egl_dri2.c revision 3464ebd5 
1/*
2 * Copyright © 2010 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 */
27
28#include <stdlib.h>
29#include <string.h>
30#include <stdio.h>
31#include <limits.h>
32#include <dlfcn.h>
33#include <fcntl.h>
34#include <errno.h>
35#include <unistd.h>
36#include <xf86drm.h>
37#include <GL/gl.h>
38#include <GL/internal/dri_interface.h>
39#include <sys/types.h>
40#include <sys/stat.h>
41
42#include "egl_dri2.h"
43
44const __DRIuseInvalidateExtension use_invalidate = {
45   { __DRI_USE_INVALIDATE, 1 }
46};
47
48EGLint dri2_to_egl_attribute_map[] = {
49   0,
50   EGL_BUFFER_SIZE,		/* __DRI_ATTRIB_BUFFER_SIZE */
51   EGL_LEVEL,			/* __DRI_ATTRIB_LEVEL */
52   EGL_RED_SIZE,		/* __DRI_ATTRIB_RED_SIZE */
53   EGL_GREEN_SIZE,		/* __DRI_ATTRIB_GREEN_SIZE */
54   EGL_BLUE_SIZE,		/* __DRI_ATTRIB_BLUE_SIZE */
55   EGL_LUMINANCE_SIZE,		/* __DRI_ATTRIB_LUMINANCE_SIZE */
56   EGL_ALPHA_SIZE,		/* __DRI_ATTRIB_ALPHA_SIZE */
57   0,				/* __DRI_ATTRIB_ALPHA_MASK_SIZE */
58   EGL_DEPTH_SIZE,		/* __DRI_ATTRIB_DEPTH_SIZE */
59   EGL_STENCIL_SIZE,		/* __DRI_ATTRIB_STENCIL_SIZE */
60   0,				/* __DRI_ATTRIB_ACCUM_RED_SIZE */
61   0,				/* __DRI_ATTRIB_ACCUM_GREEN_SIZE */
62   0,				/* __DRI_ATTRIB_ACCUM_BLUE_SIZE */
63   0,				/* __DRI_ATTRIB_ACCUM_ALPHA_SIZE */
64   EGL_SAMPLE_BUFFERS,		/* __DRI_ATTRIB_SAMPLE_BUFFERS */
65   EGL_SAMPLES,			/* __DRI_ATTRIB_SAMPLES */
66   0,				/* __DRI_ATTRIB_RENDER_TYPE, */
67   0,				/* __DRI_ATTRIB_CONFIG_CAVEAT */
68   0,				/* __DRI_ATTRIB_CONFORMANT */
69   0,				/* __DRI_ATTRIB_DOUBLE_BUFFER */
70   0,				/* __DRI_ATTRIB_STEREO */
71   0,				/* __DRI_ATTRIB_AUX_BUFFERS */
72   0,				/* __DRI_ATTRIB_TRANSPARENT_TYPE */
73   0,				/* __DRI_ATTRIB_TRANSPARENT_INDEX_VALUE */
74   0,				/* __DRI_ATTRIB_TRANSPARENT_RED_VALUE */
75   0,				/* __DRI_ATTRIB_TRANSPARENT_GREEN_VALUE */
76   0,				/* __DRI_ATTRIB_TRANSPARENT_BLUE_VALUE */
77   0,				/* __DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE */
78   0,				/* __DRI_ATTRIB_FLOAT_MODE */
79   0,				/* __DRI_ATTRIB_RED_MASK */
80   0,				/* __DRI_ATTRIB_GREEN_MASK */
81   0,				/* __DRI_ATTRIB_BLUE_MASK */
82   0,				/* __DRI_ATTRIB_ALPHA_MASK */
83   EGL_MAX_PBUFFER_WIDTH,	/* __DRI_ATTRIB_MAX_PBUFFER_WIDTH */
84   EGL_MAX_PBUFFER_HEIGHT,	/* __DRI_ATTRIB_MAX_PBUFFER_HEIGHT */
85   EGL_MAX_PBUFFER_PIXELS,	/* __DRI_ATTRIB_MAX_PBUFFER_PIXELS */
86   0,				/* __DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH */
87   0,				/* __DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT */
88   0,				/* __DRI_ATTRIB_VISUAL_SELECT_GROUP */
89   0,				/* __DRI_ATTRIB_SWAP_METHOD */
90   EGL_MAX_SWAP_INTERVAL,	/* __DRI_ATTRIB_MAX_SWAP_INTERVAL */
91   EGL_MIN_SWAP_INTERVAL,	/* __DRI_ATTRIB_MIN_SWAP_INTERVAL */
92   0,				/* __DRI_ATTRIB_BIND_TO_TEXTURE_RGB */
93   0,				/* __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA */
94   0,				/* __DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE */
95   0,				/* __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS */
96   EGL_Y_INVERTED_NOK,		/* __DRI_ATTRIB_YINVERTED */
97   0,				/* __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE */
98};
99
100static EGLBoolean
101dri2_match_config(const _EGLConfig *conf, const _EGLConfig *criteria)
102{
103   if (_eglCompareConfigs(conf, criteria, NULL, EGL_FALSE) != 0)
104      return EGL_FALSE;
105
106   if (!_eglMatchConfig(conf, criteria))
107      return EGL_FALSE;
108
109   return EGL_TRUE;
110}
111
112struct dri2_egl_config *
113dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
114		int depth, EGLint surface_type, const EGLint *attr_list)
115{
116   struct dri2_egl_config *conf;
117   struct dri2_egl_display *dri2_dpy;
118   _EGLConfig base;
119   unsigned int attrib, value, double_buffer;
120   EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
121   _EGLConfig *matching_config;
122   EGLint num_configs = 0;
123   EGLint config_id;
124   int i;
125
126   dri2_dpy = disp->DriverData;
127   _eglInitConfig(&base, disp, id);
128
129   i = 0;
130   double_buffer = 0;
131   bind_to_texture_rgb = 0;
132   bind_to_texture_rgba = 0;
133
134   while (dri2_dpy->core->indexConfigAttrib(dri_config, i++, &attrib, &value)) {
135      switch (attrib) {
136      case __DRI_ATTRIB_RENDER_TYPE:
137	 if (value & __DRI_ATTRIB_RGBA_BIT)
138	    value = EGL_RGB_BUFFER;
139	 else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
140	    value = EGL_LUMINANCE_BUFFER;
141	 else
142	    /* not valid */;
143	 _eglSetConfigKey(&base, EGL_COLOR_BUFFER_TYPE, value);
144	 break;
145
146      case __DRI_ATTRIB_CONFIG_CAVEAT:
147         if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
148            value = EGL_NON_CONFORMANT_CONFIG;
149         else if (value & __DRI_ATTRIB_SLOW_BIT)
150            value = EGL_SLOW_CONFIG;
151	 else
152	    value = EGL_NONE;
153	 _eglSetConfigKey(&base, EGL_CONFIG_CAVEAT, value);
154         break;
155
156      case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
157	 bind_to_texture_rgb = value;
158	 break;
