platform_wayland.c revision 2225397d1cf5e4f4a1293495f3a26bd33e5d7ac3 
1/*
2 * Copyright © 2011 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
19 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
20 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Authors:
25 *    Kristian Høgsberg <krh@bitplanet.net>
26 *    Benjamin Franzke <benjaminfranzke@googlemail.com>
27 */
28
29#include <stdlib.h>
30#include <string.h>
31#include <limits.h>
32#include <dlfcn.h>
33#include <errno.h>
34#include <unistd.h>
35#include <fcntl.h>
36#include <xf86drm.h>
37
38#include "egl_dri2.h"
39
40#include <wayland-client.h>
41#include "wayland-drm-client-protocol.h"
42
43static void
44sync_callback(void *data)
45{
46   int *done = data;
47
48   *done = 1;
49}
50
51static void
52force_roundtrip(struct wl_display *display)
53{
54   int done = 0;
55
56   wl_display_sync_callback(display, sync_callback, &done);
57   wl_display_iterate(display, WL_DISPLAY_WRITABLE);
58   while (!done)
59      wl_display_iterate(display, WL_DISPLAY_READABLE);
60}
61
62
63/**
64 * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
65 */
66static _EGLSurface *
67dri2_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
68		    _EGLConfig *conf, EGLNativeWindowType window,
69		    const EGLint *attrib_list)
70{
71   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
72   struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
73   struct dri2_egl_surface *dri2_surf;
74   struct dri2_egl_buffer *dri2_buf;
75   int i;
76
77   (void) drv;
78
79   dri2_surf = malloc(sizeof *dri2_surf);
80   if (!dri2_surf) {
81      _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
82      return NULL;
83   }
84
85   if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
86      goto cleanup_surf;
87
88   for (i = 0; i < WL_BUFFER_COUNT; ++i)
89      dri2_surf->wl_drm_buffer[i] = NULL;
90
91   for (i = 0; i < __DRI_BUFFER_COUNT; ++i)
92      dri2_surf->dri_buffers[i] = NULL;
93
94   dri2_surf->pending_buffer = NULL;
95   dri2_surf->block_swap_buffers = EGL_FALSE;
96
97   switch (type) {
98   case EGL_WINDOW_BIT:
99      dri2_surf->wl_win = (struct wl_egl_window *) window;
100      dri2_surf->type = DRI2_WINDOW_SURFACE;
101
102      dri2_surf->base.Width =  -1;
103      dri2_surf->base.Height = -1;
104      break;
105   case EGL_PIXMAP_BIT:
106      dri2_surf->wl_pix = (struct wl_egl_pixmap *) window;
107      dri2_surf->type = DRI2_PIXMAP_SURFACE;
108
109      dri2_surf->base.Width  = dri2_surf->wl_pix->width;
110      dri2_surf->base.Height = dri2_surf->wl_pix->height;
111
112      if (dri2_surf->wl_pix->driver_private) {
113         dri2_buf = dri2_surf->wl_pix->driver_private;
114         dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT] = dri2_buf->dri_buffer;
115      }
116      break;
117   default:
118      goto cleanup_surf;
119   }
120
121   dri2_surf->dri_drawable =
122      (*dri2_dpy->dri2->createNewDrawable) (dri2_dpy->dri_screen,
123					    type == EGL_WINDOW_BIT ?
124					    dri2_conf->dri_double_config :
125					    dri2_conf->dri_single_config,
126					    dri2_surf);
127   if (dri2_surf->dri_drawable == NULL) {
128      _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
129      goto cleanup_dri_drawable;
130   }
131
132   return &dri2_surf->base;
133
134 cleanup_dri_drawable:
135   dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
136 cleanup_surf:
137   free(dri2_surf);
138
139   return NULL;
140}
141
142/**
143 * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
144 */
145static _EGLSurface *
146dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
147			   _EGLConfig *conf, EGLNativeWindowType window,
148			   const EGLint *attrib_list)
149{
150   return dri2_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
151			      window, attrib_list);
152}
153
154static _EGLSurface *
155dri2_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
156			   _EGLConfig *conf, EGLNativePixmapType pixmap,
157			   const EGLint *attrib_list)
158{
159   return dri2_create_surface(drv, disp, EGL_PIXMAP_BIT, conf,
160			      pixmap, attrib_list);
161}
162
163/**
164 * Called via eglDestroySurface(), drv->API.DestroySurface().
