\n");
408 output->scanout_surface = NULL;
409 output->base.prepare_render = drm_output_prepare_render;
410 output->base.present = drm_output_present;
411 output->base.prepare_scanout_surface =
412 drm_output_prepare_scanout_surface;
413 output->base.set_hardware_cursor = drm_output_set_cursor;
415 wl_list_insert(ec->base.output_list.prev, &output->base.link);
421 create_outputs(struct drm_compositor *ec, int option_connector)
423 drmModeConnector *connector;
424 drmModeRes *resources;
428 resources = drmModeGetResources(ec->drm.fd);
430 fprintf(stderr, "drmModeGetResources failed\n");
434 for (i = 0; i < resources->count_connectors; i++) {
435 connector = drmModeGetConnector(ec->drm.fd, resources->connectors[i]);
436 if (connector == NULL)
439 if (connector->connection == DRM_MODE_CONNECTED &&
440 (option_connector == 0 ||
441 connector->connector_id == option_connector))
442 if (create_output_for_connector(ec, resources,
443 connector, x, y) < 0)
446 x += container_of(ec->base.output_list.prev, struct wlsc_output,
449 drmModeFreeConnector(connector);
452 if (wl_list_empty(&ec->base.output_list)) {
453 fprintf(stderr, "No currently active connector found.\n");
457 drmModeFreeResources(resources);
463 destroy_output(struct drm_output *output)
465 struct drm_compositor *ec =
466 (struct drm_compositor *) output->base.compositor;
469 glFramebufferRenderbuffer(GL_FRAMEBUFFER,
470 GL_COLOR_ATTACHMENT0,
474 glBindRenderbuffer(GL_RENDERBUFFER, 0);
475 glDeleteRenderbuffers(2, output->rbo);
477 for (i = 0; i < 2; i++) {
478 eglDestroyImageKHR(ec->base.display, output->image[i]);
479 drmModeRmFB(ec->drm.fd, output->fb_id[i]);
482 ec->crtc_allocator &= ~(1 << output->crtc_id);
483 ec->connector_allocator &= ~(1 << output->connector_id);
485 wlsc_output_destroy(&output->base);
486 wl_list_remove(&output->base.link);
494 update_outputs(struct drm_compositor *ec)
496 drmModeConnector *connector;
497 drmModeRes *resources;
498 struct drm_output *output, *next;
500 int x_offset = 0, y_offset = 0;
501 uint32_t connected = 0, disconnects = 0;
504 resources = drmModeGetResources(ec->drm.fd);
506 fprintf(stderr, "drmModeGetResources failed\n");
510 /* collect new connects */
511 for (i = 0; i < resources->count_connectors; i++) {
513 drmModeGetConnector(ec->drm.fd,
514 resources->connectors[i]);
515 if (connector == NULL ||
516 connector->connection != DRM_MODE_CONNECTED)
519 connected |= (1 << connector->connector_id);
521 if (!(ec->connector_allocator & (1 << connector->connector_id))) {
522 struct wlsc_output *last_output =
523 container_of(ec->base.output_list.prev,
524 struct wlsc_output, link);
526 /* XXX: not yet needed, we die with 0 outputs */
527 if (!wl_list_empty(&ec->base.output_list))
528 x = last_output->x + last_output->width;
532 create_output_for_connector(ec, resources,
534 printf("connector %d connected\n",
535 connector->connector_id);
538 drmModeFreeConnector(connector);
540 drmModeFreeResources(resources);
542 disconnects = ec->connector_allocator & ~connected;
544 wl_list_for_each_safe(output, next, &ec->base.output_list,
546 if (x_offset != 0 || y_offset != 0) {
547 wlsc_output_move(&output->base,
548 output->base.x - x_offset,
549 output->base.y - y_offset);
552 if (disconnects & (1 << output->connector_id)) {
553 disconnects &= ~(1 << output->connector_id);
554 printf("connector %d disconnected\n",
555 output->connector_id);
556 x_offset += output->base.width;
557 destroy_output(output);
562 /* FIXME: handle zero outputs, without terminating */
563 if (ec->connector_allocator == 0)
564 wl_display_terminate(ec->base.wl_display);
568 udev_event_is_hotplug(struct udev_device *device)
570 struct udev_list_entry *list, *hotplug_entry;
572 list = udev_device_get_properties_list_entry(device);