159
160      case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
161	 bind_to_texture_rgba = value;
162	 break;
163
164      case __DRI_ATTRIB_DOUBLE_BUFFER:
165	 double_buffer = value;
166	 break;
167
168      default:
169	 key = dri2_to_egl_attribute_map[attrib];
170	 if (key != 0)
171	    _eglSetConfigKey(&base, key, value);
172	 break;
173      }
174   }
175
176   if (attr_list)
177      for (i = 0; attr_list[i] != EGL_NONE; i += 2)
178         _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
179
180   if (depth > 0 && depth != base.BufferSize)
181      return NULL;
182
183   base.NativeRenderable = EGL_TRUE;
184
185   base.SurfaceType = surface_type;
186   if (surface_type & (EGL_PBUFFER_BIT |
187       (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
188      base.BindToTextureRGB = bind_to_texture_rgb;
189      if (base.AlphaSize > 0)
190         base.BindToTextureRGBA = bind_to_texture_rgba;
191   }
192
193   base.RenderableType = disp->ClientAPIs;
194   base.Conformant = disp->ClientAPIs;
195
196   if (!_eglValidateConfig(&base, EGL_FALSE)) {
197      _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
198      return NULL;
199   }
200
201   config_id = base.ConfigID;
202   base.ConfigID    = EGL_DONT_CARE;
203   base.SurfaceType = EGL_DONT_CARE;
204   num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
205                                 (_EGLArrayForEach) dri2_match_config, &base);
206
207   if (num_configs == 1) {
208      conf = (struct dri2_egl_config *) matching_config;
209
210      if (double_buffer && !conf->dri_double_config)
211         conf->dri_double_config = dri_config;
212      else if (!double_buffer && !conf->dri_single_config)
213         conf->dri_single_config = dri_config;
214      else
215         /* a similar config type is already added (unlikely) => discard */
216         return NULL;
217   }
218   else if (num_configs == 0) {
219      conf = malloc(sizeof *conf);
220      if (conf == NULL)
221         return NULL;
222
223      memcpy(&conf->base, &base, sizeof base);
224      if (double_buffer) {
225         conf->dri_double_config = dri_config;
226         conf->dri_single_config = NULL;
227      } else {
228         conf->dri_single_config = dri_config;
229         conf->dri_double_config = NULL;
230      }
231      conf->base.SurfaceType = 0;
232      conf->base.ConfigID = config_id;
233
234      _eglLinkConfig(&conf->base);
235   }
236   else {
237      assert(0);
238      return NULL;
239   }
240
241   conf->base.SurfaceType |= surface_type & (!double_buffer ? EGL_PIXMAP_BIT:
242         (EGL_WINDOW_BIT | EGL_PBUFFER_BIT | EGL_SWAP_BEHAVIOR_PRESERVED_BIT));
243
244   return conf;
245}
246
247__DRIimage *
248dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
249{
250   _EGLDisplay *disp = data;
251   struct dri2_egl_image *dri2_img;
252   _EGLImage *img;
253
254   (void) screen;
255
256   img = _eglLookupImage(image, disp);
257   if (img == NULL) {
258      _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
259      return NULL;
260   }
261
262   dri2_img = dri2_egl_image(image);
263
264   return dri2_img->dri_image;
265}
266
267const __DRIimageLookupExtension image_lookup_extension = {
268   { __DRI_IMAGE_LOOKUP, 1 },
269   dri2_lookup_egl_image
270};
271
272static const char dri_driver_path[] = DEFAULT_DRIVER_DIR;
273
274struct dri2_extension_match {
275   const char *name;
276   int version;
277   int offset;
278};
279
280static struct dri2_extension_match dri2_driver_extensions[] = {
281   { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
282   { __DRI_DRI2, 1, offsetof(struct dri2_egl_display, dri2) },
283   { NULL, 0, 0 }
284};
285
286static struct dri2_extension_match dri2_core_extensions[] = {
287   { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
288   { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
289   { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
290   { NULL, 0, 0 }
291};
292
293static struct dri2_extension_match swrast_driver_extensions[] = {
294   { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
295   { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
296   { NULL }
297};
298
299static struct dri2_extension_match swrast_core_extensions[] = {
300   { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
301   { NULL }
302};
303
304static EGLBoolean
305dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
306		     struct dri2_extension_match *matches,
307		     const __DRIextension **extensions)
308{
309   int i, j, ret = EGL_TRUE;
310   void *field;
311
312   for (i = 0; extensions[i]; i++) {
313      _eglLog(_EGL_DEBUG, "DRI2: found extension `%s'", extensions[i]->name);
314      for (j = 0; matches[j].name; j++) {
315	 if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
316	     extensions[i]->version >= matches[j].version) {
317	    field = ((char *) dri2_dpy + matches[j].offset);
318	    *(const __DRIextension **) field = extensions[i];
319	    _eglLog(_EGL_INFO, "DRI2: found extension %s version %d",