165 */
166static EGLBoolean
167dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
168{
169   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
170   struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
171   int i;
172
173   (void) drv;
174
175   if (!_eglPutSurface(surf))
176      return EGL_TRUE;
177
178   (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
179
180   for (i = 0; i < WL_BUFFER_COUNT; ++i)
181      if (dri2_surf->wl_drm_buffer[i])
182         wl_buffer_destroy(dri2_surf->wl_drm_buffer[i]);
183
184   for (i = 0; i < __DRI_BUFFER_COUNT; ++i)
185      if (dri2_surf->dri_buffers[i] && !(i == __DRI_BUFFER_FRONT_LEFT &&
186          dri2_surf->type == DRI2_PIXMAP_SURFACE))
187         dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
188                                       dri2_surf->dri_buffers[i]);
189
190   free(surf);
191
192   return EGL_TRUE;
193}
194
195static void
196dri2_wl_egl_pixmap_destroy(struct wl_egl_pixmap *egl_pixmap)
197{
198   struct dri2_egl_buffer *dri2_buf = egl_pixmap->driver_private;
199
200   assert(dri2_buf);
201
202   dri2_buf->dri2_dpy->dri2->releaseBuffer(dri2_buf->dri2_dpy->dri_screen,
203                                           dri2_buf->dri_buffer);
204
205   free(dri2_buf);
206
207   egl_pixmap->driver_private = NULL;
208   egl_pixmap->destroy = NULL;
209}
210
211static void
212dri2_process_back_buffer(struct dri2_egl_surface *dri2_surf, unsigned format)
213{
214   struct dri2_egl_display *dri2_dpy =
215      dri2_egl_display(dri2_surf->base.Resource.Display);
216
217   (void) format;
218
219   switch (dri2_surf->type) {
220   case DRI2_WINDOW_SURFACE:
221      /* allocate a front buffer for our double-buffered window*/
222      dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT] =
223         dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
224               __DRI_BUFFER_FRONT_LEFT, format,
225               dri2_surf->base.Width, dri2_surf->base.Height);
226      break;
227   default:
228      break;
229   }
230}
231
232static void
233dri2_process_front_buffer(struct dri2_egl_surface *dri2_surf, unsigned format)
234{
235   struct dri2_egl_display *dri2_dpy =
236      dri2_egl_display(dri2_surf->base.Resource.Display);
237   struct dri2_egl_buffer *dri2_buf;
238
239   switch (dri2_surf->type) {
240   case DRI2_PIXMAP_SURFACE:
241      dri2_buf = malloc(sizeof *dri2_buf);
242      if (!dri2_buf)
243         return;
244
245      dri2_buf->dri_buffer = dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT];
246      dri2_buf->dri2_dpy   = dri2_dpy;
247
248      dri2_surf->wl_pix->driver_private = dri2_buf;
249      dri2_surf->wl_pix->destroy        = dri2_wl_egl_pixmap_destroy;
250      break;
251   default:
252      break;
253   }
254}
255
256static void
257dri2_release_pending_buffer(void *data)
258{
259   struct dri2_egl_surface *dri2_surf = data;
260   struct dri2_egl_display *dri2_dpy =
261      dri2_egl_display(dri2_surf->base.Resource.Display);
262
263   /* FIXME: print internal error */
264   if (!dri2_surf->pending_buffer)
265      return;
266
267   dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
268                                 dri2_surf->pending_buffer);
269   dri2_surf->pending_buffer = NULL;
270}
271
272static void
273dri2_release_buffers(struct dri2_egl_surface *dri2_surf)
274{
275   struct dri2_egl_display *dri2_dpy =
276      dri2_egl_display(dri2_surf->base.Resource.Display);
277   int i;
278
279   for (i = 0; i < __DRI_BUFFER_COUNT; ++i) {
280      if (dri2_surf->dri_buffers[i]) {
281         switch (i) {
282         case __DRI_BUFFER_FRONT_LEFT:
283            if (dri2_surf->pending_buffer)
284               force_roundtrip(dri2_dpy->wl_dpy);
