egl_dri2.c revision 65476169f344115462a652da39972d16aadee86f 
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		const unsigned int *rgba_masks)
116{
117   struct dri2_egl_config *conf;
118   struct dri2_egl_display *dri2_dpy;
119   _EGLConfig base;
120   unsigned int attrib, value, double_buffer;
121   EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
122   unsigned int dri_masks[4] = { 0, 0, 0, 0 };
123   _EGLConfig *matching_config;
124   EGLint num_configs = 0;
125   EGLint config_id;
126   int i;
127
128   dri2_dpy = disp->DriverData;
129   _eglInitConfig(&base, disp, id);
130
131   i = 0;
132   double_buffer = 0;
133   bind_to_texture_rgb = 0;
134   bind_to_texture_rgba = 0;
135
136   while (dri2_dpy->core->indexConfigAttrib(dri_config, i++, &attrib, &value)) {
137      switch (attrib) {
138      case __DRI_ATTRIB_RENDER_TYPE:
139	 if (value & __DRI_ATTRIB_RGBA_BIT)
140	    value = EGL_RGB_BUFFER;
141	 else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
142	    value = EGL_LUMINANCE_BUFFER;
143	 else
144	    /* not valid */;
145	 _eglSetConfigKey(&base, EGL_COLOR_BUFFER_TYPE, value);
146	 break;
147
148      case __DRI_ATTRIB_CONFIG_CAVEAT:
149         if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
150            value = EGL_NON_CONFORMANT_CONFIG;
151         else if (value & __DRI_ATTRIB_SLOW_BIT)
152            value = EGL_SLOW_CONFIG;
153	 else
154	    value = EGL_NONE;
155	 _eglSetConfigKey(&base, EGL_CONFIG_CAVEAT, value);
156         break;
157
158      case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
159	 bind_to_texture_rgb = value;
160	 break;
161
162      case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
163	 bind_to_texture_rgba = value;
164	 break;
165
166      case __DRI_ATTRIB_DOUBLE_BUFFER:
167	 double_buffer = value;
168	 break;
169
170      case __DRI_ATTRIB_RED_MASK:
171         dri_masks[0] = value;
172         break;
173
174      case __DRI_ATTRIB_GREEN_MASK:
175         dri_masks[1] = value;
176         break;
177
178      case __DRI_ATTRIB_BLUE_MASK:
179         dri_masks[2] = value;
180         break;
181
182      case __DRI_ATTRIB_ALPHA_MASK:
183         dri_masks[3] = value;
184         break;
185
186      default:
187	 key = dri2_to_egl_attribute_map[attrib];
188	 if (key != 0)
189	    _eglSetConfigKey(&base, key, value);
190	 break;
191      }
192   }
193
194   if (attr_list)
195      for (i = 0; attr_list[i] != EGL_NONE; i += 2)
196         _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
197
198   if (depth > 0 && depth != base.BufferSize)
199      return NULL;
200
201   if (rgba_masks && memcmp(rgba_masks, dri_masks, sizeof(dri_masks)))
202      return NULL;
203
204   base.NativeRenderable = EGL_TRUE;
205
206   base.SurfaceType = surface_type;
207   if (surface_type & (EGL_PBUFFER_BIT |
208       (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
209      base.BindToTextureRGB = bind_to_texture_rgb;
210      if (base.AlphaSize > 0)
211         base.BindToTextureRGBA = bind_to_texture_rgba;
212   }
213
214   base.RenderableType = disp->ClientAPIs;
215   base.Conformant = disp->ClientAPIs;
216
217   if (!_eglValidateConfig(&base, EGL_FALSE)) {
218      _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
219      return NULL;
220   }
221
222   config_id = base.ConfigID;
223   base.ConfigID    = EGL_DONT_CARE;
224   base.SurfaceType = EGL_DONT_CARE;
225   num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
226                                 (_EGLArrayForEach) dri2_match_config, &base);
227
228   if (num_configs == 1) {
229      conf = (struct dri2_egl_config *) matching_config;
230
231      if (double_buffer && !conf->dri_double_config)
232         conf->dri_double_config = dri_config;
233      else if (!double_buffer && !conf->dri_single_config)
234         conf->dri_single_config = dri_config;
235      else
236         /* a similar config type is already added (unlikely) => discard */
237         return NULL;
238   }
239   else if (num_configs == 0) {
240      conf = malloc(sizeof *conf);
241      if (conf == NULL)
242         return NULL;
243
244      memcpy(&conf->base, &base, sizeof base);
245      if (double_buffer) {
246         conf->dri_double_config = dri_config;
247         conf->dri_single_config = NULL;
248      } else {
249         conf->dri_single_config = dri_config;
250         conf->dri_double_config = NULL;
251      }
252      conf->base.SurfaceType = 0;
253      conf->base.ConfigID = config_id;
254
255      _eglLinkConfig(&conf->base);
256   }
257   else {
258      assert(0);
259      return NULL;
260   }
261
262   if (double_buffer) {
263      surface_type &= ~EGL_PIXMAP_BIT;
264
265      if (dri2_dpy->swap_available) {
266         conf->base.MinSwapInterval = 0;
267         conf->base.MaxSwapInterval = 1000; /* XXX arbitrary value */
268      }
269   }
270
271   conf->base.SurfaceType |= surface_type;
272
273   return conf;
274}
275
276__DRIimage *
277dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
278{
279   _EGLDisplay *disp = data;
280   struct dri2_egl_image *dri2_img;
281   _EGLImage *img;
282
283   (void) screen;
284
285   img = _eglLookupImage(image, disp);
286   if (img == NULL) {
287      _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
288      return NULL;
289   }
290
291   dri2_img = dri2_egl_image(image);
292
293   return dri2_img->dri_image;
294}
295
296const __DRIimageLookupExtension image_lookup_extension = {
297   { __DRI_IMAGE_LOOKUP, 1 },
298   dri2_lookup_egl_image
299};
300
301static const char dri_driver_path[] = DEFAULT_DRIVER_DIR;
302
303struct dri2_extension_match {