320		    extensions[i]->name, extensions[i]->version);
321	 }
322      }
323   }
324
325   for (j = 0; matches[j].name; j++) {
326      field = ((char *) dri2_dpy + matches[j].offset);
327      if (*(const __DRIextension **) field == NULL) {
328	 _eglLog(_EGL_FATAL, "DRI2: did not find extension %s version %d",
329		 matches[j].name, matches[j].version);
330	 ret = EGL_FALSE;
331      }
332   }
333
334   return ret;
335}
336
337static const __DRIextension **
338dri2_open_driver(_EGLDisplay *disp)
339{
340   struct dri2_egl_display *dri2_dpy = disp->DriverData;
341   const __DRIextension **extensions;
342   char path[PATH_MAX], *search_paths, *p, *next, *end;
343
344   search_paths = NULL;
345   if (geteuid() == getuid()) {
346      /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
347      search_paths = getenv("LIBGL_DRIVERS_PATH");
348   }
349   if (search_paths == NULL)
350      search_paths = DEFAULT_DRIVER_DIR;
351
352   dri2_dpy->driver = NULL;
353   end = search_paths + strlen(search_paths);
354   for (p = search_paths; p < end && dri2_dpy->driver == NULL; p = next + 1) {
355      int len;
356      next = strchr(p, ':');
357      if (next == NULL)
358         next = end;
359
360      len = next - p;
361#if GLX_USE_TLS
362      snprintf(path, sizeof path,
363	       "%.*s/tls/%s_dri.so", len, p, dri2_dpy->driver_name);
364      dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
365#endif
366      if (dri2_dpy->driver == NULL) {
367	 snprintf(path, sizeof path,
368		  "%.*s/%s_dri.so", len, p, dri2_dpy->driver_name);
369	 dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
370	 if (dri2_dpy->driver == NULL)
371	    _eglLog(_EGL_DEBUG, "failed to open %s: %s\n", path, dlerror());
372      }
373   }
374
375   if (dri2_dpy->driver == NULL) {
376      _eglLog(_EGL_WARNING,
377	      "DRI2: failed to open %s (search paths %s)",
378	      dri2_dpy->driver_name, search_paths);
379      return NULL;
380   }
381
382   _eglLog(_EGL_DEBUG, "DRI2: dlopen(%s)", path);
383   extensions = dlsym(dri2_dpy->driver, __DRI_DRIVER_EXTENSIONS);
384   if (extensions == NULL) {
385      _eglLog(_EGL_WARNING,
386	      "DRI2: driver exports no extensions (%s)", dlerror());
387      dlclose(dri2_dpy->driver);
388   }
389
390   return extensions;
391}
392
393EGLBoolean
394dri2_load_driver(_EGLDisplay *disp)
395{
396   struct dri2_egl_display *dri2_dpy = disp->DriverData;
397   const __DRIextension **extensions;
398
399   extensions = dri2_open_driver(disp);
400   if (!extensions)
401      return EGL_FALSE;
402
403   if (!dri2_bind_extensions(dri2_dpy, dri2_driver_extensions, extensions)) {
404      dlclose(dri2_dpy->driver);
405      return EGL_FALSE;
406   }
407
408   return EGL_TRUE;
409}
410
411EGLBoolean
412dri2_load_driver_swrast(_EGLDisplay *disp)
413{
414   struct dri2_egl_display *dri2_dpy = disp->DriverData;
415   const __DRIextension **extensions;
416
417   dri2_dpy->driver_name = "swrast";
418   extensions = dri2_open_driver(disp);
419   if (!extensions) {
420      /* try again with swrastg */
421      dri2_dpy->driver_name = "swrastg";
422      extensions = dri2_open_driver(disp);
423   }
424
425   if (!extensions)
426      return EGL_FALSE;
427
428   if (!dri2_bind_extensions(dri2_dpy, swrast_driver_extensions, extensions)) {
429      dlclose(dri2_dpy->driver);
430      return EGL_FALSE;
431   }
432
433   return EGL_TRUE;
434}
435
436void
437dri2_setup_screen(_EGLDisplay *disp)
438{
439   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
440   unsigned int api_mask;
441
442   if (dri2_dpy->dri2) {
443      if (dri2_dpy->dri2->base.version >= 2)
444         api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
445      else
446         api_mask = 1 << __DRI_API_OPENGL;
447   } else {
448      assert(dri2_dpy->swrast);
449      if (dri2_dpy->swrast->base.version >= 2)
450         api_mask = 1 << __DRI_API_OPENGL | 1 << __DRI_API_GLES | 1 << __DRI_API_GLES2;
451      else
452         api_mask = 1 << __DRI_API_OPENGL;
453   }
454
455   disp->ClientAPIs = 0;
456   if (api_mask & (1 <<__DRI_API_OPENGL))
457      disp->ClientAPIs |= EGL_OPENGL_BIT;
458   if (api_mask & (1 <<__DRI_API_GLES))
459      disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
460   if (api_mask & (1 << __DRI_API_GLES2))
461      disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
462
463   if (dri2_dpy->dri2) {
464      if (dri2_dpy->dri2->base.version >= 2) {
465         disp->Extensions.KHR_surfaceless_gles1 = EGL_TRUE;
466         disp->Extensions.KHR_surfaceless_gles2 = EGL_TRUE;
467         disp->Extensions.KHR_surfaceless_opengl = EGL_TRUE;
468      }
469   } else {
470      assert(dri2_dpy->swrast);
471      if (dri2_dpy->swrast->base.version >= 2) {
472         disp->Extensions.KHR_surfaceless_gles1 = EGL_TRUE;
473         disp->Extensions.KHR_surfaceless_gles2 = EGL_TRUE;
474         disp->Extensions.KHR_surfaceless_opengl = EGL_TRUE;
475      }
476   }
477
478   if (dri2_dpy->image) {
479      disp->Extensions.MESA_drm_image = EGL_TRUE;