285            dri2_surf->pending_buffer = dri2_surf->dri_buffers[i];
286            wl_display_sync_callback(dri2_dpy->wl_dpy,
287                                     dri2_release_pending_buffer, dri2_surf);
288            break;
289         default:
290            dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
291                                          dri2_surf->dri_buffers[i]);
292            break;
293         }
294         dri2_surf->dri_buffers[i] = NULL;
295      }
296   }
297}
298
299static __DRIbuffer *
300dri2_get_buffers_with_format(__DRIdrawable * driDrawable,
301			     int *width, int *height,
302			     unsigned int *attachments, int count,
303			     int *out_count, void *loaderPrivate)
304{
305   struct dri2_egl_surface *dri2_surf = loaderPrivate;
306   struct dri2_egl_display *dri2_dpy =
307      dri2_egl_display(dri2_surf->base.Resource.Display);
308   int i;
309
310   if (dri2_surf->type == DRI2_WINDOW_SURFACE &&
311       (dri2_surf->base.Width != dri2_surf->wl_win->width ||
312        dri2_surf->base.Height != dri2_surf->wl_win->height)) {
313
314      dri2_release_buffers(dri2_surf);
315
316      dri2_surf->base.Width  = dri2_surf->wl_win->width;
317      dri2_surf->base.Height = dri2_surf->wl_win->height;
318      dri2_surf->dx = dri2_surf->wl_win->dx;
319      dri2_surf->dy = dri2_surf->wl_win->dy;
320
321      for (i = 0; i < WL_BUFFER_COUNT; ++i) {
322         if (dri2_surf->wl_drm_buffer[i])
323            wl_buffer_destroy(dri2_surf->wl_drm_buffer[i]);
324         dri2_surf->wl_drm_buffer[i]  = NULL;
325      }
326   }
327
328   dri2_surf->buffer_count = 0;
329   for (i = 0; i < 2*count; i+=2) {
330      assert(attachments[i] < __DRI_BUFFER_COUNT);
331      assert(dri2_surf->buffer_count < 5);
332
333      if (dri2_surf->dri_buffers[attachments[i]] == NULL) {
334
335         dri2_surf->dri_buffers[attachments[i]] =
336            dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
337                  attachments[i], attachments[i+1],
338                  dri2_surf->base.Width, dri2_surf->base.Height);
339
340         if (!dri2_surf->dri_buffers[attachments[i]])
341            continue;
342
343         if (attachments[i] == __DRI_BUFFER_FRONT_LEFT)
344            dri2_process_front_buffer(dri2_surf, attachments[i+1]);
345         else if (attachments[i] == __DRI_BUFFER_BACK_LEFT)
346            dri2_process_back_buffer(dri2_surf, attachments[i+1]);
347      }
348
349      memcpy(&dri2_surf->buffers[dri2_surf->buffer_count],
350             dri2_surf->dri_buffers[attachments[i]],
351             sizeof(__DRIbuffer));
352
353      dri2_surf->buffer_count++;
354   }
355
356   assert(dri2_surf->type == DRI2_PIXMAP_SURFACE ||
357          dri2_surf->dri_buffers[__DRI_BUFFER_BACK_LEFT]);
358
359   *out_count = dri2_surf->buffer_count;
360   if (dri2_surf->buffer_count == 0)
361	   return NULL;
362
363   *width = dri2_surf->base.Width;
364   *height = dri2_surf->base.Height;
365
366   return dri2_surf->buffers;
367}
368
369static __DRIbuffer *
370dri2_get_buffers(__DRIdrawable * driDrawable,
371		 int *width, int *height,
372		 unsigned int *attachments, int count,
373		 int *out_count, void *loaderPrivate)
374{
375   unsigned int *attachments_with_format;
376   __DRIbuffer *buffer;
377   const unsigned int format = 32;
378   int i;
379
380   attachments_with_format = calloc(count * 2, sizeof(unsigned int));
381   if (!attachments_with_format) {
382      *out_count = 0;
383      return NULL;
384   }
385
386   for (i = 0; i < count; ++i) {
387      attachments_with_format[2*i] = attachments[i];
388      attachments_with_format[2*i + 1] = format;
389   }
390
391   buffer =
392      dri2_get_buffers_with_format(driDrawable,
393				   width, height,