304   const char *name;
305   int version;
306   int offset;
307};
308
309static struct dri2_extension_match dri2_driver_extensions[] = {
310   { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
311   { __DRI_DRI2, 2, offsetof(struct dri2_egl_display, dri2) },
312   { NULL, 0, 0 }
313};
314
315static struct dri2_extension_match dri2_core_extensions[] = {
316   { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
317   { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
318   { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
319   { NULL, 0, 0 }
320};
321
322static struct dri2_extension_match swrast_driver_extensions[] = {
323   { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
324   { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
325   { NULL, 0, 0 }
326};
327
328static struct dri2_extension_match swrast_core_extensions[] = {
329   { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
330   { NULL, 0, 0 }
331};
332
333static EGLBoolean
334dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
335		     struct dri2_extension_match *matches,
336		     const __DRIextension **extensions)
337{
338   int i, j, ret = EGL_TRUE;
339   void *field;
340
341   for (i = 0; extensions[i]; i++) {
342      _eglLog(_EGL_DEBUG, "DRI2: found extension `%s'", extensions[i]->name);
343      for (j = 0; matches[j].name; j++) {
344	 if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
345	     extensions[i]->version >= matches[j].version) {
346	    field = ((char *) dri2_dpy + matches[j].offset);
347	    *(const __DRIextension **) field = extensions[i];
348	    _eglLog(_EGL_INFO, "DRI2: found extension %s version %d",
349		    extensions[i]->name, extensions[i]->version);
350	 }
351      }
352   }
353
354   for (j = 0; matches[j].name; j++) {
355      field = ((char *) dri2_dpy + matches[j].offset);
356      if (*(const __DRIextension **) field == NULL) {
357	 _eglLog(_EGL_FATAL, "DRI2: did not find extension %s version %d",
358		 matches[j].name, matches[j].version);
359	 ret = EGL_FALSE;
360      }
361   }
362
363   return ret;
364}
365
366static const __DRIextension **
367dri2_open_driver(_EGLDisplay *disp)
368{
369   struct dri2_egl_display *dri2_dpy = disp->DriverData;
370   const __DRIextension **extensions;
371   char path[PATH_MAX], *search_paths, *p, *next, *end;
372
373   search_paths = NULL;
374   if (geteuid() == getuid()) {
375      /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
376      search_paths = getenv("LIBGL_DRIVERS_PATH");
377   }
378   if (search_paths == NULL)
379      search_paths = DEFAULT_DRIVER_DIR;
380
381   dri2_dpy->driver = NULL;
382   end = search_paths + strlen(search_paths);
383   for (p = search_paths; p < end && dri2_dpy->driver == NULL; p = next + 1) {
384      int len;
385      next = strchr(p, ':');
386      if (next == NULL)
387         next = end;
388
389      len = next - p;
390#if GLX_USE_TLS
391      snprintf(path, sizeof path,
392	       "%.*s/tls/%s_dri.so", len, p, dri2_dpy->driver_name);
393      dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
394#endif
395      if (dri2_dpy->driver == NULL) {
396	 snprintf(path, sizeof path,
397		  "%.*s/%s_dri.so", len, p, dri2_dpy->driver_name);
398	 dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
399	 if (dri2_dpy->driver == NULL)
400	    _eglLog(_EGL_DEBUG, "failed to open %s: %s\n", path, dlerror());
401      }
402   }
403
404   if (dri2_dpy->driver == NULL) {
405      _eglLog(_EGL_WARNING,
406	      "DRI2: failed to open %s (search paths %s)",
407	      dri2_dpy->driver_name, search_paths);
408      return NULL;
409   }
410
411   _eglLog(_EGL_DEBUG, "DRI2: dlopen(%s)", path);
412   extensions = dlsym(dri2_dpy->driver, __DRI_DRIVER_EXTENSIONS);
413   if (extensions == NULL) {
414      _eglLog(_EGL_WARNING,
415	      "DRI2: driver exports no extensions (%s)", dlerror());
416      dlclose(dri2_dpy->driver);
417   }
418
419   return extensions;
420}
421
422EGLBoolean
423dri2_load_driver(_EGLDisplay *disp)
424{
425   struct dri2_egl_display *dri2_dpy = disp->DriverData;
426   const __DRIextension **extensions;
427
428   extensions = dri2_open_driver(disp);
429   if (!extensions)
430      return EGL_FALSE;
431
432   if (!dri2_bind_extensions(dri2_dpy, dri2_driver_extensions, extensions)) {
433      dlclose(dri2_dpy->driver);
434      return EGL_FALSE;
435   }
436
437   return EGL_TRUE;
438}
439
440EGLBoolean
441dri2_load_driver_swrast(_EGLDisplay *disp)
442{
443   struct dri2_egl_display *dri2_dpy = disp->DriverData;
444   const __DRIextension **extensions;
445
446   dri2_dpy->driver_name = "swrast";
447   extensions = dri2_open_driver(disp);
448
449   if (!extensions)
450      return EGL_FALSE;
451
452   if (!dri2_bind_extensions(dri2_dpy, swrast_driver_extensions, extensions)) {
453      dlclose(dri2_dpy->driver);
454      return EGL_FALSE;
455   }
456
457   return EGL_TRUE;
458}
459
460void
461dri2_setup_screen(_EGLDisplay *disp)
462{
463   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
464   unsigned int api_mask;
465
466   if (dri2_dpy->dri2) {
467      api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
468   } else {
469      assert(dri2_dpy->swrast);
470      api_mask = 1 << __DRI_API_OPENGL | 1 << __DRI_API_GLES | 1 << __DRI_API_GLES2;
471   }
472
473   disp->ClientAPIs = 0;
474   if (api_mask & (1 <<__DRI_API_OPENGL))
475      disp->ClientAPIs |= EGL_OPENGL_BIT;
476   if (api_mask & (1 <<__DRI_API_GLES))
477      disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
478   if (api_mask & (1 << __DRI_API_GLES2))
479      disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