480      disp->Extensions.KHR_image_base = EGL_TRUE;
481      disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
482   }
483}
484
485EGLBoolean
486dri2_create_screen(_EGLDisplay *disp)
487{
488   const __DRIextension **extensions;
489   struct dri2_egl_display *dri2_dpy;
490
491   dri2_dpy = disp->DriverData;
492
493   if (dri2_dpy->dri2) {
494      dri2_dpy->dri_screen =
495         dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd, dri2_dpy->extensions,
496				         &dri2_dpy->driver_configs, disp);
497   } else {
498      assert(dri2_dpy->swrast);
499      dri2_dpy->dri_screen =
500         dri2_dpy->swrast->createNewScreen(0, dri2_dpy->extensions,
501                                           &dri2_dpy->driver_configs, disp);
502   }
503
504   if (dri2_dpy->dri_screen == NULL) {
505      _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
506      return EGL_FALSE;
507   }
508
509   dri2_dpy->own_dri_screen = 1;
510
511   extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
512
513   if (dri2_dpy->dri2) {
514      if (!dri2_bind_extensions(dri2_dpy, dri2_core_extensions, extensions))
515         goto cleanup_dri_screen;
516   } else {
517      assert(dri2_dpy->swrast);
518      if (!dri2_bind_extensions(dri2_dpy, swrast_core_extensions, extensions))
519         goto cleanup_dri_screen;
520   }
521
522   dri2_setup_screen(disp);
523
524   return EGL_TRUE;
525
526 cleanup_dri_screen:
527   dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
528
529   return EGL_FALSE;
530}
531
532/**
533 * Called via eglInitialize(), GLX_drv->API.Initialize().
534 */
535static EGLBoolean
536dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp)
537{
538   /* not until swrast_dri is supported */
539   if (disp->Options.UseFallback)
540      return EGL_FALSE;
541
542   switch (disp->Platform) {
543#ifdef HAVE_X11_PLATFORM
544   case _EGL_PLATFORM_X11:
545      if (disp->Options.TestOnly)
546         return EGL_TRUE;
547      return dri2_initialize_x11(drv, disp);
548#endif
549
550#ifdef HAVE_LIBUDEV
551#ifdef HAVE_DRM_PLATFORM
552   case _EGL_PLATFORM_DRM:
553      if (disp->Options.TestOnly)
554         return EGL_TRUE;
555      return dri2_initialize_drm(drv, disp);
556#endif
557#ifdef HAVE_WAYLAND_PLATFORM
558   case _EGL_PLATFORM_WAYLAND:
559      if (disp->Options.TestOnly)
560         return EGL_TRUE;
561      return dri2_initialize_wayland(drv, disp);
562#endif
563#endif
564
565   default:
566      return EGL_FALSE;
567   }
568}
569
570/**
571 * Called via eglTerminate(), drv->API.Terminate().
572 */
573static EGLBoolean
574dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
575{
576   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
577
578   _eglReleaseDisplayResources(drv, disp);
579   _eglCleanupDisplay(disp);
580
581   if (dri2_dpy->own_dri_screen)
582      dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
583   if (dri2_dpy->fd)
584      close(dri2_dpy->fd);
585   if (dri2_dpy->driver)
586      dlclose(dri2_dpy->driver);
587
588   if (disp->PlatformDisplay == NULL) {
589      switch (disp->Platform) {
590#ifdef HAVE_X11_PLATFORM
591      case _EGL_PLATFORM_X11:
592         xcb_disconnect(dri2_dpy->conn);
593         break;
594#endif
595#ifdef HAVE_WAYLAND_PLATFORM
596      case _EGL_PLATFORM_WAYLAND:
597         wl_display_destroy(dri2_dpy->wl_dpy);
598         break;
599#endif
600      default:
601         break;
602      }
603   }
604
605   free(dri2_dpy);
606   disp->DriverData = NULL;
607
608   return EGL_TRUE;
609}
610
611
612/**
613 * Called via eglCreateContext(), drv->API.CreateContext().
614 */
615static _EGLContext *
616dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
617		    _EGLContext *share_list, const EGLint *attrib_list)
618{
619   struct dri2_egl_context *dri2_ctx;
620   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
621   struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
622   struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
623   const __DRIconfig *dri_config;
624   int api;
625
626   (void) drv;
627
628   dri2_ctx = malloc(sizeof *dri2_ctx);
629   if (!dri2_ctx) {
630      _eglError(EGL_BAD_ALLOC, "eglCreateContext");
631      return NULL;
632   }
633
634   if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
635      goto cleanup;
636
637   switch (dri2_ctx->base.ClientAPI) {
638   case EGL_OPENGL_ES_API:
639      switch (dri2_ctx->base.ClientVersion) {
640      case 1:
641         api = __DRI_API_GLES;
642         break;
643      case 2:
644         api = __DRI_API_GLES2;
645         break;
646      default:
647	 _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
648	 return NULL;
649      }
650      break;
651   case EGL_OPENGL_API:
652      api = __DRI_API_OPENGL;
653      break;
654   default:
655      _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
656      return NULL;
657   }
658
659   if (conf != NULL) {
660      /* The config chosen here isn't necessarily
661       * used for surfaces later.
662       * A pixmap surface will use the single config.