394				   attachments_with_format, count,
395				   out_count, loaderPrivate);
396
397   free(attachments_with_format);
398
399   return buffer;
400}
401
402
403static void
404dri2_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
405{
406   (void) driDrawable;
407
408   /* FIXME: Does EGL support front buffer rendering at all? */
409
410#if 0
411   struct dri2_egl_surface *dri2_surf = loaderPrivate;
412
413   dri2WaitGL(dri2_surf);
414#else
415   (void) loaderPrivate;
416#endif
417}
418
419static struct wl_buffer *
420wayland_create_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
421{
422   struct dri2_egl_display *dri2_dpy =
423      dri2_egl_display(dri2_surf->base.Resource.Display);
424
425   return wl_drm_create_buffer(dri2_dpy->wl_drm, buffer->name,
426                               dri2_surf->base.Width, dri2_surf->base.Height,
427                               buffer->pitch, dri2_surf->wl_win->visual);
428}
429
430static void
431wayland_frame_callback(struct wl_surface *surface, void *data, uint32_t time)
432{
433   struct dri2_egl_surface *dri2_surf = data;
434
435   dri2_surf->block_swap_buffers = EGL_FALSE;
436}
437
438static inline void
439pointer_swap(const void **p1, const void **p2)
440{
441   const void *tmp = *p1;
442   *p1 = *p2;
443   *p2 = tmp;
444}
445
446/**
447 * Called via eglSwapBuffers(), drv->API.SwapBuffers().
448 */
449static EGLBoolean
450dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
451{
452   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
453   struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
454   struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
455
456   while (dri2_surf->block_swap_buffers)
457      wl_display_iterate(dri2_dpy->wl_dpy, WL_DISPLAY_READABLE);
458
459   dri2_surf->block_swap_buffers = EGL_TRUE;
460   wl_display_frame_callback(dri2_dpy->wl_dpy,
461	 		     dri2_surf->wl_win->surface,
462			     wayland_frame_callback, dri2_surf);
463
464   if (dri2_surf->type == DRI2_WINDOW_SURFACE) {
465      pointer_swap(
466	    (const void **) &dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT],
467	    (const void **) &dri2_surf->dri_buffers[__DRI_BUFFER_BACK_LEFT]);
468
469      dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT]->attachment =
470	 __DRI_BUFFER_FRONT_LEFT;
471      dri2_surf->dri_buffers[__DRI_BUFFER_BACK_LEFT]->attachment =
472	 __DRI_BUFFER_BACK_LEFT;
473
474      pointer_swap((const void **) &dri2_surf->wl_drm_buffer[WL_BUFFER_FRONT],
475		   (const void **) &dri2_surf->wl_drm_buffer[WL_BUFFER_BACK]);
476
477      if (!dri2_surf->wl_drm_buffer[WL_BUFFER_FRONT])
478	 dri2_surf->wl_drm_buffer[WL_BUFFER_FRONT] =
479	    wayland_create_buffer(dri2_surf,
480		  dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT]);
481
482      wl_surface_attach(dri2_surf->wl_win->surface,
483	    dri2_surf->wl_drm_buffer[WL_BUFFER_FRONT],
484	    dri2_surf->dx, dri2_surf->dy);
485
486      dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
487      dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
488      /* reset resize growing parameters */
489      dri2_surf->dx = 0;
490      dri2_surf->dy = 0;
491
492      wl_surface_damage(dri2_surf->wl_win->surface, 0, 0,
493	    dri2_surf->base.Width, dri2_surf->base.Height);
494   }
495
496   _EGLContext *ctx;
497   if (dri2_drv->glFlush) {
498      ctx = _eglGetCurrentContext();
499      if (ctx && ctx->DrawSurface == &dri2_surf->base)
500         dri2_drv->glFlush();
501   }
502
503   (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
504   (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
505
506   return EGL_TRUE;
507}
508
509/**
510 * Called via eglCreateImageKHR(), drv->API.CreateImageKHR().