480
481   assert(dri2_dpy->dri2 || dri2_dpy->swrast);
482   disp->Extensions.KHR_surfaceless_context = EGL_TRUE;
483
484   if (dri2_dpy->dri2 && dri2_dpy->dri2->base.version >= 3) {
485      disp->Extensions.KHR_create_context = EGL_TRUE;
486
487      if (dri2_dpy->robustness)
488         disp->Extensions.EXT_create_context_robustness = EGL_TRUE;
489   }
490
491   if (dri2_dpy->image) {
492      disp->Extensions.MESA_drm_image = EGL_TRUE;
493      disp->Extensions.KHR_image_base = EGL_TRUE;
494      disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
495   }
496}
497
498EGLBoolean
499dri2_create_screen(_EGLDisplay *disp)
500{
501   const __DRIextension **extensions;
502   struct dri2_egl_display *dri2_dpy;
503
504   dri2_dpy = disp->DriverData;
505
506   if (dri2_dpy->dri2) {
507      dri2_dpy->dri_screen =
508         dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd, dri2_dpy->extensions,
509				         &dri2_dpy->driver_configs, disp);
510   } else {
511      assert(dri2_dpy->swrast);
512      dri2_dpy->dri_screen =
513         dri2_dpy->swrast->createNewScreen(0, dri2_dpy->extensions,
514                                           &dri2_dpy->driver_configs, disp);
515   }
516
517   if (dri2_dpy->dri_screen == NULL) {
518      _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
519      return EGL_FALSE;
520   }
521
522   dri2_dpy->own_dri_screen = 1;
523
524   extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
525
526   if (dri2_dpy->dri2) {
527      unsigned i;
528
529      if (!dri2_bind_extensions(dri2_dpy, dri2_core_extensions, extensions))
530         goto cleanup_dri_screen;
531
532      for (i = 0; extensions[i]; i++) {
533	 if (strcmp(extensions[i]->name, __DRI2_ROBUSTNESS) == 0) {
534            dri2_dpy->robustness = (__DRIrobustnessExtension *) extensions[i];
535	 }
536      }
537   } else {
538      assert(dri2_dpy->swrast);
539      if (!dri2_bind_extensions(dri2_dpy, swrast_core_extensions, extensions))
540         goto cleanup_dri_screen;
541   }
542
543   dri2_setup_screen(disp);
544
545   return EGL_TRUE;
546
547 cleanup_dri_screen:
548   dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
549
550   return EGL_FALSE;
551}
552
553/**
554 * Called via eglInitialize(), GLX_drv->API.Initialize().
555 */
556static EGLBoolean
557dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp)
558{
559   /* not until swrast_dri is supported */
560   if (disp->Options.UseFallback)
561      return EGL_FALSE;
562
563   switch (disp->Platform) {
564#ifdef HAVE_X11_PLATFORM
565   case _EGL_PLATFORM_X11:
566      if (disp->Options.TestOnly)
567         return EGL_TRUE;
568      return dri2_initialize_x11(drv, disp);
569#endif
570
571#ifdef HAVE_LIBUDEV
572#ifdef HAVE_DRM_PLATFORM
573   case _EGL_PLATFORM_DRM:
574      if (disp->Options.TestOnly)
575         return EGL_TRUE;
576      return dri2_initialize_drm(drv, disp);
577#endif
578#ifdef HAVE_WAYLAND_PLATFORM
579   case _EGL_PLATFORM_WAYLAND:
580      if (disp->Options.TestOnly)
581         return EGL_TRUE;
582      return dri2_initialize_wayland(drv, disp);
583#endif
584#endif
585#ifdef HAVE_ANDROID_PLATFORM
586   case _EGL_PLATFORM_ANDROID:
587      if (disp->Options.TestOnly)
588         return EGL_TRUE;
589      return dri2_initialize_android(drv, disp);
590#endif
591
592   default:
593      return EGL_FALSE;
594   }
595}
596
597/**
598 * Called via eglTerminate(), drv->API.Terminate().
599 */
600static EGLBoolean
601dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
602{
603   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
604
605   _eglReleaseDisplayResources(drv, disp);
606   _eglCleanupDisplay(disp);
607
608   if (dri2_dpy->own_dri_screen)
609      dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
610   if (dri2_dpy->fd)
611      close(dri2_dpy->fd);
612   if (dri2_dpy->driver)
613      dlclose(dri2_dpy->driver);
614   if (dri2_dpy->device_name)
615      free(dri2_dpy->device_name);
616
617   if (disp->PlatformDisplay == NULL) {
618      switch (disp->Platform) {
619#ifdef HAVE_X11_PLATFORM
620      case _EGL_PLATFORM_X11:
621         xcb_disconnect(dri2_dpy->conn);
622         break;
623#endif
624#ifdef HAVE_DRM_PLATFORM
625      case _EGL_PLATFORM_DRM:
626         if (dri2_dpy->own_device) {
627            gbm_device_destroy(&dri2_dpy->gbm_dri->base.base);
628         }
629         break;
630#endif
631      default:
632         break;
633      }
634   }
635
636   free(dri2_dpy);
637   disp->DriverData = NULL;
638
639   return EGL_TRUE;
640}
641
642/**
643 * Set the error code after a call to
644 * dri2_egl_display::dri2::createContextAttribs.
645 */
646static void
647dri2_create_context_attribs_error(int dri_error)
648{
649   EGLint egl_error;
650
651   switch (dri_error) {
652   case __DRI_CTX_ERROR_SUCCESS:
653      return;
654
655   case __DRI_CTX_ERROR_NO_MEMORY:
656      egl_error = EGL_BAD_ALLOC;
657      break;
658
659  /* From the EGL_KHR_create_context spec, section "Errors":
660   *
661   *   * If <config> does not support a client API context compatible
662   *     with the requested API major and minor version, [...] context flags,
663   *     and context reset notification behavior (for client API types where
664   *     these attributes are supported), then an EGL_BAD_MATCH error is
665   *     generated.
666   *
667   *   * If an OpenGL ES context is requested and the values for
668   *     attributes EGL_CONTEXT_MAJOR_VERSION_KHR and
669   *     EGL_CONTEXT_MINOR_VERSION_KHR specify an OpenGL ES version that
670   *     is not defined, than an EGL_BAD_MATCH error is generated.