663       * This opportunity depends on disabling the
664       * doubleBufferMode check in
665       * src/mesa/main/context.c:check_compatible()
666       */
667      if (dri2_config->dri_double_config)
668         dri_config = dri2_config->dri_double_config;
669      else
670         dri_config = dri2_config->dri_single_config;
671   }
672   else
673      dri_config = NULL;
674
675   if (dri2_dpy->dri2) {
676      if (dri2_dpy->dri2->base.version >= 2) {
677	 dri2_ctx->dri_context =
678	    dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
679						   api,
680						   dri_config,
681						   dri2_ctx_shared ?
682						   dri2_ctx_shared->dri_context : NULL,
683						   dri2_ctx);
684      } else if (api == __DRI_API_OPENGL) {
685	 dri2_ctx->dri_context =
686	    dri2_dpy->dri2->createNewContext(dri2_dpy->dri_screen,
687					     dri_config,
688					     dri2_ctx_shared ?
689					     dri2_ctx_shared->dri_context : NULL,
690					     dri2_ctx);
691      } else {
692	 /* fail */
693      }
694   } else {
695      assert(dri2_dpy->swrast);
696      if (dri2_dpy->swrast->base.version >= 2) {
697	 dri2_ctx->dri_context =
698	    dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
699						     api,
700						     dri_config,
701						     dri2_ctx_shared ?
702						     dri2_ctx_shared->dri_context : NULL,
703						     dri2_ctx);
704      } else if (api == __DRI_API_OPENGL) {
705	 dri2_ctx->dri_context =
706	    dri2_dpy->core->createNewContext(dri2_dpy->dri_screen,
707					     dri_config,
708					     dri2_ctx_shared ?
709					     dri2_ctx_shared->dri_context : NULL,
710					     dri2_ctx);
711      } else {
712	 /* fail */
713      }
714   }
715
716   if (!dri2_ctx->dri_context)
717      goto cleanup;
718
719   return &dri2_ctx->base;
720
721 cleanup:
722   free(dri2_ctx);
723   return NULL;
724}
725
726/**
727 * Called via eglMakeCurrent(), drv->API.MakeCurrent().
728 */
729static EGLBoolean
730dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
731		  _EGLSurface *rsurf, _EGLContext *ctx)
732{
733   struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
734   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
735   struct dri2_egl_surface *dri2_dsurf = dri2_egl_surface(dsurf);
736   struct dri2_egl_surface *dri2_rsurf = dri2_egl_surface(rsurf);
737   struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
738   _EGLContext *old_ctx;
739   _EGLSurface *old_dsurf, *old_rsurf;
740   __DRIdrawable *ddraw, *rdraw;
741   __DRIcontext *cctx;
742
743   /* make new bindings */
744   if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf))
745      return EGL_FALSE;
746
747   /* flush before context switch */
748   if (old_ctx && dri2_drv->glFlush)
749      dri2_drv->glFlush();
750
751   ddraw = (dri2_dsurf) ? dri2_dsurf->dri_drawable : NULL;
752   rdraw = (dri2_rsurf) ? dri2_rsurf->dri_drawable : NULL;
753   cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
754
755   if (old_ctx) {
756      __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
757      dri2_dpy->core->unbindContext(old_cctx);
758   }
759
760   if ((cctx == NULL && ddraw == NULL && rdraw == NULL) ||
761       dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
762      if (old_dsurf)
763         drv->API.DestroySurface(drv, disp, old_dsurf);
764      if (old_rsurf)
765         drv->API.DestroySurface(drv, disp, old_rsurf);
766      /* no destroy? */
767      if (old_ctx)
768         _eglPutContext(old_ctx);
769
770      return EGL_TRUE;
771   } else {
772      /* undo the previous _eglBindContext */
773      _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &dsurf, &rsurf);
774      assert(&dri2_ctx->base == ctx &&
775             &dri2_dsurf->base == dsurf &&
776             &dri2_rsurf->base == rsurf);
777
778      _eglPutSurface(dsurf);
779      _eglPutSurface(rsurf);
780      _eglPutContext(ctx);
781
782      _eglPutSurface(old_dsurf);
783      _eglPutSurface(old_rsurf);
784      _eglPutContext(old_ctx);
785
786      return EGL_FALSE;
787   }
788}
789
790/*
791 * Called from eglGetProcAddress() via drv->API.GetProcAddress().