574 hotplug_entry = udev_list_entry_get_by_name(list, "HOTPLUG");
575 if (hotplug_entry == NULL)
578 return strcmp(udev_list_entry_get_value(hotplug_entry), "1") == 0;
582 udev_drm_event(int fd, uint32_t mask, void *data)
584 struct drm_compositor *ec = data;
585 struct udev_device *event;
587 event = udev_monitor_receive_device(ec->udev_monitor);
589 if (udev_event_is_hotplug(event))
592 udev_device_unref(event);
596 drm_compositor_create_cursor_image(struct wlsc_compositor *ec,
597 int32_t width, int32_t height)
599 EGLint image_attribs[] = {
602 EGL_DRM_BUFFER_FORMAT_MESA, EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
607 EGLImageKHR tmp_image, image;
609 if (width > 64 || height > 64)
610 return EGL_NO_IMAGE_KHR;
612 image_attribs[1] = 64;
613 image_attribs[3] = 64;
614 image_attribs[6] = EGL_DRM_BUFFER_USE_MESA;
615 image_attribs[7] = EGL_DRM_BUFFER_USE_SCANOUT_MESA;
617 tmp_image = eglCreateDRMImageMESA(ec->display, image_attribs);
619 eglExportDRMImageMESA(ec->display, tmp_image, &name, NULL, &stride);
624 /* recreate image width stide 64 forced */
625 image_attribs[1] = width;
626 image_attribs[3] = height;
627 image_attribs[6] = EGL_DRM_BUFFER_STRIDE_MESA;
628 image_attribs[7] = 64;
630 image = eglCreateImageKHR(ec->display, EGL_NO_CONTEXT, EGL_DRM_BUFFER_MESA,
631 (EGLClientBuffer)(intptr_t) name, image_attribs);
632 eglExportDRMImageMESA(ec->display, image, &name, NULL, &stride);
634 eglDestroyImageKHR(ec->display, tmp_image);
640 drm_destroy(struct wlsc_compositor *ec)
642 struct drm_compositor *d = (struct drm_compositor *) ec;
649 struct wlsc_compositor *
650 drm_compositor_create(struct wl_display *display, int connector)
652 struct drm_compositor *ec;
653 struct udev_enumerate *e;
654 struct udev_list_entry *entry;
655 struct udev_device *device;
657 struct wl_event_loop *loop;
659 ec = malloc(sizeof *ec);
663 memset(ec, 0, sizeof *ec);
664 ec->udev = udev_new();
665 if (ec->udev == NULL) {
666 fprintf(stderr, "failed to initialize udev context\n");
670 e = udev_enumerate_new(ec->udev);
671 udev_enumerate_add_match_subsystem(e, "drm");
672 udev_enumerate_add_match_property(e, "WAYLAND_SEAT", "1");
673 udev_enumerate_scan_devices(e);
675 udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
676 path = udev_list_entry_get_name(entry);
677 device = udev_device_new_from_syspath(ec->udev, path);
680 udev_enumerate_unref(e);
682 if (device == NULL) {
683 fprintf(stderr, "no drm device found\n");
687 ec->base.wl_display = display;
688 if (init_egl(ec, device) < 0) {
689 fprintf(stderr, "failed to initialize egl\n");
693 ec->base.destroy = drm_destroy;
694 ec->base.create_cursor_image = drm_compositor_create_cursor_image;
698 glGenFramebuffers(1, &ec->base.fbo);
699 glBindFramebuffer(GL_FRAMEBUFFER, ec->base.fbo);
701 /* Can't init base class until we have a current egl context */
702 if (wlsc_compositor_init(&ec->base, display) < 0)
705 if (create_outputs(ec, connector) < 0) {
706 fprintf(stderr, "failed to create output for %s\n", path);
710 evdev_input_add_devices(&ec->base, ec->udev);
712 loop = wl_display_get_event_loop(ec->base.wl_display);
714 wl_event_loop_add_fd(loop, ec->drm.fd,
715 WL_EVENT_READABLE, on_drm_input, ec);
716 ec->tty = tty_create(&ec->base);
718 ec->udev_monitor = udev_monitor_new_from_netlink(ec->udev, "udev");
719 if (ec->udev_monitor == NULL) {
720 fprintf(stderr, "failed to intialize udev monitor\n");
723 udev_monitor_filter_add_match_subsystem_devtype(ec->udev_monitor,
725 ec->udev_drm_source =
726 wl_event_loop_add_fd(loop, udev_monitor_get_fd(ec->udev_monitor),
727 WL_EVENT_READABLE, udev_drm_event, ec);
729 if (udev_monitor_enable_receiving(ec->udev_monitor) < 0) {
730 fprintf(stderr, "failed to enable udev-monitor receiving\n");