671   *
672   *   * If an OpenGL context is requested, the requested version is
673   *     greater than 3.2, and the value for attribute
674   *     EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR has no bits set; has any
675   *     bits set other than EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR and
676   *     EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR; has more than
677   *     one of these bits set; or if the implementation does not support
678   *     the requested profile, then an EGL_BAD_MATCH error is generated.
679   */
680   case __DRI_CTX_ERROR_BAD_API:
681   case __DRI_CTX_ERROR_BAD_VERSION:
682   case __DRI_CTX_ERROR_BAD_FLAG:
683      egl_error = EGL_BAD_MATCH;
684      break;
685
686  /* From the EGL_KHR_create_context spec, section "Errors":
687   *
688   *   * If an attribute name or attribute value in <attrib_list> is not
689   *     recognized (including unrecognized bits in bitmask attributes),
690   *     then an EGL_BAD_ATTRIBUTE error is generated."
691   */
692   case __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE:
693   case __DRI_CTX_ERROR_UNKNOWN_FLAG:
694      egl_error = EGL_BAD_ATTRIBUTE;
695      break;
696
697   default:
698      assert(0);
699      egl_error = EGL_BAD_MATCH;
700      break;
701   }
702
703   _eglError(egl_error, "dri2_create_context");
704}
705
706/**
707 * Called via eglCreateContext(), drv->API.CreateContext().
708 */
709static _EGLContext *
710dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
711		    _EGLContext *share_list, const EGLint *attrib_list)
712{
713   struct dri2_egl_context *dri2_ctx;
714   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
715   struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
716   __DRIcontext *shared =
717      dri2_ctx_shared ? dri2_ctx_shared->dri_context : NULL;
718   struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
719   const __DRIconfig *dri_config;
720   int api;
721
722   (void) drv;
723
724   dri2_ctx = malloc(sizeof *dri2_ctx);
725   if (!dri2_ctx) {
726      _eglError(EGL_BAD_ALLOC, "eglCreateContext");
727      return NULL;
728   }
729
730   if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
731      goto cleanup;
732
733   switch (dri2_ctx->base.ClientAPI) {
734   case EGL_OPENGL_ES_API:
735      switch (dri2_ctx->base.ClientMajorVersion) {
736      case 1:
737         api = __DRI_API_GLES;
738         break;
739      case 2:
740      case 3:
741         api = __DRI_API_GLES2;
742         break;
743      default:
744	 _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
745	 return NULL;
746      }
747      break;
748   case EGL_OPENGL_API:
749      if ((dri2_ctx->base.ClientMajorVersion >= 4
750           || (dri2_ctx->base.ClientMajorVersion == 3
751               && dri2_ctx->base.ClientMinorVersion >= 2))
752          && dri2_ctx->base.Profile == EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR)
753         api = __DRI_API_OPENGL_CORE;
754      else
755         api = __DRI_API_OPENGL;
756      break;
757   default:
758      _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
759      return NULL;
760   }
761
762   if (conf != NULL) {
763      /* The config chosen here isn't necessarily
764       * used for surfaces later.
765       * A pixmap surface will use the single config.
766       * This opportunity depends on disabling the
767       * doubleBufferMode check in
768       * src/mesa/main/context.c:check_compatible()
769       */
770      if (dri2_config->dri_double_config)
771         dri_config = dri2_config->dri_double_config;
772      else
773         dri_config = dri2_config->dri_single_config;
774
775      /* EGL_WINDOW_BIT is set only when there is a dri_double_config.  This
776       * makes sure the back buffer will always be used.
777       */
778      if (conf->SurfaceType & EGL_WINDOW_BIT)
779         dri2_ctx->base.WindowRenderBuffer = EGL_BACK_BUFFER;
780   }
781   else
782      dri_config = NULL;
783
784   if (dri2_dpy->dri2) {
785      if (dri2_dpy->dri2->base.version >= 3) {
786         unsigned error;
787         unsigned num_attribs = 0;
788         uint32_t ctx_attribs[8];
789
790         ctx_attribs[num_attribs++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
791         ctx_attribs[num_attribs++] = dri2_ctx->base.ClientMajorVersion;
792         ctx_attribs[num_attribs++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
793         ctx_attribs[num_attribs++] = dri2_ctx->base.ClientMinorVersion;
794
795         if (dri2_ctx->base.Flags != 0) {
796            /* If the implementation doesn't support the __DRI2_ROBUSTNESS
797             * extension, don't even try to send it the robust-access flag.
798             * It may explode.  Instead, generate the required EGL error here.
799             */
800            if ((dri2_ctx->base.Flags & EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR) != 0
801                && !dri2_dpy->robustness) {
802               _eglError(EGL_BAD_MATCH, "eglCreateContext");
803               goto cleanup;
804            }
805
806            ctx_attribs[num_attribs++] = __DRI_CTX_ATTRIB_FLAGS;
807            ctx_attribs[num_attribs++] = dri2_ctx->base.Flags;
808         }
809
810         if (dri2_ctx->base.ResetNotificationStrategy != EGL_NO_RESET_NOTIFICATION_KHR) {
811            /* If the implementation doesn't support the __DRI2_ROBUSTNESS
812             * extension, don't even try to send it a reset strategy.  It may
813             * explode.  Instead, generate the required EGL error here.