792 */
793static _EGLProc
794dri2_get_proc_address(_EGLDriver *drv, const char *procname)
795{
796   struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
797
798   return dri2_drv->get_proc_address(procname);
799}
800
801static EGLBoolean
802dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
803{
804   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
805   struct dri2_egl_surface *dri2_surf = dri2_egl_surface(ctx->DrawSurface);
806
807   (void) drv;
808
809   /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
810    * we need to copy fake to real here.*/
811
812   (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
813
814   return EGL_TRUE;
815}
816
817static EGLBoolean
818dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
819{
820   (void) drv;
821   (void) disp;
822
823   if (engine != EGL_CORE_NATIVE_ENGINE)
824      return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
825   /* glXWaitX(); */
826
827   return EGL_TRUE;
828}
829
830static EGLBoolean
831dri2_bind_tex_image(_EGLDriver *drv,
832		    _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
833{
834   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
835   struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
836   struct dri2_egl_context *dri2_ctx;
837   _EGLContext *ctx;
838   GLint format, target;
839
840   ctx = _eglGetCurrentContext();
841   dri2_ctx = dri2_egl_context(ctx);
842
843   if (!_eglBindTexImage(drv, disp, surf, buffer))
844      return EGL_FALSE;
845
846   switch (dri2_surf->base.TextureFormat) {
847   case EGL_TEXTURE_RGB:
848      format = __DRI_TEXTURE_FORMAT_RGB;
849      break;
850   case EGL_TEXTURE_RGBA:
851      format = __DRI_TEXTURE_FORMAT_RGBA;
852      break;
853   default:
854      assert(0);
855   }
856
857   switch (dri2_surf->base.TextureTarget) {
858   case EGL_TEXTURE_2D:
859      target = GL_TEXTURE_2D;
860      break;
861   default:
862      assert(0);
863   }
864
865   (*dri2_dpy->tex_buffer->setTexBuffer2)(dri2_ctx->dri_context,
866					  target, format,
867					  dri2_surf->dri_drawable);
868
869   return EGL_TRUE;
870}
871
872static EGLBoolean
873dri2_release_tex_image(_EGLDriver *drv,
874		       _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
875{
876#if __DRI_TEX_BUFFER_VERSION >= 3
877   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
878   struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
879   struct dri2_egl_context *dri2_ctx;
880   _EGLContext *ctx;
881   GLint  target;
882
883   ctx = _eglGetCurrentContext();
884   dri2_ctx = dri2_egl_context(ctx);
885
886   if (!_eglReleaseTexImage(drv, disp, surf, buffer))
887      return EGL_FALSE;
888
889   switch (dri2_surf->base.TextureTarget) {
890   case EGL_TEXTURE_2D:
891      target = GL_TEXTURE_2D;
892      break;
893   default:
894      assert(0);
895   }
896   if (dri2_dpy->tex_buffer->releaseTexBuffer!=NULL)
897    (*dri2_dpy->tex_buffer->releaseTexBuffer)(dri2_ctx->dri_context,
898                                             target,
899                                             dri2_surf->dri_drawable);
900#endif
901
902   return EGL_TRUE;
903}
904
905static _EGLImage *
906dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
907				   EGLClientBuffer buffer,
908				   const EGLint *attr_list)
909{
910   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
911   struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
912   struct dri2_egl_image *dri2_img;
913   GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
914
915   if (renderbuffer == 0) {
916      _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
917      return EGL_NO_IMAGE_KHR;
918   }
919
920   dri2_img = malloc(sizeof *dri2_img);
921   if (!dri2_img) {
922      _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
923      return EGL_NO_IMAGE_KHR;
924   }
925
926   if (!_eglInitImage(&dri2_img->base, disp))
927      return EGL_NO_IMAGE_KHR;
928
929   dri2_img->dri_image =
930      dri2_dpy->image->createImageFromRenderbuffer(dri2_ctx->dri_context,
931						   renderbuffer,
932						   dri2_img);
933
934   return &dri2_img->base;
935}
936
937static _EGLImage *
938dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
939				  EGLClientBuffer buffer, const EGLint *attr_list)
940{
941   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
942   struct dri2_egl_image *dri2_img;
943   EGLint format, name, pitch, err;
944   _EGLImageAttribs attrs;
945
946   (void) ctx;
947
948   name = (EGLint) (uintptr_t) buffer;
949
950   err = _eglParseImageAttribList(&attrs, disp, attr_list);
951   if (err != EGL_SUCCESS)
952      return NULL;
953
954   if (attrs.Width <= 0 || attrs.Height <= 0 ||
955       attrs.DRMBufferStrideMESA <= 0) {
956      _eglError(EGL_BAD_PARAMETER,
957		"bad width, height or stride");
958      return NULL;
959   }
960
961   switch (attrs.DRMBufferFormatMESA) {
962   case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
963      format = __DRI_IMAGE_FORMAT_ARGB8888;
964      pitch = attrs.DRMBufferStrideMESA;
965      break;
966   default:
967      _eglError(EGL_BAD_PARAMETER,
968		"dri2_create_image_khr: unsupported pixmap depth");
969      return NULL;
970   }
971
972   dri2_img = malloc(sizeof *dri2_img);
973   if (!dri2_img) {
974      _eglError(EGL_BAD_ALLOC, "dri2_create_image_mesa_drm");
975      return NULL;
976   }
977
978   if (!_eglInitImage(&dri2_img->base, disp)) {
979      free(dri2_img);
980      return NULL;
981   }
982
983   dri2_img->dri_image =
984      dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
985					   attrs.Width,
986					   attrs.Height,
987					   format,
988					   name,
989					   pitch,
990					   dri2_img);
991   if (dri2_img->dri_image == NULL) {
992      free(dri2_img);