511 */
512static _EGLImage *
513dri2_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
514			     EGLClientBuffer buffer, const EGLint *attr_list)
515{
516   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
517   struct wl_egl_pixmap *wl_egl_pixmap = (struct wl_egl_pixmap *) buffer;
518   struct dri2_egl_buffer *dri2_buf;
519   EGLint wl_attr_list[] = {
520		EGL_WIDTH,		0,
521		EGL_HEIGHT,		0,
522		EGL_DRM_BUFFER_STRIDE_MESA,	0,
523		EGL_DRM_BUFFER_FORMAT_MESA,	EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
524		EGL_NONE
525   };
526
527   dri2_buf = malloc(sizeof *dri2_buf);
528   if (!dri2_buf)
529           return NULL;
530
531   dri2_buf->dri2_dpy = dri2_dpy;
532   dri2_buf->dri_buffer =
533      dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
534				     __DRI_BUFFER_FRONT_LEFT, 32,
535				     wl_egl_pixmap->width,
536				     wl_egl_pixmap->height);
537
538   wl_egl_pixmap->destroy = dri2_wl_egl_pixmap_destroy;
539   wl_egl_pixmap->driver_private = dri2_buf;
540
541   wl_egl_pixmap->buffer =
542      wl_drm_create_buffer(dri2_dpy->wl_drm,
543			   dri2_buf->dri_buffer->name,
544			   wl_egl_pixmap->width,
545			   wl_egl_pixmap->height,
546			   dri2_buf->dri_buffer->pitch,
547			   wl_egl_pixmap->visual);
548
549   wl_attr_list[1] = wl_egl_pixmap->width;
550   wl_attr_list[3] = wl_egl_pixmap->height;
551   wl_attr_list[5] = dri2_buf->dri_buffer->pitch / 4;
552
553   return dri2_create_image_khr(disp->Driver, disp, ctx, EGL_DRM_BUFFER_MESA,
554	(EGLClientBuffer)(intptr_t) dri2_buf->dri_buffer->name, wl_attr_list);
555}
556
557static _EGLImage *
558dri2_wayland_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
559			      _EGLContext *ctx, EGLenum target,
560			      EGLClientBuffer buffer, const EGLint *attr_list)
561{
562   (void) drv;
563
564   switch (target) {
565   case EGL_NATIVE_PIXMAP_KHR:
566      return dri2_create_image_khr_pixmap(disp, ctx, buffer, attr_list);
567   default:
568      return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
569   }
570}
571
572static int
573dri2_wayland_authenticate(_EGLDisplay *disp, uint32_t id)
574{
575   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
576   int ret = 0;
577
578   dri2_dpy->authenticated = false;
579
580   wl_drm_authenticate(dri2_dpy->wl_drm, id);
581   force_roundtrip(dri2_dpy->wl_dpy);
582
583   if (!dri2_dpy->authenticated)
584      ret = -1;
585
586   /* reset authenticated */
587   dri2_dpy->authenticated = true;
588
589   return ret;
590}
591
592/**
593 * Called via eglTerminate(), drv->API.Terminate().