814             */
815            if (!dri2_dpy->robustness) {
816               _eglError(EGL_BAD_CONFIG, "eglCreateContext");
817               goto cleanup;
818            }
819
820            ctx_attribs[num_attribs++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
821            ctx_attribs[num_attribs++] = __DRI_CTX_RESET_LOSE_CONTEXT;
822         }
823
824         assert(num_attribs <= ARRAY_SIZE(ctx_attribs));
825
826	 dri2_ctx->dri_context =
827	    dri2_dpy->dri2->createContextAttribs(dri2_dpy->dri_screen,
828                                                 api,
829                                                 dri_config,
830                                                 shared,
831                                                 num_attribs / 2,
832                                                 ctx_attribs,
833                                                 & error,
834                                                 dri2_ctx);
835	 dri2_create_context_attribs_error(error);
836      } else {
837	 dri2_ctx->dri_context =
838	    dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
839						   api,
840						   dri_config,
841                                                   shared,
842						   dri2_ctx);
843      }
844   } else {
845      assert(dri2_dpy->swrast);
846      dri2_ctx->dri_context =
847         dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
848                                                  api,
849                                                  dri_config,
850                                                  shared,
851                                                  dri2_ctx);
852   }
853
854   if (!dri2_ctx->dri_context)
855      goto cleanup;
856
857   return &dri2_ctx->base;
858
859 cleanup:
860   free(dri2_ctx);
861   return NULL;
862}
863
864/**
865 * Called via eglDestroyContext(), drv->API.DestroyContext().
866 */
867static EGLBoolean
868dri2_destroy_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
869{
870   struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
871   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
872
873   if (_eglPutContext(ctx)) {
874      dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
875      free(dri2_ctx);
876   }
877
878   return EGL_TRUE;
879}
880
881/**
882 * Called via eglMakeCurrent(), drv->API.MakeCurrent().
883 */
884static EGLBoolean
885dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
886		  _EGLSurface *rsurf, _EGLContext *ctx)
887{
888   struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
889   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
890   struct dri2_egl_surface *dri2_dsurf = dri2_egl_surface(dsurf);
891   struct dri2_egl_surface *dri2_rsurf = dri2_egl_surface(rsurf);
892   struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
893   _EGLContext *old_ctx;
894   _EGLSurface *old_dsurf, *old_rsurf;
895   __DRIdrawable *ddraw, *rdraw;
896   __DRIcontext *cctx;
897
898   /* make new bindings */
899   if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf))
900      return EGL_FALSE;
901
902   /* flush before context switch */
903   if (old_ctx && dri2_drv->glFlush)
904      dri2_drv->glFlush();
905
906   ddraw = (dri2_dsurf) ? dri2_dsurf->dri_drawable : NULL;
907   rdraw = (dri2_rsurf) ? dri2_rsurf->dri_drawable : NULL;
908   cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
909
910   if (old_ctx) {
911      __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
912      dri2_dpy->core->unbindContext(old_cctx);
913   }
914
915   if ((cctx == NULL && ddraw == NULL && rdraw == NULL) ||
916       dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
917      if (old_dsurf)
918         drv->API.DestroySurface(drv, disp, old_dsurf);
919      if (old_rsurf)
920         drv->API.DestroySurface(drv, disp, old_rsurf);
921      if (old_ctx)
922         drv->API.DestroyContext(drv, disp, old_ctx);
923
924      return EGL_TRUE;
925   } else {
926      /* undo the previous _eglBindContext */
927      _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &dsurf, &rsurf);
928      assert(&dri2_ctx->base == ctx &&
929             &dri2_dsurf->base == dsurf &&
930             &dri2_rsurf->base == rsurf);
931
932      _eglPutSurface(dsurf);
933      _eglPutSurface(rsurf);
934      _eglPutContext(ctx);
935
936      _eglPutSurface(old_dsurf);
937      _eglPutSurface(old_rsurf);
938      _eglPutContext(old_ctx);
939
940      return EGL_FALSE;
941   }
942}
943
944/*
945 * Called from eglGetProcAddress() via drv->API.GetProcAddress().
946 */
947static _EGLProc
948dri2_get_proc_address(_EGLDriver *drv, const char *procname)
949{
950   struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
951
952   return dri2_drv->get_proc_address(procname);
953}
954
955static EGLBoolean
956dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
957{
958   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
959   struct dri2_egl_surface *dri2_surf = dri2_egl_surface(ctx->DrawSurface);
960
961   (void) drv;
962
963   /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
964    * we need to copy fake to real here.*/
965
966   (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
967
968   return EGL_TRUE;
969}
970
971static EGLBoolean
972dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
973{
974   (void) drv;
975   (void) disp;
976
977   if (engine != EGL_CORE_NATIVE_ENGINE)
978      return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
979   /* glXWaitX(); */
980
981   return EGL_TRUE;
982}
983
984static EGLBoolean
985dri2_bind_tex_image(_EGLDriver *drv,
986		    _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
987{
988   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
989   struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
990   struct dri2_egl_context *dri2_ctx;
991   _EGLContext *ctx;
992   GLint format, target;
993
994   ctx = _eglGetCurrentContext();
995   dri2_ctx = dri2_egl_context(ctx);
996
997   if (!_eglBindTexImage(drv, disp, surf, buffer))
998      return EGL_FALSE;
999
1000   switch (dri2_surf->base.TextureFormat) {