993      _eglError(EGL_BAD_ALLOC, "dri2_create_image_mesa_drm");
994      return NULL;
995   }
996
997   return &dri2_img->base;
998}
999
1000#ifdef HAVE_WAYLAND_PLATFORM
1001static _EGLImage *
1002dri2_reference_drm_image(_EGLDisplay *disp, _EGLContext *ctx,
1003			 __DRIimage *dri_image, EGLint width, EGLint height)
1004{
1005   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1006   EGLint attr_list[] = {
1007		EGL_WIDTH,		0,
1008		EGL_HEIGHT,		0,
1009		EGL_DRM_BUFFER_STRIDE_MESA,	0,
1010		EGL_DRM_BUFFER_FORMAT_MESA,	EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
1011		EGL_NONE
1012   };
1013   EGLint name, stride;
1014
1015   dri2_dpy->image->queryImage(dri_image, __DRI_IMAGE_ATTRIB_NAME, &name);
1016   dri2_dpy->image->queryImage(dri_image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
1017
1018   attr_list[1] = width;
1019   attr_list[3] = height;
1020   attr_list[5] = stride / 4;
1021
1022   return dri2_create_image_mesa_drm_buffer(disp, ctx,
1023					    (EGLClientBuffer)(intptr_t) name,
1024					    attr_list);
1025}
1026
1027static _EGLImage *
1028dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
1029				    EGLClientBuffer _buffer,
1030				    const EGLint *attr_list)
1031{
1032   struct wl_buffer *buffer = (struct wl_buffer *) _buffer;
1033   (void) attr_list;
1034
1035   if (!wayland_buffer_is_drm(buffer))
1036       return NULL;
1037
1038   return dri2_reference_drm_image(disp, ctx,
1039                                   wayland_drm_buffer_get_buffer(buffer),
1040                                   buffer->width,
1041                                   buffer->height);
1042}
1043#endif
1044
1045_EGLImage *
1046dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
1047		      _EGLContext *ctx, EGLenum target,
1048		      EGLClientBuffer buffer, const EGLint *attr_list)
1049{
1050   (void) drv;
1051
1052   switch (target) {
1053   case EGL_GL_RENDERBUFFER_KHR:
1054      return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
1055   case EGL_DRM_BUFFER_MESA:
1056      return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
1057#ifdef HAVE_WAYLAND_PLATFORM
1058   case EGL_WAYLAND_BUFFER_WL:
1059      return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
1060#endif
1061   default:
1062      _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1063      return EGL_NO_IMAGE_KHR;
1064   }
1065}
1066
1067static EGLBoolean
1068dri2_destroy_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
1069{
1070   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1071   struct dri2_egl_image *dri2_img = dri2_egl_image(image);
1072
1073   (void) drv;
1074
1075   dri2_dpy->image->destroyImage(dri2_img->dri_image);
1076   free(dri2_img);
1077
1078   return EGL_TRUE;
1079}
1080
1081static _EGLImage *
1082dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
1083			   const EGLint *attr_list)
1084{
1085   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1086   struct dri2_egl_image *dri2_img;
1087   _EGLImageAttribs attrs;
1088   unsigned int dri_use, valid_mask;
1089   int format;
1090   EGLint err = EGL_SUCCESS;
1091
1092   (void) drv;
1093
1094   dri2_img = malloc(sizeof *dri2_img);
1095   if (!dri2_img) {
1096      _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1097      return EGL_NO_IMAGE_KHR;
1098   }
1099
1100   if (!attr_list) {
1101      err = EGL_BAD_PARAMETER;
1102      goto cleanup_img;
1103   }
1104
1105   if (!_eglInitImage(&dri2_img->base, disp)) {
1106      err = EGL_BAD_PARAMETER;
1107      goto cleanup_img;
1108   }
1109
1110   err = _eglParseImageAttribList(&attrs, disp, attr_list);
1111   if (err != EGL_SUCCESS)
1112      goto cleanup_img;
1113
1114   if (attrs.Width <= 0 || attrs.Height <= 0) {
1115      _eglLog(_EGL_WARNING, "bad width or height (%dx%d)",
1116            attrs.Width, attrs.Height);
1117      goto cleanup_img;
1118   }
1119
1120   switch (attrs.DRMBufferFormatMESA) {
1121   case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
1122      format = __DRI_IMAGE_FORMAT_ARGB8888;
1123      break;
1124   default:
1125      _eglLog(_EGL_WARNING, "bad image format value 0x%04x",
1126            attrs.DRMBufferFormatMESA);
1127      goto cleanup_img;
1128   }
1129
1130   valid_mask =
1131      EGL_DRM_BUFFER_USE_SCANOUT_MESA |
1132      EGL_DRM_BUFFER_USE_SHARE_MESA |
1133      EGL_DRM_BUFFER_USE_CURSOR_MESA;
1134   if (attrs.DRMBufferUseMESA & ~valid_mask) {
1135      _eglLog(_EGL_WARNING, "bad image use bit 0x%04x",
1136            attrs.DRMBufferUseMESA & ~valid_mask);
1137      goto cleanup_img;
1138   }
1139
1140   dri_use = 0;
1141   if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
1142      dri_use |= __DRI_IMAGE_USE_SHARE;
1143   if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
1144      dri_use |= __DRI_IMAGE_USE_SCANOUT;
1145   if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
1146      dri_use |= __DRI_IMAGE_USE_CURSOR;
1147
1148   dri2_img->dri_image =
1149      dri2_dpy->image->createImage(dri2_dpy->dri_screen,
1150				   attrs.Width, attrs.Height,
1151                                   format, dri_use, dri2_img);
1152   if (dri2_img->dri_image == NULL) {
1153      err = EGL_BAD_ALLOC;
1154      goto cleanup_img;
1155   }
1156
1157   return &dri2_img->base;
1158
1159 cleanup_img:
1160   free(dri2_img);
1161   _eglError(err, "dri2_create_drm_image_mesa");
1162
1163   return EGL_NO_IMAGE_KHR;
1164}
1165
1166static EGLBoolean
1167dri2_export_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
1168			  EGLint *name, EGLint *handle, EGLint *stride)
1169{
1170   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1171   struct dri2_egl_image *dri2_img = dri2_egl_image(img);
1172
1173   (void) drv;
1174
1175   if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