594 */
595static EGLBoolean
596dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
597{
598   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
599
600   _eglReleaseDisplayResources(drv, disp);
601   _eglCleanupDisplay(disp);
602
603   dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
604   close(dri2_dpy->fd);
605   dlclose(dri2_dpy->driver);
606   free(dri2_dpy->driver_name);
607   free(dri2_dpy);
608   disp->DriverData = NULL;
609
610   return EGL_TRUE;
611}
612
613static void
614drm_handle_device(void *data, struct wl_drm *drm, const char *device)
615{
616   struct dri2_egl_display *dri2_dpy = data;
617   drm_magic_t magic;
618
619   dri2_dpy->device_name = strdup(device);
620   if (!dri2_dpy->device_name)
621      return;
622
623   dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR);
624   if (dri2_dpy->fd == -1) {
625      _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
626	      dri2_dpy->device_name, strerror(errno));
627      return;
628   }
629
630   drmGetMagic(dri2_dpy->fd, &magic);
631   wl_drm_authenticate(dri2_dpy->wl_drm, magic);
632}
633
634static void
635drm_handle_authenticated(void *data, struct wl_drm *drm)
636{
637   struct dri2_egl_display *dri2_dpy = data;
638
639   dri2_dpy->authenticated = true;
640}
641
642static const struct wl_drm_listener drm_listener = {
643	drm_handle_device,
644	drm_handle_authenticated
645};
646
647EGLBoolean
648dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
649{
650   struct dri2_egl_display *dri2_dpy;
651   uint32_t id;
652   int i;
653
654   drv->API.CreateWindowSurface = dri2_create_window_surface;
655   drv->API.CreatePixmapSurface = dri2_create_pixmap_surface;
656   drv->API.DestroySurface = dri2_destroy_surface;
657   drv->API.SwapBuffers = dri2_swap_buffers;
658   drv->API.CreateImageKHR = dri2_wayland_create_image_khr;
659   drv->API.Terminate = dri2_terminate;
660
661   dri2_dpy = malloc(sizeof *dri2_dpy);
662   if (!dri2_dpy)
663      return _eglError(EGL_BAD_ALLOC, "eglInitialize");
664
665   memset(dri2_dpy, 0, sizeof *dri2_dpy);
666
667   disp->DriverData = (void *) dri2_dpy;
668   dri2_dpy->wl_dpy = disp->PlatformDisplay;
669
670   id = wl_display_get_global(dri2_dpy->wl_dpy, "wl_drm", 1);
671   if (id == 0)
672      wl_display_iterate(dri2_dpy->wl_dpy, WL_DISPLAY_READABLE);
673   id = wl_display_get_global(dri2_dpy->wl_dpy, "wl_drm", 1);
674   if (id == 0)
675      goto cleanup_dpy;
676   dri2_dpy->wl_drm = wl_drm_create(dri2_dpy->wl_dpy, id, 1);
677   if (!dri2_dpy->wl_drm)
678      goto cleanup_dpy;
679   wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
680   force_roundtrip(dri2_dpy->wl_dpy);
681   if (dri2_dpy->fd == -1)
682      goto cleanup_drm;
683
684   force_roundtrip(dri2_dpy->wl_dpy);
685   if (!dri2_dpy->authenticated)
686      goto cleanup_fd;
687
688   dri2_dpy->driver_name = dri2_get_driver_for_fd(dri2_dpy->fd);
689   if (dri2_dpy->driver_name == NULL) {
690      _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
691      goto cleanup_fd;
692   }
693
694   if (!dri2_load_driver(disp))
695      goto cleanup_driver_name;
696
697   dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
698   dri2_dpy->dri2_loader_extension.base.version = 3;
699   dri2_dpy->dri2_loader_extension.getBuffers = dri2_get_buffers;
700   dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_flush_front_buffer;
701   dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
702      dri2_get_buffers_with_format;
703
704   dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base;
705   dri2_dpy->extensions[1] = &image_lookup_extension.base;
706   dri2_dpy->extensions[2] = NULL;
707
708   if (!dri2_create_screen(disp))
709      goto cleanup_driver;
710
711   for (i = 0; dri2_dpy->driver_configs[i]; i++)
712      dri2_add_config(disp, dri2_dpy->driver_configs[i], i + 1, 0,
713		      EGL_WINDOW_BIT | EGL_PIXMAP_BIT, NULL);
714
715
716   disp->Extensions.KHR_image_pixmap = EGL_TRUE;
717
718   disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
719   dri2_dpy->authenticate = dri2_wayland_authenticate;
720
721   /* we're supporting EGL 1.4 */
722   disp->VersionMajor = 1;
723   disp->VersionMinor = 4;
724
725   return EGL_TRUE;
726
727 cleanup_driver:
728   dlclose(dri2_dpy->driver);
729 cleanup_driver_name:
730   free(dri2_dpy->driver_name);
731 cleanup_fd:
732   close(dri2_dpy->fd);
733 cleanup_drm:
734   free(dri2_dpy->device_name);
735   wl_drm_destroy(dri2_dpy->wl_drm);
736 cleanup_dpy:
737   free(dri2_dpy);
738
739   return EGL_FALSE;
740}
741