1001   case EGL_TEXTURE_RGB:
1002      format = __DRI_TEXTURE_FORMAT_RGB;
1003      break;
1004   case EGL_TEXTURE_RGBA:
1005      format = __DRI_TEXTURE_FORMAT_RGBA;
1006      break;
1007   default:
1008      assert(0);
1009   }
1010
1011   switch (dri2_surf->base.TextureTarget) {
1012   case EGL_TEXTURE_2D:
1013      target = GL_TEXTURE_2D;
1014      break;
1015   default:
1016      assert(0);
1017   }
1018
1019   (*dri2_dpy->tex_buffer->setTexBuffer2)(dri2_ctx->dri_context,
1020					  target, format,
1021					  dri2_surf->dri_drawable);
1022
1023   return EGL_TRUE;
1024}
1025
1026static EGLBoolean
1027dri2_release_tex_image(_EGLDriver *drv,
1028		       _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1029{
1030#if __DRI_TEX_BUFFER_VERSION >= 3
1031   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1032   struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1033   struct dri2_egl_context *dri2_ctx;
1034   _EGLContext *ctx;
1035   GLint  target;
1036
1037   ctx = _eglGetCurrentContext();
1038   dri2_ctx = dri2_egl_context(ctx);
1039
1040   if (!_eglReleaseTexImage(drv, disp, surf, buffer))
1041      return EGL_FALSE;
1042
1043   switch (dri2_surf->base.TextureTarget) {
1044   case EGL_TEXTURE_2D:
1045      target = GL_TEXTURE_2D;
1046      break;
1047   default:
1048      assert(0);
1049   }
1050   if (dri2_dpy->tex_buffer->releaseTexBuffer!=NULL)
1051    (*dri2_dpy->tex_buffer->releaseTexBuffer)(dri2_ctx->dri_context,
1052                                             target,
1053                                             dri2_surf->dri_drawable);
1054#endif
1055
1056   return EGL_TRUE;
1057}
1058
1059static _EGLImage *
1060dri2_create_image(_EGLDisplay *disp, __DRIimage *dri_image)
1061{
1062   struct dri2_egl_image *dri2_img;
1063
1064   if (dri_image == NULL) {
1065      _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1066      return NULL;
1067   }
1068
1069   dri2_img = malloc(sizeof *dri2_img);
1070   if (!dri2_img) {
1071      _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1072      return NULL;
1073   }
1074
1075   if (!_eglInitImage(&dri2_img->base, disp)) {
1076      free(dri2_img);
1077      return NULL;
1078   }
1079
1080   dri2_img->dri_image = dri_image;
1081
1082   return &dri2_img->base;
1083}
1084
1085static _EGLImage *
1086dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
1087				   EGLClientBuffer buffer,
1088				   const EGLint *attr_list)
1089{
1090   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1091   struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1092   GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
1093   __DRIimage *dri_image;
1094
1095   if (renderbuffer == 0) {
1096      _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1097      return EGL_NO_IMAGE_KHR;
1098   }
1099
1100   dri_image =
1101      dri2_dpy->image->createImageFromRenderbuffer(dri2_ctx->dri_context,
1102                                                   renderbuffer, NULL);
1103
1104   return dri2_create_image(disp, dri_image);
1105}
1106
1107static _EGLImage *
1108dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
1109				  EGLClientBuffer buffer, const EGLint *attr_list)
1110{
1111   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1112   EGLint format, name, pitch, err;
1113   _EGLImageAttribs attrs;
1114   __DRIimage *dri_image;
1115
1116   name = (EGLint) (uintptr_t) buffer;
1117
1118   err = _eglParseImageAttribList(&attrs, disp, attr_list);
1119   if (err != EGL_SUCCESS)
1120      return NULL;
1121
1122   if (attrs.Width <= 0 || attrs.Height <= 0 ||
1123       attrs.DRMBufferStrideMESA <= 0) {
1124      _eglError(EGL_BAD_PARAMETER,
1125		"bad width, height or stride");
1126      return NULL;
1127   }
1128
1129   switch (attrs.DRMBufferFormatMESA) {
1130   case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
1131      format = __DRI_IMAGE_FORMAT_ARGB8888;
1132      pitch = attrs.DRMBufferStrideMESA;
1133      break;
1134   default:
1135      _eglError(EGL_BAD_PARAMETER,
1136		"dri2_create_image_khr: unsupported pixmap depth");
1137      return NULL;
1138   }
1139
1140   dri_image =
1141      dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
1142					   attrs.Width,
1143					   attrs.Height,
1144					   format,
1145					   name,
1146					   pitch,
1147					   NULL);
1148
1149   return dri2_create_image(disp, dri_image);
1150}
1151
1152#ifdef HAVE_WAYLAND_PLATFORM
1153
1154/* This structure describes how a wl_buffer maps to one or more
1155 * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
1156 * offsets and strides of the planes in the buffer.  This table maps a
1157 * wl_drm format code to a description of the planes in the buffer
1158 * that lets us create a __DRIimage for each of the planes. */
1159
1160static const struct wl_drm_components_descriptor {
1161   uint32_t dri_components;
1162   EGLint components;
1163   int nplanes;
1164} wl_drm_components[] = {
1165   { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
1166   { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
1167   { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
1168   { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
1169   { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
1170};
1171
1172static _EGLImage *
1173dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
1174				    EGLClientBuffer _buffer,
1175				    const EGLint *attr_list)
1176{
1177   struct wl_drm_buffer *buffer = (struct wl_drm_buffer *) _buffer;
1178   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1179   const struct wl_drm_components_descriptor *f;
1180   __DRIimage *dri_image;
1181   _EGLImageAttribs attrs;
1182   EGLint err;
1183   int32_t plane;
1184
1185   if (!wayland_buffer_is_drm(&buffer->buffer))
1186       return NULL;
1187
1188   err = _eglParseImageAttribList(&attrs, disp, attr_list);
1189   plane = attrs.PlaneWL;
1190   if (err != EGL_SUCCESS) {
1191      _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
1192      return NULL;
1193   }
1194
1195   f = buffer->driver_format;
1196   if (plane < 0 || plane >= f->nplanes) {