1176					    __DRI_IMAGE_ATTRIB_NAME, name)) {
1177      _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
1178      return EGL_FALSE;
1179   }
1180
1181   if (handle)
1182      dri2_dpy->image->queryImage(dri2_img->dri_image,
1183				  __DRI_IMAGE_ATTRIB_HANDLE, handle);
1184
1185   if (stride)
1186      dri2_dpy->image->queryImage(dri2_img->dri_image,
1187				  __DRI_IMAGE_ATTRIB_STRIDE, stride);
1188
1189   return EGL_TRUE;
1190}
1191
1192#ifdef HAVE_WAYLAND_PLATFORM
1193
1194static void *
1195dri2_wl_reference_buffer(void *user_data, uint32_t name,
1196			 int32_t width, int32_t height,
1197			 uint32_t stride, struct wl_visual *visual)
1198{
1199   _EGLDisplay *disp = user_data;
1200   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1201   __DRIimage *image;
1202
1203   image = dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
1204						width, height,
1205						__DRI_IMAGE_FORMAT_ARGB8888,
1206						name, stride / 4,
1207						NULL);
1208
1209   return image;
1210}
1211
1212static void
1213dri2_wl_release_buffer(void *user_data, void *buffer)
1214{
1215   _EGLDisplay *disp = user_data;
1216   __DRIimage *image = buffer;
1217   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1218
1219   dri2_dpy->image->destroyImage(image);
1220}
1221
1222static struct wayland_drm_callbacks wl_drm_callbacks = {
1223	.authenticate = NULL,
1224	.reference_buffer = dri2_wl_reference_buffer,
1225	.release_buffer = dri2_wl_release_buffer
1226};
1227
1228static EGLBoolean
1229dri2_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
1230			     struct wl_display *wl_dpy)
1231{
1232   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1233
1234   (void) drv;
1235
1236   if (dri2_dpy->wl_server_drm)
1237	   return EGL_FALSE;
1238
1239   wl_drm_callbacks.authenticate =
1240      (int(*)(void *, uint32_t)) dri2_dpy->authenticate;
1241
1242   dri2_dpy->wl_server_drm =
1243	   wayland_drm_init(wl_dpy, dri2_dpy->device_name,
1244                            &wl_drm_callbacks, disp);
1245
1246   if (!dri2_dpy->wl_server_drm)
1247	   return EGL_FALSE;
1248
1249   return EGL_TRUE;
1250}
1251
1252static EGLBoolean
1253dri2_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
1254			       struct wl_display *wl_dpy)
1255{
1256   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1257
1258   (void) drv;
1259
1260   if (!dri2_dpy->wl_server_drm)
1261	   return EGL_FALSE;
1262
1263   wayland_drm_uninit(dri2_dpy->wl_server_drm);
1264   dri2_dpy->wl_server_drm = NULL;
1265
1266   return EGL_TRUE;
1267}
1268#endif
1269
1270static void
1271dri2_unload(_EGLDriver *drv)
1272{
1273   struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
1274
1275   if (dri2_drv->handle)
1276      dlclose(dri2_drv->handle);
1277   free(dri2_drv);
1278}
1279
1280static EGLBoolean
1281dri2_load(_EGLDriver *drv)
1282{
1283   struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
1284#ifdef HAVE_SHARED_GLAPI
1285   const char *libname = "libglapi.so.0";
1286#else
1287   /*
1288    * Both libGL.so and libglapi.so are glapi providers.  There is no way to
1289    * tell which one to load.
1290    */
1291   const char *libname = NULL;
1292#endif
1293   void *handle;
1294
1295   /* RTLD_GLOBAL to make sure glapi symbols are visible to DRI drivers */
1296   handle = dlopen(libname, RTLD_LAZY | RTLD_GLOBAL);
1297   if (handle) {
1298      dri2_drv->get_proc_address = (_EGLProc (*)(const char *))
1299         dlsym(handle, "_glapi_get_proc_address");
1300      if (!dri2_drv->get_proc_address || !libname) {
1301         /* no need to keep a reference */
1302         dlclose(handle);
1303         handle = NULL;
1304      }
1305   }
1306
1307   /* if glapi is not available, loading DRI drivers will fail */
1308   if (!dri2_drv->get_proc_address) {
1309      _eglLog(_EGL_WARNING, "DRI2: failed to find _glapi_get_proc_address");
1310      return EGL_FALSE;
1311   }
1312
1313   dri2_drv->glFlush = (void (*)(void))
1314      dri2_drv->get_proc_address("glFlush");
1315
1316   dri2_drv->handle = handle;
1317
1318   return EGL_TRUE;
1319}
1320
1321/**
1322 * This is the main entrypoint into the driver, called by libEGL.
1323 * Create a new _EGLDriver object and init its dispatch table.
1324 */
1325_EGLDriver *
1326_EGL_MAIN(const char *args)
1327{
1328   struct dri2_egl_driver *dri2_drv;
1329
1330   (void) args;
1331
1332   dri2_drv = malloc(sizeof *dri2_drv);
1333   if (!dri2_drv)
1334      return NULL;
1335
1336   memset(dri2_drv, 0, sizeof *dri2_drv);
1337
1338   if (!dri2_load(&dri2_drv->base))
1339      return NULL;
1340
1341   _eglInitDriverFallbacks(&dri2_drv->base);
1342   dri2_drv->base.API.Initialize = dri2_initialize;
1343   dri2_drv->base.API.Terminate = dri2_terminate;
1344   dri2_drv->base.API.CreateContext = dri2_create_context;
1345   dri2_drv->base.API.MakeCurrent = dri2_make_current;
1346   dri2_drv->base.API.GetProcAddress = dri2_get_proc_address;
1347   dri2_drv->base.API.WaitClient = dri2_wait_client;
1348   dri2_drv->base.API.WaitNative = dri2_wait_native;
1349   dri2_drv->base.API.BindTexImage = dri2_bind_tex_image;
1350   dri2_drv->base.API.ReleaseTexImage = dri2_release_tex_image;
1351   dri2_drv->base.API.CreateImageKHR = dri2_create_image_khr;
1352   dri2_drv->base.API.DestroyImageKHR = dri2_destroy_image_khr;
1353   dri2_drv->base.API.CreateDRMImageMESA = dri2_create_drm_image_mesa;
1354   dri2_drv->base.API.ExportDRMImageMESA = dri2_export_drm_image_mesa;
1355#ifdef HAVE_WAYLAND_PLATFORM
1356   dri2_drv->base.API.BindWaylandDisplayWL = dri2_bind_wayland_display_wl;
1357   dri2_drv->base.API.UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl;
1358#endif
1359
1360   dri2_drv->base.Name = "DRI2";
1361   dri2_drv->base.Unload = dri2_unload;
1362
1363   return &dri2_drv->base;
1364}
1365