1197      _eglError(EGL_BAD_PARAMETER,
1198                "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
1199      return NULL;
1200   }
1201
1202   dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
1203
1204   if (dri_image == NULL) {
1205      _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
1206      return NULL;
1207   }
1208
1209   return dri2_create_image(disp, dri_image);
1210}
1211#endif
1212
1213_EGLImage *
1214dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
1215		      _EGLContext *ctx, EGLenum target,
1216		      EGLClientBuffer buffer, const EGLint *attr_list)
1217{
1218   (void) drv;
1219
1220   switch (target) {
1221   case EGL_GL_RENDERBUFFER_KHR:
1222      return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
1223   case EGL_DRM_BUFFER_MESA:
1224      return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
1225#ifdef HAVE_WAYLAND_PLATFORM
1226   case EGL_WAYLAND_BUFFER_WL:
1227      return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
1228#endif
1229   default:
1230      _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1231      return EGL_NO_IMAGE_KHR;
1232   }
1233}
1234
1235static EGLBoolean
1236dri2_destroy_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
1237{
1238   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1239   struct dri2_egl_image *dri2_img = dri2_egl_image(image);
1240
1241   (void) drv;
1242
1243   dri2_dpy->image->destroyImage(dri2_img->dri_image);
1244   free(dri2_img);
1245
1246   return EGL_TRUE;
1247}
1248
1249static _EGLImage *
1250dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
1251			   const EGLint *attr_list)
1252{
1253   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1254   struct dri2_egl_image *dri2_img;
1255   _EGLImageAttribs attrs;
1256   unsigned int dri_use, valid_mask;
1257   int format;
1258   EGLint err = EGL_SUCCESS;
1259
1260   (void) drv;
1261
1262   dri2_img = malloc(sizeof *dri2_img);
1263   if (!dri2_img) {
1264      _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1265      return EGL_NO_IMAGE_KHR;
1266   }
1267
1268   if (!attr_list) {
1269      err = EGL_BAD_PARAMETER;
1270      goto cleanup_img;
1271   }
1272
1273   if (!_eglInitImage(&dri2_img->base, disp)) {
1274      err = EGL_BAD_PARAMETER;
1275      goto cleanup_img;
1276   }
1277
1278   err = _eglParseImageAttribList(&attrs, disp, attr_list);
1279   if (err != EGL_SUCCESS)
1280      goto cleanup_img;
1281
1282   if (attrs.Width <= 0 || attrs.Height <= 0) {
1283      _eglLog(_EGL_WARNING, "bad width or height (%dx%d)",
1284            attrs.Width, attrs.Height);
1285      goto cleanup_img;
1286   }
1287
1288   switch (attrs.DRMBufferFormatMESA) {
1289   case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
1290      format = __DRI_IMAGE_FORMAT_ARGB8888;
1291      break;
1292   default:
1293      _eglLog(_EGL_WARNING, "bad image format value 0x%04x",
1294            attrs.DRMBufferFormatMESA);
1295      goto cleanup_img;
1296   }
1297
1298   valid_mask =
1299      EGL_DRM_BUFFER_USE_SCANOUT_MESA |
1300      EGL_DRM_BUFFER_USE_SHARE_MESA |
1301      EGL_DRM_BUFFER_USE_CURSOR_MESA;
1302   if (attrs.DRMBufferUseMESA & ~valid_mask) {
1303      _eglLog(_EGL_WARNING, "bad image use bit 0x%04x",
1304            attrs.DRMBufferUseMESA & ~valid_mask);
1305      goto cleanup_img;
1306   }
1307
1308   dri_use = 0;
1309   if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
1310      dri_use |= __DRI_IMAGE_USE_SHARE;
1311   if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
1312      dri_use |= __DRI_IMAGE_USE_SCANOUT;
1313   if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
1314      dri_use |= __DRI_IMAGE_USE_CURSOR;
1315
1316   dri2_img->dri_image =
1317      dri2_dpy->image->createImage(dri2_dpy->dri_screen,
1318				   attrs.Width, attrs.Height,
1319                                   format, dri_use, dri2_img);
1320   if (dri2_img->dri_image == NULL) {
1321      err = EGL_BAD_ALLOC;
1322      goto cleanup_img;
1323   }
1324
1325   return &dri2_img->base;
1326
1327 cleanup_img:
1328   free(dri2_img);
1329   _eglError(err, "dri2_create_drm_image_mesa");
1330
1331   return EGL_NO_IMAGE_KHR;
1332}
1333
1334static EGLBoolean
1335dri2_export_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
1336			  EGLint *name, EGLint *handle, EGLint *stride)
1337{
1338   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1339   struct dri2_egl_image *dri2_img = dri2_egl_image(img);
1340
1341   (void) drv;
1342
1343   if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
1344					    __DRI_IMAGE_ATTRIB_NAME, name)) {
1345      _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
1346      return EGL_FALSE;
1347   }
1348
1349   if (handle)
1350      dri2_dpy->image->queryImage(dri2_img->dri_image,
1351				  __DRI_IMAGE_ATTRIB_HANDLE, handle);
1352
1353   if (stride)
1354      dri2_dpy->image->queryImage(dri2_img->dri_image,
1355				  __DRI_IMAGE_ATTRIB_STRIDE, stride);
1356
1357   return EGL_TRUE;
1358}
1359
1360#ifdef HAVE_WAYLAND_PLATFORM
1361
1362static void
1363dri2_wl_reference_buffer(void *user_data, uint32_t name,
1364                         struct wl_drm_buffer *buffer)
1365{
1366   _EGLDisplay *disp = user_data;
1367   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1368   __DRIimage *img;
1369   int i, dri_components = 0;
1370
1371   img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
1372                                               buffer->buffer.width,
1373                                               buffer->buffer.height,
1374                                               buffer->format, (int*)&name, 1,
1375                                               buffer->stride,
1376                                               buffer->offset,
1377                                               NULL);
1378
1379   if (img == NULL)
1380      return;
1381
1382   dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
1383
1384   buffer->driver_format = NULL;
1385   for (i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
1386      if (wl_drm_components[i].dri_components == dri_components)
1387         buffer->driver_format = &wl_drm_components[i];
1388
1389   if (buffer->driver_format == NULL)
1390      dri2_dpy->image->destroyImage(img);
1391   else
1392      buffer->driver_buffer = img;
1393}
1394
1395static void
1396dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
1397{
1398   _EGLDisplay *disp = user_data;
1399   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1400
1401   dri2_dpy->image->destroyImage(buffer->driver_buffer);
1402}
1403
1404static struct wayland_drm_callbacks wl_drm_callbacks = {
1405	.authenticate = NULL,
1406	.reference_buffer = dri2_wl_reference_buffer,
1407	.release_buffer = dri2_wl_release_buffer
1408};
1409
1410static EGLBoolean
1411dri2_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
1412			     struct wl_display *wl_dpy)
1413{
1414   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1415
1416   (void) drv;
1417
1418   if (dri2_dpy->wl_server_drm)
1419	   return EGL_FALSE;
1420
1421   wl_drm_callbacks.authenticate =
1422      (int(*)(void *, uint32_t)) dri2_dpy->authenticate;
1423
1424   dri2_dpy->wl_server_drm =
1425	   wayland_drm_init(wl_dpy, dri2_dpy->device_name,
1426                            &wl_drm_callbacks, disp);
1427
1428   if (!dri2_dpy->wl_server_drm)
1429	   return EGL_FALSE;
1430
1431   return EGL_TRUE;
1432}
1433
1434static EGLBoolean
1435dri2_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
1436			       struct wl_display *wl_dpy)
1437{
1438   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1439
1440   (void) drv;
1441
1442   if (!dri2_dpy->wl_server_drm)
1443	   return EGL_FALSE;
1444
1445   wayland_drm_uninit(dri2_dpy->wl_server_drm);
1446   dri2_dpy->wl_server_drm = NULL;
1447
1448   return EGL_TRUE;
1449}
1450
1451static EGLBoolean
1452dri2_query_wayland_buffer_wl(_EGLDriver *drv, _EGLDisplay *disp,
1453                             struct wl_buffer *_buffer,
1454                             EGLint attribute, EGLint *value)
1455{
1456   struct wl_drm_buffer *buffer = (struct wl_drm_buffer *) _buffer;
1457   const struct wl_drm_components_descriptor *format;
1458
1459   if (!wayland_buffer_is_drm(&buffer->buffer))
1460      return EGL_FALSE;
1461
1462   format = buffer->driver_format;
1463   switch (attribute) {
1464   case EGL_TEXTURE_FORMAT:
1465      *value = format->components;
1466      return EGL_TRUE;
1467   case EGL_WIDTH:
1468      *value = buffer->buffer.width;
1469      break;
1470   case EGL_HEIGHT:
1471      *value = buffer->buffer.height;
1472      break;
1473   }
1474
1475   return EGL_FALSE;
1476}
1477#endif
1478
1479static void
1480dri2_unload(_EGLDriver *drv)
1481{
1482   struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
1483
1484   if (dri2_drv->handle)
1485      dlclose(dri2_drv->handle);
1486   free(dri2_drv);
1487}
1488
1489static EGLBoolean
1490dri2_load(_EGLDriver *drv)
1491{
1492   struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
1493#ifdef HAVE_SHARED_GLAPI
1494#ifdef HAVE_ANDROID_PLATFORM
1495   const char *libname = "libglapi.so";
1496#else
1497   const char *libname = "libglapi.so.0";
1498#endif
1499#else
1500   /*
1501    * Both libGL.so and libglapi.so are glapi providers.  There is no way to
1502    * tell which one to load.
1503    */
1504   const char *libname = NULL;
1505#endif
1506   void *handle;
1507
1508   /* RTLD_GLOBAL to make sure glapi symbols are visible to DRI drivers */
1509   handle = dlopen(libname, RTLD_LAZY | RTLD_GLOBAL);
1510   if (handle) {
1511      dri2_drv->get_proc_address = (_EGLProc (*)(const char *))
1512         dlsym(handle, "_glapi_get_proc_address");
1513      if (!dri2_drv->get_proc_address || !libname) {
1514         /* no need to keep a reference */
1515         dlclose(handle);
1516         handle = NULL;
1517      }
1518   }
1519
1520   /* if glapi is not available, loading DRI drivers will fail */
1521   if (!dri2_drv->get_proc_address) {
1522      _eglLog(_EGL_WARNING, "DRI2: failed to find _glapi_get_proc_address");
1523      return EGL_FALSE;
1524   }
1525
1526   dri2_drv->glFlush = (void (*)(void))
1527      dri2_drv->get_proc_address("glFlush");
1528
1529   dri2_drv->handle = handle;
1530
1531   return EGL_TRUE;
1532}
1533
1534/**
1535 * This is the main entrypoint into the driver, called by libEGL.
1536 * Create a new _EGLDriver object and init its dispatch table.
1537 */
1538_EGLDriver *
1539_eglBuiltInDriverDRI2(const char *args)
1540{
1541   struct dri2_egl_driver *dri2_drv;
1542
1543   (void) args;
1544
1545   dri2_drv = malloc(sizeof *dri2_drv);
1546   if (!dri2_drv)
1547      return NULL;
1548
1549   memset(dri2_drv, 0, sizeof *dri2_drv);
1550
1551   if (!dri2_load(&dri2_drv->base)) {
1552      free(dri2_drv);
1553      return NULL;
1554   }
1555
1556   _eglInitDriverFallbacks(&dri2_drv->base);
1557   dri2_drv->base.API.Initialize = dri2_initialize;
1558   dri2_drv->base.API.Terminate = dri2_terminate;
1559   dri2_drv->base.API.CreateContext = dri2_create_context;
1560   dri2_drv->base.API.DestroyContext = dri2_destroy_context;
1561   dri2_drv->base.API.MakeCurrent = dri2_make_current;
1562   dri2_drv->base.API.GetProcAddress = dri2_get_proc_address;
1563   dri2_drv->base.API.WaitClient = dri2_wait_client;
1564   dri2_drv->base.API.WaitNative = dri2_wait_native;
1565   dri2_drv->base.API.BindTexImage = dri2_bind_tex_image;
1566   dri2_drv->base.API.ReleaseTexImage = dri2_release_tex_image;
1567   dri2_drv->base.API.CreateImageKHR = dri2_create_image_khr;
1568   dri2_drv->base.API.DestroyImageKHR = dri2_destroy_image_khr;
1569   dri2_drv->base.API.CreateDRMImageMESA = dri2_create_drm_image_mesa;
1570   dri2_drv->base.API.ExportDRMImageMESA = dri2_export_drm_image_mesa;
1571#ifdef HAVE_WAYLAND_PLATFORM
1572   dri2_drv->base.API.BindWaylandDisplayWL = dri2_bind_wayland_display_wl;
1573   dri2_drv->base.API.UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl;
1574   dri2_drv->base.API.QueryWaylandBufferWL = dri2_query_wayland_buffer_wl;
1575#endif
1576
1577   dri2_drv->base.Name = "DRI2";
1578   dri2_drv->base.Unload = dri2_unload;
1579
1580   return &dri2_drv->base;
1581}
1582